java - webrtc Android クライアントにリモートセッションの説明を追加できない

Question

サーバーからの応答:

{
    "rtcid": "wKAm8eeyI-mQ5dsslkhu",
    "msgType": "offer",
    "senderrtcid": "53wp_LP5CYDie3eIlkhw",
    "msgData": {
        "type": "offer",
        "sdp": "v=0\r\no=- 951920257545056255 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE audio video\r\na=msid-semantic: WMS OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM\r\nm=audio 1 RTP/SAVPF 111 103 104 0 8 106 105 13 126\r\nc=IN IP4 0.0.0.0\r\na=rtcp:1 IN IP4 0.0.0.0\r\na=ice-ufrag:CF4q+RW54gQVPaz0\r\na=ice-pwd:hEIbgX4MME6cPkZKGih7bjQM\r\na=ice-options:google-ice\r\na=fingerprint:sha-256 1E:7F:B8:BA:1A:8D:76:BE:A9:A5:A3:9D:59:3E:CC:BD:1B:90:7B:89:EF:F0:03:B3:9A:CA:9C:07:02:97:53:6F\r\na=setup:actpass\r\na=mid:audio\r\na=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:111 opus/48000/2\r\na=fmtp:111 minptime=10\r\na=rtpmap:103 ISAC/16000\r\na=rtpmap:104 ISAC/32000\r\na=rtpmap:0 PCMU/8000\r\na=rtpmap:8 PCMA/8000\r\na=rtpmap:106 CN/32000\r\na=rtpmap:105 CN/16000\r\na=rtpmap:13 CN/8000\r\na=rtpmap:126 telephone-event/8000\r\na=maxptime:60\r\na=ssrc:777379316 cname:Dl+cb/nGYCzEcTvH\r\na=ssrc:777379316 msid:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM 0937b040-5691-4ae3-b533-dd9ce82c4393\r\na=ssrc:777379316 mslabel:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM\r\na=ssrc:777379316 label:0937b040-5691-4ae3-b533-dd9ce82c4393\r\nm=video 1 RTP/SAVPF 100 116 117 96\r\nc=IN IP4 0.0.0.0\r\na=rtcp:1 IN IP4 0.0.0.0\r\na=ice-ufrag:CF4q+RW54gQVPaz0\r\na=ice-pwd:hEIbgX4MME6cPkZKGih7bjQM\r\na=ice-options:google-ice\r\na=fingerprint:sha-256 1E:7F:B8:BA:1A:8D:76:BE:A9:A5:A3:9D:59:3E:CC:BD:1B:90:7B:89:EF:F0:03:B3:9A:CA:9C:07:02:97:53:6F\r\na=setup:actpass\r\na=mid:video\r\na=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:100 VP8/90000\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=rtcp-fb:100 goog-remb\r\na=rtpmap:116 red/90000\r\na=rtpmap:117 ulpfec/90000\r\na=rtpmap:96 rtx/90000\r\na=fmtp:96 apt=100\r\na=ssrc-group:FID 187598656 415229902\r\na=ssrc:187598656 cname:Dl+cb/nGYCzEcTvH\r\na=ssrc:187598656 msid:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM 02ab4641-6cd5-43be-b0fe-9952585642bf\r\na=ssrc:187598656 mslabel:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM\r\na=ssrc:187598656 label:02ab4641-6cd5-43be-b0fe-9952585642bf\r\na=ssrc:415229902 cname:Dl+cb/nGYCzEcTvH\r\na=ssrc:415229902 msid:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM 02ab4641-6cd5-43be-b0fe-9952585642bf\r\na=ssrc:415229902 mslabel:OfkjcHABgxUkHlk8mfJ8ayYZdCHqdpQGFSTM\r\na=ssrc:415229902 label:02ab4641-6cd5-43be-b0fe-9952585642bf\r\n"
    },
    "serverTime": 1431342100822
}

ログ

libjingle: Ignored line: c=IN IP4 0.0.0.0
libjingle: Error(transport.cc:97): Answerer must use either active or passive value for setup attribute.
libjingle:Error(webrtcsession.cc:272): Failed to set remote answer sdp: Failed to push down transport description: Answerer must use either active or passive value for setup attribute.

