socket.io 업그레이드가 폴링에서 websocket으로 전송됩니까?

Question

nodejs를 socket.io 및 express 프레임 작업과 함께 사용하고 있습니다. 다음은 내가 명령을 실행할 때 얻을 수있는 로그 출력입니다.

DEBUG=* /bin/www 

로그 출력은 다음과 같습니다.

engine intercepting request for path "/socket.io/" +2m 
    engine handling "GET" http request "/socket.io/?EIO=3&transport=polling&t=1414498393419-0" +0ms 
    engine handshaking client "WECN1dP0tobacKc8AAAB" +1ms 
    engine:socket sending packet "open" ({"sid":"WECN1dP0tobacKc8AAAB","upgrades":["websocket"],"pingInterval":25000,"pingTimeout":60000}) +0ms 
    engine:polling setting request +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:polling writing " �0{"sid":"WECN1dP0tobacKc8AAAB","upgrades":["websocket"],"pingInterval":25000,"pingTimeout":60000}" +1ms 
    engine:socket executing batch send callback +1ms 
    socket.io:server incoming connection with id WECN1dP0tobacKc8AAAB +2.5m 
    socket.io:client connecting to namespace/+1.3m 
    socket.io:namespace adding socket to nsp/+2.5m 
    socket.io:socket socket connected - writing packet +1.3m 
    socket.io:socket joining room WECN1dP0tobacKc8AAAB +0ms 
    socket.io:client writing packet {"type":0,"nsp":"/"} +1ms 
    socket.io-parser encoding packet {"type":0,"nsp":"/"} +2.5m 
    socket.io-parser encoded {"type":0,"nsp":"/"} as 0 +0ms 
    engine:socket sending packet "message" (0) +1ms 
    socket.io:socket joined room WECN1dP0tobacKc8AAAB +5ms 
    engine intercepting request for path "/socket.io/" +140ms 
    engine handling "GET" http request "/socket.io/?EIO=3&transport=polling&t=1414498393557-1&sid=WECN1dP0tobacKc8AAAB" +0ms 
    engine setting new request for existing client +1ms 
    engine:polling setting request +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:polling writing "�40" +0ms 
    engine:socket executing batch send callback +0ms 
    engine upgrading existing transport +39ms 
    engine:socket might upgrade socket transport from "polling" to "websocket" +0ms 
    engine intercepting request for path "/socket.io/" +16ms 
    engine handling "GET" http request "/socket.io/?EIO=3&transport=polling&t=1414498393618-2&sid=WECN1dP0tobacKc8AAAB" +0ms 
    engine setting new request for existing client +0ms 
    engine:polling setting request +0ms 
    engine:ws received "2probe" +2ms 
    engine:ws writing "3probe" +0ms 
    engine:socket writing a noop packet to polling for fast upgrade +100ms 
    engine:polling writing "�6" +0ms 
    engine:ws received "5" +4ms 
    engine:socket got upgrade packet - upgrading +0ms 
    engine:ws received "2" +25s 
    engine:socket packet +0ms 
    engine:socket got ping +0ms 
    engine:socket sending packet "pong" (undefined) +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:ws writing "3" +0ms 
    engine:ws received "2" +25s 
    engine:socket packet +0ms 
    engine:socket got ping +0ms 
    engine:socket sending packet "pong" (undefined) +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:ws writing "3" +0ms 
    engine:ws received "2" +25s 
    engine:socket packet +0ms 
    engine:socket got ping +0ms 
    engine:socket sending packet "pong" (undefined) +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:ws writing "3" +0ms 
    engine:ws received "2" +25s 
    engine:socket packet +0ms 
    engine:socket got ping +0ms 
    engine:socket sending packet "pong" (undefined) +0ms 
    engine:socket flushing buffer to transport +0ms 
    engine:ws writing "3" +1ms 

전송 업그레이드를 확인하는 로그 메시지가 표시되지 않습니다. 또한 탁구 메시지가 계속 발생합니다.

websocket 전송이 설정된다는 것을 의미합니까?

Answer 1

예, polling first and then upgrades to websocket을 사용합니다. 브라우저에서 연결하거나 wireshark를 사용하면 서버에서 "HTTP/1.1 101 Switching Protocols"메시지가 나타납니다. 또한 "engine : ws"로그에서 websocket이 작동 중임을 의미합니다. 여전히 확실하지 않은 경우 전송 유형을 인쇄 할 수도 있습니다 (예 : 분리시). 이것은 서버 측 코드 (socket.io 1.1.0)입니다.

socket.on('disconnect', function() { 
    console.log(socket.id + ' disconnect ('+ socket.client.conn.transport.constructor.name +')'; 
    });