Question

您好我目前正在使用restcomm-sip-servlets-4.0.75-apache-tomcat-8.0.26。我有问题从http请求线程取消正在进行的请求。我注意到，当我使用auth标头创建一个新请求时，似乎只会发生此问题：

    AuthInfo authInfo = sipFactory.createAuthInfo();
            authInfo.addAuthInfo(
                    response.getStatus(), 
                    realm,myauth,password); 


            SipServletRequest challengeRequest = response.getSession().createRequest(
                    response.getRequest().getMethod());
        (String)session.getAttribute("FirstPartyContent");
            if(session.getAttribute("FirstPartyContent") !=null){
                challengeRequest.setContent(session.getAttribute("FirstPartyContent"),(String) session.getAttribute("FirstPartyContentType"));
            }
            challengeRequest.addAuthHeader(response, authInfo);

            challengeRequest.getFrom().setDisplayName(auth.getDisplayName());

            session.removeAttribute("original");
            session.setAttribute("original", challengeRequest);
            challengeRequest.send();

当请求通过http接口进入时，我会像这样查找SipApplicationSession：

        SipSessionsUtil sipSessionsUtil = 
                (SipSessionsUtil) session.getServletContext().
                    getAttribute("javax.servlet.sip.SipSessionsUtil");
     logger.info("found servlet contxt for sipsession util");

     SipApplicationSession tobecancelledsess = sipSessionsUtil.getApplicationSessionById(sessionapplicationID);

然后我从会话请求中创建一个取消请求，如下所示：

SipServletRequest req =（SipServletRequest）tobecancelledsess.getAttribute（“original”）; drequest = req.createCancel（）;

虽然远程服务器使用to-tag响应临时，但我得到：

2017-04-28 16：26：04,470 DEBUG [SipServletMessageImpl]（http-bio-8443-exec-1）事务null transactionId = null transactionType false 2017-04-28 16：26：04,470 DEBUG [SipServletMessageImpl]（http-bio-8443-exec-1）事务null transactionId = null transactionType false java.lang.IllegalStateException：找不到客户端事务！空值在org.mobicents.servlet.sip.message.SipServletRequestImpl.createCancel（SipServletRequestImpl.java:258）在org.example.servlet.sip.CallContainer.CancelSession（CallContainer.java:319）在org.example.servlet.sip.CallContainer.CheckCancel（CallContainer.java:274） at org.example.servlet.sip.SimpleWebServlet.doPut（SimpleWebServlet.java:360） at org.example.servlet.sip.SimpleWebServlet.service（SimpleWebServlet.java:149）在javax.servlet.http.HttpServlet.service（HttpServlet.java:729）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:291）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:206）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:239）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:206）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:219）在org.mobicents.servlet.sip.startup.SipStandardContextValve.invoke（SipStandardContextValve.java:262）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:502）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:142） at org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:79）在org.apache.catalina.valves.AbstractAccessLogValve.invoke（AbstractAccessLogValve.java:616）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:88）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:518）在org.apache.coyote.http11.AbstractHttp11Processor.process（AbstractHttp11Processor.java:1091） at org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process（AbstractProtocol.java:673） at org.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run（JIoEndpoint.java:279）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:615） at org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:745）

我注意到当我从servlet类中取消请求时，我没有这个问题。

Answer 1

我发现在这样的响应中设置上下文属性可以解决我的问题：

if (resp.getStatus() == SipServletResponse.SC_RINGING){
            SipSession session = resp.getSession();
 resp.getSession().getServletContext().setAttribute("ringing",true);
}

然后我抓住像这样的会话上下文

SipServletRequest req = (SipServletRequest)tobecancelledsess.getAttribute("original");
    Boolean ringed =  (Boolean ) tobecancelledsess.getServletContext().getAttribute("ringing");
    if(ringed == Boolean.True)
     drequest = req.createCancel();

最终您需要使用send（）;

发送取消请求

如何同步Servlet客户端事务？

1 个答案: