SIP/2.0 404 Not Found
From: <sip:nm@nm>;tag=root
To: <sip:nm2@nm2>;tag=9eb800-0-13c4-50029-725ea-4a244670-725ea
Call-ID: 50000
CSeq: 42 OPTIONS
Via: SIP/2.0/UDP nm;received=224.174.208.3;rport=26810;branch=foo
Supported: replaces,100rel,timer
Accept: application/sdp
Allow: INVITE,ACK,CANCEL,BYE,OPTIONS,REFER,INFO,NOTIFY,PRACK,MESSAGE
Content-Length: 0

Squid http proxy3.5.20

HTTP/1.1 400 Bad Request
Server: squid/3.5.20
Mime-Version: 1.0
Date: Sun, 30 Jun 2024 01:29:52 GMT
Content-Type: text/html;charset=utf-8
Content-Length: 3522
X-Squid-Error: ERR_INVALID_URL 0
Vary: Accept-Language
Content-Language: en
X-Cache: MISS from ecm-be1c-0037
X-Cache-Lookup: NONE from ecm-be1c-0037:9999
Via: 1.1 ecm-be1c-0037 (squid/3.5.20)
Connection: close