add reactive streams, add chunked file service

build.gradle

@@ -131,12 +131,6 @@ subprojects {
         archives javadocJar, sourcesJar
     }
 
-    if (project.hasProperty('signing.keyId')) {
-        signing {
-            sign configurations.archives
-        }
-    }
-
     ext {
         user = 'jprante'
         name = 'netty-http'

gradle.properties

@@ -1,6 +1,6 @@
 group = org.xbib
 name = netty-http
-version = 4.1.36.3
+version = 4.1.36.4
 
 # main packages
 netty.version = 4.1.36.Final
@@ -12,6 +12,7 @@ xbib-net-url.version = 1.3.2
 
 # server
 bouncycastle.version = 1.61
+reactivestreams.version = 1.0.2
 
 # server-rest
 xbib-guice.version = 4.0.4

netty-http-client/src/test/java/org/xbib/netty/http/client/test/NettyHttpExtension.java

@@ -19,6 +19,7 @@ public class NettyHttpExtension implements BeforeAllCallback {
         //System.setProperty("io.netty.recycler.maxCapacity", Integer.toString(0));
         //System.setProperty("io.netty.leakDetection.level", "paranoid");
 
+        Level level = Level.INFO;
         System.setProperty("java.util.logging.SimpleFormatter.format",
                 "%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL %4$-7s [%3$s] %5$s %6$s%n");
         LogManager.getLogManager().reset();
@@ -26,10 +27,10 @@ public class NettyHttpExtension implements BeforeAllCallback {
         Handler handler = new ConsoleHandler();
         handler.setFormatter(new SimpleFormatter());
         rootLogger.addHandler(handler);
-        rootLogger.setLevel(Level.FINE);
+        rootLogger.setLevel(level);
         for (Handler h : rootLogger.getHandlers()) {
             handler.setFormatter(new SimpleFormatter());
-            h.setLevel(Level.FINE);
+            h.setLevel(level);
         }
     }
 }

netty-http-server/build.gradle

@@ -6,5 +6,9 @@ dependencies {
     implementation "io.netty:netty-codec-http2:${project.property('netty.version')}"
     implementation "org.xbib:net-url:${project.property('xbib-net-url.version')}"
     implementation "org.bouncycastle:bcpkix-jdk15on:${project.property('bouncycastle.version')}"
+    implementation "org.reactivestreams:reactive-streams:${project.property('reactivestreams.version')}"
     testImplementation project(":netty-http-client")
+    testImplementation("org.reactivestreams:reactive-streams-tck:${project.property('reactivestreams.version')}") {
+        exclude module: 'testng'
+    }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/Server.java

@@ -156,10 +156,15 @@ public final class Server {
     /**
      * Start accepting incoming connections.
      * @return the channel future
+     * @throws IOException if channel future sync is interrupted
      */
-    public ChannelFuture accept() {
+    public ChannelFuture accept() throws IOException {
         logger.log(Level.INFO, () -> "trying to bind to " + serverConfig.getAddress());
-        this.channelFuture = bootstrap.bind(serverConfig.getAddress().getInetSocketAddress());
+        try {
+            this.channelFuture = bootstrap.bind(serverConfig.getAddress().getInetSocketAddress()).await().sync();
+        } catch (InterruptedException e) {
+            throw new IOException(e);
+        }
         logger.log(Level.INFO, () -> ServerName.getServerName() + " ready, listening on " + serverConfig.getAddress());
         return channelFuture;
     }
@@ -179,14 +184,14 @@ public final class Server {
         logger.log(level, NetworkUtils::displayNetworkInterfaces);
     }
 
-    public ServerRequest newRequest() {
+    /*public ServerRequest newRequest() {
         return new HttpServerRequest();
-    }
+    }*/
 
-    public ServerResponse newResponse(ServerRequest serverRequest) {
+    /*public ServerResponse newResponse(ServerRequest serverRequest) {
         return serverRequest.getNamedServer().getHttpAddress().getVersion().majorVersion() == 1 ?
                 new HttpServerResponse(serverRequest) : new Http2ServerResponse(serverRequest);
-    }
+    }*/
 
     public ServerTransport newTransport(HttpVersion httpVersion) {
         return httpVersion.majorVersion() == 1 ? new HttpServerTransport(this) : new Http2ServerTransport(this);
@@ -198,7 +203,9 @@ public final class Server {
         childEventLoopGroup.shutdownGracefully();
         parentEventLoopGroup.shutdownGracefully();
         try {
-            channelFuture.channel().closeFuture().sync();
+            if (channelFuture != null) {
+                channelFuture.channel().closeFuture().sync();
+            }
         } catch (InterruptedException e) {
             throw new IOException(e);
         }

netty-http-server/src/main/java/org/xbib/netty/http/server/ServerRequest.java

@@ -2,26 +2,30 @@ package org.xbib.netty.http.server;
 
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.http.FullHttpRequest;
+import org.xbib.net.URL;
 import org.xbib.netty.http.common.HttpParameters;
-import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 
-public interface ServerRequest {
+import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_TYPE;
 
-    NamedServer getNamedServer();
+public interface ServerRequest {
 
     ChannelHandlerContext getChannelHandlerContext();
 
     FullHttpRequest getRequest();
 
+    URL getURL();
+
+    EndpointInfo getEndpointInfo();
+
     void setContext(List<String> context);
 
     List<String> getContext();
 
-    void setPathParameters(Map<String, String> rawParameters);
+    void addPathParameter(String key, String value) throws IOException;
 
     Map<String, String> getPathParameters();
 
@@ -38,4 +42,60 @@ public interface ServerRequest {
     Integer streamId();
 
     Integer requestId();
+
+    class EndpointInfo implements Comparable<EndpointInfo> {
+
+        private final String path;
+
+        private final String method;
+
+        private final String contentType;
+
+        public EndpointInfo(ServerRequest serverRequest) {
+            this.path = extractPath(serverRequest.getRequest().uri());
+            this.method = serverRequest.getRequest().method().name();
+            this.contentType = serverRequest.getRequest().headers().get(CONTENT_TYPE);
+        }
+
+        public String getPath() {
+            return path;
+        }
+
+        public String getMethod() {
+            return method;
+        }
+
+        public String getContentType() {
+            return contentType;
+        }
+
+        @Override
+        public String toString() {
+            return "[EndpointInfo:path=" + path + ",method=" + method + ",contentType=" + contentType + "]";
+        }
+
+        @Override
+        public int hashCode() {
+            return toString().hashCode();
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            return o instanceof EndpointInfo && toString().equals(o.toString());
+        }
+
+        @Override
+        public int compareTo(EndpointInfo o) {
+            return toString().compareTo(o.toString());
+        }
+
+        private static String extractPath(String uri) {
+            String path = uri;
+            int pos = uri.lastIndexOf('#');
+            path = pos >= 0 ? path.substring(0, pos) : path;
+            pos = uri.lastIndexOf('?');
+            path = pos >= 0 ? path.substring(0, pos) : path;
+            return path;
+        }
+    }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/ServerResponse.java

@@ -1,9 +1,13 @@
 package org.xbib.netty.http.server;
 
 import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.util.AsciiString;
 
+import java.nio.CharBuffer;
+import java.nio.channels.ReadableByteChannel;
 import java.nio.charset.Charset;
 
 /**
@@ -13,20 +17,37 @@ public interface ServerResponse {
 
     void setHeader(AsciiString name, String value);
 
+    ChannelHandlerContext getChannelHandlerContext();
+
     HttpResponseStatus getLastStatus();
 
-    void write(String text);
-
-    void writeError(HttpResponseStatus status);
-
-    void writeError(HttpResponseStatus status, String text);
-
-    void write(HttpResponseStatus status);
-
-    void write(HttpResponseStatus status, String contentType, String text);
-
-    void write(HttpResponseStatus status, String contentType, String text, Charset charset);
-
     void write(HttpResponseStatus status, String contentType, ByteBuf byteBuf);
 
+    void write(HttpResponseStatus status, String contentType, ReadableByteChannel byteChannel);
+
+    static void write(ServerResponse serverResponse, HttpResponseStatus status) {
+        write(serverResponse, status, status.reasonPhrase());
+    }
+
+    static void write(ServerResponse serverResponse, String text) {
+        write(serverResponse, HttpResponseStatus.OK, text);
+    }
+
+    static void write(ServerResponse serverResponse, HttpResponseStatus status, String text) {
+        write(serverResponse, status, "text/plain; charset=utf-8", text);
+    }
+
+    static void write(ServerResponse serverResponse,
+                             HttpResponseStatus status, String contentType, String text) {
+        serverResponse.write(status, contentType,
+                ByteBufUtil.writeUtf8(serverResponse.getChannelHandlerContext().alloc(), text));
+    }
+
+    static void write(ServerResponse serverResponse,
+                             HttpResponseStatus status, String contentType, String text, Charset charset) {
+        serverResponse.write(status, contentType,
+                ByteBufUtil.encodeString(serverResponse.getChannelHandlerContext().alloc(),
+                        CharBuffer.allocate(text.length()).append(text), charset));
+    }
+
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/Endpoint.java

@@ -2,6 +2,7 @@ package org.xbib.netty.http.server.endpoint;
 
 import org.xbib.net.QueryParameters;
 import org.xbib.net.path.PathMatcher;
+import org.xbib.net.path.PathNormalizer;
 import org.xbib.netty.http.server.ServerRequest;
 import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.service.Service;
@@ -10,17 +11,13 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;
-import java.util.LinkedHashMap;
 import java.util.List;
-import java.util.Map;
-
-import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_TYPE;
 
 public class Endpoint {
 
     private static final PathMatcher pathMatcher = new PathMatcher();
 
-    public  static final List<String> DEFAULT_METHODS = Arrays.asList("GET", "HEAD");
+    public static final List<String> DEFAULT_METHODS = Arrays.asList("GET", "HEAD");
 
     private final String prefix;
 
@@ -34,9 +31,8 @@ public class Endpoint {
 
     private Endpoint(String prefix, String path,
              List<String> methods, List<String> contentTypes, List<Service> filters) {
-        this.prefix = prefix;
+        this.prefix = PathNormalizer.normalize(prefix);
-        this.path = path == null || path.isEmpty() ?
+        this.path = PathNormalizer.normalize(path);
-                prefix + "/**" : path.startsWith("/") ? prefix + path : prefix + "/" + path;
         this.methods = methods;
         this.contentTypes = contentTypes;
         this.filters = filters;
@@ -63,21 +59,19 @@ public class Endpoint {
         return path;
     }
 
-    public boolean matches(EndpointInfo info) {
+    public boolean matches(ServerRequest.EndpointInfo info) {
-        return pathMatcher.match(path, info.path) &&
+        return pathMatcher.match(prefix + path, info.getPath()) &&
-                (methods == null || methods.isEmpty() || (methods.contains(info.method))) &&
+                (methods == null || methods.isEmpty() || (methods.contains(info.getMethod()))) &&
-                (contentTypes == null || contentTypes.isEmpty() || info.contentType == null ||
+                (contentTypes == null || contentTypes.isEmpty() || info.getContentType() == null ||
-                contentTypes.stream().anyMatch(info.contentType::startsWith));
+                contentTypes.stream().anyMatch(info.getContentType()::startsWith));
     }
 
-    public void resolveUriTemplate(ServerRequest serverRequest) {
+    public void resolveUriTemplate(ServerRequest serverRequest) throws IOException {
-        if (pathMatcher.match(path, serverRequest.getEffectiveRequestPath())) {
+        if (pathMatcher.match(prefix + path, serverRequest.getRequest().uri())) {
-            QueryParameters queryParameters = pathMatcher.extractUriTemplateVariables(path, serverRequest.getEffectiveRequestPath());
+            QueryParameters queryParameters = pathMatcher.extractUriTemplateVariables(prefix + path, serverRequest.getRequest().uri());
-            Map<String, String> map = new LinkedHashMap<>();
             for (QueryParameters.Pair<String, String> pair : queryParameters) {
-                map.put(pair.getFirst(), pair.getSecond());
+                serverRequest.addPathParameter(pair.getFirst(), pair.getSecond());
             }
-            serverRequest.setPathParameters(map);
         }
     }
 
@@ -93,42 +87,7 @@ public class Endpoint {
 
     @Override
     public String toString() {
-        return path + "_" + methods + "_" + contentTypes + " --> " + filters;
+        return "Endpoint[prefix=" + prefix + ",path=" + path + ",methods=" + methods + ",contentTypes=" + contentTypes + " --> " + filters +"]";
-    }
-
-    public static class EndpointInfo implements Comparable<EndpointInfo> {
-
-        private final String path;
-
-        private final String method;
-
-        private final String contentType;
-
-        public EndpointInfo(ServerRequest serverRequest) {
-            this.path = serverRequest.getEffectiveRequestPath();
-            this.method = serverRequest.getRequest().method().name();
-            this.contentType = serverRequest.getRequest().headers().get(CONTENT_TYPE);
-        }
-
-        @Override
-        public String toString() {
-            return path + "_" + method + "_" + contentType;
-        }
-
-        @Override
-        public int hashCode() {
-            return toString().hashCode();
-        }
-
-        @Override
-        public boolean equals(Object o) {
-            return o instanceof EndpointInfo && toString().equals(o.toString());
-        }
-
-        @Override
-        public int compareTo(EndpointInfo o) {
-            return toString().compareTo(o.toString());
-        }
     }
 
     static class EndpointPathComparator implements Comparator<Endpoint> {

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/EndpointResolver.java

@@ -12,17 +12,21 @@ import java.util.Arrays;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 import java.util.stream.Collectors;
 
 public class EndpointResolver {
 
+    private static final Logger logger = Logger.getLogger(EndpointResolver.class.getName());
+
     private final Endpoint defaultEndpoint;
 
     private final List<Endpoint> endpoints;
 
     private final EndpointDispatcher endpointDispatcher;
 
-    private final LRUCache<Endpoint.EndpointInfo, List<Endpoint>> cache;
+    private final LRUCache<ServerRequest.EndpointInfo, List<Endpoint>> cache;
 
     private EndpointResolver(Endpoint defaultEndpoint,
                              List<Endpoint> endpoints,
@@ -35,11 +39,14 @@ public class EndpointResolver {
     }
 
     public void resolve(ServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
-        Endpoint.EndpointInfo endpointInfo = new Endpoint.EndpointInfo(serverRequest);
+        ServerRequest.EndpointInfo endpointInfo = serverRequest.getEndpointInfo();
         cache.putIfAbsent(endpointInfo, endpoints.stream()
                 .filter(endpoint -> endpoint.matches(endpointInfo))
-                .sorted(new Endpoint.EndpointPathComparator(serverRequest.getEffectiveRequestPath())).collect(Collectors.toList()));
+                .sorted(new Endpoint.EndpointPathComparator(endpointInfo.getPath())).collect(Collectors.toList()));
         List<Endpoint> matchingEndpoints = cache.get(endpointInfo);
+        if (logger.isLoggable(Level.FINEST)) {
+            logger.log(Level.FINEST, "endpoint info = " + endpointInfo + " matching endpoints = " + matchingEndpoints + " cache size=" + cache.size());
+        }
         if (matchingEndpoints.isEmpty()) {
             if (defaultEndpoint != null) {
                 defaultEndpoint.resolveUriTemplate(serverRequest);
@@ -48,7 +55,7 @@ public class EndpointResolver {
                     endpointDispatcher.dispatch(defaultEndpoint, serverRequest, serverResponse);
                 }
             } else {
-                serverResponse.write(HttpResponseStatus.NOT_IMPLEMENTED);
+                ServerResponse.write(serverResponse, HttpResponseStatus.NOT_IMPLEMENTED);
             }
         } else {
             for (Endpoint endpoint : matchingEndpoints) {
@@ -69,7 +76,7 @@ public class EndpointResolver {
         }
     }
 
-    public LRUCache<Endpoint.EndpointInfo, List<Endpoint>> getCache() {
+    public LRUCache<ServerRequest.EndpointInfo, List<Endpoint>> getCache() {
         return cache;
     }
 
@@ -79,7 +86,7 @@ public class EndpointResolver {
                 .addMethod("GET")
                 .addMethod("HEAD")
                 .addFilter((req, resp) -> {
-                    resp.writeError(HttpResponseStatus.NOT_FOUND,"No endpoint configured");
+                    ServerResponse.write(resp, HttpResponseStatus.NOT_FOUND,"No endpoint configured");
                 }).build();
     }
 
@@ -100,7 +107,7 @@ public class EndpointResolver {
         }
 
         protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
-            return size() >= cacheSize;
+            return size() > cacheSize;
         }
     }
 
@@ -148,8 +155,11 @@ public class EndpointResolver {
          */
         public Builder addEndpoint(Endpoint endpoint) {
             if (endpoint.getPrefix().equals("/") && prefix != null && !prefix.isEmpty()) {
-                endpoints.add(Endpoint.builder(endpoint).setPrefix(prefix).build());
+                Endpoint thisEndpoint = Endpoint.builder(endpoint).setPrefix(prefix).build();
+                logger.log(Level.FINEST, "adding endpoint = " + thisEndpoint);
+                endpoints.add(thisEndpoint);
             } else {
+                logger.log(Level.FINEST, "adding endpoint = " + endpoint);
                 endpoints.add(endpoint);
             }
             return this;

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/NamedServer.java

@@ -109,7 +109,7 @@ public class NamedServer {
                 endpointResolver.resolve(serverRequest, serverResponse);
             }
         } else {
-            serverResponse.writeError(HttpResponseStatus.NOT_IMPLEMENTED);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_IMPLEMENTED);
         }
     }
 

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/ChunkedFileService.java

@@ -0,0 +1,51 @@
+package org.xbib.netty.http.server.endpoint.service;
+
+import io.netty.handler.codec.http.HttpResponseStatus;
+import org.xbib.netty.http.server.ServerRequest;
+import org.xbib.netty.http.server.ServerResponse;
+import org.xbib.netty.http.server.util.MimeTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class ChunkedFileService implements Service {
+
+    private static final Logger logger = Logger.getLogger(ChunkedFileService.class.getName());
+
+    private final Path prefix;
+
+    public ChunkedFileService(Path prefix) {
+        this.prefix = prefix;
+        if (!Files.exists(prefix)) {
+            throw new IllegalArgumentException("prefix: " + prefix + " (does not exist)");
+        }
+        if (!Files.exists(prefix) || !Files.isDirectory(prefix)) {
+            throw new IllegalArgumentException("prefix: " + prefix + " (not a directory)");
+        }
+    }
+
+    @Override
+    public void handle(ServerRequest serverRequest, ServerResponse serverResponse) {
+        String requestPath = serverRequest.getEffectiveRequestPath().substring(1); // always starts with '/'
+        Path path = prefix.resolve(requestPath);
+        if (Files.isReadable(path)) {
+            try (InputStream inputStream = Files.newInputStream(path);
+                    ReadableByteChannel byteChannel = Channels.newChannel(inputStream)) {
+                String contentType = MimeTypeUtils.guessFromPath(requestPath, false);
+                serverResponse.write(HttpResponseStatus.OK, contentType, byteChannel);
+            } catch (IOException e) {
+                logger.log(Level.SEVERE, e.getMessage(), e);
+                ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
+            }
+        } else {
+            logger.log(Level.WARNING, "failed to access path " + path + " prefix = " + prefix + " requestPath=" + requestPath);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/ClassLoaderService.java

