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Check if WebSocketServerProtocolHandshakeHandler is already in the pipeline before adding it. See #587

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norman 2012-09-10 07:18:26 +02:00
parent 6e39192462
commit 6c2053bae5
1 changed files with 7 additions and 3 deletions
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10
codec-http/src/main/java/io/netty/handler/codec/http/websocketx/WebSocketServerProtocolHandler.java
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@ -20,6 +20,7 @@ import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundMessageHandlerAdapter;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.util.AttributeKey;
@ -53,9 +54,12 @@ public class WebSocketServerProtocolHandler extends ChannelInboundMessageHandler
@Override
public void afterAdd(ChannelHandlerContext ctx) {
// Add the WebSocketHandshakeHandler before this one.
ctx.pipeline().addBefore(ctx.name(), WebSocketServerProtocolHandshakeHandler.class.getName(),
new WebSocketServerProtocolHandshakeHandler(websocketPath, subprotocols, allowExtensions));
ChannelPipeline cp = ctx.pipeline();
if (cp.get(WebSocketServerProtocolHandshakeHandler.class) == null) {
// Add the WebSocketHandshakeHandler before this one.
ctx.pipeline().addBefore(ctx.name(), WebSocketServerProtocolHandshakeHandler.class.getName(),
new WebSocketServerProtocolHandshakeHandler(websocketPath, subprotocols, allowExtensions));
}
}
@Override