io.netty.handler.codec.http.websocketx

Class WebSocketServerProtocolHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelStateHandlerAdapter

io.netty.channel.ChannelInboundMessageHandlerAdapter<WebSocketFrame>

io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelHandlerUtil.SingleInboundMessageHandler<WebSocketFrame>, io.netty.channel.ChannelInboundMessageHandler<WebSocketFrame>, io.netty.channel.ChannelStateHandler

public class WebSocketServerProtocolHandler
extends io.netty.channel.ChannelInboundMessageHandlerAdapter<WebSocketFrame>

This handler does all the heavy lifting for you to run a websocket server. It takes care of websocket handshaking as well as processing of control frames (Close, Ping, Pong). Text and Binary data frames are passed to the next handler in the pipeline (implemented by you) for processing. See io.netty.example.http.websocketx.html5.WebSocketServer for usage. The implementation of this handler assumes that you just want to run a websocket server and not process other types HTTP requests (like GET and POST). If you wish to support both HTTP requests and websockets in the one server, refer to the io.netty.example.http.websocketx.server.WebSocketServer example. To know once a handshake was done you can intercept the ChannelStateHandler.userEventTriggered(ChannelHandlerContext, Object) and check if the event was of type WebSocketServerProtocolHandler.ServerHandshakeStateEvent.HANDSHAKE_COMPLETE.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WebSocketServerProtocolHandler.ServerHandshakeStateEvent Events that are fired to notify about handshake status

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields inherited from class io.netty.channel.ChannelInboundMessageHandlerAdapter

ABORT

Constructor Summary

Constructors

Constructor and Description
WebSocketServerProtocolHandler(String websocketPath)
WebSocketServerProtocolHandler(String websocketPath, String subprotocols)
WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions)

Method Summary

Methods

Modifier and Type	Method and Description
void	exceptionCaught(io.netty.channel.ChannelHandlerContext ctx, Throwable cause)
void	handlerAdded(io.netty.channel.ChannelHandlerContext ctx)
void	messageReceived(io.netty.channel.ChannelHandlerContext ctx, WebSocketFrame frame)

Methods inherited from class io.netty.channel.ChannelInboundMessageHandlerAdapter

acceptInboundMessage, beginMessageReceived, endMessageReceived, inboundBufferUpdated, newInboundBuffer

Methods inherited from class io.netty.channel.ChannelStateHandlerAdapter

channelActive, channelInactive, channelReadSuspended, channelRegistered, channelUnregistered, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

handlerRemoved

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.netty.channel.ChannelStateHandler

channelActive, channelInactive, channelReadSuspended, channelRegistered, channelUnregistered, userEventTriggered

Methods inherited from interface io.netty.channel.ChannelHandler

handlerRemoved

Constructor Detail

WebSocketServerProtocolHandler

public WebSocketServerProtocolHandler(String websocketPath)

WebSocketServerProtocolHandler

public WebSocketServerProtocolHandler(String websocketPath,
                              String subprotocols)

WebSocketServerProtocolHandler

public WebSocketServerProtocolHandler(String websocketPath,
                              String subprotocols,
                              boolean allowExtensions)

Method Detail

handlerAdded

public void handlerAdded(io.netty.channel.ChannelHandlerContext ctx)

Specified by:

handlerAdded in interface io.netty.channel.ChannelHandler

Overrides:

handlerAdded in class io.netty.channel.ChannelHandlerAdapter

messageReceived

public void messageReceived(io.netty.channel.ChannelHandlerContext ctx,
                   WebSocketFrame frame)
                     throws Exception

Specified by:

messageReceived in interface io.netty.channel.ChannelHandlerUtil.SingleInboundMessageHandler<WebSocketFrame>

Throws:

Exception

exceptionCaught

public void exceptionCaught(io.netty.channel.ChannelHandlerContext ctx,
                   Throwable cause)
                     throws Exception

Specified by:

exceptionCaught in interface io.netty.channel.ChannelHandler

Throws:

Exception