如何拨打SIP电话

Question

我想在我的 java 应用程序中构造一个 telephone-caller。为此，我使用了 JAIN-SIP 库。在第一个 INVITE 之后，系统需要 Proxy-Authentication。第二个邀请是在 "AuthenticationHelperImpl.class":https://gitorious.org/0xdroid/external_nist-sip/source/1e0f37693341071f316852c8e05a08deef2b7fc4:java/gov/nist/javax/sip/clientauthutils/AuthenticationHelperImpl.java#L311 的帮助下构建的，包括 Proxy-Authentication header 和 lloks like:

INVITE sip:+11111111111@fpbx.de;maddr=fpbx.de SIP/2.0
Call-ID: 1c609509a43b721ab11c396c1e6ea9e7@192.168.17.107
CSeq: 2 INVITE
From: "77735hk6iu" <sip:77735hk6iu@fpbx.de>
To: "+111111111111111" <sip:+11111111111@fpbx.de>
Via: SIP/2.0/UDP 192.168.17.107:34567;rport;branch=z9hG4bK-383337-5bc4fd6b7a616843fce9eaa243bcb10e
Max-Forwards: 70
Contact: <sip:77735hk6iu@192.168.17.107:5060>
Content-Type: application/sdp
Proxy-Authorization: Digest       username="77735hk6iu",realm="fpbx.de",nonce="VLaIxVS2h5muPS30F2zLdXHjup6ELyen",uri="sip:+111111111111@fpbx.de:5060;maddr=fpbx.de",response="47ea578c6b01c99fd3ed2b41c60983df"
Content-Length: 61

v=0
o=- 130565705777141827 1 IN IP4 192.168.17.107
s=call

之后我收到了代码 100 消息 ("your call is very important for us")，然后是 408 代码消息 ("Request Timeout")。

我做了什么来改善这种情况：

尝试了不同的 phone 数字格式：004930208488480， 04930208488480, 049, 0049, sdfhajfkhsk。对于所有这些数字，我成为消息上的相同组合。
试图在请求 uri 中使用端口
试图从请求 uri 中删除 maddr。
尝试使用编码设置来填充消息 body。
通过 header

如果你现在做错了，请帮助我。提前谢谢你。

Answer 1

我想，也许你的Proxy-Authorizationheader是错误的。也许你失算了。我想分享我的决心。

authUser 是您的电话号码。 (例如: 77735hk6iu ) authPass 是您的用户密码。 msg 是您的邀请请求。(Headers !)

AccountManagerImpl accountManagerImp = new AccountManagerImpl(authUser, AuthPass);
        AuthenticationHelperImpl authenticationHelperImpl = new AuthenticationHelperImpl(accountManagerImp);

        try {
           this.authentication = authenticationHelperImpl.handleChallenge(msg, (SIPClientTransaction)trans);

AuthenticationHelperImple.java Class :

   public AuthorizationHeader handleChallenge(Response challenge, ClientTransaction challengedTransaction) throws SipException {


  SIPRequest challengedRequest = ((SIPRequest) challengedTransaction.getRequest());

  ListIterator authHeaders = null;

  if (challenge.getStatusCode() == Response.UNAUTHORIZED) {
     authHeaders = challenge.getHeaders(WWWAuthenticateHeader.NAME);
  }
  else {
     if (challenge.getStatusCode() == Response.PROXY_AUTHENTICATION_REQUIRED) {
        authHeaders = challenge.getHeaders(ProxyAuthenticateHeader.NAME);
     }
     else {
        throw new IllegalArgumentException("Unexpected status code ");
     }
  }

  if (authHeaders == null) {
     throw new IllegalArgumentException("Could not find WWWAuthenticate or ProxyAuthenticate headers");
  }

  WWWAuthenticateHeader authHeader = null;
  while (authHeaders.hasNext()) {
     authHeader = (WWWAuthenticateHeader) authHeaders.next();
     String realm = authHeader.getRealm();

     this.uri = challengedRequest.getRequestURI();

     this.requestMethod = challengedRequest.getMethod();
     this.requestBody = (challengedRequest.getContent() == null) ? "" : new String(challengedRequest.getRawContent());

     if (this.accountManager instanceof SecureAccountManager) {
        UserCredentialHash credHash = ((SecureAccountManager) this.accountManager).getCredentialHash(challengedTransaction,
                                                                                                     realm);
        if (credHash == null) {
           logger.logDebug("Could not find creds");
           throw new SipException("Cannot find user creds for the given user name and realm");
        }

        this.authorizationHeader = this.getAuthorization(requestMethod, uri.toString(), requestBody, authHeader, credHash);
     }
     else {
        UserCredentials userCreds = ((AccountManager) this.accountManager).getCredentials(challengedTransaction, realm);
        if (userCreds == null) {
           throw new SipException("Cannot find user creds for the given user name and realm");
        }
        // sipDomain = userCreds.getSipDomain();
        // we haven't yet authenticated this realm since we were
        // started.

