Add GetRemoteUserCredentials

Need by pion/webrtc for ICE Restarts

Relates to pion/webrtc#1251

agent.go

@@ -706,6 +706,11 @@ func (a *Agent) GetLocalUserCredentials() (frag string, pwd string) {
 	return a.localUfrag, a.localPwd
 }
 
+// GetRemoteUserCredentials returns the remote user credentials
+func (a *Agent) GetRemoteUserCredentials() (frag string, pwd string) {
+	return a.remoteUfrag, a.remotePwd
+}
+
 // Close cleans up the Agent
 func (a *Agent) Close() error {
 	done := make(chan struct{})

agent_test.go

@@ -1455,3 +1455,11 @@ func TestAgentRestart(t *testing.T) {
 		assert.NoError(t, connB.agent.Close())
 	})
 }
+
+func TestGetRemoteCredentials(t *testing.T) {
+	a := Agent{remoteUfrag: "remoteUfrag", remotePwd: "remotePwd"}
+
+	actualUfrag, actualPwd := a.GetRemoteUserCredentials()
+	assert.Equal(t, actualUfrag, a.remoteUfrag)
+	assert.Equal(t, actualPwd, a.remotePwd)
+}