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Android アプリケーションに Ice4J を実装しようとしていますが、次のコードで行き詰まっています。

NistSdpFactory factory = new NistSdpFactory();
SessionDescription sd = null;

try {
    sd=factory.createSessionDescription();
    /* put some random longs here as seen in examples */
    /* leaving next line would result in o=ice4j.org 0 0 IN null null */
    sd.setOrigin(factory.createOrigin("phone",1235435654721342455L,3521512531241L,"IN","IP4",null));
    IceSdpUtils.initSessionDescription(sd, agent);
    Log.e("ICE","SDP: "+sd.toString()); //this actually works
    /* so far no problems */
    SessionDescription reversed=new SDPAnnounceParser(sd.toString()).parse(); //and this suddenly throws an exception!!!
    Log.e("ICE","Reversed... "+reversed.toString());
} catch (Exception ex){
     Log.e("ICE","Failed to init session description", ex);
     ex.printStackTrace();
}

エージェントの初期化方法は次のとおりです。

Agent agent=new Agent();
String[] hostnames = new String[] {"jitsi.org","numb.viagenie.ca","stun.ekiga.net"};
for(String hostname: hostnames){
    try {
        TransportAddress ta = new TransportAddress(InetAddress.getByName(hostname), 3478, Transport.UDP);
        agent.addCandidateHarvester(new StunCandidateHarvester(ta));
    } catch (Exception e) { Log.e("ICE","Failed to add candidate", e); }
}


try {
    IceMediaStream stream = agent.createMediaStream("audio");
    IceMediaStream streamVideo = agent.createMediaStream("video");
    int port = 5000;
    agent.createComponent(stream, Transport.UDP, port, port, port + 100);
    agent.createComponent(streamVideo, Transport.UDP, port+100, port+100, port + 200);
} catch (Exception ex){
    Log.e("ICE","Failed to create component",ex);
}

そのコードは非常に単純で、セッションの説明を作成してから文字列から再作成するだけなので、問題は発生しませんよね? 悲しいことに、ここに行きます：

SDP: v=0
o=phone 1235435654721342455 3521512531241 IN IP4 123.45.67.89
s=-
t=0 0
a=ice-options:trickle
a=ice-ufrag:datbs1al0pu6l0
a=ice-pwd:74gk6of5iedc4h5uug7nvmrdis
m=audio 30783 RTP/AVP 0
c=IN 123.45.67.89 IP4
a=mid:audio
a=candidate:1 1 udp 2130706431 fe80::4adb:50ff:fe47:f8ab 5000 typ host
a=candidate:2 1 udp 2130706431 192.168.1.104 5000 typ host
a=candidate:3 1 udp 1677724415 123.45.67.89 30783 typ srflx raddr 192.168.1.104 rport 5000
m=video 30784 RTP/AVP 0
c=IN 123.45.67.89 IP4
a=mid:video
a=candidate:1 1 udp 2130706431 fe80::4adb:50ff:fe47:f8ab 5100 typ host
a=candidate:2 1 udp 2130706431 192.168.1.104 5100 typ host
a=candidate:3 1 udp 1677724415 123.45.67.89 30784 typ srflx raddr 192.168.1.104 rport 5100

これは最初の Log.e であり、.parse() を実行した後:

Failed to init session description
    java.text.ParseException: o=phone 1235435654721342455 3521512531241 IN IP4 123.45.67.89 (at offset 7)
            at gov.nist.javax.sdp.parser.OriginFieldParser.originField(OriginFieldParser.java:103)
            at gov.nist.javax.sdp.parser.OriginFieldParser.parse(OriginFieldParser.java:108)
            at gov.nist.javax.sdp.parser.SDPAnnounceParser.parse(SDPAnnounceParser.java:113)
            at com.example.app.CallActivity$1.run(CallActivity.java:105)
            at java.lang.Thread.run(Thread.java:831)
java.text.ParseException: o=phone 1235435654721342455 3521512531241 IN IP4 123.45.67.89 (at offset 7)
  at gov.nist.javax.sdp.parser.OriginFieldParser.originField(OriginFieldParser.java:103)
  at gov.nist.javax.sdp.parser.OriginFieldParser.parse(OriginFieldParser.java:108)
  at gov.nist.javax.sdp.parser.SDPAnnounceParser.parse(SDPAnnounceParser.java:113)
  at com.example.app.CallActivity$1.run(CallActivity.java:105)
  at java.lang.Thread.run(Thread.java:831)

何か助けはありますか？私はすでに何時間もこれに苦労しており、解決策が見つかりません...

編集:長い間理由を見つけた後、エラーがLexerCore.javafromgov.nist.javax.sdp.parserにあるようです、間違ったコンストラクターを呼び出すためMap<Token> currentLexer割り当てられないため、問題は、このようなファイルにパッチを適用するにはどうすればよいですか?OriginParseField.javacurrentLexernull

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