Protocol scope and method
The parser is line-oriented and reports common SIP headers used in device registration and media sessions. It does not send network requests.
start-line + headers + blank line + optional body.
Common questions
Does the GB/T 28181 SIP Message Parser leave my browser?
No application upload is used. Avoid putting sensitive production data in shareable URLs.
Is this a standards compliance test?
No. Confirm the edition and vendor profile with licensed documents and your target platform.
Offline diagnostic aid. Verify fields, version and vendor extensions before production use.