       this.authorizationHeader = this.getAuthorization(requestMethod, uri.toString(), requestBody, authHeader, userCreds);
     }
  }

  return this.authorizationHeader;

}

获取授权函数：

 public AuthorizationHeader getAuthorization(String method,
                                           String uri,
                                           String requestBody,
                                           WWWAuthenticateHeader authHeader,
                                           UserCredentials userCredentials) throws SecurityException {
  String response = null;
  String qopList = authHeader.getQop();
  String qop = (qopList != null) ? "auth" : null;
  String nc_value = "00000001";
  String cnonce = "xyz";

  try {
     response = MessageDigestAlgorithm.calculateResponse(authHeader.getAlgorithm(),
                                                        userCredentials.getUserName(), authHeader.getRealm(),userCredentials.getPassword(), authHeader.getNonce(), nc_value, // JvB added
                                                 cnonce, // JvB added
                                                 method, uri, requestBody, qop,logger);
  }
  catch (NullPointerException exc) {
     throw new SecurityException("The received authenticate header was malformatted: " + exc.getMessage());
  }

  AuthorizationHeader authorization = null;
  try {
      if (authHeader instanceof ProxyAuthenticateHeader) {
         if (this.headerFactory != null) {
            authorization = headerFactory.createProxyAuthorizationHeader(authHeader.getScheme());
         }
         else {
            authorization = new ProxyAuthorization();
            authorization.setScheme(authHeader.getScheme()); 
         }
      } 
      else {
         if (this.headerFactory != null) {
            authorization = headerFactory.createAuthorizationHeader(authHeader.getScheme());
         }
         else {
            authorization = new Authorization();
            authorization.setScheme(authHeader.getScheme());
         }
      }

      authorization.setUsername(userCredentials.getUserName());
      authorization.setRealm(authHeader.getRealm());
      authorization.setNonce(authHeader.getNonce());
      authorization.setParameter("uri", uri);
      authorization.setResponse(response);
      if (authHeader.getAlgorithm() != null) {
          authorization.setAlgorithm(authHeader.getAlgorithm());
      }

      if (authHeader.getOpaque() != null) {
          authorization.setOpaque(authHeader.getOpaque());
      }

      // jvb added
      if (qop != null) {
          authorization.setQop(qop);
          authorization.setCNonce(cnonce);
          authorization.setNonceCount(Integer.parseInt(nc_value));
      }

      authorization.setResponse(response);

  } catch (ParseException ex) {
      throw new RuntimeException("Failed to create an authorization header!");
  }

  return authorization;

}

最后，您的 this.authentication 变量是 ProxyAuthorizationHeader。您必须将 this.authentication 放入您的 INVITE 消息中。然后，您会将 SipMessage 从事务或对话发送到 JAIN-SIP 堆栈。

祝你好运！

Answer 2

当从请求 URI 和代理验证中删除 "maddr=fpbx.de" 时，问题得到了部分解决。乌里

fpr 这是一个使用了布尔参数的 handleCahllenge 方法：

inviteTid = authenticationHelper.handleChallenge(response, tid, sipProvider, 15, **true**);

但我仍然不知道如何获得自发电话号码。

Answer 3

第100条消息是hop-by-hop，也就是说只是下一跳收到了你的请求。其他消息通常为 end-to-end（因此，如果您收到 180 振铃，这通常意味着被呼叫的端点发送了 180）。当其中一个跃点发送了 INVITE 但从未收到响应时，通常会出现 408（当您的 SIP 堆栈在合理的时间范围内未收到临时响应时，可能会在内部生成该响应——默认情况下通常约为 32 秒SIP 定时器）。

我不知道您的网络设置，但该邮件中有几个私有 IP（属于 192.168.x.x 种类）。如果我不得不猜测，你的第一跳是将 100 发送回它接收它的 IP/port，但下一个响应是在 Via headers 之后（应该如此），以及你之后的那一跳不遵守 rport 参数，因此响应丢失。或者，您的 NAT 配置不当，并且过快地关闭了它为 INVITE 创建的漏洞。

如果您的网络边缘有代理发送此消息，则它要么在消息上放置了错误的 Via headers（可能使用内部 IP 而不是外部 IP），要么它正在将 INVITE 发送到错误的地方（导致它永远得不到响应），而 408 就是来自它。

如何拨打SIP电话

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