648540858
2020-10-26 9361943e47a09ea46f76adf06fa0d24a07ac711d
src/main/java/com/genersoft/iot/vmp/gb28181/transmit/response/impl/InviteResponseProcessor.java
@@ -2,7 +2,6 @@
import java.text.ParseException;
import javax.sip.ClientTransaction;
import javax.sip.Dialog;
import javax.sip.InvalidArgumentException;
import javax.sip.ResponseEvent;
@@ -22,58 +21,79 @@
import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorFactory;
import com.genersoft.iot.vmp.gb28181.transmit.response.ISIPResponseProcessor;
/**
 * @Description:处理INVITE响应
 * @author: songww
 * @date:   2020年5月3日 下午4:43:52
/**
 * @Description:处理INVITE响应
 * @author: swwheihei
 * @date: 2020年5月3日 下午4:43:52
 */
@Component
public class InviteResponseProcessor implements ISIPResponseProcessor {
   private final static Logger logger = LoggerFactory.getLogger(SIPProcessorFactory.class);
   /**
    * 处理invite响应
    * 
    * @param evt
    *            响应消息
    */
    * @param evt 响应消息
    * @throws ParseException
    */
   @Override
   public void process(ResponseEvent evt, SipLayer layer, SipConfig config) {
   public void process(ResponseEvent evt, SipLayer layer, SipConfig config) throws ParseException {
      try {
         Response response = evt.getResponse();
         int statusCode = response.getStatusCode();
         //trying不会回复
         if(statusCode == Response.TRYING){
         // trying不会回复
         if (statusCode == Response.TRYING) {
         }
         //成功响应
         //下发ack
         if(statusCode == Response.OK){
            ClientTransaction clientTransaction = evt.getClientTransaction();
            if(clientTransaction == null){
               logger.error("回复ACK时,clientTransaction为null >>> {}",response);
               return;
            }
            Dialog clientDialog = clientTransaction.getDialog();
         // 成功响应
         // 下发ack
         if (statusCode == Response.OK) {
            // ClientTransaction clientTransaction = evt.getClientTransaction();
            // if(clientTransaction == null){
            // logger.error("回复ACK时,clientTransaction为null >>> {}",response);
            // return;
            // }
            // Dialog clientDialog = clientTransaction.getDialog();
            CSeqHeader clientCSeqHeader = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
            long cseqId = clientCSeqHeader.getSeqNumber();
            /*
            createAck函数,创建的ackRequest,会采用Invite响应的200OK,中的contact字段中的地址,作为目标地址。
            有的终端传上来的可能还是内网地址,会造成ack发送不出去。接受不到音视频流
            所以在此处统一替换地址。和响应消息的Via头中的地址保持一致。
             */
            Request ackRequest = clientDialog.createAck(cseqId);
            SipURI requestURI = (SipURI) ackRequest.getRequestURI();
            // CSeqHeader clientCSeqHeader = (CSeqHeader)
            // response.getHeader(CSeqHeader.NAME);
            // long cseqId = clientCSeqHeader.getSeqNumber();
            // /*
            // createAck函数,创建的ackRequest,会采用Invite响应的200OK,中的contact字段中的地址,作为目标地址。
            // 有的终端传上来的可能还是内网地址,会造成ack发送不出去。接受不到音视频流
            // 所以在此处统一替换地址。和响应消息的Via头中的地址保持一致。
            // */
            // Request ackRequest = clientDialog.createAck(cseqId);
            // SipURI requestURI = (SipURI) ackRequest.getRequestURI();
            // ViaHeader viaHeader = (ViaHeader) response.getHeader(ViaHeader.NAME);
            // try {
            // requestURI.setHost(viaHeader.getHost());
            // } catch (Exception e) {
            // e.printStackTrace();
            // }
            // requestURI.setPort(viaHeader.getPort());
            // clientDialog.sendAck(ackRequest);
            Dialog dialog = evt.getDialog();
            CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
            Request reqAck = dialog.createAck(cseq.getSeqNumber());
            SipURI requestURI = (SipURI) reqAck.getRequestURI();
            ViaHeader viaHeader = (ViaHeader) response.getHeader(ViaHeader.NAME);
            // String viaHost =viaHeader.getHost();
            //getHost()函数取回的IP地址是“[xxx.xxx.xxx.xxx:yyyy]”的格式,需用正则表达式截取为“xxx.xxx.xxx.xxx"格式
            // Pattern p = Pattern.compile("(?<=//|)((\\w)+\\.)+\\w+");
            // Matcher matcher = p.matcher(viaHeader.getHost());
            // if (matcher.find()) {
            //    requestURI.setHost(matcher.group());
            // }
            requestURI.setHost(viaHeader.getHost());
            requestURI.setPort(viaHeader.getPort());
            clientDialog.sendAck(ackRequest);
            reqAck.setRequestURI(requestURI);
            dialog.sendAck(reqAck);
         }
      } catch (InvalidArgumentException | SipException e) {
         e.printStackTrace();
      } catch (ParseException e) {
         e.printStackTrace();
      }
   }