diff --git a/main.go b/main.go
index 469fb62..422be8c 100644
--- a/main.go
+++ b/main.go
@@ -47,7 +47,8 @@ import (
 
 //go:embed publish.html
 var publishHTML []byte
-
+//go:embed subscribe.html
+var subscribeHTML []byte
 var (
 	reg_level = regexp.MustCompile("profile-level-id=(4.+f)")
 )
@@ -144,7 +145,7 @@ func (conf *WebRTCConfig) Push_(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-	// puber.SetIO(puber.PeerConnection)
+	puber.SetIO(puber.PeerConnection) //TODO: 单PC需要注释掉
 	puber.OnICECandidate(func(ice *ICECandidate) {
 		if ice != nil {
 			puber.Info(ice.ToJSON().Candidate)
@@ -206,7 +207,9 @@ func (conf *WebRTCConfig) Push_(w http.ResponseWriter, r *http.Request) {
 func (conf *WebRTCConfig) Test_Publish(w http.ResponseWriter, r *http.Request) {
 	w.Write(publishHTML)
 }
-
+func (conf *WebRTCConfig) Test_Subscribe(w http.ResponseWriter, r *http.Request) {
+	w.Write(subscribeHTML)
+}
 var webrtcConfig WebRTCConfig
 
 var WebRTCPlugin = engine.InstallPlugin(&webrtcConfig)
diff --git a/publish.html b/publish.html
index a98f5d7..2b72e8c 100644
--- a/publish.html
+++ b/publish.html
@@ -12,10 +12,20 @@
   <video id="video" width="640" height="480" autoplay muted>
   </video>
   <!-- <button id="sw" onclick="action()" type="button" style="width:100px;height:30px;display: block;">unpublish</button> -->
+<pre>
+  <code id="remoteSdp">
+
+  </code>
+</pre>
 </body>
 <script>
   let action = () => { console.log('action not set'); };
   (async () => {
+    navigator.mediaDevices.enumerateDevices().then((devices) => {
+      devices.forEach((device) => {
+        console.log(device.kind + ": " + device.label + " id = " + device.deviceId);
+      });
+    });
     const mediaStream = await navigator.mediaDevices.getUserMedia({
       video: true,
       audio: true,
@@ -29,12 +39,13 @@
     pc.onicecandidate = (e) => {
       console.log('onicecandidate', e.candidate);
     };
-    // mediaStream.getTracks().forEach((t) => {
-    //     pc.addTrack(t, mediaStream);
-    // });
-    let videoTransceiver = pc.addTransceiver(mediaStream.getVideoTracks()[0], { direction: 'sendonly' });
-    let audioTransceiver = pc.addTransceiver(mediaStream.getAudioTracks()[0], { direction: 'sendonly' });
-    const dc = pc.createDataChannel('sdp');
+    mediaStream.id = 'live/webrtc';
+    mediaStream.getTracks().forEach((t) => {
+        pc.addTrack(t, mediaStream);
+    });
+    // const videoTransceiver = pc.addTransceiver(mediaStream.getVideoTracks()[0], { direction: 'sendonly' });
+    // const audioTransceiver = pc.addTransceiver(mediaStream.getAudioTracks()[0], { direction: 'sendonly' });
+    // const dc = pc.createDataChannel('sdp');
     const offer = await pc.createOffer();
     await pc.setLocalDescription(offer);
     const result = await fetch(
@@ -51,33 +62,34 @@
       },
     );
     const remoteSdp = await result.text();
+    document.getElementById('remoteSdp').innerText = remoteSdp;
     await pc.setRemoteDescription(
       new RTCSessionDescription({ type: 'answer', sdp: remoteSdp }),
     );
-    dc.onmessage = async (e) => {
-      await pc.setRemoteDescription(
-        new RTCSessionDescription({ type: 'answer', sdp: e.data }),
-      );
-    };
-    const publish = async () => {
-      videoTransceiver.direction = 'sendonly';
-      audioTransceiver.direction = 'sendonly';
-      const offer = await pc.createOffer();
-      await pc.setLocalDescription(offer);
-      dc.send('1' + offer.sdp);
-      action = unpublish;
-      document.getElementById('sw').innerText = 'unpublish';
-    };
-    const unpublish = async () => {
-      videoTransceiver.direction = 'inactive';
-      audioTransceiver.direction = 'inactive';
-      const offer = await pc.createOffer();
-      await pc.setLocalDescription(offer);
-      dc.send('0' + offer.sdp);
-      action = publish;
-      document.getElementById('sw').innerText = 'publish';
-    };
-    action = unpublish;
+    // dc.onmessage = async (e) => {
+    //   await pc.setRemoteDescription(
+    //     new RTCSessionDescription({ type: 'answer', sdp: e.data }),
+    //   );
+    // };
+    // const publish = async () => {
+    //   videoTransceiver.direction = 'sendonly';
+    //   audioTransceiver.direction = 'sendonly';
+    //   const offer = await pc.createOffer();
+    //   await pc.setLocalDescription(offer);
+    //   dc.send('1' + offer.sdp);
+    //   action = unpublish;
+    //   document.getElementById('sw').innerText = 'unpublish';
+    // };
+    // const unpublish = async () => {
+    //   videoTransceiver.direction = 'inactive';
+    //   audioTransceiver.direction = 'inactive';
+    //   const offer = await pc.createOffer();
+    //   await pc.setLocalDescription(offer);
+    //   dc.send('0' + offer.sdp);
+    //   action = publish;
+    //   document.getElementById('sw').innerText = 'publish';
+    // };
+    // action = unpublish;
   })()
 </script>
 
