I am using zoho meeting through a proxy server according to the network configuration, but I cannot join the meeting because the websocket is not connected.

1. Normal response when connecting without going through a proxy

request)

GET wss://con-sg10.zohomeeting.com/1015690901/9593547/1833968000001323005 HTTP/1.1
Host: con-sg10.zohomeeting.com
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36
Upgrade: websocket
Origin: https://meetinglab.zoho.com
Sec-WebSocket-Version: 13
Accept-Encoding: gzip, deflate, br
Accept-Language: ko-KR,ko;q=0.9
Sec-WebSocket-Key: prH91ue8eF/l5fcNUmWqRQ==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

2) response

HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Server: ZConferencing
Strict-Transport-Security: max-age=15768000; includeSubDomains; preload
Sec-WebSocket-Accept: DadKoZSPXzks5ptG9GvODtDnsNw=

2. Abnormal response when connecting through proxy

request)

GET /1015690901/7194652/1833968000001324023 HTTP/1.1
Host: con-sg10.zohomeeting.com
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Upgrade: websocket
Origin: https://meetinglab.zoho.com
Sec-WebSocket-Version: 13
Accept-Encoding: gzip, deflate
Accept-Language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
Sec-WebSocket-Key: pccNVBPCtdUF7doUYK4rrQ==

response)

HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Connection: Keep-Alive
Content-Type: text/json; charset=UTF-8
Sec-Websocket-Version: 13
Server: ZConferencing
Strict-Transport-Security: max-age=15768000; includeSubDomains; preload
Date: Tue, 31 May 2022 07:00:51 GMT
Content-Length: 161

{
    "Details":    {
        "BuildLabel":    "m10_poco_ssl_crash_fix_May_25_2022",
        "Source_Changeset":    "04efba8e81191c3009dab5a15d24f992409f05d2",
        "Type":    "ms_build"
    }
}

May I know what the problem is?

Have a nice day.