SIP/2.0 200 OK
Via: SIP/2.0/UDP nm;branch=foo;rport=26810;received=224.217.243.45
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=pyZDe5Z3rtaae
Call-ID: 50000
CSeq: 42 OPTIONS
Contact: <sip:85.172.174.19>
User-Agent: FreeSWITCH-mod_sofia/1.10.7-release+git~20211024T163933Z~883d2cb662~64bit
Accept: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY
Supported: timer, path, replaces
Allow-Events: talk, hold, conference, refer
Content-Length: 0

HTTP/1.1 426 Upgrade Required
Server: WebSocket++/0.7.0

Portainer1.23.2

Portainer

HTTP/1.1 200 OK
Accept-Ranges: bytes
Cache-Control: no-cache, no-store, must-revalidate
Content-Length: 23032
Content-Type: text/html; charset=utf-8
Last-Modified: Thu, 19 Mar 2020 22:46:17 GMT
X-Content-Type-Options: nosniff
X-Xss-Protection: 1; mode=block
Date: Tue, 11 Mar 2025 18:46:26 GMT