pub fn extract_request_uri(message: &str) -> Option<String>Expand description
Extract the Request-URI from a SIP request message.
Parses the first line as Method SP Request-URI SP SIP-Version
(RFC 3261 Section 7.1) and returns the Request-URI.
Returns None for status lines (SIP/2.0 200 OK) or if the
request line cannot be parsed.