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我正在使用 libjingle 编写一些代码，但第一步遇到了麻烦：登录到 XMPP 服务器。我的代码基于goog 的示例代码和 pcp 示例代码。这段代码让我有点困惑，因为它似乎只运行一个线程，所以我意识到这是一个非常基本的问题。

无论如何，这是我的代码的主要内容：

    talk_base::PhysicalSocketServer ss;
    talk_base::AutoThread main_thread(&ss);
    buzz::Jid jid( xmppUsername + "@" + xmppHost );
    if (!jid.IsValid() || jid.node() == "")
        throw "Invalid JID. JIDs should be in the form user@domain" ;

    buzz::TlsOptions tls = buzz::TLS_ENABLED;

    buzz::XmppClientSettings xcs;
    xcs.set_user(jid.node());
    xcs.set_host(jid.domain());
    xcs.set_resource("pcp");
    xcs.set_pass(talk_base::CryptString(pass));
    xcs.set_allow_plain(true);
    xcs.set_server(talk_base::SocketAddress(xmppHost.c_str(), 5222));
    xcs.set_use_tls(tls);

    // Log in.
    CustomXmppPump pump;
    pump.client()->SignalLogInput.connect(&debug_log_, &DebugLog::Input);
    pump.client()->SignalLogOutput.connect(&debug_log_, &DebugLog::Output);
    pump.DoLogin(xcs, new XmppSocket(tls), 0);

    // Wait until login succeeds.
    std::vector<uint32> ids;
    ids.push_back(MSG_LOGIN_COMPLETE);
    ids.push_back(MSG_LOGIN_FAILED);
    if (MSG_LOGIN_FAILED == Loop(ids))
        throw "Failed to connect";

    ...

    // Runs the current thread until a message with the given ID is seen.
    uint32 Loop(const std::vector<uint32>& ids) {
      talk_base::Message msg;
      while (talk_base::Thread::Current()->Get(&msg)) {
        cout << "received message: " << msg.message_id << endl;
        if (msg.phandler == NULL) {
          if (std::find(ids.begin(), ids.end(), msg.message_id) != ids.end())
            return msg.message_id;
          std::cout << "orphaned message: " << msg.message_id << endl;
          continue;
        }
        cout << "1: " << msg.message_id <<  " : " << msg.ts_sensitive << endl;
        talk_base::Thread::Current()->Dispatch(&msg);
        cout << "2: " << msg.message_id << endl;
      }
      return 0;
    }

运行时，它输出：

连接...
收到的消息：0
1:0:0
[004:722] 解析 PhysicalSocket::Connect 中的地址
2：0
收到的消息：0
1:0:0
2：0

而且只是挂起，很明显它卡在 Get(&msg) 调用上。

我应该注意我的服务器使用 DNS SRV 记录并且可以与其他客户端正常工作——也许我只需要自己解析 SRV？

谢谢你的帮助！

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1 回答 1

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T answer my own question:

According to this bug, and my own testing, dns SRV is not supported.

Moreover, according to this bug, the docs are very out of date, and the sample code I was using are not the recommended sample code.

Nevertheless, I was able to make some progress logging on by setting the domain in this call:

xcs.set_server(talk_base::SocketAddress(xmppHost.c_str(), 5222));

to the values of the actual server hosting the service. I thought I had tried this already, but it didn't work because I had actually changed this:

xcs.set_host(jid.domain());

Oops.

于 2012-09-14T16:21:01.493 回答