Issue - Passing Base64 string to web-socket in Play framework using scala

[Karthi]

Hi All,

Framework: Play 2.3

Language: Scala

I have created a web socket communication that accepts a base64 string. The base64 string has been passed as a JSON message.

If I pass the small amount of the input(base64 string), I received it in the server. But If I pass a large amount input(base64 string) in the web socket, I got the below exception.

org.jboss.netty.handler.codec.frame.CorruptedFrameException: Max frame length of 65536 has been exceeded.

 

 at org.jboss.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder.protocolViolation(WebSocket08FrameDecoder.java:381)

 at org.jboss.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder.decode(WebSocket08FrameDecoder.java:242)

 at org.jboss.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder.decode(WebSocket08FrameDecoder.java:71)

 at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500)

 at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)

 at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)

 at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)

 at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)

 at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)

 at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)

 at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)

 at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)

 at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)

 at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)

 at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)

 at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)

 at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)

 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 at java.lang.Thread.run(Thread.java:745)

I have searched in the google regarding this issue. But I didn't get any solution to fix it.

Did anyone face this issue already? 

How do I fix this issue?

Note: 

I got the similar issue in the HTTP post call already. But I fixed the issue by executing the below command. But it is not working for web socket.

SBT_OPTS="-Xms1024m -Xmx3084m -XX:MaxPermSize=1024m -Dhttp.netty.maxInitialLineLength=2621440"

[Evan Lowry]

You can try increasing the websocket buffer size.

https://github.com/playframework/playframework/blob/702e89841fc54f5603a0d981c3488ed9883561fe/framework/src/play-netty-server/src/main/scala/play/core/server/netty/NettyServerFlow.scala#L100

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