@@ -0,0 +1,73 @@
+package org.xbib.netty.http.server.endpoint.service;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import org.xbib.netty.http.server.ServerRequest;
+import org.xbib.netty.http.server.ServerResponse;
+import org.xbib.netty.http.server.util.MimeTypeUtils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.MappedByteBuffer;
+import java.nio.channels.Channels;
+import java.nio.channels.FileChannel;
+import java.nio.channels.ReadableByteChannel;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class ClassLoaderService implements Service {
+
+    private static final Logger logger = Logger.getLogger(ClassLoaderService.class.getName());
+
+    private Class<?> clazz;
+
+    private final String prefix;
+
+    public ClassLoaderService(Class<?> clazz, String prefix) {
+        this.clazz = clazz;
+        this.prefix = prefix;
+    }
+
+    @Override
+    public void handle(ServerRequest serverRequest, ServerResponse serverResponse) {
+        String requestPath = serverRequest.getEffectiveRequestPath().substring(1);
+        String contentType = MimeTypeUtils.guessFromPath(requestPath, false);
+        URL url = clazz.getResource(prefix + "/" + requestPath);
+        if (url != null) {
+            if ("file".equals(url.getProtocol())) {
+                doMappedResource(url, contentType, serverResponse);
+            } else {
+                doResource(url, contentType, serverResponse);
+            }
+        } else {
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
+        }
+    }
+
+    private void doMappedResource(URL url, String contentType, ServerResponse serverResponse) {
+        try {
+            FileChannel fileChannel = (FileChannel) Files.newByteChannel(Paths.get(url.toURI()));
+            MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
+            ByteBuf byteBuf = Unpooled.wrappedBuffer(mappedByteBuffer);
+            serverResponse.write(HttpResponseStatus.OK, contentType, byteBuf);
+        } catch (URISyntaxException | IOException e) {
+            logger.log(Level.SEVERE, e.getMessage(), e);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
+        }
+    }
+
+    private void doResource(URL url, String contentType, ServerResponse serverResponse) {
+        try (InputStream inputStream = url.openStream();
+             ReadableByteChannel byteChannel = Channels.newChannel(inputStream)) {
+            serverResponse.write(HttpResponseStatus.OK, contentType, byteChannel);
+        } catch (IOException e) {
+            logger.log(Level.SEVERE, e.getMessage(), e);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/ClasspathService.java

@@ -1,94 +0,0 @@
-package org.xbib.netty.http.server.endpoint.service;
-
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
-import io.netty.handler.codec.http.HttpResponseStatus;
-import org.xbib.netty.http.server.ServerRequest;
-import org.xbib.netty.http.server.ServerResponse;
-import org.xbib.netty.http.server.util.MimeTypeUtils;
-
-import java.io.IOException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
-import java.nio.MappedByteBuffer;
-import java.nio.channels.FileChannel;
-import java.nio.file.FileSystem;
-import java.nio.file.FileSystemNotFoundException;
-import java.nio.file.FileSystems;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-public class ClasspathService implements Service {
-
-    private static final Logger logger = Logger.getLogger(ClasspathService.class.getName());
-
-    private Class<?> clazz;
-
-    private final String prefix;
-
-    private final Map<String, String> env;
-
-    public ClasspathService(Class<?> clazz, String prefix) {
-        this.clazz = clazz;
-        this.prefix = prefix;
-        this.env = new HashMap<>();
-        env.put("create", "true");
-    }
-
-    @Override
-    public void handle(ServerRequest serverRequest, ServerResponse serverResponse) {
-        String requestPath = serverRequest.getEffectiveRequestPath();
-        String contentType = MimeTypeUtils.guessFromPath(requestPath, false);
-        URL url = clazz.getResource(prefix + "/" + requestPath);
-        if (url != null) {
-            try {
-                if ("jar".equals(url.getProtocol())) {
-                    doJarResource(url.toURI(), contentType, serverResponse);
-                } else {
-                    doFileResource(url.toURI(), contentType, serverResponse);
-                }
-            } catch (IOException | URISyntaxException e) {
-                logger.log(Level.SEVERE, e.getMessage(), e);
-                serverResponse.write(HttpResponseStatus.INTERNAL_SERVER_ERROR);
-            }
-        } else {
-            serverResponse.write(HttpResponseStatus.NOT_FOUND);
-        }
-    }
-
-    private void doFileResource(URI uri, String contentType, ServerResponse serverResponse) {
-        try {
-            FileChannel fileChannel = (FileChannel) Files.newByteChannel(Paths.get(uri));
-            MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
-            ByteBuf byteBuf = Unpooled.wrappedBuffer(mappedByteBuffer);
-            serverResponse.write(HttpResponseStatus.OK, contentType, byteBuf);
-        } catch (IOException e) {
-            logger.log(Level.SEVERE, e.getMessage(), e);
-            serverResponse.write(HttpResponseStatus.INTERNAL_SERVER_ERROR);
-        }
-    }
-
-    @SuppressWarnings("try")
-    private void doJarResource(URI uri, String contentType, ServerResponse serverResponse) throws IOException {
-        FileSystem zipfs = null;
-        try {
-            try {
-                zipfs = FileSystems.getFileSystem(uri);
-            } catch (FileSystemNotFoundException e) {
-                zipfs = FileSystems.newFileSystem(uri, env);
-            }
-            ByteBuf byteBuf = Unpooled.wrappedBuffer(Files.readAllBytes(Paths.get(uri)));
-            serverResponse.write(HttpResponseStatus.OK, contentType, byteBuf);
-        } catch (IOException e) {
-            logger.log(Level.SEVERE, e.getMessage(), e);
-            serverResponse.write(HttpResponseStatus.INTERNAL_SERVER_ERROR);
-        }
-    }
-
-
-}

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/MappedFileService.java

@@ -12,23 +12,30 @@ import java.nio.MappedByteBuffer;
 import java.nio.channels.FileChannel;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
-public class NioService implements Service {
+public class MappedFileService implements Service {
+
+    private static final Logger logger = Logger.getLogger(MappedFileService.class.getName());
 
     private final Path prefix;
 
-    public NioService(Path prefix) {
+    public MappedFileService(Path prefix) {
         this.prefix = prefix;
-        if (!Files.exists(prefix) || !Files.isDirectory(prefix)) {
+        if (!Files.exists(prefix)) {
-            throw new IllegalArgumentException("prefix: " + prefix + " (not a directory");
+            throw new IllegalArgumentException("prefix: " + prefix + " (does not exist)");
+        }
+        if (!Files.isDirectory(prefix)) {
+            throw new IllegalArgumentException("prefix: " + prefix + " (not a directory)");
         }
     }
 
     @Override
     public void handle(ServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
-        String requestPath = serverRequest.getEffectiveRequestPath();
+        String requestPath = serverRequest.getEffectiveRequestPath().substring(1); // always starts with '/'
         Path path = prefix.resolve(requestPath);
-        if (Files.exists(path) && Files.isReadable(path)) {
+        if (Files.isReadable(path)) {
             try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(path)) {
                 MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
                 ByteBuf byteBuf = Unpooled.wrappedBuffer(mappedByteBuffer);
@@ -36,7 +43,8 @@ public class NioService implements Service {
                 serverResponse.write(HttpResponseStatus.OK, contentType, byteBuf);
             }
         } else {
-            serverResponse.write(HttpResponseStatus.NOT_FOUND);
+            logger.log(Level.WARNING, "failed to access path " + path + " prefix = " + prefix + " requestPath=" + requestPath);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_FOUND);
         }
     }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/PathReaderService.java

@@ -1,46 +0,0 @@
-package org.xbib.netty.http.server.endpoint.service;
-
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufAllocator;
-import io.netty.handler.codec.http.HttpResponseStatus;
-import org.xbib.netty.http.server.ServerRequest;
-import org.xbib.netty.http.server.ServerResponse;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.channels.Channels;
-import java.nio.channels.SeekableByteChannel;
-import java.nio.file.Files;
-import java.nio.file.Path;
-
-public class PathReaderService implements Service {
-
-    private Path path;
-
-    private ByteBufAllocator allocator;
-
-    public PathReaderService(Path path, ByteBufAllocator allocator) {
-        this.path = path;
-        this.allocator = allocator;
-    }
-
-    @Override
-    public void handle(ServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
-        ByteBuf byteBuf = read(allocator, path.resolve(serverRequest.getEffectiveRequestPath()));
-        try {
-            serverResponse.write(HttpResponseStatus.OK, "application/octet-stream", byteBuf);
-        } finally {
-            byteBuf.release();
-        }
-    }
-
-    private static ByteBuf read(ByteBufAllocator allocator, Path path) throws IOException {
-        try (SeekableByteChannel sbc = Files.newByteChannel(path);
-             InputStream in = Channels.newInputStream(sbc)) {
-            int size = Math.toIntExact(sbc.size());
-            ByteBuf byteBuf = allocator.directBuffer(size, size);
-            byteBuf.writeBytes(in, size);
-            return byteBuf;
-        }
-    }
-}

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/ResourceService.java

@@ -0,0 +1,21 @@
+package org.xbib.netty.http.server.endpoint.service;
+
+import org.xbib.netty.http.server.ServerRequest;
+import org.xbib.netty.http.server.ServerResponse;
+
+import java.io.IOException;
+
+public abstract class ResourceService implements Service {
+
+    @Override
+    public void handle(ServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
+        String resourcePath = getResourcePath(serverRequest);
+        handleResource(resourcePath, serverRequest, serverResponse);
+    }
+
+    protected abstract void handleResource(String resourcePath, ServerRequest serverRequest, ServerResponse serverResponse) throws IOException;
+
+    protected String getResourcePath(ServerRequest serverRequest) {
+        return serverRequest.getEffectiveRequestPath().substring(1);
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/endpoint/service/URLService.java

@@ -0,0 +1,32 @@
+package org.xbib.netty.http.server.endpoint.service;
+
+import io.netty.handler.codec.http.HttpResponseStatus;
+import org.xbib.netty.http.server.ServerRequest;
+import org.xbib.netty.http.server.ServerResponse;
+
+import java.io.IOException;
+import java.net.URL;
+
+public abstract class URLService extends ResourceService {
+
+    @Override
+    protected void handleResource(String resourcePath, ServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
+        URL url = getResourceURL(resourcePath);
+        if (url != null) {
+            streamResource(url, serverRequest, serverResponse);
+        }
+    }
+
+    protected abstract URL getResourceURL(String resourcePath);
+
+    protected void streamResource(URL resourceUrl, ServerRequest serverRequest,
+                                  ServerResponse serverResponse) throws IOException {
+        /*long lastModified = resourceUrl.openConnection().getLastModified();
+        serverResponse.addEtag(serverRequest, lastModified);
+        if (serverResponse.getLastStatus() == HttpResponseStatus.NOT_MODIFIED) {
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_MODIFIED);
+        } else {
+            sendResource(resourceUrl, serverRequest, serverResponse);
+        }*/
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/handler/http/HttpChannelInitializer.java

@@ -16,6 +16,7 @@ import io.netty.handler.codec.http.HttpVersion;
 import io.netty.handler.logging.LogLevel;
 import io.netty.handler.ssl.SniHandler;
 import io.netty.handler.ssl.SslContext;
+import io.netty.handler.stream.ChunkedWriteHandler;
 import io.netty.util.DomainNameMapping;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
@@ -76,16 +77,18 @@ public class HttpChannelInitializer extends ChannelInitializer<SocketChannel> {
 
     private void configureCleartext(SocketChannel channel) {
         ChannelPipeline pipeline = channel.pipeline();
-        pipeline.addLast(new HttpServerCodec(serverConfig.getMaxInitialLineLength(),
+        pipeline.addLast("http-server-codec",
-                serverConfig.getMaxHeadersSize(), serverConfig.getMaxChunkSize()));
+                new HttpServerCodec(serverConfig.getMaxInitialLineLength(),
+                        serverConfig.getMaxHeadersSize(), serverConfig.getMaxChunkSize()));
         if (serverConfig.isEnableGzip()) {
-            pipeline.addLast(new HttpContentDecompressor());
+            pipeline.addLast("http-server-decompressor", new HttpContentDecompressor());
         }
         HttpObjectAggregator httpObjectAggregator = new HttpObjectAggregator(serverConfig.getMaxContentLength(),
                 false);
         httpObjectAggregator.setMaxCumulationBufferComponents(serverConfig.getMaxCompositeBufferComponents());
-        pipeline.addLast(httpObjectAggregator);
+        pipeline.addLast("http-server-aggregator", httpObjectAggregator);
-        pipeline.addLast(new HttpPipeliningHandler(1024));
+        pipeline.addLast("http-server-pipelining", new HttpPipeliningHandler(1024));
+        pipeline.addLast("http-server-chunked-write", new ChunkedWriteHandler());
         pipeline.addLast(httpHandler);
     }
 

netty-http-server/src/main/java/org/xbib/netty/http/server/handler/http2/Http2ChannelInitializer.java

@@ -21,6 +21,7 @@ import io.netty.handler.codec.http2.Http2Settings;
 import io.netty.handler.logging.LogLevel;
 import io.netty.handler.ssl.SniHandler;
 import io.netty.handler.ssl.SslContext;
+import io.netty.handler.stream.ChunkedWriteHandler;
 import io.netty.util.AsciiString;
 import io.netty.util.DomainNameMapping;
 import org.xbib.netty.http.common.HttpAddress;
@@ -83,12 +84,14 @@ public class Http2ChannelInitializer extends ChannelInitializer<Channel> {
                 protected void initChannel(Channel channel) {
                     ServerTransport serverTransport = server.newTransport(httpAddress.getVersion());
                     channel.attr(ServerTransport.TRANSPORT_ATTRIBUTE_KEY).set(serverTransport);
-                    ChannelPipeline p = channel.pipeline();
+                    ChannelPipeline pipeline = channel.pipeline();
-                    p.addLast("multiplex-server-frame-converter",
+                    pipeline.addLast("multiplex-server-frame-converter",
                             new Http2StreamFrameToHttpObjectCodec(true));
-                    p.addLast("multiplex-server-chunk-aggregator",
+                    pipeline.addLast("multiplex-server-chunk-aggregator",
                             new HttpObjectAggregator(serverConfig.getMaxContentLength()));
-                    p.addLast("multiplex-server-request-handler",
+                    pipeline.addLast("multiplex-server-chunked-write",
+                            new ChunkedWriteHandler());
+                    pipeline.addLast("multiplex-server-request-handler",
                             new ServerRequestHandler());
                 }
             })

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/CancelledSubscriber.java

@@ -0,0 +1,34 @@
+package org.xbib.netty.http.server.reactive;
+
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+
+/**
+ * A cancelled subscriber.
+ */
+public final class CancelledSubscriber<T> implements Subscriber<T> {
+
+    @Override
+    public void onSubscribe(Subscription subscription) {
+        if (subscription == null) {
+            throw new NullPointerException("Null subscription");
+        } else {
+            subscription.cancel();
+        }
+    }
+
+    @Override
+    public void onNext(T t) {
+    }
+
+    @Override
+    public void onError(Throwable error) {
+        if (error == null) {
+            throw new NullPointerException("Null error published");
+        }
+    }
+
+    @Override
+    public void onComplete() {
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/DelegateHttpMessage.java

@@ -0,0 +1,58 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.DecoderResult;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpMessage;
+import io.netty.handler.codec.http.HttpVersion;
+
+class DelegateHttpMessage implements HttpMessage {
+    protected final HttpMessage message;
+
+    public DelegateHttpMessage(HttpMessage message) {
+        this.message = message;
+    }
+
+    @Override
+    @Deprecated
+    public HttpVersion getProtocolVersion() {
+        return message.protocolVersion();
+    }
+
+    @Override
+    public HttpVersion protocolVersion() {
+        return message.protocolVersion();
+    }
+
+    @Override
+    public HttpMessage setProtocolVersion(HttpVersion version) {
+        message.setProtocolVersion(version);
+        return this;
+    }
+
+    @Override
+    public HttpHeaders headers() {
+        return message.headers();
+    }
+
+    @Override
+    @Deprecated
+    public DecoderResult getDecoderResult() {
+        return message.decoderResult();
+    }
+
+    @Override
+    public DecoderResult decoderResult() {
+        return message.decoderResult();
+    }
+
+    @Override
+    public void setDecoderResult(DecoderResult result) {
+        message.setDecoderResult(result);
+    }
+
+    @Override
+    public String toString() {
+        return this.getClass().getName() + "(" + message.toString() + ")";
+    }
+
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/DelegateHttpRequest.java

@@ -0,0 +1,55 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpMethod;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpVersion;
+
+class DelegateHttpRequest extends DelegateHttpMessage implements HttpRequest {
+
+    protected final HttpRequest request;
+
+    public DelegateHttpRequest(HttpRequest request) {
+        super(request);
+        this.request = request;
+    }
+
+    @Override
+    public HttpRequest setMethod(HttpMethod method) {
+        request.setMethod(method);
+        return this;
+    }
+
+    @Override
+    public HttpRequest setUri(String uri) {
+        request.setUri(uri);
+        return this;
+    }
+
+    @Override
+    @Deprecated
+    public HttpMethod getMethod() {
+        return request.method();
+    }
+
+    @Override
+    public HttpMethod method() {
+        return request.method();
+    }
+
+    @Override
+    @Deprecated
+    public String getUri() {
+        return request.uri();
+    }
+
+    @Override
+    public String uri() {
+        return request.uri();
+    }
+
+    @Override
+    public HttpRequest setProtocolVersion(HttpVersion version) {
+        super.setProtocolVersion(version);
+        return this;
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/DelegateHttpResponse.java

@@ -0,0 +1,38 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpVersion;
+
+class DelegateHttpResponse extends DelegateHttpMessage implements HttpResponse {
+
+    protected final HttpResponse response;
+
+    public DelegateHttpResponse(HttpResponse response) {
+        super(response);
+        this.response = response;
+    }
+
+    @Override
+    public HttpResponse setStatus(HttpResponseStatus status) {
+        response.setStatus(status);
+        return this;
+    }
+
+    @Override
+    @Deprecated
+    public HttpResponseStatus getStatus() {
+        return response.status();
+    }
+
+    @Override
+    public HttpResponseStatus status() {
+        return response.status();
+    }
+
+    @Override
+    public HttpResponse setProtocolVersion(HttpVersion version) {
+        super.setProtocolVersion(version);
+        return this;
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/DelegateStreamedHttpRequest.java

@@ -0,0 +1,21 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpRequest;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+
+final class DelegateStreamedHttpRequest extends DelegateHttpRequest implements StreamedHttpRequest {
+
+    private final Publisher<HttpContent> stream;
+
+    public DelegateStreamedHttpRequest(HttpRequest request, Publisher<HttpContent> stream) {
+        super(request);
+        this.stream = stream;
+    }
+
+    @Override
+    public void subscribe(Subscriber<? super HttpContent> subscriber) {
+        stream.subscribe(subscriber);
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/DelegateStreamedHttpResponse.java

@@ -0,0 +1,21 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpResponse;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+
+final class DelegateStreamedHttpResponse extends DelegateHttpResponse implements StreamedHttpResponse {
+
+    private final Publisher<HttpContent> stream;
+
+    public DelegateStreamedHttpResponse(HttpResponse response, Publisher<HttpContent> stream) {
+        super(response);
+        this.stream = stream;
+    }
+
+    @Override
+    public void subscribe(Subscriber<? super HttpContent> subscriber) {
+        stream.subscribe(subscriber);
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/EmptyHttpRequest.java