**最初にオファーを作成し、localdescription を追加してから、emit を使用してそれをサーバーに送信します。サーバーのリターンコールバックにはリモート sdp が含まれます **

    public void onCreateSuccess(SessionDescription arg0) {


        // TODO Auto-generated method stub


              try {

                    if(arg0.type.canonicalForm().equalsIgnoreCase("answer")){
                          peer.setRemoteDescription(this, sdp);
                    //  mListener.onAddRemoteStream(localMS, 0);
                    }

                    else{
                payload = new JSONObject();
                payload.put("type", arg0.type.canonicalForm());
                Log.d("offer", arg0.type.canonicalForm().toString());
                payload.put("sdp", arg0.description);

                    sendMessage("rtcsid", arg0.type.canonicalForm(), payload);
                  peer.setLocalDescription(this, arg0);


               }
              } catch (JSONException e) {
                e.printStackTrace();
            }

アイス候補:

    public void onIceCandidate(IceCandidate arg0) {
        // TODO Auto-generated method stub

        Log.d("IceCandidate", arg0.toString());
         JSONObject payload = new JSONObject();

         try {

                payload.put("type", arg0.sdpMLineIndex);
                Log.d("sdpMLineIndex", Integer.toString(arg0.sdpMLineIndex));
                payload.put("id", arg0.sdpMid);
                Log.d("sdpMid",  arg0.sdpMid.toString());
                payload.put("type", arg0.sdp);
                Log.d("candidate",  arg0.sdp.toString());
               sendMessage("easyrtcsid", "candidate", payload);

              if(peer.getRemoteDescription()!=null){
                IceCandidate candidate = new IceCandidate(
                        arg0.sdpMid,
                        arg0.sdpMLineIndex,
                        arg0.sdp.toString()
                );
                peer.addIceCandidate(candidate);
                }

