【发布时间】：2014-09-11 22:42:54
【问题描述】：
有人知道如何做 Ice4j 的 TURN 部分吗？我已经设法对其进行了编码，以便它在手机连接 WiFi 时工作，但在移动网络上时不能工作。
我通过 TCP 发送代理信息，然后手动建立连接，而不是使用信令过程。 TCP 连接已经工作正常，所以我认为不是 TCP 问题。也许我构建代理错误？
我知道如果 STUN 不起作用，您应该使用 TURN 服务器，我提供了大量公共 TURN 服务器，但我可能遗漏了一些东西。也许数据包没有正确发送？
错误：（大多数情况下无法发送 ALLOCATE-REQUEST(0X3)）
Sep 11, 2014 3:36:09 PM org.ice4j.ice.Agent createMediaStream
INFO: Create media stream for data
Sep 11, 2014 3:36:09 PM org.ice4j.ice.Agent createComponent
INFO: Create component data.1
Sep 11, 2014 3:36:09 PM org.ice4j.ice.Agent gatherCandidates
INFO: Gather candidates for component data.1
Sep 11, 2014 3:36:09 PM org.ice4j.ice.harvest.HostCandidateHarvester harvest
INFO: End candidate harvest within 160 ms, for org.ice4j.ice.harvest.HostCandidateHarvester, component: 1
Sep 11, 2014 3:36:09 PM org.ice4j.ice.harvest.StunCandidateHarvest sendRequest
INFO: Failed to send ALLOCATE-REQUEST(0x3)[attrib.count=3 len=32 tranID=0x9909DC6648016A67FDD4B2D8] through /192.168.0.8:5001/udp to stun2.l.google.com:19302:5001/udp
Sep 11, 2014 3:36:12 PM org.ice4j.ice.ConnectivityCheckClient processTimeout
INFO: timeout for pair: /fe80:0:0:0:c8ce:5a17:c339:cc40%4:5001/udp -> /fe80:0:0:0:14e8:f3ff:fef3:6a21:6001/udp (data.1), failing.
Sep 11, 2014 3:36:12 PM org.ice4j.ice.ConnectivityCheckClient processTimeout
INFO: timeout for pair: /fe80:0:0:0:380d:2a4c:b350:eea8%8:5001/udp -> /fe80:0:0:0:14e8:f3ff:fef3:6a21:6001/udp (data.1), failing.
Sep 11, 2014 3:36:12 PM org.ice4j.ice.ConnectivityCheckClient processTimeout
INFO: timeout for pair: /192.168.0.8:5001/udp -> /100.64.74.58:6001/udp (data.1), failing.
Sep 11, 2014 3:36:12 PM org.ice4j.ice.ConnectivityCheckClient processTimeout
INFO: timeout for pair: /192.168.0.8:5001/udp -> /100.64.74.58:6001/udp (data.1), failing.
Sep 11, 2014 3:36:12 PM org.ice4j.ice.ConnectivityCheckClient updateCheckListAndTimerStates
INFO: CheckList will failed in a few seconds if nosucceeded checks come
Sep 11, 2014 3:36:17 PM org.ice4j.ice.ConnectivityCheckClient$1 run
INFO: CheckList for stream data FAILED
Sep 11, 2014 3:36:17 PM org.ice4j.ice.Agent checkListStatesUpdated
INFO: ICE state is FAILED
脚本（服务器端和客户端都有类似的代码）：
Agent agent = new Agent();
agent.setControlling(false);
StunCandidateHarvester stunHarv = new StunCandidateHarvester(new TransportAddress("sip-communicator.net", port, Transport.UDP));
StunCandidateHarvester stun6Harv = new StunCandidateHarvester(new TransportAddress("ipv6.sip-communicator.net", port, Transport.UDP));
agent.addCandidateHarvester(stunHarv);
agent.addCandidateHarvester(stun6Harv);
String[] hostnames = new String[] { "130.79.90.150",
"2001:660:4701:1001:230:5ff:fe1a:805f",
"jitsi.org",
"numb.viagenie.ca",
"stun01.sipphone.com",
"stun.ekiga.net",
"stun.fwdnet.net",
"stun.ideasip.com",
"stun.iptel.org",
"stun.rixtelecom.se",
"stun.schlund.de",
"stun.l.google.com:19302",
"stun1.l.google.com:19302",
"stun2.l.google.com:19302",
"stun3.l.google.com:19302",
"stun4.l.google.com:19302",