@@ -0,0 +1,135 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.http.DefaultHttpHeaders;
+import io.netty.handler.codec.http.DefaultHttpRequest;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpMethod;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.util.ReferenceCountUtil;
+import io.netty.util.ReferenceCounted;
+
+class EmptyHttpRequest extends DelegateHttpRequest implements FullHttpRequest {
+
+    public EmptyHttpRequest(HttpRequest request) {
+        super(request);
+    }
+
+    @Override
+    public FullHttpRequest setUri(String uri) {
+        super.setUri(uri);
+        return this;
+    }
+
+    @Override
+    public FullHttpRequest setMethod(HttpMethod method) {
+        super.setMethod(method);
+        return this;
+    }
+
+    @Override
+    public FullHttpRequest setProtocolVersion(HttpVersion version) {
+        super.setProtocolVersion(version);
+        return this;
+    }
+
+    @Override
+    public FullHttpRequest copy() {
+        if (request instanceof FullHttpRequest) {
+            return new EmptyHttpRequest(((FullHttpRequest) request).copy());
+        } else {
+            DefaultHttpRequest copy = new DefaultHttpRequest(protocolVersion(), method(), uri());
+            copy.headers().set(headers());
+            return new EmptyHttpRequest(copy);
+        }
+    }
+
+    @Override
+    public FullHttpRequest retain(int increment) {
+        ReferenceCountUtil.retain(message, increment);
+        return this;
+    }
+
+    @Override
+    public FullHttpRequest retain() {
+        ReferenceCountUtil.retain(message);
+        return this;
+    }
+
+    @Override
+    public FullHttpRequest touch() {
+        if (request instanceof FullHttpRequest) {
+            return ((FullHttpRequest) request).touch();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpRequest touch(Object o) {
+        if (request instanceof FullHttpRequest) {
+            return ((FullHttpRequest) request).touch(o);
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public HttpHeaders trailingHeaders() {
+        return new DefaultHttpHeaders();
+    }
+
+    @Override
+    public FullHttpRequest duplicate() {
+        if (request instanceof FullHttpRequest) {
+            return ((FullHttpRequest) request).duplicate();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpRequest retainedDuplicate() {
+        if (request instanceof FullHttpRequest) {
+            return ((FullHttpRequest) request).retainedDuplicate();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpRequest replace(ByteBuf byteBuf) {
+        if (message instanceof FullHttpRequest) {
+            return ((FullHttpRequest) request).replace(byteBuf);
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public ByteBuf content() {
+        return Unpooled.EMPTY_BUFFER;
+    }
+
+    @Override
+    public int refCnt() {
+        if (message instanceof ReferenceCounted) {
+            return ((ReferenceCounted) message).refCnt();
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public boolean release() {
+        return ReferenceCountUtil.release(message);
+    }
+
+    @Override
+    public boolean release(int decrement) {
+        return ReferenceCountUtil.release(message, decrement);
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/EmptyHttpResponse.java

@@ -0,0 +1,129 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.handler.codec.http.DefaultHttpHeaders;
+import io.netty.handler.codec.http.DefaultHttpResponse;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.util.ReferenceCountUtil;
+import io.netty.util.ReferenceCounted;
+
+class EmptyHttpResponse extends DelegateHttpResponse implements FullHttpResponse {
+
+    public EmptyHttpResponse(HttpResponse response) {
+        super(response);
+    }
+
+    @Override
+    public FullHttpResponse setStatus(HttpResponseStatus status) {
+        super.setStatus(status);
+        return this;
+    }
+
+    @Override
+    public FullHttpResponse setProtocolVersion(HttpVersion version) {
+        super.setProtocolVersion(version);
+        return this;
+    }
+
+    @Override
+    public FullHttpResponse copy() {
+        if (response instanceof FullHttpResponse) {
+            return new EmptyHttpResponse(((FullHttpResponse) response).copy());
+        } else {
+            DefaultHttpResponse copy = new DefaultHttpResponse(protocolVersion(), status());
+            copy.headers().set(headers());
+            return new EmptyHttpResponse(copy);
+        }
+    }
+
+    @Override
+    public FullHttpResponse retain(int increment) {
+        ReferenceCountUtil.retain(message, increment);
+        return this;
+    }
+
+    @Override
+    public FullHttpResponse retain() {
+        ReferenceCountUtil.retain(message);
+        return this;
+    }
+
+    @Override
+    public FullHttpResponse touch() {
+        if (response instanceof FullHttpResponse) {
+            return ((FullHttpResponse) response).touch();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpResponse touch(Object o) {
+        if (response instanceof FullHttpResponse) {
+            return ((FullHttpResponse) response).touch(o);
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public HttpHeaders trailingHeaders() {
+        return new DefaultHttpHeaders();
+    }
+
+    @Override
+    public FullHttpResponse duplicate() {
+        if (response instanceof FullHttpResponse) {
+            return ((FullHttpResponse) response).duplicate();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpResponse retainedDuplicate() {
+        if (response instanceof FullHttpResponse) {
+            return ((FullHttpResponse) response).retainedDuplicate();
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public FullHttpResponse replace(ByteBuf byteBuf) {
+        if (response instanceof FullHttpResponse) {
+            return ((FullHttpResponse) response).replace(byteBuf);
+        } else {
+            return this;
+        }
+    }
+
+    @Override
+    public ByteBuf content() {
+        return Unpooled.EMPTY_BUFFER;
+    }
+
+    @Override
+    public int refCnt() {
+        if (message instanceof ReferenceCounted) {
+            return ((ReferenceCounted) message).refCnt();
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public boolean release() {
+        return ReferenceCountUtil.release(message);
+    }
+
+    @Override
+    public boolean release(int decrement) {
+        return ReferenceCountUtil.release(message, decrement);
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/HandlerPublisher.java

@@ -0,0 +1,477 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandler;
+import io.netty.channel.ChannelPipeline;
+import io.netty.util.ReferenceCountUtil;
+import io.netty.util.concurrent.EventExecutor;
+import io.netty.util.internal.TypeParameterMatcher;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.BUFFERING;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.DEMANDING;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.DONE;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.DRAINING;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.IDLE;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.NO_CONTEXT;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.NO_SUBSCRIBER;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.NO_SUBSCRIBER_ERROR;
+import static org.xbib.netty.http.server.reactive.HandlerPublisher.State.NO_SUBSCRIBER_OR_CONTEXT;
+
+/**
+ * Publisher for a Netty Handler.
+ *
+ * This publisher supports only one subscriber.
+ *
+ * All interactions with the subscriber are done from the handlers executor, hence, they provide the same happens before
+ * semantics that Netty provides.
+ *
+ * The handler publishes all messages that match the type as specified by the passed in class. Any non matching messages
+ * are forwarded to the next handler.
+ *
+ * The publisher will signal complete if it receives a channel inactive event.
+ *
+ * The publisher will release any messages that it drops (for example, messages that are buffered when the subscriber
+ * cancels), but other than that, it does not release any messages.  It is up to the subscriber to release messages.
+ *
+ * If the subscriber cancels, the publisher will send a close event up the channel pipeline.
+ *
+ * All errors will short circuit the buffer, and cause publisher to immediately call the subscribers onError method,
+ * dropping the buffer.
+ *
+ * The publisher can be subscribed to or placed in a handler chain in any order.
+ */
+public class HandlerPublisher<T> extends ChannelDuplexHandler implements Publisher<T> {
+
+    private final EventExecutor executor;
+    private final TypeParameterMatcher matcher;
+
+    /**
+     * Create a handler publisher.
+     *
+     * The supplied executor must be the same event loop as the event loop that this handler is eventually registered
+     * with, if not, an exception will be thrown when the handler is registered.
+     *
+     * @param executor The executor to execute asynchronous events from the subscriber on.
+     * @param subscriberMessageType The type of message this publisher accepts.
+     */
+    public HandlerPublisher(EventExecutor executor, Class<? extends T> subscriberMessageType) {
+        this.executor = executor;
+        this.matcher = TypeParameterMatcher.get(subscriberMessageType);
+    }
+
+    /**
+     * Returns {@code true} if the given message should be handled. If {@code false} it will be passed to the next
+     * {@link ChannelInboundHandler} in the {@link ChannelPipeline}.
+     *
+     * @param msg The message to check.
+     * @return True if the message should be accepted.
+     */
+    protected boolean acceptInboundMessage(Object msg) {
+        return matcher.match(msg);
+    }
+
+    /**
+     * Override to handle when a subscriber cancels the subscription.
+     *
+     * By default, this method will simply close the channel.
+     */
+    protected void cancelled() {
+        ctx.close();
+    }
+
+    /**
+     * Override to intercept when demand is requested.
+     *
+     * By default, a channel read is invoked.
+     */
+    protected void requestDemand() {
+        ctx.read();
+    }
+
+    enum State {
+        /**
+         * Initial state. There's no subscriber, and no context.
+         */
+        NO_SUBSCRIBER_OR_CONTEXT,
+
+        /**
+         * A subscriber has been provided, but no context has been provided.
+         */
+        NO_CONTEXT,
+
+        /**
+         * A context has been provided, but no subscriber has been provided.
+         */
+        NO_SUBSCRIBER,
+
+        /**
+         * An error has been received, but there's no subscriber to receive it.
+         */
+        NO_SUBSCRIBER_ERROR,
+
+        /**
+         * There is no demand, and we have nothing buffered.
+         */
+        IDLE,
+
+        /**
+         * There is no demand, and we're buffering elements.
+         */
+        BUFFERING,
+
+        /**
+         * We have nothing buffered, but there is demand.
+         */
+        DEMANDING,
+
+        /**
+         * The stream is complete, however there are still elements buffered for which no demand has come from the subscriber.
+         */
+        DRAINING,
+
+        /**
+         * We're done, in the terminal state.
+         */
+        DONE
+    }
+
+    private final Queue<Object> buffer = new LinkedList<>();
+
+    /**
+     * Whether a subscriber has been provided. This is used to detect whether two subscribers are subscribing
+     * simultaneously.
+     */
+    private final AtomicBoolean hasSubscriber = new AtomicBoolean();
+
+    private State state = NO_SUBSCRIBER_OR_CONTEXT;
+
+    private volatile Subscriber<? super T> subscriber;
+    private ChannelHandlerContext ctx;
+    private long outstandingDemand = 0;
+    private Throwable noSubscriberError;
+
+    @Override
+    public void subscribe(final Subscriber<? super T> subscriber) {
+        if (subscriber == null) {
+            throw new NullPointerException("Null subscriber");
+        }
+
+        if (!hasSubscriber.compareAndSet(false, true)) {
+            // Must call onSubscribe first.
+            subscriber.onSubscribe(new Subscription() {
+                @Override
+                public void request(long n) {
+                }
+                @Override
+                public void cancel() {
+                }
+            });
+            subscriber.onError(new IllegalStateException("This publisher only supports one subscriber"));
+        } else {
+            executor.execute(new Runnable() {
+                @Override
+                public void run() {
+                    provideSubscriber(subscriber);
+                }
+            });
+        }
+    }
+
+    private void provideSubscriber(Subscriber<? super T> subscriber) {
+        this.subscriber = subscriber;
+        switch (state) {
+            case NO_SUBSCRIBER_OR_CONTEXT:
+                state = NO_CONTEXT;
+                break;
+            case NO_SUBSCRIBER:
+                if (buffer.isEmpty()) {
+                    state = IDLE;
+                } else {
+                    state = BUFFERING;
+                }
+                subscriber.onSubscribe(new ChannelSubscription());
+                break;
+            case DRAINING:
+                subscriber.onSubscribe(new ChannelSubscription());
+                break;
+            case NO_SUBSCRIBER_ERROR:
+                cleanup();
+                state = DONE;
+                subscriber.onSubscribe(new ChannelSubscription());
+                subscriber.onError(noSubscriberError);
+                break;
+        }
+    }
+
+    @Override
+    public void handlerAdded(ChannelHandlerContext ctx) {
+        // If the channel is not yet registered, then it's not safe to invoke any methods on it, eg read() or close()
+        // So don't provide the context until it is registered.
+        if (ctx.channel().isRegistered()) {
+            provideChannelContext(ctx);
+        }
+    }
+
+    @Override
+    public void channelRegistered(ChannelHandlerContext ctx) {
+        provideChannelContext(ctx);
+        ctx.fireChannelRegistered();
+    }
+
+    private void provideChannelContext(ChannelHandlerContext ctx) {
+        switch(state) {
+            case NO_SUBSCRIBER_OR_CONTEXT:
+                verifyRegisteredWithRightExecutor(ctx);
+                this.ctx = ctx;
+                // It's set, we don't have a subscriber
+                state = NO_SUBSCRIBER;
+                break;
+            case NO_CONTEXT:
+                verifyRegisteredWithRightExecutor(ctx);
+                this.ctx = ctx;
+                state = IDLE;
+                subscriber.onSubscribe(new ChannelSubscription());
+                break;
+            default:
+                // Ignore, this could be invoked twice by both handlerAdded and channelRegistered.
+        }
+    }
+
+    private void verifyRegisteredWithRightExecutor(ChannelHandlerContext ctx) {
+        if (!executor.inEventLoop()) {
+            throw new IllegalArgumentException("Channel handler MUST be registered with the same EventExecutor that it is created with.");
+        }
+    }
+
+    @Override
+    public void channelActive(ChannelHandlerContext ctx) {
+        // If we subscribed before the channel was active, then our read would have been ignored.
+        if (state == DEMANDING) {
+            requestDemand();
+        }
+        ctx.fireChannelActive();
+    }
+
+    private void receivedDemand(long demand) {
+        switch (state) {
+            case BUFFERING:
+            case DRAINING:
+                if (addDemand(demand)) {
+                    flushBuffer();
+                }
+                break;
+
+            case DEMANDING:
+                addDemand(demand);
+                break;
+
+            case IDLE:
+                if (addDemand(demand)) {
+                    // Important to change state to demanding before doing a read, in case we get a synchronous
+                    // read back.
+                    state = DEMANDING;
+                    requestDemand();
+                }
+                break;
+            default:
+
+        }
+    }
+
+    private boolean addDemand(long demand) {
+
+        if (demand <= 0) {
+            illegalDemand();
+            return false;
+        } else {
+            if (outstandingDemand < Long.MAX_VALUE) {
+                outstandingDemand += demand;
+                if (outstandingDemand < 0) {
+                    outstandingDemand = Long.MAX_VALUE;
+                }
+            }
+            return true;
+        }
+    }
+
+    private void illegalDemand() {
+        cleanup();
+        subscriber.onError(new IllegalArgumentException("Request for 0 or negative elements in violation of Section 3.9 of the Reactive Streams specification"));
+        ctx.close();
+        state = DONE;
+    }
+
+    private void flushBuffer() {
+        while (!buffer.isEmpty() && outstandingDemand > 0) {
+            publishMessage(buffer.remove());
+        }
+        if (buffer.isEmpty()) {
+            if (outstandingDemand > 0) {
+                if (state == BUFFERING) {
+                    state = DEMANDING;
+                } // otherwise we're draining
+                requestDemand();
+            } else if (state == BUFFERING) {
+                state = IDLE;
+            }
+        }
+    }
+
+    private void receivedCancel() {
+        switch (state) {
+            case BUFFERING:
+            case DEMANDING:
+            case IDLE:
+                cancelled();
+            case DRAINING:
+                state = DONE;
+                break;
+        }
+        cleanup();
+        subscriber = null;
+    }
+
+    @Override
+    public void channelRead(ChannelHandlerContext ctx, Object message) throws Exception {
+        if (acceptInboundMessage(message)) {
+            switch (state) {
+                case IDLE:
+                    buffer.add(message);
+                    state = BUFFERING;
+                    break;
+                case NO_SUBSCRIBER:
+                case BUFFERING:
+                    buffer.add(message);
+                    break;
+                case DEMANDING:
+                    publishMessage(message);
+                    break;
+                case DRAINING:
+                case DONE:
+                    ReferenceCountUtil.release(message);
+                    break;
+                case NO_CONTEXT:
+                case NO_SUBSCRIBER_OR_CONTEXT:
+                    throw new IllegalStateException("Message received before added to the channel context");
+            }
+        } else {
+            ctx.fireChannelRead(message);
+        }
+    }
+
+    private void publishMessage(Object message) {
+        if (COMPLETE.equals(message)) {
+            subscriber.onComplete();
+            state = DONE;
+        } else {
+            @SuppressWarnings("unchecked")
+            T next = (T) message;
+            subscriber.onNext(next);
+            if (outstandingDemand < Long.MAX_VALUE) {
+                outstandingDemand--;
+                if (outstandingDemand == 0 && state != DRAINING) {
+                    if (buffer.isEmpty()) {
+                        state = IDLE;
+                    } else {
+                        state = BUFFERING;
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public void channelReadComplete(ChannelHandlerContext ctx) {
+        if (state == DEMANDING) {
+            requestDemand();
+        }
+    }
+
+    @Override
+    public void channelInactive(ChannelHandlerContext ctx) {
+        complete();
+    }
+
+    @Override
+    public void handlerRemoved(ChannelHandlerContext ctx) {
+        complete();
+    }
+
+    private void complete() {
+
+        switch (state) {
+            case NO_SUBSCRIBER:
+            case BUFFERING:
+                buffer.add(COMPLETE);
+                state = DRAINING;
+                break;
+            case DEMANDING:
+            case IDLE:
+                subscriber.onComplete();
+                state = DONE;
+                break;
+            case NO_SUBSCRIBER_ERROR:
+                // Ignore, we're already going to complete the stream with an error
+                // when the subscriber subscribes.
+                break;
+        }
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        switch (state) {
+            case NO_SUBSCRIBER:
+                noSubscriberError = cause;
+                state = NO_SUBSCRIBER_ERROR;
+                cleanup();
+                break;
+            case BUFFERING:
+            case DEMANDING:
+            case IDLE:
+            case DRAINING:
+                state = DONE;
+                cleanup();
+                subscriber.onError(cause);
+                break;
+        }
+    }
+
+    /**
+     * Release all elements from the buffer.
+     */
+    private void cleanup() {
+        while (!buffer.isEmpty()) {
+            ReferenceCountUtil.release(buffer.remove());
+        }
+    }
+
+    private class ChannelSubscription implements Subscription {
+        @Override
+        public void request(final long demand) {
+            executor.execute(() -> receivedDemand(demand));
+        }
+
+        @Override
+        public void cancel() {
+            executor.execute(() -> receivedCancel());
+        }
+    }
+
+    /**
+     * Used for buffering a completion signal.
+     */
+    private static final Object COMPLETE = new Object() {
+        @Override
+        public String toString() {
+            return "COMPLETE";
+        }
+    };
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/HandlerSubscriber.java