            } catch (JSONException e) {
                e.printStackTrace();
            }


    }

候補者のログ

{
05-11 14:59:28.495: I/libjingle(14672): Local and Remote descriptions must be applied to get SSL Role of the session.
05-11 14:59:28.495: I/libjingle(14672): Transport: audio, allocating candidates
05-11 14:59:28.495: D/IceGatheringChange(14672): GATHERING
05-11 14:59:28.495: I/libjingle(14672): Transport: audio, allocating candidates
05-11 14:59:28.495: D/IceGatheringChange(14672): GATHERING
05-11 14:59:28.495: I/libjingle(14672): Transport: video, allocating candidates
05-11 14:59:28.495: D/IceGatheringChange(14672): GATHERING
05-11 14:59:28.495: I/libjingle(14672): Transport: video, allocating candidates
05-11 14:59:28.495: D/IceGatheringChange(14672): GATHERING
05-11 14:59:28.495: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Udp
05-11 14:59:28.505: I/libjingle(14672): Jingle:Port[:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.505: I/libjingle(14672): AllocationSequence: UDPPort will be handling the STUN candidate generation.
05-11 14:59:28.505: I/libjingle(14672): Adding allocated port for audio
05-11 14:59:28.505: I/libjingle(14672): Jingle:Port[audio:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.525: D/IceCandidate(14672): audio:0:candidate:1281544012 1 udp 2122260223 10.0.0.112 49865 typ host generation 0
05-11 14:59:28.525: D/sdpMLineIndex(14672): 0
05-11 14:59:28.525: D/sdpMid(14672): audio
05-11 14:59:28.525: D/candidate(14672): candidate:1281544012 1 udp 2122260223 10.0.0.112 49865 typ host generation 0
05-11 14:59:28.525: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Udp
05-11 14:59:28.525: I/libjingle(14672): Jingle:Port[:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.525: I/libjingle(14672): AllocationSequence: UDPPort will be handling the STUN candidate generation.
05-11 14:59:28.525: I/libjingle(14672): Adding allocated port for audio
05-11 14:59:28.525: I/libjingle(14672): Jingle:Port[audio:2:0::Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.555: D/IceCandidate(14672): audio:0:candidate:1281544012 2 udp 2122260222 10.0.0.112 36221 typ host generation 0
05-11 14:59:28.555: D/sdpMLineIndex(14672): 0
05-11 14:59:28.555: D/sdpMid(14672): audio
05-11 14:59:28.555: D/candidate(14672): candidate:1281544012 2 udp 2122260222 10.0.0.112 36221 typ host generation 0
05-11 14:59:28.555: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Udp
05-11 14:59:28.555: I/libjingle(14672): Jingle:Port[:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.555: I/libjingle(14672): AllocationSequence: UDPPort will be handling the STUN candidate generation.
05-11 14:59:28.555: I/libjingle(14672): Adding allocated port for video
05-11 14:59:28.555: I/libjingle(14672): Jingle:Port[video:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.565: D/IceCandidate(14672): video:1:candidate:1281544012 1 udp 2122260223 10.0.0.112 57380 typ host generation 0
05-11 14:59:28.565: D/sdpMLineIndex(14672): 1
05-11 14:59:28.565: D/sdpMid(14672): video
05-11 14:59:28.565: D/candidate(14672): candidate:1281544012 1 udp 2122260223 10.0.0.112 57380 typ host generation 0
05-11 14:59:28.575: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Udp
05-11 14:59:28.575: I/libjingle(14672): Jingle:Port[:1:0::Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.575: I/libjingle(14672): AllocationSequence: UDPPort will be handling the STUN candidate generation.
05-11 14:59:28.575: I/libjingle(14672): Adding allocated port for video
05-11 14:59:28.575: I/libjingle(14672): Jingle:Port[video:2:0::Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.605: D/IceCandidate(14672): video:1:candidate:1281544012 2 udp 2122260222 10.0.0.112 48445 typ host generation 0
05-11 14:59:28.605: D/sdpMLineIndex(14672): 1
05-11 14:59:28.605: D/sdpMid(14672): video
05-11 14:59:28.605: D/candidate(14672): candidate:1281544012 2 udp 2122260222 10.0.0.112 48445 typ host generation 0
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.625: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Relay
05-11 14:59:28.625: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Relay
05-11 14:59:28.635: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.635: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Relay
05-11 14:59:28.635: W/libjingle(14672): Warning(thread.cc:320): Waiting for the thread to join, but blocking calls have been disallowed
05-11 14:59:28.635: D/IceCandidate(14672): audio:0:candidate:2940422560 1 udp 1686052607 197.44.239.36 49865 typ srflx raddr 10.0.0.112 rport 49865 generation 0
05-11 14:59:28.635: D/sdpMLineIndex(14672): 0
05-11 14:59:28.635: D/sdpMid(14672): audio
05-11 14:59:28.635: D/candidate(14672): candidate:2940422560 1 udp 1686052607 197.44.239.36 49865 typ srflx raddr 10.0.0.112 rport 49865 generation 0
05-11 14:59:28.645: D/IceCandidate(14672): audio:0:candidate:2940422560 2 udp 1686052606 197.44.239.36 36221 typ srflx raddr 10.0.0.112 rport 36221 generation 0
05-11 14:59:28.645: D/sdpMLineIndex(14672): 0
05-11 14:59:28.645: D/sdpMid(14672): audio
05-11 14:59:28.645: D/candidate(14672): candidate:2940422560 2 udp 1686052606 197.44.239.36 36221 typ srflx raddr 10.0.0.112 rport 36221 generation 0
