PR comment - switched to RWmutex

Author: alexlivekit

pkg/sip/inbound.go

@@ -162,9 +162,9 @@ func (s *Server) getInvite(sipCallID, toTag, fromTag string) *inProgressInvite {
 		fromTag:   fromTag,
 	}
 
-	s.imu.Lock()
+	s.imu.RLock()
 	is, exists := s.inProgressInvites[key]
-	s.imu.Unlock()
+	s.imu.RUnlock()
 	if !exists {
 		s.imu.Lock()
 		is, exists = s.inProgressInvites[key]

pkg/sip/server.go

@@ -139,7 +139,7 @@ type Server struct {
 	sipUnhandled       RequestHandler
 	inviteTimeoutQueue utils.TimeoutQueue[dialogKey]
 
-	imu               sync.Mutex
+	imu               sync.RWMutex
 	inProgressInvites map[dialogKey]*inProgressInvite
 
 	closing     core.Fuse