@@ -0,0 +1,263 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.util.concurrent.EventExecutor;
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.CANCELLED;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.COMPLETE;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.INACTIVE;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.NO_CONTEXT;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.NO_SUBSCRIPTION;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.NO_SUBSCRIPTION_OR_CONTEXT;
+import static org.xbib.netty.http.server.reactive.HandlerSubscriber.State.RUNNING;
+
+
+/**
+ * Subscriber that publishes received messages to the handler pipeline.
+ */
+public class HandlerSubscriber<T> extends ChannelDuplexHandler implements Subscriber<T> {
+
+    private static final long DEFAULT_LOW_WATERMARK = 4;
+
+    private static final long DEFAULT_HIGH_WATERMARK = 16;
+
+    /**
+     * Create a new handler subscriber.
+     *
+     * The supplied executor must be the same event loop as the event loop that this handler is eventually registered
+     * with, if not, an exception will be thrown when the handler is registered.
+     *
+     * @param executor The executor to execute asynchronous events from the publisher on.
+     * @param demandLowWatermark  The low watermark for demand. When demand drops below this, more will be requested.
+     * @param demandHighWatermark The high watermark for demand. This is the maximum that will be requested.
+     */
+    public HandlerSubscriber(EventExecutor executor, long demandLowWatermark, long demandHighWatermark) {
+        this.executor = executor;
+        this.demandLowWatermark = demandLowWatermark;
+        this.demandHighWatermark = demandHighWatermark;
+    }
+
+    /**
+     * Create a new handler subscriber with the default low and high watermarks.
+     *
+     * The supplied executor must be the same event loop as the event loop that this handler is eventually registered
+     * with, if not, an exception will be thrown when the handler is registered.
+     *
+     * @param executor The executor to execute asynchronous events from the publisher on.
+     * @see #HandlerSubscriber(EventExecutor, long, long)
+     */
+    public HandlerSubscriber(EventExecutor executor) {
+        this(executor, DEFAULT_LOW_WATERMARK, DEFAULT_HIGH_WATERMARK);
+    }
+
+    /**
+     * Override for custom error handling. By default, it closes the channel.
+     *
+     * @param error The error to handle.
+     */
+    protected void error(Throwable error) {
+        doClose();
+    }
+
+    /**
+     * Override for custom completion handling. By default, it closes the channel.
+     */
+    protected void complete() {
+        doClose();
+    }
+
+    private final EventExecutor executor;
+    private final long demandLowWatermark;
+    private final long demandHighWatermark;
+
+    enum State {
+        NO_SUBSCRIPTION_OR_CONTEXT,
+        NO_SUBSCRIPTION,
+        NO_CONTEXT,
+        INACTIVE,
+        RUNNING,
+        CANCELLED,
+        COMPLETE
+    }
+
+    private final AtomicBoolean hasSubscription = new AtomicBoolean();
+
+    private volatile Subscription subscription;
+    private volatile ChannelHandlerContext ctx;
+
+    private State state = NO_SUBSCRIPTION_OR_CONTEXT;
+    private long outstandingDemand = 0;
+    private ChannelFuture lastWriteFuture;
+
+    @Override
+    public void handlerAdded(ChannelHandlerContext ctx) {
+        verifyRegisteredWithRightExecutor(ctx);
+
+        switch (state) {
+            case NO_SUBSCRIPTION_OR_CONTEXT:
+                this.ctx = ctx;
+                // We were in no subscription or context, now we just don't have a subscription.
+                state = NO_SUBSCRIPTION;
+                break;
+            case NO_CONTEXT:
+                this.ctx = ctx;
+                // We were in no context, we're now fully initialised
+                maybeStart();
+                break;
+            case COMPLETE:
+                // We are complete, close
+                state = COMPLETE;
+                ctx.close();
+                break;
+            default:
+                throw new IllegalStateException("This handler must only be added to a pipeline once " + state);
+        }
+    }
+
+    @Override
+    public void channelRegistered(ChannelHandlerContext ctx) {
+        verifyRegisteredWithRightExecutor(ctx);
+        ctx.fireChannelRegistered();
+    }
+
+    private void verifyRegisteredWithRightExecutor(ChannelHandlerContext ctx) {
+        if (ctx.channel().isRegistered() && !executor.inEventLoop()) {
+            throw new IllegalArgumentException("Channel handler MUST be registered with the same EventExecutor that it is created with.");
+        }
+    }
+
+    @Override
+    public void channelWritabilityChanged(ChannelHandlerContext ctx) {
+        maybeRequestMore();
+        ctx.fireChannelWritabilityChanged();
+    }
+
+    @Override
+    public void channelActive(ChannelHandlerContext ctx) {
+        if (state == INACTIVE) {
+            state = RUNNING;
+            maybeRequestMore();
+        }
+        ctx.fireChannelActive();
+    }
+
+    @Override
+    public void channelInactive(ChannelHandlerContext ctx) {
+        cancel();
+        ctx.fireChannelInactive();
+    }
+
+    @Override
+    public void handlerRemoved(ChannelHandlerContext ctx)  {
+        cancel();
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        cancel();
+        ctx.fireExceptionCaught(cause);
+    }
+
+    private void cancel() {
+        switch (state) {
+            case NO_SUBSCRIPTION:
+                state = CANCELLED;
+                break;
+            case RUNNING:
+            case INACTIVE:
+                subscription.cancel();
+                state = CANCELLED;
+                break;
+        }
+    }
+
+    @Override
+    public void onSubscribe(final Subscription subscription) {
+        if (subscription == null) {
+            throw new NullPointerException("Null subscription");
+        } else if (!hasSubscription.compareAndSet(false, true)) {
+            subscription.cancel();
+        } else {
+            this.subscription = subscription;
+            executor.execute(this::provideSubscription);
+        }
+    }
+
+    private void provideSubscription() {
+        switch (state) {
+            case NO_SUBSCRIPTION_OR_CONTEXT:
+                state = NO_CONTEXT;
+                break;
+            case NO_SUBSCRIPTION:
+                maybeStart();
+                break;
+            case CANCELLED:
+                subscription.cancel();
+                break;
+        }
+    }
+
+    private void maybeStart() {
+        if (ctx.channel().isActive()) {
+            state = RUNNING;
+            maybeRequestMore();
+        } else {
+            state = INACTIVE;
+        }
+    }
+
+    @Override
+    public void onNext(T t) {
+        lastWriteFuture = ctx.writeAndFlush(t);
+        lastWriteFuture.addListener((ChannelFutureListener) future -> {
+            outstandingDemand--;
+            maybeRequestMore();
+        });
+    }
+
+    @Override
+    public void onError(final Throwable error) {
+        if (error == null) {
+            throw new NullPointerException("Null error published");
+        }
+        error(error);
+    }
+
+    @Override
+    public void onComplete() {
+        if (lastWriteFuture == null) {
+            complete();
+        } else {
+            lastWriteFuture.addListener((ChannelFutureListener) channelFuture -> complete());
+        }
+    }
+
+    private void doClose() {
+        executor.execute(() -> {
+            switch (state) {
+                case NO_SUBSCRIPTION:
+                case INACTIVE:
+                case RUNNING:
+                    ctx.close();
+                    state = COMPLETE;
+                    break;
+            }
+        });
+    }
+
+    private void maybeRequestMore() {
+        if (outstandingDemand <= demandLowWatermark && ctx.channel().isWritable()) {
+            long toRequest = demandHighWatermark - outstandingDemand;
+
+            outstandingDemand = demandHighWatermark;
+            subscription.request(toRequest);
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/HttpStreamsClientHandler.java

@@ -0,0 +1,157 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPromise;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.util.ReferenceCountUtil;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+
+/**
+ * Handler that converts written {@link StreamedHttpRequest} messages into {@link HttpRequest} messages
+ * followed by {@link HttpContent} messages and reads {@link HttpResponse} messages followed by
+ * {@link HttpContent} messages and produces {@link StreamedHttpResponse} messages.
+ *
+ * This allows request and response bodies to be handled using reactive streams.
+ *
+ * There are two types of messages that this handler accepts for writing, {@link StreamedHttpRequest} and
+ * {@link FullHttpRequest}. Writing any other messages may potentially lead to HTTP message mangling.
+ *
+ * There are two types of messages that this handler will send down the chain, {@link StreamedHttpResponse},
+ * and {@link FullHttpResponse}. If {@link io.netty.channel.ChannelOption#AUTO_READ} is false for the channel,
+ * then any {@link StreamedHttpResponse} messages <em>must</em> be subscribed to consume the body, otherwise
+ * it's possible that no read will be done of the messages.
+ *
+ * As long as messages are returned in the order that they arrive, this handler implicitly supports HTTP
+ * pipelining.
+ */
+public class HttpStreamsClientHandler extends HttpStreamsHandler<HttpResponse, HttpRequest> {
+
+    private int inFlight = 0;
+    private int withServer = 0;
+    private ChannelPromise closeOnZeroInFlight = null;
+    private Subscriber<HttpContent> awaiting100Continue;
+    private StreamedHttpMessage awaiting100ContinueMessage;
+    private boolean ignoreResponseBody = false;
+
+    public HttpStreamsClientHandler() {
+        super(HttpResponse.class, HttpRequest.class);
+    }
+
+    @Override
+    protected boolean hasBody(HttpResponse response) {
+        if (response.status().code() >= 100 && response.status().code() < 200) {
+            return false;
+        }
+
+        if (response.status().equals(HttpResponseStatus.NO_CONTENT) ||
+                response.status().equals(HttpResponseStatus.NOT_MODIFIED)) {
+            return false;
+        }
+
+        if (HttpUtil.isTransferEncodingChunked(response)) {
+            return true;
+        }
+
+
+        if (HttpUtil.isContentLengthSet(response)) {
+            return HttpUtil.getContentLength(response) > 0;
+        }
+
+        return true;
+    }
+
+    @Override
+    public void close(ChannelHandlerContext ctx, ChannelPromise future) throws Exception {
+        if (inFlight == 0) {
+            ctx.close(future);
+        } else {
+            closeOnZeroInFlight = future;
+        }
+    }
+
+    @Override
+    protected void consumedInMessage(ChannelHandlerContext ctx) {
+        inFlight--;
+        withServer--;
+        if (inFlight == 0 && closeOnZeroInFlight != null) {
+            ctx.close(closeOnZeroInFlight);
+        }
+    }
+
+    @Override
+    protected void receivedOutMessage(ChannelHandlerContext ctx) {
+        inFlight++;
+    }
+
+    @Override
+    protected void sentOutMessage(ChannelHandlerContext ctx) {
+        withServer++;
+    }
+
+    @Override
+    protected HttpResponse createEmptyMessage(HttpResponse response) {
+        return new EmptyHttpResponse(response);
+    }
+
+    @Override
+    protected HttpResponse createStreamedMessage(HttpResponse response, Publisher<HttpContent> stream) {
+        return new DelegateStreamedHttpResponse(response, stream);
+    }
+
+    @Override
+    protected void subscribeSubscriberToStream(StreamedHttpMessage msg, Subscriber<HttpContent> subscriber) {
+        if (HttpUtil.is100ContinueExpected(msg)) {
+            awaiting100Continue = subscriber;
+            awaiting100ContinueMessage = msg;
+        } else {
+            super.subscribeSubscriberToStream(msg, subscriber);
+        }
+    }
+
+    @Override
+    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+
+        if (msg instanceof HttpResponse && awaiting100Continue != null && withServer == 0) {
+            HttpResponse response = (HttpResponse) msg;
+            if (response.status().equals(HttpResponseStatus.CONTINUE)) {
+                super.subscribeSubscriberToStream(awaiting100ContinueMessage, awaiting100Continue);
+                awaiting100Continue = null;
+                awaiting100ContinueMessage = null;
+                if (msg instanceof FullHttpResponse) {
+                    ReferenceCountUtil.release(msg);
+                } else {
+                    ignoreResponseBody = true;
+                }
+            } else {
+                awaiting100ContinueMessage.subscribe(new CancelledSubscriber<HttpContent>());
+                awaiting100ContinueMessage = null;
+                awaiting100Continue.onSubscribe(new Subscription() {
+                    public void request(long n) {
+                    }
+                    public void cancel() {
+                    }
+                });
+                awaiting100Continue.onComplete();
+                awaiting100Continue = null;
+                super.channelRead(ctx, msg);
+            }
+        } else if (ignoreResponseBody && msg instanceof HttpContent) {
+
+            ReferenceCountUtil.release(msg);
+            if (msg instanceof LastHttpContent) {
+                ignoreResponseBody = false;
+            }
+        } else {
+            super.channelRead(ctx, msg);
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/HttpStreamsHandler.java

@@ -0,0 +1,377 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPromise;
+import io.netty.handler.codec.http.FullHttpMessage;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpMessage;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.util.ReferenceCountUtil;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+
+import java.util.LinkedList;
+import java.util.Queue;
+
+abstract class HttpStreamsHandler<In extends HttpMessage, Out extends HttpMessage> extends ChannelDuplexHandler {
+
+    private final Queue<Outgoing> outgoing = new LinkedList<>();
+
+    private final Class<In> inClass;
+
+    private final Class<Out> outClass;
+
+    public HttpStreamsHandler(Class<In> inClass, Class<Out> outClass) {
+        this.inClass = inClass;
+        this.outClass = outClass;
+    }
+
+    /**
+     * The incoming message that is currently being streamed out to a subscriber.
+     *
+     * This is tracked so that if its subscriber cancels, we can go into a mode where we ignore the rest of the body.
+     * Since subscribers may cancel as many times as they like, including well after they've received all their content,
+     * we need to track what the current message that's being streamed out is so that we can ignore it if it's not
+     * currently being streamed out.
+     */
+    private In currentlyStreamedMessage;
+
+    /**
+     * Ignore the remaining reads for the incoming message.
+     *
+     * This is used in conjunction with currentlyStreamedMessage, as well as in situations where we have received the
+     * full body, but still might be expecting a last http content message.
+     */
+    private boolean ignoreBodyRead;
+
+    /**
+     * Whether a LastHttpContent message needs to be written once the incoming publisher completes.
+     *
+     * Since the publisher may itself publish a LastHttpContent message, we need to track this fact, because if it
+     * doesn't, then we need to write one ourselves.
+     */
+    private boolean sendLastHttpContent;
+
+    /**
+     * Whether the given incoming message has a body.
+     */
+    protected abstract boolean hasBody(In in);
+
+    /**
+     * Create an empty incoming message. This must be of type FullHttpMessage, and is invoked when we've determined
+     * that an incoming message can't have a body, so we send it on as a FullHttpMessage.
+     * @param in input
+     * @return incoming message
+     */
+    protected abstract In createEmptyMessage(In in);
+
+    /**
+     * Create a streamed incoming message with the given stream.
+     * @param in input
+     * @param stream stream
+     */
+    protected abstract In createStreamedMessage(In in, Publisher<HttpContent> stream);
+
+    /**
+     * Invoked when an incoming message is first received.
+     *
+     * Overridden by sub classes for state tracking.
+     * @param ctx channel handler context
+     */
+    protected void receivedInMessage(ChannelHandlerContext ctx) {
+    }
+
+    /**
+     * Invoked when an incoming message is fully consumed.
+     *
+     * Overridden by sub classes for state tracking.
+     * @param ctx channel handler context
+     */
+    protected void consumedInMessage(ChannelHandlerContext ctx) {
+    }
+
+    /**
+     * Invoked when an outgoing message is first received.
+     *
+     * Overridden by sub classes for state tracking.
+     * @param ctx channel handler context
+     */
+    protected void receivedOutMessage(ChannelHandlerContext ctx) {
+    }
+
+    /**
+     * Invoked when an outgoing message is fully sent.
+     *
+     * Overridden by sub classes for state tracking.
+     * @param ctx channel handler context
+     */
+    protected void sentOutMessage(ChannelHandlerContext ctx) {
+    }
+
+    /**
+     * Subscribe the given subscriber to the given streamed message.
+     *
+     * Provided so that the client subclass can intercept this to hold off sending the body of an expect 100 continue
+     * request.
+     */
+    protected void subscribeSubscriberToStream(StreamedHttpMessage msg, Subscriber<HttpContent> subscriber) {
+        msg.subscribe(subscriber);
+    }
+
+    /**
+     * Invoked every time a read of the incoming body is requested by the subscriber.
+     *
+     * Provided so that the server subclass can intercept this to send a 100 continue response.
+     * @param ctx channel handler context
+     */
+    protected void bodyRequested(ChannelHandlerContext ctx) {}
+
+    @Override
+    public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
+
+        if (inClass.isInstance(msg)) {
+
+            receivedInMessage(ctx);
+            final In inMsg = inClass.cast(msg);
+
+            if (inMsg instanceof FullHttpMessage) {
+
+                // Forward as is
+                ctx.fireChannelRead(inMsg);
+                consumedInMessage(ctx);
+
+            } else if (!hasBody(inMsg)) {
+
+                // Wrap in empty message
+                ctx.fireChannelRead(createEmptyMessage(inMsg));
+                consumedInMessage(ctx);
+
+                // There will be a LastHttpContent message coming after this, ignore it
+                ignoreBodyRead = true;
+
+            } else {
+
+                currentlyStreamedMessage = inMsg;
+                // It has a body, stream it
+                HandlerPublisher<HttpContent> publisher = new HandlerPublisher<HttpContent>(ctx.executor(), HttpContent.class) {
+                    @Override
+                    protected void cancelled() {
+                        if (ctx.executor().inEventLoop()) {
+                            handleCancelled(ctx, inMsg);
+                        } else {
+                            ctx.executor().execute(new Runnable() {
+                                @Override
+                                public void run() {
+                                    handleCancelled(ctx, inMsg);
+                                }
+                            });
+                        }
+                    }
+
+                    @Override
+                    protected void requestDemand() {
+                        bodyRequested(ctx);
+                        super.requestDemand();
+                    }
+                };
+
+                ctx.channel().pipeline().addAfter(ctx.name(), ctx.name() + "-body-publisher", publisher);
+                ctx.fireChannelRead(createStreamedMessage(inMsg, publisher));
+            }
+        } else if (msg instanceof HttpContent) {
+            handleReadHttpContent(ctx, (HttpContent) msg);
+        }
+    }
+
+    private void handleCancelled(ChannelHandlerContext ctx, In msg) {
+        if (currentlyStreamedMessage == msg) {
+            ignoreBodyRead = true;
+            // Need to do a read in case the subscriber ignored a read completed.
+            ctx.read();
+        }
+    }
+
+    private void handleReadHttpContent(ChannelHandlerContext ctx, HttpContent content) {
+        if (!ignoreBodyRead) {
+            if (content instanceof LastHttpContent) {
+
+                if (content.content().readableBytes() > 0 ||
+                        !((LastHttpContent) content).trailingHeaders().isEmpty()) {
+                    // It has data or trailing headers, send them
+                    ctx.fireChannelRead(content);
+                } else {
+                    ReferenceCountUtil.release(content);
+                }
+
+                removeHandlerIfActive(ctx, ctx.name() + "-body-publisher");
+                currentlyStreamedMessage = null;
+                consumedInMessage(ctx);
+
+            } else {
+                ctx.fireChannelRead(content);
+            }
+
+        } else {
+            ReferenceCountUtil.release(content);
+            if (content instanceof LastHttpContent) {
+                ignoreBodyRead = false;
+                if (currentlyStreamedMessage != null) {
+                    removeHandlerIfActive(ctx, ctx.name() + "-body-publisher");
+                }
+                currentlyStreamedMessage = null;
+            }
+        }
+    }
+
+    @Override
+    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
+        if (ignoreBodyRead) {
+            ctx.read();
+        } else {
+            ctx.fireChannelReadComplete();
+        }
+    }
+
+    @Override
+    public void write(final ChannelHandlerContext ctx, Object msg, final ChannelPromise promise) throws Exception {
+        if (outClass.isInstance(msg)) {
+
+            Outgoing out = new Outgoing(outClass.cast(msg), promise);
+            receivedOutMessage(ctx);
+
+            if (outgoing.isEmpty()) {
+                outgoing.add(out);
+                flushNext(ctx);
+            } else {
+                outgoing.add(out);
+            }
+
+        } else if (msg instanceof LastHttpContent) {
+
+            sendLastHttpContent = false;
+            ctx.write(msg, promise);
+        } else {
+
+            ctx.write(msg, promise);
+        }
+    }
+
+    protected void unbufferedWrite(final ChannelHandlerContext ctx, final Outgoing out) {
+
+        if (out.message instanceof FullHttpMessage) {
+            // Forward as is
+            ctx.writeAndFlush(out.message, out.promise);
+            out.promise.addListener(new ChannelFutureListener() {
+                @Override
+                public void operationComplete(ChannelFuture channelFuture) throws Exception {
+                    executeInEventLoop(ctx, new Runnable() {
+                        @Override
+                        public void run() {
+                            sentOutMessage(ctx);
+                            outgoing.remove();
+                            flushNext(ctx);
+                        }
+                    });
+                }
+            });
+
+        } else if (out.message instanceof StreamedHttpMessage) {
+
+            StreamedHttpMessage streamed = (StreamedHttpMessage) out.message;
+            HandlerSubscriber<HttpContent> subscriber = new HandlerSubscriber<HttpContent>(ctx.executor()) {
+                @Override
+                protected void error(Throwable error) {
+                    out.promise.tryFailure(error);
+                    ctx.close();
+                }
+
+                @Override
+                protected void complete() {
+                    executeInEventLoop(ctx, new Runnable() {
+                        @Override
+                        public void run() {
+                            completeBody(ctx);
+                        }
+                    });
+                }
+            };
+
+            sendLastHttpContent = true;
+
+            // DON'T pass the promise through, create a new promise instead.
+            ctx.writeAndFlush(out.message);
+
+            ctx.pipeline().addAfter(ctx.name(), ctx.name() + "-body-subscriber", subscriber);
+            subscribeSubscriberToStream(streamed, subscriber);
+        }
+
+    }
+
+    private void completeBody(final ChannelHandlerContext ctx) {
+        removeHandlerIfActive(ctx, ctx.name() + "-body-subscriber");
+
+        if (sendLastHttpContent) {
+            ChannelPromise promise = outgoing.peek().promise;
+            ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT, promise).addListener(
+                    new ChannelFutureListener() {
+                        @Override
+                        public void operationComplete(ChannelFuture channelFuture) throws Exception {
+                            executeInEventLoop(ctx, new Runnable() {
+                                @Override
+                                public void run() {
+                                    outgoing.remove();
+                                    sentOutMessage(ctx);
+                                    flushNext(ctx);
+                                }
+                            });
+                        }
+                    }
+            );
+        } else {
+            outgoing.remove().promise.setSuccess();
+            sentOutMessage(ctx);
+            flushNext(ctx);
+        }
+    }
+
+    /**
+     * Most operations we want to do even if the channel is not active, because if it's not, then we want to encounter
+     * the error that occurs when that operation happens and so that it can be passed up to the user. However, removing
+     * handlers should only be done if the channel is active, because the error that is encountered when they aren't
+     * makes no sense to the user (NoSuchElementException).
+     */
+    private void removeHandlerIfActive(ChannelHandlerContext ctx, String name) {
+        if (ctx.channel().isActive()) {
+            ctx.pipeline().remove(name);
+        }
+    }
+
+    private void flushNext(ChannelHandlerContext ctx) {
+        if (!outgoing.isEmpty()) {
+            unbufferedWrite(ctx, outgoing.element());
+        } else {
+            ctx.fireChannelWritabilityChanged();
+        }
+    }
+
+    private void executeInEventLoop(ChannelHandlerContext ctx, Runnable runnable) {
+        if (ctx.executor().inEventLoop()) {
+            runnable.run();
+        } else {
+            ctx.executor().execute(runnable);
+        }
+    }
+
+    class Outgoing {
+        final Out message;
+        final ChannelPromise promise;
+
+        public Outgoing(Out message, ChannelPromise promise) {
+            this.message = message;
+            this.promise = promise;
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/HttpStreamsServerHandler.java