05-11 14:59:28.665: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Relay
05-11 14:59:28.675: D/IceCandidate(14672): video:1:candidate:2940422560 1 udp 1686052607 197.44.239.36 57380 typ srflx raddr 10.0.0.112 rport 57380 generation 0
05-11 14:59:28.675: D/sdpMLineIndex(14672): 1
05-11 14:59:28.675: D/sdpMid(14672): video
05-11 14:59:28.675: D/candidate(14672): candidate:2940422560 1 udp 1686052607 197.44.239.36 57380 typ srflx raddr 10.0.0.112 rport 57380 generation 0
05-11 14:59:28.685: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Tcp
05-11 14:59:28.685: I/libjingle(14672): Jingle:Port[:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.685: I/libjingle(14672): Adding allocated port for audio
05-11 14:59:28.685: I/libjingle(14672): Jingle:Port[audio:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.685: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Tcp
05-11 14:59:28.685: D/IceCandidate(14672): audio:0:candidate:48313276 1 tcp 1518280447 10.0.0.112 40627 typ host tcptype passive generation 0
05-11 14:59:28.685: D/sdpMLineIndex(14672): 0
05-11 14:59:28.685: D/sdpMid(14672): audio
05-11 14:59:28.685: D/candidate(14672): candidate:48313276 1 tcp 1518280447 10.0.0.112 40627 typ host tcptype passive generation 0
05-11 14:59:28.685: I/libjingle(14672): Jingle:Port[:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.685: I/libjingle(14672): Adding allocated port for audio
05-11 14:59:28.685: I/libjingle(14672): Jingle:Port[audio:2:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.685: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Tcp
05-11 14:59:28.685: D/IceCandidate(14672): audio:0:candidate:48313276 2 tcp 1518280446 10.0.0.112 48390 typ host tcptype passive generation 0
05-11 14:59:28.685: D/sdpMLineIndex(14672): 0
05-11 14:59:28.685: D/sdpMid(14672): audio
05-11 14:59:28.685: D/candidate(14672): candidate:48313276 2 tcp 1518280446 10.0.0.112 48390 typ host tcptype passive generation 0
05-11 14:59:28.695: I/libjingle(14672): Jingle:Port[:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.695: I/libjingle(14672): Adding allocated port for video
05-11 14:59:28.695: I/libjingle(14672): Jingle:Port[video:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.695: D/IceCandidate(14672): video:1:candidate:48313276 1 tcp 1518280447 10.0.0.112 60960 typ host tcptype passive generation 0
05-11 14:59:28.695: D/sdpMLineIndex(14672): 1
05-11 14:59:28.695: D/sdpMid(14672): video
05-11 14:59:28.695: D/candidate(14672): candidate:48313276 1 tcp 1518280447 10.0.0.112 60960 typ host tcptype passive generation 0
05-11 14:59:28.705: D/IceCandidate(14672): video:1:candidate:2940422560 2 udp 1686052606 197.44.239.36 48445 typ srflx raddr 10.0.0.112 rport 48445 generation 0
05-11 14:59:28.705: D/sdpMLineIndex(14672): 1
05-11 14:59:28.715: D/sdpMid(14672): video
05-11 14:59:28.715: D/candidate(14672): candidate:2940422560 2 udp 1686052606 197.44.239.36 48445 typ srflx raddr 10.0.0.112 rport 48445 generation 0
05-11 14:59:28.725: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=Tcp
05-11 14:59:28.725: I/libjingle(14672): Jingle:Port[:1:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Port created
05-11 14:59:28.725: I/libjingle(14672): Adding allocated port for video
05-11 14:59:28.725: I/libjingle(14672): Jingle:Port[video:2:0:local:Net[wlan0:10.0.0.0/8:Unknown]]: Added port to allocator
05-11 14:59:28.725: D/IceCandidate(14672): video:1:candidate:48313276 2 tcp 1518280446 10.0.0.112 59723 typ host tcptype passive generation 0
05-11 14:59:28.725: D/sdpMLineIndex(14672): 1
05-11 14:59:28.725: D/sdpMid(14672): video
05-11 14:59:28.725: D/candidate(14672): candidate:48313276 2 tcp 1518280446 10.0.0.112 59723 typ host tcptype passive generation 0
05-11 14:59:28.735: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=SslTcp
05-11 14:59:28.735: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=SslTcp
05-11 14:59:28.735: I/libjingle(14672): All candidates gathered for audio:2:0
05-11 14:59:28.735: I/libjingle(14672): Transport: audio, component 2 allocation complete
05-11 14:59:28.745: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=SslTcp
05-11 14:59:28.745: I/libjingle(14672): All candidates gathered for video:1:0
05-11 14:59:28.745: I/libjingle(14672): Transport: video, component 1 allocation complete
05-11 14:59:28.775: I/libjingle(14672): Jingle:Net[wlan0:10.0.0.0/8:Unknown]: Allocation Phase=SslTcp
05-11 14:59:28.775: I/libjingle(14672): All candidates gathered for video:2:0
05-11 14:59:28.775: I/libjingle(14672): Transport: video, component 2 allocation complete
05-11 14:59:28.775: I/libjingle(14672): Transport: video allocation complete
05-11 14:59:28.775: I/libjingle(14672): Candidate allocation not done for audio
05-11 14:59:28.795: I/libjingle(14672): All candidates gathered for audio:1:0
05-11 14:59:28.795: I/libjingle(14672): Transport: audio, component 1 allocation complete
05-11 14:59:28.795: I/libjingle(14672): Transport: audio allocation complete
05-11 14:59:28.795: I/libjingle(14672): Candidate gathering is complete.
05-11 14:59:28.795: D/IceGatheringChange(14672): COMPLETE
}