diff --git a/publisher.go b/publisher.go
index 45d3c61..750f740 100644
--- a/publisher.go
+++ b/publisher.go
@@ -1,7 +1,6 @@
 package webrtc
 
 import (
-	"fmt"
 	"time"
 
 	"github.com/pion/rtcp"
@@ -75,7 +74,8 @@ func (puber *WebRTCPublisher) writeRTCP(track *TrackRemote) {
 		select {
 		case <-ticker.C:
 			if rtcpErr := puber.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: uint32(track.SSRC())}}); rtcpErr != nil {
-				fmt.Println(rtcpErr)
+				puber.Error("writeRTCP", zap.Error(rtcpErr))
+				return
 			}
 		case <-puber.Done():
 			return
diff --git a/subscribe.html b/subscribe.html
new file mode 100644
index 0000000..2c6bb4a
--- /dev/null
+++ b/subscribe.html
@@ -0,0 +1,87 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>测试WebRTC拉流</title>
+</head>
+
+<body>
+  <video id="video" width="640" height="480" autoplay>
+  </video>
+  <!-- <button id="sw" onclick="action()" type="button" style="width:100px;height:30px;display: block;">unpublish</button> -->
+  <pre>
+  <code id="remoteSdp">
+
+  </code>
+</pre>
+</body>
+<script>
+  let action = () => { console.log('action not set'); };
+  (async () => {
+
+    const pc = new RTCPeerConnection();
+    pc.ontrack = (e) => {
+      console.log('ontrack', e);
+      if (e.streams.length === 0) return;
+      document.getElementById('video').srcObject = e.streams[0];
+    };
+    pc.oniceconnectionstatechange = () => {
+      console.log('oniceconnectionstatechange', pc.iceConnectionState);
+    };
+    pc.onicecandidate = (e) => {
+      console.log('onicecandidate', e.candidate);
+    };
+    pc.addTransceiver('video', { direction: 'recvonly' });
+    pc.addTransceiver('audio', { direction: 'recvonly' });
+    // const dc = pc.createDataChannel('sdp');
+    const offer = await pc.createOffer();
+    await pc.setLocalDescription(offer);
+    const result = await fetch(
+      `/webrtc/play/live/webrtc`,
+      {
+        method: 'POST',
+        mode: 'cors',
+        cache: 'no-cache',
+        credentials: 'include',
+        redirect: 'follow',
+        referrerPolicy: 'no-referrer',
+        headers: { 'Content-Type': 'application/sdp' },
+        body: offer.sdp,
+      },
+    );
+    const remoteSdp = await result.text();
+    document.getElementById('remoteSdp').innerText = remoteSdp;
+    await pc.setRemoteDescription(
+      new RTCSessionDescription({ type: 'answer', sdp: remoteSdp }),
+    );
+    // dc.onmessage = async (e) => {
+    //   await pc.setRemoteDescription(
+    //     new RTCSessionDescription({ type: 'answer', sdp: e.data }),
+    //   );
+    // };
+    // const publish = async () => {
+    //   videoTransceiver.direction = 'sendonly';
+    //   audioTransceiver.direction = 'sendonly';
+    //   const offer = await pc.createOffer();
+    //   await pc.setLocalDescription(offer);
+    //   dc.send('1' + offer.sdp);
+    //   action = unpublish;
+    //   document.getElementById('sw').innerText = 'unpublish';
+    // };
+    // const unpublish = async () => {
+    //   videoTransceiver.direction = 'inactive';
+    //   audioTransceiver.direction = 'inactive';
+    //   const offer = await pc.createOffer();
+    //   await pc.setLocalDescription(offer);
+    //   dc.send('0' + offer.sdp);
+    //   action = publish;
+    //   document.getElementById('sw').innerText = 'publish';
+    // };
+    // action = unpublish;
+  })()
+</script>
+
+</html>
\ No newline at end of file