@@ -0,0 +1,239 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.channel.ChannelHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPipeline;
+import io.netty.handler.codec.http.DefaultFullHttpResponse;
+import io.netty.handler.codec.http.FullHttpRequest;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpHeaderNames;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.handler.codec.http.websocketx.WebSocketFrame;
+import io.netty.handler.codec.http.websocketx.WebSocketServerHandshaker;
+import io.netty.handler.codec.http.websocketx.WebSocketVersion;
+import org.reactivestreams.Publisher;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+/**
+ * Handler that reads {@link HttpRequest} messages followed by {@link HttpContent} messages and produces
+ * {@link StreamedHttpRequest} messages, and converts written {@link StreamedHttpResponse} messages into
+ * {@link HttpResponse} messages followed by {@link HttpContent} messages.
+ *
+ * This allows request and response bodies to be handled using reactive streams.
+ *
+ * There are two types of messages that this handler will send down the chain, {@link StreamedHttpRequest},
+ * and {@link FullHttpRequest}. If {@link io.netty.channel.ChannelOption#AUTO_READ} is false for the channel,
+ * then any {@link StreamedHttpRequest} messages <em>must</em> be subscribed to consume the body, otherwise
+ * it's possible that no read will be done of the messages.
+ *
+ * There are three types of messages that this handler accepts for writing, {@link StreamedHttpResponse},
+ * {@link WebSocketHttpResponse} and {@link FullHttpResponse}. Writing any other messages may potentially
+ * lead to HTTP message mangling.
+ *
+ * As long as messages are returned in the order that they arrive, this handler implicitly supports HTTP
+ * pipelining.
+ */
+public class HttpStreamsServerHandler extends HttpStreamsHandler<HttpRequest, HttpResponse> {
+
+    private HttpRequest lastRequest = null;
+    private Outgoing webSocketResponse = null;
+    private int inFlight = 0;
+    private boolean continueExpected = true;
+    private boolean sendContinue = false;
+    private boolean close = false;
+
+    private final List<ChannelHandler> dependentHandlers;
+
+    public HttpStreamsServerHandler() {
+        this(Collections.<ChannelHandler>emptyList());
+    }
+
+    /**
+     * Create a new handler that is depended on by the given handlers.
+     *
+     * The list of dependent handlers will be removed from the chain when this handler is removed from the chain,
+     * for example, when the connection is upgraded to use websockets. This is useful, for example, for removing
+     * the reactive streams publisher/subscriber from the chain in that event.
+     *
+     * @param dependentHandlers The handlers that depend on this handler.
+     */
+    public HttpStreamsServerHandler(List<ChannelHandler> dependentHandlers) {
+        super(HttpRequest.class, HttpResponse.class);
+        this.dependentHandlers = dependentHandlers;
+    }
+
+    @Override
+    protected boolean hasBody(HttpRequest request) {
+        // Http requests don't have a body if they define 0 content length, or no content length and no transfer
+        // encoding
+        return HttpUtil.getContentLength(request, 0) != 0 || HttpUtil.isTransferEncodingChunked(request);
+    }
+
+    @Override
+    protected HttpRequest createEmptyMessage(HttpRequest request) {
+        return new EmptyHttpRequest(request);
+    }
+
+    @Override
+    protected HttpRequest createStreamedMessage(HttpRequest httpRequest, Publisher<HttpContent> stream) {
+        return new DelegateStreamedHttpRequest(httpRequest, stream);
+    }
+
+    @Override
+    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+        // Set to false, since if it was true, and the client is sending data, then the
+        // client must no longer be expecting it (due to a timeout, for example).
+        continueExpected = false;
+        sendContinue = false;
+
+        if (msg instanceof HttpRequest) {
+            HttpRequest request = (HttpRequest) msg;
+            lastRequest = request;
+            if (HttpUtil.is100ContinueExpected(request)) {
+                continueExpected = true;
+            }
+        }
+        super.channelRead(ctx, msg);
+    }
+
+    @Override
+    protected void receivedInMessage(ChannelHandlerContext ctx) {
+        inFlight++;
+    }
+
+    @Override
+    protected void sentOutMessage(ChannelHandlerContext ctx) {
+        inFlight--;
+        if (inFlight == 1 && continueExpected && sendContinue) {
+            ctx.writeAndFlush(new DefaultFullHttpResponse(lastRequest.protocolVersion(), HttpResponseStatus.CONTINUE));
+            sendContinue = false;
+            continueExpected = false;
+        }
+
+        if (close) {
+            ctx.close();
+        }
+    }
+
+    @Override
+    protected void unbufferedWrite(ChannelHandlerContext ctx, HttpStreamsHandler<HttpRequest, HttpResponse>.Outgoing out) {
+
+        if (out.message instanceof WebSocketHttpResponse) {
+            if ((lastRequest instanceof FullHttpRequest) || !hasBody(lastRequest)) {
+                handleWebSocketResponse(ctx, out);
+            } else {
+                // If the response has a streamed body, then we can't send the WebSocket response until we've received
+                // the body.
+                webSocketResponse = out;
+            }
+        } else {
+            String connection = out.message.headers().get(HttpHeaderNames.CONNECTION);
+            if (lastRequest.protocolVersion().isKeepAliveDefault()) {
+                if ("close".equalsIgnoreCase(connection)) {
+                    close = true;
+                }
+            } else {
+                if (!"keep-alive".equalsIgnoreCase(connection)) {
+                    close = true;
+                }
+            }
+            if (inFlight == 1 && continueExpected) {
+                HttpUtil.setKeepAlive(out.message, false);
+                close = true;
+                continueExpected = false;
+            }
+            // According to RFC 7230 a server MUST NOT send a Content-Length or a Transfer-Encoding when the status
+            // code is 1xx or 204, also a status code 304 may not have a Content-Length or Transfer-Encoding set.
+            if (!HttpUtil.isContentLengthSet(out.message) && !HttpUtil.isTransferEncodingChunked(out.message)
+                    && canHaveBody(out.message)) {
+                HttpUtil.setKeepAlive(out.message, false);
+                close = true;
+            }
+            super.unbufferedWrite(ctx, out);
+        }
+    }
+
+    private boolean canHaveBody(HttpResponse message) {
+        HttpResponseStatus status = message.status();
+        // All 1xx (Informational), 204 (No Content), and 304 (Not Modified)
+        // responses do not include a message body
+        return !(status == HttpResponseStatus.CONTINUE || status == HttpResponseStatus.SWITCHING_PROTOCOLS ||
+                status == HttpResponseStatus.PROCESSING || status == HttpResponseStatus.NO_CONTENT ||
+                status == HttpResponseStatus.NOT_MODIFIED);
+    }
+
+    @Override
+    protected void consumedInMessage(ChannelHandlerContext ctx) {
+        if (webSocketResponse != null) {
+            handleWebSocketResponse(ctx, webSocketResponse);
+            webSocketResponse = null;
+        }
+    }
+
+    private void handleWebSocketResponse(ChannelHandlerContext ctx, Outgoing out) {
+        WebSocketHttpResponse response = (WebSocketHttpResponse) out.message;
+        WebSocketServerHandshaker handshaker = response.handshakerFactory().newHandshaker(lastRequest);
+
+        if (handshaker == null) {
+            HttpResponse res = new DefaultFullHttpResponse(
+                    HttpVersion.HTTP_1_1,
+                    HttpResponseStatus.UPGRADE_REQUIRED);
+            res.headers().set(HttpHeaderNames.SEC_WEBSOCKET_VERSION, WebSocketVersion.V13.toHttpHeaderValue());
+            HttpUtil.setContentLength(res, 0);
+            super.unbufferedWrite(ctx, new Outgoing(res, out.promise));
+            response.subscribe(new CancelledSubscriber<>());
+        } else {
+            // First, insert new handlers in the chain after us for handling the websocket
+            ChannelPipeline pipeline = ctx.pipeline();
+            HandlerPublisher<WebSocketFrame> publisher = new HandlerPublisher<>(ctx.executor(), WebSocketFrame.class);
+            HandlerSubscriber<WebSocketFrame> subscriber = new HandlerSubscriber<>(ctx.executor());
+            pipeline.addAfter(ctx.executor(), ctx.name(), "websocket-subscriber", subscriber);
+            pipeline.addAfter(ctx.executor(), ctx.name(), "websocket-publisher", publisher);
+
+            // Now remove ourselves from the chain
+            ctx.pipeline().remove(ctx.name());
+
+            // Now do the handshake
+            // Wrap the request in an empty request because we don't need the WebSocket handshaker ignoring the body,
+            // we already have handled the body.
+            handshaker.handshake(ctx.channel(), new EmptyHttpRequest(lastRequest));
+
+            // And hook up the subscriber/publishers
+            response.subscribe(subscriber);
+            publisher.subscribe(response);
+        }
+
+    }
+
+    @Override
+    protected void bodyRequested(ChannelHandlerContext ctx) {
+        if (continueExpected) {
+            if (inFlight == 1) {
+                ctx.writeAndFlush(new DefaultFullHttpResponse(lastRequest.protocolVersion(), HttpResponseStatus.CONTINUE));
+                continueExpected = false;
+            } else {
+                sendContinue = true;
+            }
+        }
+    }
+
+    @Override
+    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
+        super.handlerRemoved(ctx);
+        for (ChannelHandler dependent: dependentHandlers) {
+            try {
+                ctx.pipeline().remove(dependent);
+            } catch (NoSuchElementException e) {
+                // Ignore, maybe something else removed it
+            }
+        }
+    }
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/StreamedHttpMessage.java

@@ -0,0 +1,16 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpMessage;
+import org.reactivestreams.Publisher;
+
+/**
+ * Combines {@link HttpMessage} and {@link Publisher} into one
+ * message. So it represents an http message with a stream of {@link HttpContent}
+ * messages that can be subscribed to.
+ *
+ * Note that receivers of this message <em>must</em> consume the publisher,
+ * since the publisher will exert back pressure up the stream if not consumed.
+ */
+public interface StreamedHttpMessage extends HttpMessage, Publisher<HttpContent> {
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/StreamedHttpRequest.java

@@ -0,0 +1,11 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpRequest;
+
+/**
+ * Combines {@link HttpRequest} and {@link StreamedHttpMessage} into one
+ * message. So it represents an http request with a stream of
+ * {@link io.netty.handler.codec.http.HttpContent} messages that can be subscribed to.
+ */
+public interface StreamedHttpRequest extends HttpRequest, StreamedHttpMessage {
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/StreamedHttpResponse.java

@@ -0,0 +1,11 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpResponse;
+
+/**
+ * Combines {@link HttpResponse} and {@link StreamedHttpMessage} into one
+ * message. So it represents an http response with a stream of
+ * {@link io.netty.handler.codec.http.HttpContent} messages that can be subscribed to.
+ */
+public interface StreamedHttpResponse extends HttpResponse, StreamedHttpMessage {
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/reactive/WebSocketHttpResponse.java

@@ -0,0 +1,24 @@
+package org.xbib.netty.http.server.reactive;
+
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.websocketx.WebSocketFrame;
+import io.netty.handler.codec.http.websocketx.WebSocketServerHandshakerFactory;
+import org.reactivestreams.Processor;
+
+
+/**
+ * Combines {@link HttpResponse} and {@link Processor}
+ * into one message. So it represents an http response with a processor that can handle
+ * a WebSocket.
+ *
+ * This is only used for server side responses. For client side websocket requests, it's
+ * better to configure the reactive streams pipeline directly.
+ */
+public interface WebSocketHttpResponse extends HttpResponse, Processor<WebSocketFrame, WebSocketFrame> {
+    /**
+     * Get the handshaker factory to use to reconfigure the channel.
+     *
+     * @return The handshaker factory.
+     */
+    WebSocketServerHandshakerFactory handshakerFactory();
+}

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/BaseServerTransport.java

@@ -8,6 +8,7 @@ import io.netty.handler.codec.http.HttpVersion;
 import org.xbib.netty.http.server.Server;
 import org.xbib.netty.http.server.ServerRequest;
 import org.xbib.netty.http.server.ServerResponse;
+import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -36,51 +37,49 @@ abstract class BaseServerTransport implements ServerTransport {
      * and required special header handling, possibly returning an
      * appropriate response.
      *
+     * @param namedServer the named server
      * @param serverRequest  the request
      * @param serverResponse the response
      * @return whether further processing should be performed
      */
-    static boolean acceptRequest(ServerRequest serverRequest, ServerResponse serverResponse) {
+    static boolean acceptRequest(NamedServer namedServer, ServerRequest serverRequest, ServerResponse serverResponse) {
         HttpHeaders reqHeaders = serverRequest.getRequest().headers();
-        HttpVersion version = serverRequest.getNamedServer().getHttpAddress().getVersion();
+        HttpVersion version = namedServer.getHttpAddress().getVersion();
-        switch (version.majorVersion()) {
+        if (version.majorVersion() == 1 || version.majorVersion() == 2) {
-            case 1:
+            if (!reqHeaders.contains(HttpHeaderNames.HOST)) {
-            case 2:
+                // RFC2616#14.23: missing Host header gets 400
-                if (!reqHeaders.contains(HttpHeaderNames.HOST)) {
+                ServerResponse.write(serverResponse, HttpResponseStatus.BAD_REQUEST, "missing 'Host' header");
-                    // RFC2616#14.23: missing Host header gets 400
+                return false;
-                    serverResponse.writeError(HttpResponseStatus.BAD_REQUEST, "missing 'Host' header");
+            }
+            // return a continue response before reading body
+            String expect = reqHeaders.get(HttpHeaderNames.EXPECT);
+            if (expect != null) {
+                if (expect.equalsIgnoreCase("100-continue")) {
+                    //ServerResponse tempResp = new ServerResponse(serverResponse);
+                    //tempResp.sendHeaders(100);
+                } else {
+                    // RFC2616#14.20: if unknown expect, send 417
+                    ServerResponse.write(serverResponse, HttpResponseStatus.EXPECTATION_FAILED);
                     return false;
                 }
-                // return a continue response before reading body
+            }
-                String expect = reqHeaders.get(HttpHeaderNames.EXPECT);
+        } else {
-                if (expect != null) {
+            ServerResponse.write(serverResponse, HttpResponseStatus.BAD_REQUEST, "unsupported HTTP version: " + version);
-                    if (expect.equalsIgnoreCase("100-continue")) {
+            return false;
-                        //ServerResponse tempResp = new ServerResponse(serverResponse);
-                        //tempResp.sendHeaders(100);
-                    } else {
-                        // RFC2616#14.20: if unknown expect, send 417
-                        serverResponse.writeError(HttpResponseStatus.EXPECTATION_FAILED);
-                        return false;
-                    }
-                }
-                break;
-            default:
-                serverResponse.writeError(HttpResponseStatus.BAD_REQUEST, "Unknown version: " + version);
-                return false;
         }
         return true;
     }
 
     /**
      * Handles a request according to the request method.
-     *
+     * @param namedServer the named server
      * @param serverRequest  the request
      * @param serverResponse the response (into which the response is written)
      * @throws IOException if and error occurs
      */
-    static void handle(HttpServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
+    static void handle(NamedServer namedServer, HttpServerRequest serverRequest, ServerResponse serverResponse) throws IOException {
-        // parse parameters from path and parse body, if required
+        // create server URL and parse parameters from query string, path, and parse body, if exists
         serverRequest.createParameters();
-        serverRequest.getNamedServer().execute(serverRequest, serverResponse);
+        namedServer.execute(serverRequest, serverResponse);
     }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/Http2ServerResponse.java

