我有一个通过套接字输出JSON的应用程序，该套接字在过去运行良好，但是最近该套接字似乎没有建立，并且它通过以下行不断进行POST和GET：
<user_ip>,<client_ip> - - [17/Jul/2018 12:48:17]"GET /socket.io/?EIO=3&transport=polling......HTTP/1.1" 200 221 0.000000
<user_ip>,<client_ip> - - [17/Jul/2018 12:48:17]"POST /socket.io/?EIO=3&transport=polling......HTTP/1.1" 200 243 0.517600
此外，当WebSocket首次尝试时，我可以从Chrome控制台中看到以下消息：
与.....的WebSocket连接失败：通过代理服务器建立隧道失败。
我还浏览了我认为是基于socketIO-client的similar issue，但无法解决我的问题。
任何人都可以帮助解决此连接问题吗？
包括以下有关运行该应用程序的完整日志：
Server initialized for eventlet.
* Debugger is active!
* Debugger PIN: 129-744-633
(7616) wsgi starting up on http://0.0.0.0:6328
(7616) accepted (<client_ip>, 50548)
<user_ip>,<client_ip> - - [17/Jul/2018 13:18:23] "GET /<app_url> HTTP/1.1" 200 1664 0.015000
3602c46fa50247eb9d397fda82f3eae8: Sending packet OPEN data {'sid': '3602c46fa50247eb9d397fda82f3eae8', 'upgrades': ['websocket'], 'pingTimeout': 60000, 'pingInterval': 25000}
3602c46fa50247eb9d397fda82f3eae8: Sending packet MESSAGE data 0
<user_ip>,<client_ip> - - [17/Jul/2018 13:18:23] "GET /socket.io/?EIO=3&transport=polling&t=1531829903367-0 HTTP/1.1" 200 381 0.000000
(7616) accepted (<client_ip>, 50560)
3602c46fa50247eb9d397fda82f3eae8: Received packet MESSAGE data 0/testnamespace
3602c46fa50247eb9d397fda82f3eae8: Sending packet MESSAGE data 0/testnamespace
<user_ip>,<client_ip> - - [17/Jul/2018 13:18:23] "POST /socket.io/?EIO=3&transport=polling&t=1531829903377-1&sid=3602c46fa50247eb9d397fda82f3eae8 HTTP/1.1" 200 221 0.000000
<user_ip>,<client_ip> - - [17/Jul/2018 13:18:23] "GET /socket.io/?EIO=3&transport=polling&t=1531829903379-2&sid=3602c46fa50247eb9d397fda82f3eae8 HTTP/1.1" 200 226 0.000000
(7616) accepted (<client_ip>, 50562)
3602c46fa50247eb9d397fda82f3eae8: Received packet MESSAGE data 2/testnamespace,["event_1",{"data":"Web app connection successful."}]
3602c46fa50247eb9d397fda82f3eae8: Sending packet MESSAGE data 2/testnamespace,["client_event",{"json":[{"Date&Time":"........}]