Module sip_util 

Small SIP helpers shared across modules.

Functions

ensure_sip_scheme

Ensure a SIP URI carries a sip:/sips: scheme, prepending sip: when missing.

hangup_headers_from_extras

Extract the hangup-headers map stored under _hangup_headers in extras, converted to SIP headers.

sip_headers_from_map

Convert a map of header name/value pairs into SIP headers.