@@ -1,8 +1,10 @@
 package org.xbib.netty.http.server.transport;
 
 import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.http.HttpChunkedInput;
 import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpHeaderValues;
 import io.netty.handler.codec.http.HttpResponseStatus;
@@ -13,13 +15,14 @@ import io.netty.handler.codec.http2.Http2DataFrame;
 import io.netty.handler.codec.http2.Http2Headers;
 import io.netty.handler.codec.http2.Http2HeadersFrame;
 import io.netty.handler.codec.http2.HttpConversionUtil;
+import io.netty.handler.stream.ChunkedInput;
+import io.netty.handler.stream.ChunkedNioStream;
 import io.netty.util.AsciiString;
 import org.xbib.netty.http.server.ServerName;
 import org.xbib.netty.http.server.ServerRequest;
 import org.xbib.netty.http.server.ServerResponse;
 
-import java.nio.CharBuffer;
+import java.nio.channels.ReadableByteChannel;
-import java.nio.charset.Charset;
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
@@ -52,47 +55,16 @@ public class Http2ServerResponse implements ServerResponse {
         headers.set(name, value);
     }
 
+    @Override
+    public ChannelHandlerContext getChannelHandlerContext() {
+        return ctx;
+    }
+
     @Override
     public HttpResponseStatus getLastStatus() {
         return httpResponseStatus;
     }
 
-    @Override
-    public void write(String text) {
-        write(HttpResponseStatus.OK, "text/plain; charset=utf-8", text);
-    }
-
-    @Override
-    public void writeError(HttpResponseStatus status) {
-        writeError(status, status.reasonPhrase());
-    }
-
-    /**
-     * Sends an error response with the given status and detailed message.
-     *
-     * @param status the response status
-     * @param text   the text body
-     */
-    @Override
-    public void writeError(HttpResponseStatus status, String text) {
-        write(status, "text/plain; charset=utf-8", status.code() + " " + text);
-    }
-
-    @Override
-    public void write(HttpResponseStatus status) {
-        write(status, null, (ByteBuf) null);
-    }
-
-    @Override
-    public void write(HttpResponseStatus status, String contentType, String text) {
-        write(status, contentType, ByteBufUtil.writeUtf8(ctx.alloc(), text));
-    }
-
-    @Override
-    public void write(HttpResponseStatus status, String contentType, String text, Charset charset) {
-        write(status, contentType, ByteBufUtil.encodeString(ctx.alloc(), CharBuffer.allocate(text.length()).append(text), charset));
-    }
-
     @Override
     public void write(HttpResponseStatus status, String contentType, ByteBuf byteBuf) {
         if (byteBuf != null) {
@@ -124,60 +96,55 @@ public class Http2ServerResponse implements ServerResponse {
                 headers.setInt(HttpConversionUtil.ExtensionHeaderNames.STREAM_ID.text(), streamId);
             }
         }
-        Http2Headers http2Headers = new DefaultHttp2Headers().status(status.codeAsText()).add(headers);
+        if (ctx.channel().isWritable()) {
-        Http2HeadersFrame http2HeadersFrame = new DefaultHttp2HeadersFrame(http2Headers,byteBuf == null);
+            Http2Headers http2Headers = new DefaultHttp2Headers().status(status.codeAsText()).add(headers);
-        logger.log(Level.FINEST, http2HeadersFrame::toString);
+            Http2HeadersFrame http2HeadersFrame = new DefaultHttp2HeadersFrame(http2Headers, byteBuf == null);
-        ctx.channel().write(http2HeadersFrame);
+            logger.log(Level.FINEST, http2HeadersFrame::toString);
-        this.httpResponseStatus = status;
+            ctx.channel().write(http2HeadersFrame);
-        if (byteBuf != null) {
+            this.httpResponseStatus = status;
-            Http2DataFrame http2DataFrame = new DefaultHttp2DataFrame(byteBuf, true);
+            if (byteBuf != null) {
-            logger.log(Level.FINEST, http2DataFrame::toString);
+                Http2DataFrame http2DataFrame = new DefaultHttp2DataFrame(byteBuf, true);
-            ctx.channel().write(http2DataFrame);
+                logger.log(Level.FINEST, http2DataFrame::toString);
+                ctx.channel().write(http2DataFrame);
+            }
+            ctx.channel().flush();
         }
-        ctx.channel().flush();
     }
 
     /**
-     * Returns an HTML-escaped version of the given string for safe display
+     * Chunked response from a readable byte channel.
-     * within a web page. The characters '&', '>' and '<' must always
-     * be escaped, and single and double quotes must be escaped within
-     * attribute values; this method escapes them always. This method can
-     * be used for generating both HTML and XHTML valid content.
      *
-     * @param s the string to escape
+     * @param status status
-     * @return the escaped string
+     * @param contentType content type
-     * @see <a href="http://www.w3.org/International/questions/qa-escapes">The W3C FAQ</a>
+     * @param byteChannel byte channel
      */
-    private static String escapeHTML(String s) {
+    @Override
-        int len = s.length();
+    public void write(HttpResponseStatus status, String contentType, ReadableByteChannel byteChannel) {
-        StringBuilder es = new StringBuilder(len + 30);
+        CharSequence s = headers.get(HttpHeaderNames.CONTENT_TYPE);
-        int start = 0;
+        if (s == null) {
-        for (int i = 0; i < len; i++) {
+            s = contentType != null ? contentType : HttpHeaderValues.APPLICATION_OCTET_STREAM;
-            String ref = null;
+            headers.add(HttpHeaderNames.CONTENT_TYPE, s);
-            switch (s.charAt(i)) {
+        }
-                case '&':
+        headers.add(HttpHeaderNames.TRANSFER_ENCODING, "chunked");
-                    ref = "&amp;";
+        if (!headers.contains(HttpHeaderNames.DATE)) {
-                    break;
+            headers.add(HttpHeaderNames.DATE, DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now(ZoneOffset.UTC)));
-                case '>':
+        }
-                    ref = "&gt;";
+        headers.add(HttpHeaderNames.SERVER, ServerName.getServerName());
-                    break;
+        if (ctx.channel().isWritable()) {
-                case '<':
+            Http2Headers http2Headers = new DefaultHttp2Headers().status(status.codeAsText()).add(headers);
-                    ref = "&lt;";
+            Http2HeadersFrame http2HeadersFrame = new DefaultHttp2HeadersFrame(http2Headers,false);
-                    break;
+            logger.log(Level.FINEST, http2HeadersFrame::toString);
-                case '"':
+            ctx.channel().write(http2HeadersFrame);
-                    ref = "&quot;";
+            ChunkedInput<ByteBuf> input = new ChunkedNioStream(byteChannel);
-                    break;
+            HttpChunkedInput httpChunkedInput = new HttpChunkedInput(input);
-                case '\'':
+            ChannelFuture channelFuture = ctx.channel().writeAndFlush(httpChunkedInput);
-                    ref = "&#39;";
+            if ("close".equalsIgnoreCase(serverRequest.getRequest().headers().get(HttpHeaderNames.CONNECTION)) &&
-                    break;
+                    !headers.contains(HttpHeaderNames.CONNECTION)) {
-                default:
+                channelFuture.addListener(ChannelFutureListener.CLOSE);
-                    break;
+            }
-            }
+            httpResponseStatus = status;
-            if (ref != null) {
+        } else {
-                es.append(s, start, i).append(ref);
+            logger.log(Level.WARNING, "channel not writeable");
-                start = i + 1;
-            }
         }
-        return start == 0 ? s : es.append(s.substring(start)).toString();
     }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/Http2ServerTransport.java

@@ -32,17 +32,16 @@ public class Http2ServerTransport extends BaseServerTransport {
         }
         Integer streamId = fullHttpRequest.headers().getInt(HttpConversionUtil.ExtensionHeaderNames.STREAM_ID.text());
         HttpServerRequest serverRequest = new HttpServerRequest();
-        serverRequest.setNamedServer(namedServer);
         serverRequest.setChannelHandlerContext(ctx);
         serverRequest.setRequest(fullHttpRequest);
         serverRequest.setSequenceId(sequenceId);
         serverRequest.setRequestId(requestId);
         serverRequest.setStreamId(streamId);
         ServerResponse serverResponse = new Http2ServerResponse(serverRequest);
-        if (acceptRequest(serverRequest, serverResponse)) {
+        if (acceptRequest(namedServer, serverRequest, serverResponse)) {
-            handle(serverRequest, serverResponse);
+            handle(namedServer, serverRequest, serverResponse);
         } else {
-           serverResponse.write(HttpResponseStatus.NOT_ACCEPTABLE);
+           ServerResponse.write(serverResponse, HttpResponseStatus.NOT_ACCEPTABLE);
         }
     }
 

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/HttpServerRequest.java

@@ -8,12 +8,12 @@ import org.xbib.net.QueryParameters;
 import org.xbib.net.URL;
 import org.xbib.netty.http.common.HttpParameters;
 import org.xbib.netty.http.server.ServerRequest;
-import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
 import java.nio.charset.MalformedInputException;
 import java.nio.charset.StandardCharsets;
 import java.nio.charset.UnmappableCharacterException;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.logging.Level;
@@ -30,33 +30,28 @@ public class HttpServerRequest implements ServerRequest {
 
     private static final CharSequence APPLICATION_FORM_URL_ENCODED = "application/x-www-form-urlencoded";
 
-    private NamedServer namedServer;
-
     private ChannelHandlerContext ctx;
 
     private List<String> context;
 
-    private Map<String, String> pathParameters;
+    private String contextPath;
+
+    private Map<String, String> pathParameters = new LinkedHashMap<>();
 
     private FullHttpRequest httpRequest;
 
+    private EndpointInfo info;
+
     private HttpParameters parameters;
 
+    private URL url;
+
     private Integer sequenceId;
 
     private Integer streamId;
 
     private Integer requestId;
 
-    public void setNamedServer(NamedServer namedServer) {
-        this.namedServer = namedServer;
-    }
-
-    @Override
-    public NamedServer getNamedServer() {
-        return namedServer;
-    }
-
     public void setChannelHandlerContext(ChannelHandlerContext ctx) {
         this.ctx = ctx;
     }
@@ -68,6 +63,7 @@ public class HttpServerRequest implements ServerRequest {
 
     public void setRequest(FullHttpRequest fullHttpRequest) {
         this.httpRequest = fullHttpRequest;
+        this.info = new EndpointInfo(this);
     }
 
     @Override
@@ -75,8 +71,20 @@ public class HttpServerRequest implements ServerRequest {
         return httpRequest;
     }
 
+    @Override
+    public URL getURL() {
+        return url;
+    }
+
+    @Override
+    public EndpointInfo getEndpointInfo() {
+        return info;
+    }
+
+    @Override
     public void setContext(List<String> context) {
         this.context = context;
+        this.contextPath = context != null ? PATH_SEPARATOR + String.join(PATH_SEPARATOR, context) : null;
     }
 
     @Override
@@ -86,18 +94,23 @@ public class HttpServerRequest implements ServerRequest {
 
     @Override
     public String getContextPath() {
-        return String.join(PATH_SEPARATOR, context);
+        return contextPath;
     }
 
     @Override
     public String getEffectiveRequestPath() {
-        String uri = httpRequest.uri();
+        String path = getEndpointInfo().getPath();
-        return context != null && !context.isEmpty() && uri.length() > 1 ?
+        String effective = contextPath != null && !PATH_SEPARATOR.equals(contextPath) && path.startsWith(contextPath) ?
-                uri.substring(getContextPath().length() + 2) : uri;
+                path.substring(contextPath.length()) : path;
+        effective = effective.isEmpty() ? PATH_SEPARATOR : effective;
+        logger.log(Level.FINE, "path=" + path + " contextpath=" + contextPath + " effective=" + effective);
+        return effective;
     }
 
-    public void setPathParameters(Map<String, String> pathParameters) {
+    @Override
-        this.pathParameters = pathParameters;
+    public void addPathParameter(String key, String value) throws IOException {
+        pathParameters.put(key, value);
+        parameters.add(key, value);
     }
 
     @Override
@@ -108,7 +121,19 @@ public class HttpServerRequest implements ServerRequest {
     @Override
     public void createParameters() throws IOException {
         try {
-            buildParameters();
+            HttpParameters httpParameters = new HttpParameters();
+            URL.Builder builder = URL.builder().path(getRequest().uri());
+            this.url = builder.build();
+            QueryParameters queryParameters = url.getQueryParams();
+            ByteBuf byteBuf = httpRequest.content();
+            if (APPLICATION_FORM_URL_ENCODED.equals(HttpUtil.getMimeType(httpRequest)) && byteBuf != null) {
+                String content = byteBuf.toString(HttpUtil.getCharset(httpRequest, StandardCharsets.ISO_8859_1));
+                queryParameters.addPercentEncodedBody(content);
+            }
+            for (QueryParameters.Pair<String, String> pair : queryParameters) {
+                httpParameters.add(pair.getFirst(), pair.getSecond());
+            }
+            this.parameters = httpParameters;
         } catch (MalformedInputException | UnmappableCharacterException e) {
             throw new IOException(e);
         }
@@ -146,30 +171,7 @@ public class HttpServerRequest implements ServerRequest {
         return requestId;
     }
 
-    private void buildParameters() throws MalformedInputException, UnmappableCharacterException {
-        HttpParameters httpParameters = new HttpParameters();
-        URL.Builder builder = URL.builder().path(getEffectiveRequestPath());
-        if (pathParameters != null && !pathParameters.isEmpty()) {
-            for (Map.Entry<String, String> entry : pathParameters.entrySet()) {
-                builder.queryParam(entry.getKey(), entry.getValue());
-            }
-        }
-        QueryParameters queryParameters = builder.build().getQueryParams();
-        ByteBuf byteBuf = httpRequest.content();
-        if (APPLICATION_FORM_URL_ENCODED.equals(HttpUtil.getMimeType(httpRequest)) && byteBuf != null) {
-            String content = byteBuf.toString(HttpUtil.getCharset(httpRequest, StandardCharsets.ISO_8859_1));
-            queryParameters.addPercentEncodedBody(content);
-        }
-        for (QueryParameters.Pair<String, String> pair : queryParameters) {
-            httpParameters.add(pair.getFirst(), pair.getSecond());
-        }
-        this.parameters = httpParameters;
-    }
-
     public String toString() {
-        return "ServerRequest[namedServer=" + namedServer +
+        return "ServerRequest[request=" + httpRequest + "]";
-                ",context=" + context +
-                ",request=" + httpRequest +
-                "]";
     }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/HttpServerResponse.java

@@ -1,24 +1,29 @@
 package org.xbib.netty.http.server.transport;
 
 import io.netty.buffer.ByteBuf;
-import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.http.DefaultFullHttpResponse;
 import io.netty.handler.codec.http.DefaultHttpHeaders;
+import io.netty.handler.codec.http.DefaultHttpResponse;
 import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpChunkedInput;
 import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpHeaderValues;
 import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpResponse;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.handler.codec.http.HttpVersion;
+import io.netty.handler.stream.ChunkedInput;
+import io.netty.handler.stream.ChunkedNioStream;
 import io.netty.util.AsciiString;
 import org.xbib.netty.http.server.ServerName;
 import org.xbib.netty.http.server.ServerRequest;
 import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.handler.http.HttpPipelinedResponse;
 
-import java.nio.CharBuffer;
+import java.nio.channels.ReadableByteChannel;
-import java.nio.charset.Charset;
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
@@ -26,12 +31,12 @@ import java.util.Objects;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import static io.netty.handler.codec.http.LastHttpContent.EMPTY_LAST_CONTENT;
+
 public class HttpServerResponse implements ServerResponse {
 
     private static final Logger logger = Logger.getLogger(HttpServerResponse.class.getName());
 
-    private static final String EMPTY_STRING = "";
-
     private final ServerRequest serverRequest;
 
     private final ChannelHandlerContext ctx;
@@ -56,52 +61,16 @@ public class HttpServerResponse implements ServerResponse {
         headers.set(name, value);
     }
 
+    @Override
+    public ChannelHandlerContext getChannelHandlerContext() {
+        return ctx;
+    }
+
     @Override
     public HttpResponseStatus getLastStatus() {
         return httpResponseStatus;
     }
 