"stunserver.org",
"stun.softjoys.com",
"stun.voiparound.com",
"stun.voipbuster.com",
"stun.voipstunt.com",
"stun.voxgratia.org",
"stun.xten.com",};
LongTermCredential longTermCredential = new LongTermCredential("guest", "anon");
for (String hostname : hostnames)
agent.addCandidateHarvester(new TurnCandidateHarvester(new TransportAddress(hostname, port, Transport.UDP), longTermCredential));
//Build a stream for agent
IceMediaStream stream = agent.createMediaStream("data");
try {
Component c = agent.createComponent(stream, Transport.UDP, port, port, port+100 );
String response = "";
List<LocalCandidate> remoteCandidates = c.getLocalCandidates();
for(Candidate<?> can : remoteCandidates) {
response += "||" + can.toString();
}
response = "Video||" + agent.getLocalUfrag() + "||" + agent.getLocalPassword() + "||" + c.getDefaultCandidate().toString() + response;
System.out.println("Server >>> " + response);
DataOutputStream outStream = new DataOutputStream(client.getOutputStream());
outStream.write(response.getBytes("UTF-8"));
outStream.flush();
List<IceMediaStream> streams = agent.getStreams();
for(IceMediaStream localStream : streams) {
List<Component> localComponents = localStream.getComponents();
for(Component localComponent : localComponents) {
for(int i = 3; i < info.length; i++) {
String[] detail = info[i].split(" "); //0: Foundation
//1: Component ID
//2: Transport
//3: Priority #
//4: Address (Needed with Port # to create Transport Address)
//5: Port # (Needed with Address to create Transport Address)
//6: -filler: "Type" is next field-
//7: Candidate Type
String[] foundation = detail[0].split(":"); //Turn "Candidate:#" -> "Candidate" and "#". We use "#"
localComponent.addRemoteCandidate(new RemoteCandidate(new TransportAddress(detail[4], Integer.valueOf(detail[5]), Transport.UDP), c, CandidateType.HOST_CANDIDATE, foundation[1], Long.valueOf(detail[3]), null));
}
String[] defaultDetail = info[3].split(" ");
String[] defaultFoundation = defaultDetail[0].split(":");
localComponent.setDefaultRemoteCandidate(new RemoteCandidate(new TransportAddress(defaultDetail[4], Integer.valueOf(defaultDetail[5]), Transport.UDP), c, CandidateType.HOST_CANDIDATE, defaultFoundation[1], Long.valueOf(defaultDetail[3]), null));
}
localStream.setRemoteUfrag(info[1]);
localStream.setRemotePassword(info[2]);
}
agent.startConnectivityEstablishment();
System.out.println("ICEServer <><><> Completed");
【问题讨论】：
-
我开始认为 4G 不允许向任一方向发送 UDP 数据包，这会导致失败...
-
不确定输出如何与代码匹配，因为代码显示使用 TurnCandidateHarvester 而不是 StunCandidateHarvester 用于看起来像 Stun 服务器的东西。看起来 google stun 服务器是端口 19302，而不是 url 的一部分，不太确定....
-
我尝试了 UDP 看看它是否可以工作，但我认为我也遇到了问题，但我还没有深入研究它。您应该知道 Ice4J 也有 TCP 方法。我自己很好奇。如果您有兴趣，请告诉我。
-
进程的 TCP 部分工作，并且在该路径上建立了连接，但 UDP 没有。如果任一测试失败，我不确定 Ice4J 测试是否失败，但我认为这就是发生的事情。你有什么建议？
-
通常 ICE 使用 UDP。有时它们会被阻止，因此您可以使用 TCP 传输蜂窝网络肯定允许通过的视频/音频。我注意到 TCP 协议似乎没有完成并抛出错误....您使用的是 TURN 服务器吗？当我认为你想要 STUN 时，你的代码正在调用 TURN 服务器......
标签： java android sockets stun ice4j