MediaConstraints

 pcConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveAudio", "true"));
                pcConstraints.mandatory.add(new MediaConstraints.KeyValuePair("OfferToReceiveVideo", "true"));
                pcConstraints.optional.add(new MediaConstraints.KeyValuePair("DtlsSrtpKeyAgreement", "true"));

score 6 · Accepted Answer

これは私自身の謙虚なコードであり、完璧ではない可能性があり、すべてを自分のプロジェクトにコピーするのは難しいかもしれないことに注意してください。それは私にとってはうまくいきますが、それは他のすべての人にとってうまくいくという意味ではありません.

通話を設定するプロセスは次のとおりです (注: これは決まった設定ではありません)。

A と B の 2 つのデバイスがあり、どちらもある種のシグナリングサーバーに接続されており、SDP と ICE 候補を交換したり、お互いを通話に招待したりできます...

A が通話を開始すると、最初のステップは B に招待を送信することになると思われます。この時点で、次のコードを使用して、peerconnection オブジェクトも初期化することをお勧めします。

//initialize the peerconnection factory
PeerConnectionFactory.initializeAndroidGlobals(MainActivity.context, true, true, true, parent.tex_remote);
factory = new PeerConnectionFactory();

//ice server initialization
ArrayList<PeerConnection.IceServer> iceServers = new ArrayList<>();
iceServers.add(new PeerConnection.IceServer("stun:stun.xxx.xxx:xxx"));
iceServers.add(new PeerConnection.IceServer("turn:turn.xxx.xxx:xxx", "xxx", "xxx"));

//create a new contraints object to configure the connection
MediaConstraints connectionConstraints = new MediaConstraints();
connectionConstraints.mandatory.add(new MediaConstraints.KeyValuePair("offerToReceiveAudio", "true"));
connectionConstraints.mandatory.add(new MediaConstraints.KeyValuePair("offerToReceiveVideo", "true"));
connectionConstraints.optional.add(new MediaConstraints.KeyValuePair("DtlsSrtpKeyAgreement", "true"));

//create a new peerconnection object
peerConnection = factory.createPeerConnection(iceServers, connectionConstraints, observer);

これが完了し、peerconnection オブジェクトを取得したら、次のコードを使用してローカルメディアストリームを初期化できます。

//create a new audio and video source, this is the stream that will be sent to the remote
VideoSource videoSource = factory.createVideoSource(VideoCapturer.create("Camera 1, Facing front, Orientation 270"), new MediaConstraints());
AudioSource audioSource = factory.createAudioSource(new MediaConstraints());

//create a new audio and video track
VideoTrack videoTrack = factory.createVideoTrack("ARDAMSv0", videoSource);
AudioTrack audioTrack = factory.createAudioTrack("ARDAMSa0", audioSource);

//create a new media stream, this holds all local streams and their tracks
MediaStream lms = factory.createLocalMediaStream("ARDAMS");

//create a new video renderer and add it to the video track
VideoRenderer renderer = new VideoRenderer(parent);
videoTrack.addRenderer(renderer);

//add the video track to the stream
lms.addTrack(videoTrack);
//add the audio track to the stream
lms.addTrack(audioTrack);

//add the stream to the connection
peerConnection.addStream(lms);

その間、B はシグナリングサーバーから呼び出しの招待を受信し、何らかの種類の着信ビューをユーザーに提示する必要があります。ユーザーが通話に応答することを決定すると、B は受け入れ信号を A に送り返します。

A がこの受け入れ信号を受信したら、通話自体の設定を開始します。A で createOffer() を呼び出すと、ライブラリは成功した場合に onCreateSuccess() を呼び出します。

peerConnection.createOffer(observer, new MediaConstraints());

onCreateSuccess() では、新しく作成された SDP で setLocalDescription() を呼び出すことができます。また、この SDP を B に送信する必要があるため、ここで送信することもできます。

peerConnection.setLocalDescription(this, sessionDescription);
//send this SDP to your remote peer

B は A のオファーを受け取ります。setRemoteDescription() を呼び出して設定する必要があります。

peerConnection.setRemoteDescription(observer, sdp);

これが成功すると、ライブラリは onSetSuccess() を呼び出します。onSetSuccess() では、createAnswer() を呼び出すことができます。

peerConnection.createAnswer(observer, constraints);

これで、最初のオファー SDP が設定されたことを確認できたからです。ライブラリは onCreateSuccess() を再度呼び出します。A のオファーと同じことが、B の回答でも起こります。回答をローカル SDP として設定し、A に送信します。

peerConnection.setLocalDescription(this, sessionDescription);
//send this SDP to your remote peer

以上でSDPの交換は完了です。ライブラリは onIceCandidate() も何度も呼び出します。この ICE 候補を他のピアに送信し、他のピアから ICE 候補を受信したときに peerConnection.addIceCandidate() を呼び出すだけです。

score 0 · Accepted Answer

pcConstraints.optional.add(new KeyValuePair("DtlsSrtpKeyAgreement", "true"));
pcConstraints.optional.add(new KeyValuePair("RtpDataChannels", "true"));

java - webrtc Android クライアントにリモート セッションの説明を追加できない

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java - webrtc Android クライアントにリモートセッションの説明を追加できない