完善语音对讲级联

648540858

2023-03-21 82adc0cb23f3ee47322e78889cdaba57e9309000

 src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/InviteResponseProcessor.java

@@ -1,22 +1,24 @@
package com.genersoft.iot.vmp.gb28181.transmit.event.response.impl;

import com.genersoft.iot.vmp.conf.SipConfig;
import com.genersoft.iot.vmp.gb28181.SipLayer;
import com.genersoft.iot.vmp.gb28181.session.VideoStreamSessionManager;
import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorObserver;
import com.genersoft.iot.vmp.gb28181.transmit.SIPSender;
import com.genersoft.iot.vmp.gb28181.transmit.cmd.SIPRequestHeaderProvider;
import com.genersoft.iot.vmp.gb28181.transmit.event.response.SIPResponseProcessorAbstract;
import gov.nist.javax.sip.ResponseEventExt;
import gov.nist.javax.sip.stack.SIPDialog;
import gov.nist.javax.sip.message.SIPResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.sdp.SdpFactory;
import javax.sdp.SdpParseException;
import javax.sdp.SessionDescription;
import javax.sip.InvalidArgumentException;
import javax.sip.ResponseEvent;
import javax.sip.SipException;
import javax.sip.address.SipURI;
import javax.sip.header.CSeqHeader;
import javax.sip.message.Request;
import javax.sip.message.Response;
import java.text.ParseException;
@@ -34,14 +36,18 @@
   private final String method = "INVITE";

   @Autowired
   private SIPProcessorObserver sipProcessorObserver;


   @Autowired
   private SipLayer sipLayer;

   @Autowired
   private SipConfig config;

   private SIPSender sipSender;

   @Autowired
   private SIPProcessorObserver sipProcessorObserver;
   private SIPRequestHeaderProvider headerProvider;


   @Override
   public void afterPropertiesSet() throws Exception {
@@ -49,8 +55,7 @@
      sipProcessorObserver.addResponseProcessor(method, this);
   }

   @Autowired
   private VideoStreamSessionManager streamSession;


   /**
    * 处理invite响应
@@ -60,8 +65,9 @@
    */
   @Override
   public void process(ResponseEvent evt ){
      logger.debug("接收到消息：" + evt.getResponse());
      try {
         Response response = evt.getResponse();
         SIPResponse response = (SIPResponse)evt.getResponse();
         int statusCode = response.getStatusCode();
         // trying不会回复
         if (statusCode == Response.TRYING) {
@@ -70,24 +76,29 @@
         // 下发ack
         if (statusCode == Response.OK) {
            ResponseEventExt event = (ResponseEventExt)evt;
            SIPDialog dialog = (SIPDialog)evt.getDialog();
            CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
            Request reqAck = dialog.createAck(cseq.getSeqNumber());
            SipURI requestURI = (SipURI) reqAck.getRequestURI();
            try {
               requestURI.setHost(event.getRemoteIpAddress());
            } catch (ParseException e) {
               e.printStackTrace();

            String contentString = new String(response.getRawContent());
            // jainSip不支持y=字段， 移除以解析。
            int ssrcIndex = contentString.indexOf("y=");
            // 检查是否有y字段
            SessionDescription sdp;
            if (ssrcIndex >= 0) {
               //ssrc规定长度为10字节，不取余下长度以避免后续还有“f=”字段
               String substring = contentString.substring(0, contentString.indexOf("y="));
               sdp = SdpFactory.getInstance().createSessionDescription(substring);
            } else {
               sdp = SdpFactory.getInstance().createSessionDescription(contentString);
            }
            requestURI.setPort(event.getRemotePort());
            reqAck.setRequestURI(requestURI);
            logger.info("[回复ack] {}-> {}:{} ",requestURI, event.getRemoteIpAddress(), event.getRemotePort());
            // 查看是否是来自设备的，此是回复

            dialog.sendAck(reqAck);
            SipURI requestUri = sipLayer.getSipFactory().createAddressFactory().createSipURI(sdp.getOrigin().getUsername(), event.getRemoteIpAddress() + ":" + event.getRemotePort());
            Request reqAck = headerProvider.createAckRequest(response.getLocalAddress().getHostAddress(), requestUri, response);

            logger.info("[回复ack] {}-> {}:{} ", sdp.getOrigin().getUsername(), event.getRemoteIpAddress(), event.getRemotePort());
            sipSender.transmitRequest( response.getLocalAddress().getHostAddress(), reqAck);
         }
      } catch (InvalidArgumentException | SipException e) {
         e.printStackTrace();
      } catch (InvalidArgumentException | ParseException | SipException | SdpParseException e) {
         logger.info("[点播回复ACK]，异常：", e );
      }
   }