Question

我使用nginx从9000到80端口代理我的测试websocket，我的所有测试都没问题，直到客户端在Web代理后面，然后握手过程失败，问题出在哪里？提前感谢您的时间。

我收到这些错误：
客户端：

WebSocket connection to 'ws://myserver/ws/' failed: Error during WebSocket handshake: Unexpected response code: 502 autobahn.min.js:62

服务器：

2014-01-10 19:51:22-0300 [PubSubServer1,19,127.0.0.1] Unhandled Error
    Traceback (most recent call last):
      File "/usr/lib/python2.7/dist-packages/twisted/python/log.py", line 84, in callWithLogger
        return callWithContext({"system": lp}, func, *args, **kw)
      File "/usr/lib/python2.7/dist-packages/twisted/python/log.py", line 69, in callWithContext
        return context.call({ILogContext: newCtx}, func, *args, **kw)
      File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 118, in callWithContext
        return self.currentContext().callWithContext(ctx, func, *args, **kw)
      File "/usr/lib/python2.7/dist-packages/twisted/python/context.py", line 81, in callWithContext
        return func(*args,**kw)
    --- <exception caught here> ---
      File "/usr/lib/python2.7/dist-packages/twisted/internet/posixbase.py", line 586, in _doReadOrWrite
        why = selectable.doRead()
      File "/usr/lib/python2.7/dist-packages/twisted/internet/tcp.py", line 199, in doRead
        rval = self.protocol.dataReceived(data)
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/twisted/websocket.py", line 77, in dataReceived
        self._dataReceived(data)
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/websocket/protocol.py", line 1270, in _dataReceived
        self.consumeData()
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/websocket/protocol.py", line 1303, in consumeData
        self.processHandshake()
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/websocket/protocol.py", line 2819, in processHandshake
        self.sendServerStatus()
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/websocket/protocol.py", line 3276, in sendServerStatus
        self.sendHtml(html)
      File "/usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg/autobahn/websocket/protocol.py", line 3219, in sendHtml
        response += "Content-Length: %d\x0d\x0a" % len(raw)
    exceptions.NameError: global name 'raw' is not defined

我的测试服务器：

import sys
from twisted.python import log
from twisted.internet import reactor
from autobahn.twisted.websocket import listenWS
from autobahn.wamp import WampServerFactory, \
                          WampServerProtocol

class PubSubServer1(WampServerProtocol):

   def onSessionOpen(self):

      self.registerForPubSub("http://test.com/test")

if __name__ == '__main__':

   log.startLogging(sys.stdout)

   factory = WampServerFactory("ws://localhost:9000", debugWamp = 'debug',externalPort=80)
   factory.protocol = PubSubServer1
   factory.setProtocolOptions(allowHixie76 = True)
   listenWS(factory)

   #reactor.listenTCP(9000, factory)
   reactor.run()

命令：

~$ python /home/my/wsbroker.py 
/usr/local/lib/python2.7/dist-packages/zope.interface-4.0.5-py2.7-linux-x86_64.egg/zope/__init__.py:3: UserWarning: Module twisted was already imported from /usr/lib/python2.7/dist-packages/twisted/__init__.pyc, but /usr/local/lib/python2.7/dist-packages/autobahn-0.7.3-py2.7.egg is being added to sys.path

编辑

：
失败握手的调试信息（使用Web代理的客户端）：http://pastebin.com/aN4ppA2e
已完成握手的调试信息（无代理的客户端）：http://pastebin.com/5rXREY2q

Answer 1

您在上面看到的回溯是由于Autobahn 0.7.0引入的一个错误，并在0.7.4中修复。

然而，该错误可能不是您实际问题的原因：回溯显示Autobahn正在尝试呈现纯HTML服务器状态页面 - 当它收到的HTTP请求不包含升级到Websocket时它会这样做头。您的代理可能尚未配置为正确转发WebSocket。

您可能遇到的另一件事：Autobahn的WebSocketServerFactory提供了设置externalPort的选项。这应该设置为代理的TCP / IP端口，在该端口下它接受WebSocket连接。这是必需的，因为Autobahn将（符合WebSocket规范）检查WebSocket打开HTTP请求主机和端口是否与其运行的主机和端口匹配（如果它不同，则纾困）。提到的选项允许您覆盖该行为。

Answer 2

尝试使用安全的websockets（wss），因为代理通常不支持非安全的websockets。

Autobahn 0.7.3 - 当客户端在http代理后面时，Proxied Websocket失败

2 个答案: