android - 如何在 jainsip android 中创建并从客户端向服务器发送 Bye 消息？

Question

我在 Mobicents restcomm-android-sdk 中尝试了 jainsip 示例。它对我有用，但我无法从客户端正确创建再见消息。

I created a Bye Message class like this

public class Bye {

public Request MakeRequest(SipManager sipManager) throws ParseException,
        InvalidArgumentException {

    AddressFactory addressFactory = sipManager.addressFactory;
    SipProvider sipProvider = sipManager.sipProvider;
    MessageFactory messageFactory = sipManager.messageFactory;
    HeaderFactory headerFactory = sipManager.headerFactory;
    // Create addresses and via header for the request
    Address fromAddress = addressFactory.createAddress("sip:"
            + sipManager.getSipProfile().getSipUserName() + "@"
            + sipManager.getSipProfile().getRemoteIp());
    fromAddress.setDisplayName(sipManager.getSipProfile().getSipUserName());
    Address toAddress = addressFactory.createAddress("sip:"
            + sipManager.getSipProfile().getSipUserName() + "@"
            + sipManager.getSipProfile().getRemoteIp());
    toAddress.setDisplayName(sipManager.getSipProfile().getSipUserName());

    Address contactAddress = sipManager.createContactAddress();
    ArrayList<ViaHeader> viaHeaders = sipManager.createViaHeader();
    URI requestURI = addressFactory.createAddress(
            "sip:" + sipManager.getSipProfile().getRemoteEndpoint())
            .getURI();
    // Build the request
    CallIdHeader callIdHeader = sipManager.sipProvider.;
    final Request request = messageFactory.createRequest(requestURI,
            Request.BYE, sipProvider.getNewCallId(),
            headerFactory.createCSeqHeader(1l, Request.BYE),
            headerFactory.createFromHeader(fromAddress, "c3ff411e"),
            headerFactory.createToHeader(toAddress, null), viaHeaders,
            headerFactory.createMaxForwardsHeader(70));

    // Add the contact header
    request.addHeader(headerFactory.createContactHeader(contactAddress));
    ExpiresHeader eh = headerFactory.createExpiresHeader(300);
    request.addHeader(eh);
    // Print the request
    System.out.println(request.toString());
    return request;
    // Send the request --- triggers an IOException
    // sipProvider.sendRequest(request);
    // ClientTransaction transaction = sipProvider
    // .getNewClientTransaction(request);
    // Send the request statefully, through the client transaction.
    // transaction.sendRequest();

}
}

从 SipManager 类调用它

public void disconnectCall() throws NotInitializedException {
    // TODO Auto-generated method stub
    if (!initialized)
        throw new NotInitializedException("Sip Stack not initialized");
    this.sipManagerState = SipManagerState.BYE;
    Bye byeRequest = new Bye();
    Request r=null ;
    try{
    r = byeRequest.MakeRequest(this);//byeRequest.MakeRequest(SipManager.this);

        final ClientTransaction transaction = this.sipProvider
                .getNewClientTransaction(r);
        Thread thread = new Thread() {
            public void run() {
                try {
                    transaction.sendRequest();
                } catch (SipException e) {
                    e.printStackTrace();
                }
            }
        };
        thread.start();
    } catch (TransactionUnavailableException e) {
        e.printStackTrace();
    }catch (InvalidArgumentException e) {
        e.printStackTrace();
    } catch (ParseException e) {
        e.printStackTrace();
    }

}

我收到 481 错误代码作为响应。我想我错过了再见消息中的当前 callid 字段。我已经搜索过它但没有从 sipmanager 类中找到。请帮助。

Answer 1

尼丁，

BYE 消息始终在 SIP 对话中，因此您不必从头开始创建新消息。相反，您只需要获取要终止的对话，从中创建 BYE 类型的请求并发送它。 JAIN 会处理剩下的事情。

例如，您可以查看 Mobicents restcomm-android-sdk 存储库中的代码，方法 sendByeClient():

https://github.com/Mobicents/restcomm-android-sdk/blob/master/sipua/src/main/java/org/mobicents/restcomm/android/sipua/impl/SipManager.java#L931

另请记住，JAIN SIP 示例已被使用 Restcomm Android 客户端 SDK 的 Messenger 示例废弃，后者提供了更简单的 API。这是它的代码供您引用:

https://github.com/Mobicents/restcomm-android-sdk/tree/master/Examples/restcomm-messenger