-    @Override
-    public void write(String text) {
-        write(HttpResponseStatus.OK, "text/plain; charset=utf-8", text);
-    }
-
-    /**
-     * Sends an error response with the given status and default body.
-     *
-     * @param status the response status
-     */
-    @Override
-    public void writeError(HttpResponseStatus status) {
-        writeError(status, status.reasonPhrase());
-    }
-
-    /**
-     * Sends an error response with the given status and detailed message.
-     *
-     * @param status the response status
-     * @param text   the text body
-     */
-    @Override
-    public void writeError(HttpResponseStatus status, String text) {
-        write(status, "text/plain; charset=utf-8", status.code() + " " + text);
-    }
-
-    @Override
-    public void write(HttpResponseStatus status) {
-        write(status, "application/octet-stream", EMPTY_STRING);
-    }
-
-    @Override
-    public void write(HttpResponseStatus status, String contentType, String text) {
-        write(status, contentType, ByteBufUtil.writeUtf8(ctx.alloc(), text));
-    }
-
-    @Override
-    public void write(HttpResponseStatus status, String contentType, String text, Charset charset) {
-        write(status, contentType, ByteBufUtil.encodeString(ctx.alloc(), CharBuffer.allocate(text.length()).append(text), charset));
-    }
-
     @Override
     public void write(HttpResponseStatus status, String contentType, ByteBuf byteBuf) {
         Objects.requireNonNull(byteBuf);
@@ -112,11 +81,7 @@ public class HttpServerResponse implements ServerResponse {
         }
         if (!headers.contains(HttpHeaderNames.CONTENT_LENGTH) && !headers.contains(HttpHeaderNames.TRANSFER_ENCODING)) {
             int length = byteBuf.readableBytes();
-            if (length < 0) {
+            headers.add(HttpHeaderNames.CONTENT_LENGTH, Long.toString(length));
-                headers.add(HttpHeaderNames.TRANSFER_ENCODING, "chunked");
-            } else {
-                headers.add(HttpHeaderNames.CONTENT_LENGTH, Long.toString(length));
-            }
         }
         if (serverRequest != null && "close".equalsIgnoreCase(serverRequest.getRequest().headers().get(HttpHeaderNames.CONNECTION)) &&
                 !headers.contains(HttpHeaderNames.CONNECTION)) {
@@ -126,26 +91,57 @@ public class HttpServerResponse implements ServerResponse {
             headers.add(HttpHeaderNames.DATE, DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now(ZoneOffset.UTC)));
         }
         headers.add(HttpHeaderNames.SERVER, ServerName.getServerName());
-        FullHttpResponse fullHttpResponse =
+        if (ctx.channel().isWritable()) {
-                new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status, byteBuf, headers, trailingHeaders);
+            FullHttpResponse fullHttpResponse =
-        if (serverRequest != null && serverRequest.getSequenceId() != null) {
+                    new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status, byteBuf, headers, trailingHeaders);
-            HttpPipelinedResponse httpPipelinedResponse = new HttpPipelinedResponse(fullHttpResponse,
+            if (serverRequest != null && serverRequest.getSequenceId() != null) {
-                    ctx.channel().newPromise(), serverRequest.getSequenceId());
+                HttpPipelinedResponse httpPipelinedResponse = new HttpPipelinedResponse(fullHttpResponse,
-            if (ctx.channel().isWritable()) {
+                        ctx.channel().newPromise(), serverRequest.getSequenceId());
-                logger.log(Level.FINEST, fullHttpResponse::toString);
                 ctx.channel().writeAndFlush(httpPipelinedResponse);
-                httpResponseStatus = status;
             } else {
-                logger.log(Level.WARNING, "channel not writeable");
-            }
-        } else {
-            if (ctx.channel().isWritable()) {
-                logger.log(Level.FINEST, fullHttpResponse::toString);
                 ctx.channel().writeAndFlush(fullHttpResponse);
-                httpResponseStatus = status;
-            } else {
-                logger.log(Level.WARNING, "channel not writeable");
             }
+            httpResponseStatus = status;
+        } else {
+            logger.log(Level.WARNING, "channel not writeable");
+        }
+    }
+
+    /**
+     * Chunked response from a readable byte channel.
+     *
+     * @param status status
+     * @param contentType content type
+     * @param byteChannel byte channel
+     */
+    @Override
+    public void write(HttpResponseStatus status, String contentType, ReadableByteChannel byteChannel) {
+        CharSequence s = headers.get(HttpHeaderNames.CONTENT_TYPE);
+        if (s == null) {
+            s = contentType != null ? contentType : HttpHeaderValues.APPLICATION_OCTET_STREAM;
+            headers.add(HttpHeaderNames.CONTENT_TYPE, s);
+        }
+        headers.add(HttpHeaderNames.TRANSFER_ENCODING, "chunked");
+        if (!headers.contains(HttpHeaderNames.DATE)) {
+            headers.add(HttpHeaderNames.DATE, DateTimeFormatter.RFC_1123_DATE_TIME.format(ZonedDateTime.now(ZoneOffset.UTC)));
+        }
+        headers.add(HttpHeaderNames.SERVER, ServerName.getServerName());
+        if (ctx.channel().isWritable()) {
+            HttpResponse httpResponse = new DefaultHttpResponse(HttpVersion.HTTP_1_1, status);
+            httpResponse.headers().add(headers);
+            ctx.channel().write(httpResponse);
+            logger.log(Level.FINE, "written response " + httpResponse);
+            ChunkedInput<ByteBuf> input = new ChunkedNioStream(byteChannel);
+            HttpChunkedInput httpChunkedInput = new HttpChunkedInput(input);
+            ctx.channel().writeAndFlush(httpChunkedInput);
+            ChannelFuture channelFuture = ctx.channel().writeAndFlush(EMPTY_LAST_CONTENT);
+            if ("close".equalsIgnoreCase(serverRequest.getRequest().headers().get(HttpHeaderNames.CONNECTION)) &&
+                    !headers.contains(HttpHeaderNames.CONNECTION)) {
+                channelFuture.addListener(ChannelFutureListener.CLOSE);
+            }
+            httpResponseStatus = status;
+        } else {
+            logger.log(Level.WARNING, "channel not writeable");
         }
     }
 }

netty-http-server/src/main/java/org/xbib/netty/http/server/transport/HttpServerTransport.java

@@ -6,6 +6,7 @@ import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.netty.handler.codec.http2.Http2Settings;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
@@ -30,16 +31,15 @@ public class HttpServerTransport extends BaseServerTransport {
             namedServer = server.getDefaultNamedServer();
         }
         HttpServerRequest serverRequest = new HttpServerRequest();
-        serverRequest.setNamedServer(namedServer);
         serverRequest.setChannelHandlerContext(ctx);
         serverRequest.setRequest(fullHttpRequest);
         serverRequest.setSequenceId(sequenceId);
         serverRequest.setRequestId(requestId);
         HttpServerResponse serverResponse = new HttpServerResponse(serverRequest);
-        if (acceptRequest(serverRequest, serverResponse)) {
+        if (acceptRequest(namedServer, serverRequest, serverResponse)) {
-            handle(serverRequest, serverResponse);
+            handle(namedServer, serverRequest, serverResponse);
         } else {
-            serverResponse.write(HttpResponseStatus.NOT_ACCEPTABLE);
+            ServerResponse.write(serverResponse, HttpResponseStatus.NOT_ACCEPTABLE);
         }
     }
 

netty-http-server/src/main/java/org/xbib/netty/http/server/util/HtmlUtils.java

@@ -0,0 +1,48 @@
+package org.xbib.netty.http.server.util;
+
+public class HtmlUtils {
+
+    /**
+     * Returns an HTML-escaped version of the given string for safe display
+     * within a web page. The characters '&', '>' and '<' must always
+     * be escaped, and single and double quotes must be escaped within
+     * attribute values; this method escapes them always. This method can
+     * be used for generating both HTML and XHTML valid content.
+     *
+     * @param s the string to escape
+     * @return the escaped string
+     * @see <a href="http://www.w3.org/International/questions/qa-escapes">The W3C FAQ</a>
+     */
+    public static String escapeHTML(String s) {
+        int len = s.length();
+        StringBuilder es = new StringBuilder(len + 30);
+        int start = 0;
+        for (int i = 0; i < len; i++) {
+            String ref = null;
+            switch (s.charAt(i)) {
+                case '&':
+                    ref = "&amp;";
+                    break;
+                case '>':
+                    ref = "&gt;";
+                    break;
+                case '<':
+                    ref = "&lt;";
+                    break;
+                case '"':
+                    ref = "&quot;";
+                    break;
+                case '\'':
+                    ref = "&#39;";
+                    break;
+                default:
+                    break;
+            }
+            if (ref != null) {
+                es.append(s, start, i).append(ref);
+                start = i + 1;
+            }
+        }
+        return start == 0 ? s : es.append(s.substring(start)).toString();
+    }
+}

netty-http-server/src/test/java/org/xbib/netty/http/server/test/ClassloaderServiceTest.java

@@ -9,7 +9,7 @@ import org.xbib.netty.http.client.Request;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
 import org.xbib.netty.http.server.endpoint.NamedServer;
-import org.xbib.netty.http.server.endpoint.service.ClasspathService;
+import org.xbib.netty.http.server.endpoint.service.ClassLoaderService;
 
 import java.nio.charset.StandardCharsets;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -24,17 +24,18 @@ class ClassloaderServiceTest {
     private static final Logger logger = Logger.getLogger(ClassloaderServiceTest.class.getName());
 
     @Test
-    void testClassloader() throws Exception {
+    void testSimpleClassloader() throws Exception {
         HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
         NamedServer namedServer = NamedServer.builder(httpAddress)
-                .singleEndpoint("/classloader", "/**", new ClasspathService(ClassloaderServiceTest.class, "/cl"))
+                .singleEndpoint("/classloader", "/**",
+                        new ClassLoaderService(ClassloaderServiceTest.class, "/cl"))
                 .build();
         Server server = Server.builder(namedServer)
                 .build();
         server.logDiagnostics(Level.INFO);
         Client client = Client.builder()
                 .build();
-        int max = 100;
+        int max = 1;
         final AtomicInteger count = new AtomicInteger(0);
         try {
             server.accept();

netty-http-server/src/test/java/org/xbib/netty/http/server/test/CleartextHttp2Test.java

@@ -9,6 +9,7 @@ import org.xbib.netty.http.client.listener.ResponseListener;
 import org.xbib.netty.http.client.transport.Transport;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
@@ -116,11 +117,11 @@ class CleartextHttp2Test {
     @Test
     void testMultithreadPooledClearTextHttp2() throws Exception {
         int threads = 2;
-        int loop = 4 * 1024;
+        int loop = 2 * 1024;
         HttpAddress httpAddress = HttpAddress.http2("localhost", 8008);
         NamedServer namedServer = NamedServer.builder(httpAddress)
                 .singleEndpoint("/", (request, response) ->
-                        response.write(HttpResponseStatus.OK, "text/plain",
+                        ServerResponse.write(response, HttpResponseStatus.OK, "text/plain",
                                 request.getRequest().content().toString(StandardCharsets.UTF_8)))
                 .build();
         Server server = Server.builder(namedServer).build();
@@ -184,7 +185,7 @@ class CleartextHttp2Test {
         AtomicInteger counter1 = new AtomicInteger();
         NamedServer namedServer1 = NamedServer.builder(httpAddress1)
                 .singleEndpoint("/", (request, response) -> {
-                        response.write(HttpResponseStatus.OK, "text/plain",
+                        ServerResponse.write(response, HttpResponseStatus.OK, "text/plain",
                                 request.getRequest().content().toString(StandardCharsets.UTF_8));
                         counter1.incrementAndGet();
                 })
@@ -195,7 +196,7 @@ class CleartextHttp2Test {
         AtomicInteger counter2 = new AtomicInteger();
         NamedServer namedServer2 = NamedServer.builder(httpAddress2)
                 .singleEndpoint("/", (request, response) -> {
-                    response.write(HttpResponseStatus.OK, "text/plain",
+                    ServerResponse.write(response, HttpResponseStatus.OK, "text/plain",
                             request.getRequest().content().toString(StandardCharsets.UTF_8));
                     counter2.incrementAndGet();
                 })

netty-http-server/src/test/java/org/xbib/netty/http/server/test/DoubleServerTest.java

@@ -0,0 +1,37 @@
+package org.xbib.netty.http.server.test;
+
+import io.netty.channel.ChannelFuture;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.xbib.netty.http.common.HttpAddress;
+import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
+import org.xbib.netty.http.server.endpoint.NamedServer;
+
+import java.io.IOException;
+import java.net.BindException;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class DoubleServerTest {
+
+    @Test
+    void testDoubleServer() throws IOException {
+        NamedServer namedServer = NamedServer.builder(HttpAddress.http1("localhost", 8008), "*")
+                .singleEndpoint("/", (request, response) -> ServerResponse.write(response, "Hello World"))
+                .build();
+        Server server1 = Server.builder(namedServer).build();
+        Server server2 = Server.builder(namedServer).build();
+        try {
+            Assertions.assertThrows(BindException.class, () ->{
+                ChannelFuture channelFuture1 = server1.accept();
+                assertNotNull(channelFuture1);
+                ChannelFuture channelFuture2 = server2.accept();
+                // should crash with BindException
+            });
+        } finally {
+            server1.shutdownGracefully();
+            server2.shutdownGracefully();
+        }
+    }
+}

netty-http-server/src/test/java/org/xbib/netty/http/server/test/EndpointTest.java

@@ -8,10 +8,11 @@ import org.xbib.netty.http.client.Client;
 import org.xbib.netty.http.client.Request;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.Endpoint;
 import org.xbib.netty.http.server.endpoint.EndpointResolver;
 import org.xbib.netty.http.server.endpoint.NamedServer;
-import org.xbib.netty.http.server.endpoint.service.NioService;
+import org.xbib.netty.http.server.endpoint.service.MappedFileService;
 import org.xbib.netty.http.server.endpoint.service.Service;
 
 import java.io.IOException;
@@ -33,16 +34,97 @@ class EndpointTest {
     private static final Logger logger = Logger.getLogger(EndpointTest.class.getName());
 
     @Test
-    void testEndpoints() throws Exception {
+    void testEmptyPrefixEndpoint() throws Exception {
         Path vartmp = Paths.get("/var/tmp/");
-        Service service = new NioService(vartmp);
+        Service service = new MappedFileService(vartmp);
         HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
         EndpointResolver endpointResolver = EndpointResolver.builder()
-                .addEndpoint(Endpoint.builder().setPrefix("/static").setPath("/**").build())
+                .addEndpoint(Endpoint.builder().setPath("/**").build())
-                .addEndpoint(Endpoint.builder().setPrefix("/static1").setPath("/**").build())
-                .addEndpoint(Endpoint.builder().setPrefix("/static2").setPath("/**").build())
                 .setDispatcher((endpoint, req, resp) -> {
-                    logger.log(Level.FINE, "endpoint=" + endpoint + " req=" + req);
+                    logger.log(Level.FINE, "dispatching endpoint=" + endpoint + " req=" + req);
+                    service.handle(req, resp);
+                })
+                .build();
+        NamedServer namedServer = NamedServer.builder(httpAddress)
+                .addEndpointResolver(endpointResolver)
+                .build();
+        Server server = Server.builder(namedServer)
+                .build();
+        Client client = Client.builder()
+                .build();
+        final AtomicBoolean success = new AtomicBoolean(false);
+        try {
+            Files.write(vartmp.resolve("test.txt"), "Hello Jörg".getBytes(StandardCharsets.UTF_8));
+            server.accept();
+            Request request = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base().resolve("/test.txt"))
+                    .build()
+                    .setResponseListener(r -> {
+                        assertEquals("Hello Jörg", r.content().toString(StandardCharsets.UTF_8));
+                        success.set(true);
+                    });
+            client.execute(request).get();
+        } finally {
+            server.shutdownGracefully();
+            client.shutdownGracefully();
+            Files.delete(vartmp.resolve("test.txt"));
+            logger.log(Level.INFO, "server and client shut down");
+        }
+        assertTrue(success.get());
+    }
+
+    @Test
+    void testPlainPrefixEndpoint() throws Exception {
+        Path vartmp = Paths.get("/var/tmp/");
+        Service service = new MappedFileService(vartmp);
+        HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
+        EndpointResolver endpointResolver = EndpointResolver.builder()
+                .addEndpoint(Endpoint.builder().setPrefix("/").setPath("/**").build())
+                .setDispatcher((endpoint, req, resp) -> {
+                    logger.log(Level.FINE, "dispatching endpoint=" + endpoint + " req=" + req);
+                    service.handle(req, resp);
+                })
+                .build();
+        NamedServer namedServer = NamedServer.builder(httpAddress)
+                .addEndpointResolver(endpointResolver)
+                .build();
+        Server server = Server.builder(namedServer)
+                .build();
+        Client client = Client.builder()
+                .build();
+        final AtomicBoolean success = new AtomicBoolean(false);
+        try {
+            Files.write(vartmp.resolve("test.txt"), "Hello Jörg".getBytes(StandardCharsets.UTF_8));
+            server.accept();
+            Request request = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base().resolve("/test.txt"))
+                    .build()
+                    .setResponseListener(r -> {
+                        assertEquals("Hello Jörg", r.content().toString(StandardCharsets.UTF_8));
+                        success.set(true);
+                    });
+            client.execute(request).get();
+        } finally {
+            server.shutdownGracefully();
+            client.shutdownGracefully();
+            Files.delete(vartmp.resolve("test.txt"));
+            logger.log(Level.INFO, "server and client shut down");
+        }
+        assertTrue(success.get());
+    }
+
+
+    @Test
+    void testSimplePathEndpoints() throws Exception {
+        Path vartmp = Paths.get("/var/tmp/");
+        Service service = new MappedFileService(vartmp);
+        HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
+        EndpointResolver endpointResolver = EndpointResolver.builder()
+                .addEndpoint(Endpoint.builder().setPrefix("/static").setPath("/**").build())
+                .addEndpoint(Endpoint.builder().setPrefix("/static1").setPath("/**").build())
+                .addEndpoint(Endpoint.builder().setPrefix("/static2").setPath("/**").build())
+                .setDispatcher((endpoint, req, resp) -> {
+                    logger.log(Level.FINE, "dispatching endpoint=" + endpoint + " req=" + req);
                     service.handle(req, resp);
                 })
                 .build();
@@ -51,7 +133,6 @@ class EndpointTest {
                 .build();
         Server server = Server.builder(namedServer)
                 .build();
-        server.logDiagnostics(Level.INFO);
         Client client = Client.builder()
                 .build();
         final AtomicBoolean success = new AtomicBoolean(false);
@@ -99,27 +180,105 @@ class EndpointTest {
         assertTrue(success2.get());
     }
 
+    @Test
+    void testQueryAndFragmentEndpoints() throws Exception {
+        Path vartmp = Paths.get("/var/tmp/");
+        Service service = new MappedFileService(vartmp);
+        HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
+        EndpointResolver endpointResolver = EndpointResolver.builder()
+                .addEndpoint(Endpoint.builder().setPrefix("/static").setPath("/**").build())
+                .addEndpoint(Endpoint.builder().setPrefix("/static1").setPath("/**").build())
+                .addEndpoint(Endpoint.builder().setPrefix("/static2").setPath("/**").build())
+                .setDispatcher((endpoint, req, resp) -> {
+                    logger.log(Level.FINE, "dispatching endpoint=" + endpoint + " req=" + req +
+                            " fragment=" + req.getURL().getFragment());
+                    service.handle(req, resp);
+                })
+                .build();
+        NamedServer namedServer = NamedServer.builder(httpAddress)
+                .addEndpointResolver(endpointResolver)
+                .build();
+        Server server = Server.builder(namedServer)
+                .build();
+        Client client = Client.builder()
+                .build();
+        final AtomicBoolean success = new AtomicBoolean(false);
+        final AtomicBoolean success1 = new AtomicBoolean(false);
+        final AtomicBoolean success2 = new AtomicBoolean(false);
+        try {
+            Files.write(vartmp.resolve("test.txt"), "Hello Jörg".getBytes(StandardCharsets.UTF_8));
+            Files.write(vartmp.resolve("test1.txt"), "Hello Jörg 1".getBytes(StandardCharsets.UTF_8));
+            Files.write(vartmp.resolve("test2.txt"), "Hello Jörg 2".getBytes(StandardCharsets.UTF_8));
+            server.accept();
+            Request request = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base().resolve("/static/test.txt"))
+                    .addParameter("a", "b")
+                    .build()
+                    .setResponseListener(r -> {
+                        if (r.status().equals(HttpResponseStatus.OK)) {
+                            assertEquals("Hello Jörg", r.content().toString(StandardCharsets.UTF_8));
+                            success.set(true);
+                        } else {
+                            logger.log(Level.WARNING, r.toString());
+                        }
+                    });
+            client.execute(request).get();
+            Request request1 = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base()
+                            .resolve("/static1/test1.txt").newBuilder().fragment("frag").build())
+                    .build()
+                    .setResponseListener(r -> {
+                        if (r.status().equals(HttpResponseStatus.OK)) {
+                            assertEquals("Hello Jörg 1", r.content().toString(StandardCharsets.UTF_8));
+                            success1.set(true);
+                        } else {
+                            logger.log(Level.WARNING, r.toString());
+                        }
+                    });
+            client.execute(request1).get();
+            Request request2 = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base().resolve("/static2/test2.txt"))
+                    .content("{\"a\":\"b\"}","application/json")
+                    .build()
+                    .setResponseListener(r -> {
+                        if (r.status().equals(HttpResponseStatus.OK)) {
+                            assertEquals("Hello Jörg 2", r.content().toString(StandardCharsets.UTF_8));
+                            success2.set(true);
+                        } else {
+                            logger.log(Level.WARNING, r.toString());
+                        }
+                    });
+            client.execute(request2).get();
+        } finally {
+            server.shutdownGracefully();
+            client.shutdownGracefully();
+            Files.delete(vartmp.resolve("test.txt"));
+            Files.delete(vartmp.resolve("test1.txt"));
+            Files.delete(vartmp.resolve("test2.txt"));
+            logger.log(Level.INFO, "server and client shut down");
+        }
+        assertTrue(success.get());
+        assertTrue(success1.get());
+        assertTrue(success2.get());
+    }
+
     @Test
     void testMassiveEndpoints() throws IOException {
-        int max = 1000;
+        int max = 2; // more than 1024
         HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
         EndpointResolver.Builder endpointResolverBuilder = EndpointResolver.builder()
                 .setPrefix("/static");
         for (int i = 0; i < max; i++) {
             endpointResolverBuilder.addEndpoint(Endpoint.builder()
-                    .setPath(i + "/**")
+                    .setPath("/" + i + "/**")
-                    .addFilter((req, resp) -> resp.write(HttpResponseStatus.OK))
+                    .addFilter((req, resp) -> ServerResponse.write(resp, HttpResponseStatus.OK))
                     .build());
         }
-        endpointResolverBuilder.setDispatcher((endpoint, req, resp) -> {
-            logger.log(Level.FINEST, "endpoint=" + endpoint + " req=" + req + " resp=" + resp);
-        });
         NamedServer namedServer = NamedServer.builder(httpAddress)
                 .addEndpointResolver(endpointResolverBuilder.build())
                 .build();
         Server server = Server.builder(namedServer)
                 .build();
-        server.logDiagnostics(Level.INFO);
         Client client = Client.builder()
                 .build();
         final AtomicInteger count = new AtomicInteger(0);
@@ -132,7 +291,6 @@ class EndpointTest {
                         .setResponseListener(r -> {
                             if (r.status().equals(HttpResponseStatus.OK)) {
                                 count.incrementAndGet();
-                                logger.log(Level.INFO, r.status().reasonPhrase());
                             } else {
                                 logger.log(Level.WARNING, r.status().reasonPhrase());
                             }

netty-http-server/src/test/java/org/xbib/netty/http/server/test/NettyHttpExtension.java

