Add Record-Route support (#77)

* add Record-Rotte support

* add Record-Rotte support

* delete .idea

Co-authored-by: duxiangbin <[email protected]>

Author: bean-du

Diff for: .gitignore

@@ -2,6 +2,7 @@
 certs
 
 # Binaries for programs and plugins
+.idea
 *.exe
 *.exe~
 *.dll

Diff for: pkg/session/session.go

@@ -241,10 +241,9 @@ func (s *Session) ReInvite() {
 }
 
 //Bye send Bye request.
-func (s *Session) Bye() {
-	method := sip.BYE
-	req := s.makeRequest(s.uaType, method, sip.MessageID(s.callID), s.request, s.response)
-	s.sendRequest(req)
+func (s *Session) Bye() (sip.Response, error) {
+	req := s.makeRequest(s.uaType, sip.BYE, sip.MessageID(s.callID), s.request, s.response)
+	return s.sendRequest(req)
 }
 
 func (s *Session) sendRequest(req sip.Request) (sip.Response, error) {
@@ -363,6 +362,8 @@ func (s *Session) Provisional(statusCode sip.StatusCode, reason string) {
 }
 
 func (s *Session) makeRequest(uaType string, method sip.RequestMethod, msgID sip.MessageID, inviteRequest sip.Request, inviteResponse sip.Response) sip.Request {
+	var rh *sip.RouteHeader
+
 	newRequest := sip.NewRequest(
 		msgID,
 		method,
@@ -385,6 +386,15 @@ func (s *Session) makeRequest(uaType string, method sip.RequestMethod, msgID sip
 	newRequest.AppendHeader(s.contact)
 
 	if uaType == "UAC" {
+		for _, header := range s.response.Headers() {
+			if header.Name() == "Record-Route" {
+				h := header.(*sip.RecordRouteHeader)
+				rh = &sip.RouteHeader{
+					Addresses: h.Addresses,
+				}
+			}
+		}
+		newRequest.AppendHeader(rh)
 		if len(inviteRequest.GetHeaders("Route")) > 0 {
 			sip.CopyHeaders("Route", inviteRequest, newRequest)
 		}