优化sip消息

648540858

2022-09-09 221f99c764b51c3cd284c6e5a41492c26c5c7ffc

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

@@ -1,10 +1,10 @@
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.event.response.SIPResponseProcessorAbstract;
import com.genersoft.iot.vmp.gb28181.utils.SipUtils;
import gov.nist.javax.sip.ResponseEventExt;
import gov.nist.javax.sip.stack.SIPDialog;
import org.slf4j.Logger;
@@ -12,11 +12,14 @@
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.sip.InvalidArgumentException;
import javax.sip.ResponseEvent;
import javax.sip.SipException;
import javax.sdp.SdpFactory;
import javax.sdp.SdpParseException;
import javax.sdp.SessionDescription;
import javax.sip.*;
import javax.sip.address.Address;
import javax.sip.address.SipURI;
import javax.sip.header.CSeqHeader;
import javax.sip.header.UserAgentHeader;
import javax.sip.message.Request;
import javax.sip.message.Response;
import java.text.ParseException;
@@ -31,17 +34,19 @@
public class InviteResponseProcessor extends SIPResponseProcessorAbstract {

   private final static Logger logger = LoggerFactory.getLogger(InviteResponseProcessor.class);
   private String method = "INVITE";
   private final String method = "INVITE";

   @Autowired
   private SipLayer sipLayer;

   @Autowired
   private SipConfig config;

   private VideoStreamSessionManager streamSession;

   @Autowired
   private SIPProcessorObserver sipProcessorObserver;

   @Autowired
   private SipConfig sipConfig;

   @Autowired
   private SipFactory sipFactory;

   @Override
   public void afterPropertiesSet() throws Exception {
@@ -49,8 +54,7 @@
      sipProcessorObserver.addResponseProcessor(method, this);
   }

   @Autowired
   private VideoStreamSessionManager streamSession;


   /**
    * 处理invite响应
@@ -74,6 +78,19 @@
            CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
            Request reqAck = dialog.createAck(cseq.getSeqNumber());
            SipURI requestURI = (SipURI) reqAck.getRequestURI();
            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.setUser(sdp.getOrigin().getUsername());
            try {
               requestURI.setHost(event.getRemoteIpAddress());
            } catch (ParseException e) {
@@ -81,16 +98,21 @@
            }
            requestURI.setPort(event.getRemotePort());
            reqAck.setRequestURI(requestURI);
            logger.info("向 " + event.getRemoteIpAddress() + ":" + event.getRemotePort() + "回复ack");
            SipURI sipURI = (SipURI)dialog.getRemoteParty().getURI();
            String deviceId = requestURI.getUser();
            String channelId = sipURI.getUser();
            UserAgentHeader userAgentHeader = SipUtils.createUserAgentHeader(sipFactory);
            reqAck.addHeader(userAgentHeader);
            Address concatAddress = sipFactory.createAddressFactory().createAddress(sipFactory.createAddressFactory().createSipURI(sipConfig.getId(), sipConfig.getIp()+":"+sipConfig.getPort()));
            reqAck.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress));
            logger.info("[回复ack] {}-> {}:{} ",requestURI, event.getRemoteIpAddress(), event.getRemotePort());

            dialog.sendAck(reqAck);

         }
      } catch (InvalidArgumentException | SipException e) {
         e.printStackTrace();
      } catch (ParseException e) {
         throw new RuntimeException(e);
      } catch (SdpParseException e) {
         throw new RuntimeException(e);
      }
   }