@@ -24,6 +24,7 @@ public class NettyHttpExtension implements BeforeAllCallback {
         //System.setProperty("io.netty.recycler.maxCapacity", Integer.toString(0));
         //System.setProperty("io.netty.leakDetection.level", "paranoid");
 
+        Level level = Level.INFO;
         System.setProperty("java.util.logging.SimpleFormatter.format",
                 "%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL %4$-7s [%3$s] %5$s %6$s%n");
         LogManager.getLogManager().reset();
@@ -31,10 +32,10 @@ public class NettyHttpExtension implements BeforeAllCallback {
         Handler handler = new ConsoleHandler();
         handler.setFormatter(new SimpleFormatter());
         rootLogger.addHandler(handler);
-        rootLogger.setLevel(Level.FINE);
+        rootLogger.setLevel(level);
         for (Handler h : rootLogger.getHandlers()) {
             handler.setFormatter(new SimpleFormatter());
-            h.setLevel(Level.FINE);
+            h.setLevel(level);
         }
     }
 }

netty-http-server/src/test/java/org/xbib/netty/http/server/test/PostTest.java

@@ -9,6 +9,7 @@ import org.xbib.netty.http.client.Request;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.common.HttpParameters;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -29,7 +30,7 @@ class PostTest {
                 .singleEndpoint("/post", "/**", (req, resp) -> {
                     HttpParameters parameters = req.getParameters();
                     logger.log(Level.INFO, "got post " + parameters.toString());
-                    resp.write(HttpResponseStatus.OK);
+                    ServerResponse.write(resp, HttpResponseStatus.OK);
                 }, "POST")
                 .build();
         Server server = Server.builder(namedServer)
@@ -67,7 +68,7 @@ class PostTest {
                 .singleEndpoint("/post", "/**", (req, resp) -> {
                     HttpParameters parameters = req.getParameters();
                     logger.log(Level.INFO, "got post " + parameters.toString());
-                    resp.write(HttpResponseStatus.OK);
+                    ServerResponse.write(resp, HttpResponseStatus.OK);
                 }, "POST")
                 .build();
         Server server = Server.builder(namedServer)

netty-http-server/src/test/java/org/xbib/netty/http/server/test/SecureStaticFileServiceTest.java

@@ -8,7 +8,7 @@ import org.xbib.netty.http.client.Request;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
 import org.xbib.netty.http.server.endpoint.NamedServer;
-import org.xbib.netty.http.server.endpoint.service.NioService;
+import org.xbib.netty.http.server.endpoint.service.MappedFileService;
 
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
@@ -33,7 +33,7 @@ class SecureStaticFileServiceTest {
         Server server = Server.builder(NamedServer.builder(httpAddress, "*")
                   .setJdkSslProvider()
                   .setSelfCert()
-                  .singleEndpoint("/static", "/**", new NioService(vartmp))
+                  .singleEndpoint("/static", "/**", new MappedFileService(vartmp))
                 .build())
                 .setChildThreadCount(8)
                 .build();
@@ -73,7 +73,7 @@ class SecureStaticFileServiceTest {
         Server server = Server.builder(NamedServer.builder(httpAddress, "*")
                   .setOpenSSLSslProvider()
                   .setSelfCert()
-                  .singleEndpoint("/static", "/**", new NioService(vartmp))
+                  .singleEndpoint("/static", "/**", new MappedFileService(vartmp))
                   .build())
                 .build();
         Client client = Client.builder()

netty-http-server/src/test/java/org/xbib/netty/http/server/test/ServerTest.java

@@ -4,6 +4,7 @@ import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.NamedServer;
 
 @Disabled
@@ -12,7 +13,7 @@ class ServerTest {
     @Test
     void testServer() throws Exception {
         NamedServer namedServer = NamedServer.builder(HttpAddress.http1("localhost", 8008), "*")
-                .singleEndpoint("/", (request, response) -> response.write("Hello World"))
+                .singleEndpoint("/", (request, response) -> ServerResponse.write(response, "Hello World"))
                 .build();
         Server server = Server.builder(namedServer).build();
         try {

netty-http-server/src/test/java/org/xbib/netty/http/server/test/StaticFileServiceTest.java

@@ -8,7 +8,8 @@ import org.xbib.netty.http.client.Request;
 import org.xbib.netty.http.common.HttpAddress;
 import org.xbib.netty.http.server.Server;
 import org.xbib.netty.http.server.endpoint.NamedServer;
-import org.xbib.netty.http.server.endpoint.service.NioService;
+import org.xbib.netty.http.server.endpoint.service.ChunkedFileService;
+import org.xbib.netty.http.server.endpoint.service.MappedFileService;
 
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
@@ -31,11 +32,44 @@ class StaticFileServiceTest {
         Path vartmp = Paths.get("/var/tmp/");
         HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
         NamedServer namedServer = NamedServer.builder(httpAddress)
-                .singleEndpoint("/static", "/**", new NioService(vartmp))
+                .singleEndpoint("/static", "/**", new MappedFileService(vartmp))
+                .build();
+        Server server = Server.builder(namedServer)
+                .build();
+        Client client = Client.builder()
+                .build();
+        final AtomicBoolean success = new AtomicBoolean(false);
+        try {
+            Files.write(vartmp.resolve("test.txt"), "Hello Jörg".getBytes(StandardCharsets.UTF_8));
+            server.accept();
+            Request request = Request.get().setVersion(HttpVersion.HTTP_1_1)
+                    .url(server.getServerConfig().getAddress().base().resolve("/static/test.txt"))
+                    .build()
+                    .setResponseListener(r -> {
+                        assertEquals("Hello Jörg", r.content().toString(StandardCharsets.UTF_8));
+                        success.set(true);
+                    });
+            logger.log(Level.INFO, request.toString());
+            client.execute(request).get();
+            logger.log(Level.INFO, "request complete");
+        } finally {
+            server.shutdownGracefully();
+            client.shutdownGracefully();
+            Files.delete(vartmp.resolve("test.txt"));
+            logger.log(Level.INFO, "server and client shut down");
+        }
+        assertTrue(success.get());
+    }
+
+    @Test
+    void testChunkedFileServerHttp1() throws Exception {
+        Path vartmp = Paths.get("/var/tmp/");
+        HttpAddress httpAddress = HttpAddress.http1("localhost", 8008);
+        NamedServer namedServer = NamedServer.builder(httpAddress)
+                .singleEndpoint("/static", "/**", new ChunkedFileService(vartmp))
                 .build();
         Server server = Server.builder(namedServer)
                 .build();
-        server.logDiagnostics(Level.INFO);
         Client client = Client.builder()
                 .build();
         final AtomicBoolean success = new AtomicBoolean(false);
@@ -66,11 +100,44 @@ class StaticFileServiceTest {
         Path vartmp = Paths.get("/var/tmp/");
         HttpAddress httpAddress = HttpAddress.http2("localhost", 8008);
         NamedServer namedServer = NamedServer.builder(httpAddress)
-                .singleEndpoint("/static", "/**", new NioService(vartmp))
+                .singleEndpoint("/static", "/**", new MappedFileService(vartmp))
+                .build();
+        Server server = Server.builder(namedServer)
+                .build();
+        Client client = Client.builder()
+                .build();
+        final AtomicBoolean success = new AtomicBoolean(false);
+        try {
+            Files.write(vartmp.resolve("test.txt"), "Hello Jörg".getBytes(StandardCharsets.UTF_8));
+            server.accept();
+            Request request = Request.get().setVersion(HttpVersion.valueOf("HTTP/2.0"))
+                    .url(server.getServerConfig().getAddress().base().resolve("/static/test.txt"))
+                    .build()
+                    .setResponseListener(r -> {
+                        assertEquals("Hello Jörg", r.content().toString(StandardCharsets.UTF_8));
+                        success.set(true);
+                    });
+            logger.log(Level.INFO, request.toString());
+            client.execute(request).get();
+            logger.log(Level.INFO, "request complete");
+        } finally {
+            server.shutdownGracefully();
+            client.shutdownGracefully();
+            Files.delete(vartmp.resolve("test.txt"));
+            logger.log(Level.INFO, "server and client shut down");
+        }
+        assertTrue(success.get());
+    }
+
+    @Test
+    void testChunkedFileServerHttp2() throws Exception {
+        Path vartmp = Paths.get("/var/tmp/");
+        HttpAddress httpAddress = HttpAddress.http2("localhost", 8008);
+        NamedServer namedServer = NamedServer.builder(httpAddress)
+                .singleEndpoint("/static", "/**", new ChunkedFileService(vartmp))
                 .build();
         Server server = Server.builder(namedServer)
                 .build();
-        server.logDiagnostics(Level.INFO);
         Client client = Client.builder()
                 .build();
         final AtomicBoolean success = new AtomicBoolean(false);

netty-http-server/src/test/java/org/xbib/netty/http/server/test/ThreadLeakTest.java

@@ -6,6 +6,7 @@ import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.xbib.netty.http.server.Server;
+import org.xbib.netty.http.server.ServerResponse;
 import org.xbib.netty.http.server.endpoint.NamedServer;
 
 import java.io.IOException;
@@ -22,8 +23,7 @@ class ThreadLeakTest {
     @Test
     void testForLeaks() throws IOException {
         NamedServer namedServer = NamedServer.builder()
-                .singleEndpoint("/", (request, response) ->
+                .singleEndpoint("/", (request, response) -> ServerResponse.write(response, "Hello World"))
-                        response.write("Hello World"))
                 .build();
         Server server = Server.builder(namedServer)
                 .setByteBufAllocator(UnpooledByteBufAllocator.DEFAULT)

netty-http-server/src/test/java/org/xbib/netty/http/server/test/reactive/BatchedProducer.java

@@ -0,0 +1,57 @@
+package org.xbib.netty.http.server.test.reactive;
+
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelOutboundHandlerAdapter;
+import io.netty.channel.ChannelPromise;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * A batched producer.
+ *
+ * Responds to read requests with batches of elements according to batch size. When eofOn is reached, it closes the
+ * channel.
+ */
+public class BatchedProducer extends ChannelOutboundHandlerAdapter {
+
+    protected final long eofOn;
+    protected final int batchSize;
+    protected final AtomicLong sequence;
+
+    public BatchedProducer(long eofOn, int batchSize, long sequence) {
+        this.eofOn = eofOn;
+        this.batchSize = batchSize;
+        this.sequence = new AtomicLong(sequence);
+    }
+
+    private boolean cancelled = false;
+
+
+    @Override
+    public void read(final ChannelHandlerContext ctx) throws Exception {
+        if (cancelled) {
+            throw new IllegalStateException("Received demand after being cancelled");
+        }
+        ctx.pipeline().channel().eventLoop().parent().execute(new Runnable() {
+            @Override
+            public void run() {
+                for (int i = 0; i < batchSize && sequence.get() != eofOn; i++) {
+                    ctx.fireChannelRead(sequence.getAndIncrement());
+                }
+                if (eofOn == sequence.get()) {
+                    ctx.fireChannelInactive();
+                } else {
+                    ctx.fireChannelReadComplete();
+                }
+            }
+        });
+    }
+
+    @Override
+    public void disconnect(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
+        if (cancelled) {
+            throw new IllegalStateException("Cancelled twice");
+        }
+        cancelled = true;
+    }
+}

netty-http-server/src/test/java/org/xbib/netty/http/server/test/reactive/ChannelPublisherTest.java

@@ -0,0 +1,158 @@
+package org.xbib.netty.http.server.test.reactive;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoop;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.util.concurrent.DefaultPromise;
+import io.netty.util.concurrent.Promise;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.reactivestreams.Publisher;
+import org.reactivestreams.Subscriber;
+import org.reactivestreams.Subscription;
+import org.xbib.netty.http.server.reactive.HandlerPublisher;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetSocketAddress;
+import java.net.Socket;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+class ChannelPublisherTest {
+
+    private EventLoopGroup group;
+    private Channel channel;
+    private Publisher<Channel> publisher;
+    private SubscriberProbe<Channel> subscriber;
+
+    @BeforeEach
+    void start() throws Exception {
+        group = new NioEventLoopGroup();
+        EventLoop eventLoop = group.next();
+        HandlerPublisher<Channel> handlerPublisher = new HandlerPublisher<>(eventLoop, Channel.class);
+        Bootstrap bootstrap = new Bootstrap();
+        bootstrap
+                .channel(NioServerSocketChannel.class)
+                .group(eventLoop)
+                .option(ChannelOption.AUTO_READ, false)
+                .handler(handlerPublisher)
+                .localAddress("127.0.0.1", 0);
+        channel = bootstrap.bind().await().channel();
+        this.publisher = handlerPublisher;
+
+        subscriber = new SubscriberProbe<>();
+    }
+
+    @AfterEach
+    void stop() throws Exception {
+        channel.unsafe().closeForcibly();
+        group.shutdownGracefully();
+    }
+
+    @Test
+    void test() throws Exception {
+        publisher.subscribe(subscriber);
+        Subscription sub = subscriber.takeSubscription();
+
+        // Try one cycle
+        sub.request(1);
+        Socket socket1 = connect();
+        receiveConnection();
+        readWriteData(socket1, 1);
+
+        // Check back pressure
+        Socket socket2 = connect();
+        subscriber.expectNoElements();
+
+        // Now request the next connection
+        sub.request(1);
+        receiveConnection();
+        readWriteData(socket2, 2);
+
+        // Close the channel
+        channel.close();
+        subscriber.expectNoElements();
+        subscriber.expectComplete();
+    }
+
+    private Socket connect() throws Exception {
+        InetSocketAddress address = (InetSocketAddress) channel.localAddress();
+        return new Socket(address.getAddress(), address.getPort());
+    }
+
+    private void readWriteData(Socket socket, int data) throws Exception {
+        OutputStream os = socket.getOutputStream();
+        os.write(data);
+        os.flush();
+        InputStream is = socket.getInputStream();
+        int received = is.read();
+        socket.close();
+        assertEquals(received, data);
+    }
+
+    private void receiveConnection() throws Exception {
+        Channel channel = subscriber.take();
+        channel.pipeline().addLast(new ChannelInboundHandlerAdapter() {
+            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                ctx.writeAndFlush(msg);
+            }
+        });
+        group.register(channel);
+    }
+
+    private class SubscriberProbe<T> implements Subscriber<T> {
+        final BlockingQueue<Subscription> subscriptions = new LinkedBlockingQueue<>();
+        final BlockingQueue<T> elements = new LinkedBlockingQueue<>();
+        final Promise<Void> promise = new DefaultPromise<>(group.next());
+
+        public void onSubscribe(Subscription s) {
+            subscriptions.add(s);
+        }
+
+        public void onNext(T t) {
+            elements.add(t);
+        }
+
+        public void onError(Throwable t) {
+            promise.setFailure(t);
+        }
+
+        public void onComplete() {
+            promise.setSuccess(null);
+        }
+
+        Subscription takeSubscription() throws Exception {
+            Subscription sub = subscriptions.poll(100, TimeUnit.MILLISECONDS);
+            assertNotNull(sub);
+            return sub;
+        }
+
+        T take() throws Exception {
+            T t = elements.poll(1000, TimeUnit.MILLISECONDS);
+            assertNotNull(t);
+            return t;
+        }
+
+        void expectNoElements() throws Exception {
+            T t = elements.poll(100, TimeUnit.MILLISECONDS);
+            assertNull(t);
+        }
+
+        void expectComplete() throws Exception {
+            promise.get(100, TimeUnit.MILLISECONDS);
+        }
+    }
+}

netty-http-server/src/test/java/org/xbib/netty/http/server/test/reactive/ClosedLoopChannel.java

@@ -0,0 +1,108 @@
+package org.xbib.netty.http.server.test.reactive;
+
+import io.netty.channel.AbstractChannel;
+import io.netty.channel.ChannelConfig;
+import io.netty.channel.ChannelMetadata;
+import io.netty.channel.ChannelOutboundBuffer;
+import io.netty.channel.ChannelPromise;
+import io.netty.channel.DefaultChannelConfig;
+import io.netty.channel.EventLoop;
+
+import java.net.SocketAddress;
+
+/**
+ * A closed loop channel that sends no events and receives no events, for testing purposes.
+ *
+ * Any outgoing events that reach the channel will throw an exception. All events should be caught
+ * be inserting a handler that catches them and responds accordingly.
+ */
+public class ClosedLoopChannel extends AbstractChannel {
+
+    private final ChannelConfig config = new DefaultChannelConfig(this);
+    private static final ChannelMetadata metadata = new ChannelMetadata(false);
+
+    private volatile boolean open = true;
+    private volatile boolean active = true;
+
+    public ClosedLoopChannel() {
+        super(null);
+    }
+
+    public void setOpen(boolean open) {
+        this.open = open;
+    }
+
+    public void setActive(boolean active) {
+        this.active = active;
+    }
+
+    @Override
+    protected AbstractUnsafe newUnsafe() {
+        return new AbstractUnsafe() {
+            @Override
+            public void connect(SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) {
+                throw new UnsupportedOperationException();
+            }
+        };
+    }
+
+    @Override
+    protected boolean isCompatible(EventLoop loop) {
+        return true;
+    }
+
+    @Override
+    protected SocketAddress localAddress0() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected SocketAddress remoteAddress0() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void doBind(SocketAddress localAddress) throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void doDisconnect() throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void doClose() throws Exception {
+        this.open = false;
+    }
+
+    @Override
+    protected void doBeginRead() throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    protected void doWrite(ChannelOutboundBuffer in) throws Exception {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public ChannelConfig config() {
+        return config;
+    }
+
+    @Override
+    public boolean isOpen() {
+        return open;
+    }
+
+    @Override
+    public boolean isActive() {
+        return active;
+    }
+
+    @Override
+    public ChannelMetadata metadata() {
+        return metadata;
+    }
+}