Websocket error

[aravindsrivats]

I'm trying to set the transport as websocket and I get the following error.

io.socket.engineio.client.EngineIOException: websocket error
    at io.socket.engineio.client.Transport.onError(Transport.java:66)
    at io.socket.engineio.client.transports.WebSocket.access$500(WebSocket.java:28)
    at io.socket.engineio.client.transports.WebSocket$1$5.run(WebSocket.java:138)
    at io.socket.thread.EventThread$2.run(EventThread.java:75)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: unexpected end of stream on Connection{localhost:8001, proxy=DIRECT hostAddress=0:0:0:0:0:0:0:1 cipherSuite=none protocol=http/1.1} (recycle count=0)
    at com.squareup.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:211)
    at com.squareup.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:80)
    at com.squareup.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:906)
    at com.squareup.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:746)
    at com.squareup.okhttp.Call.getResponse(Call.java:268)
    at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:224)
    at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:195)
    at com.squareup.okhttp.Call.access$100(Call.java:34)
    at com.squareup.okhttp.Call$AsyncCall.execute(Call.java:162)
    at com.squareup.okhttp.internal.NamedRunnable.run(NamedRunnable.java:33)
    ... 3 more
Caused by: java.io.EOFException: \n not found: size=0 content=...
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:201)
    at com.squareup.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:191)
    ... 12 more

The error looks to be caused by java.io.EOFException: \n not found: size=0 content=...

My repository: https://github.com/aravindsrivats/socket.io-java/blob/master/src/main/java/ministry/dolores/App.java

[aravindsrivats]

Upgrading to socket.io 1.3.7 fixed the issue.

[ABOBAKAR-IT]

on remote server config the nginx

server

{
server_name backend.me;

   location /{ 
         #  proxy_set_header X-Real-IP $remote_addr; 
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
           proxy_set_header Host $host; 
         #  proxy_set_header X-NginX-Proxy true; 
            proxy_pass http://localhost:4000/; 
                     proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
         #  proxy_redirect http://localhost:5000/ https://$server_name/;       
   } 

}