onDatachannel not working :(
koiba...@gmail.com
I have two PeerConnections, which is properly established and can forward video and audio.
I created datachannel before creating the offer
when I "createDataChannel" and "registerObserver", "onStateChange" method is triggered and datachannel state is open.
But I attached the ondatachannel event to the PeerConnection. It never triggers for some reason. So i cannot get remote datachannel.
A log showed A datachannel is open
B log showed B datachannel is open
But A never trigger the B peerconnection's "onDataChannel" event
B never trigger the A peerconnection's "onDataChannel" event
Why I cannot establish datachannel? :(
//local peerconnection
DataChannel dataChannel = pc.createDataChannel("ApprtcDemo data", init);
dataChannel.registerObserver(new DataChannel.Observer() {
@Override
public void onBufferedAmountChange(long previousAmount) { }
@Override
public void onStateChange() { }
@Override
public void onMessage(final DataChannel.Buffer buffer) {}
});
//remote peerconnection
public void onDataChannel(DataChannel dc) { // it never never never triggers
datachannel = dc;
dc.registerObserver(new DataChannel.Observer() {
@Override
public void onBufferedAmountChange(long previousAmount) {
}
@Override
public void onStateChange() {
}
@Override
public void onMessage(final DataChannel.Buffer buffer) {
}
});
}
Here is "local" SDP
{sdpAnswer=v=0
o=- 3743307821 3743307821 IN IP4 0.0.0.0
s=Kurento Media Server
c=IN IP4 0.0.0.0
t=0 0
a=msid-semantic: WMS ARDAMS
a=group:BUNDLE 0 1
m=video 1 UDP/TLS/RTP/SAVPF 96 100
a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=mid:0
a=rtcp:9 IN IP4 0.0.0.0
a=rtpmap:96 VP8/90000
a=rtpmap:100 H264/90000
a=rtcp-fb:96 goog-remb
a=rtcp-fb:96 ccm fir
a=rtcp-fb:96 nack
a=rtcp-fb:96 nack pli
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=setup:active
a=sendrecv
a=rtcp-mux
a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
a=ssrc:4275305174 cname:user3113647210@host-e35e4a62
a=ice-ufrag:3QZ4
a=ice-pwd:xwhcs0o3G1Smj4GNscNi6A
a=fingerprint:sha-256 0B:6F:CC:0A:89:A3:09:CD:92:F3:08:11:F7:4C:6D:B0:9F:80:24:3A:EA:C1:AA:06:E6:4C:9A:F3:3B:6B:6D:5B
m=audio 1 UDP/TLS/RTP/SAVPF 111 0
a=mid:1
a=rtcp:9 IN IP4 0.0.0.0
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=setup:active
a=sendrecv
a=rtcp-mux
a=fmtp:111 minptime=10;useinbandfec=1
a=ssrc:4034525503 cname:user3113647210@host-e35e4a62
a=ice-ufrag:3QZ4
a=ice-pwd:xwhcs0o3G1Smj4GNscNi6A
a=fingerprint:sha-256 0B:6F:CC:0A:89:A3:09:CD:92:F3:08:11:F7:4C:6D:B0:9F:80:24:3A:EA:C1:AA:06:E6:4C:9A:F3:3B:6B:6D:5B
, }
Here is "remote" SDP
{sdpAnswer=v=0
o=- 3743307821 3743307821 IN IP4 0.0.0.0
s=Kurento Media Server
c=IN IP4 0.0.0.0
t=0 0
a=msid-semantic: WMS
a=group:BUNDLE 0 1
m=audio 1 UDP/TLS/RTP/SAVPF 111 0
a=mid:0
a=rtcp:9 IN IP4 0.0.0.0
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=setup:active
a=sendonly
a=rtcp-mux
a=fmtp:111 minptime=10;useinbandfec=1
a=ssrc:3777116269 cname:user1501105106@host-d10399e7
a=ice-ufrag:fQBB
a=ice-pwd:8F5PyS8fVfGwUAcvG7ejpy
a=fingerprint:sha-256 0B:6F:CC:0A:89:A3:09:CD:92:F3:08:11:F7:4C:6D:B0:9F:80:24:3A:EA:C1:AA:06:E6:4C:9A:F3:3B:6B:6D:5B
m=video 1 UDP/TLS/RTP/SAVPF 96 100
a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time
a=mid:1
a=rtcp:9 IN IP4 0.0.0.0
a=rtpmap:96 VP8/90000
a=rtpmap:100 H264/90000
a=rtcp-fb:96 goog-remb
a=rtcp-fb:96 ccm fir
a=rtcp-fb:96 nack
a=rtcp-fb:96 nack pli
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=setup:active
a=sendonly
a=rtcp-mux
a=fmtp:100 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
a=ssrc:20397261 cname:user1501105106@host-d10399e7
a=ice-ufrag:fQBB
a=ice-pwd:8F5PyS8fVfGwUAcvG7ejpy
a=fingerprint:sha-256 0B:6F:CC:0A:89:A3:09:CD:92:F3:08:11:F7:4C:6D:B0:9F:80:24:3A:EA:C1:AA:06:E6:4C:9A:F3:3B:6B:6D:5B
, },
Steve Anton
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