|  |  | 
 |  |  | package com.genersoft.iot.vmp.gb28181.transmit.event.request; | 
 |  |  |  | 
 |  |  | import gov.nist.javax.sip.SipProviderImpl; | 
 |  |  | import gov.nist.javax.sip.SipStackImpl; | 
 |  |  | import gov.nist.javax.sip.message.SIPRequest; | 
 |  |  | import gov.nist.javax.sip.stack.SIPServerTransaction; | 
 |  |  | import org.dom4j.Document; | 
 |  |  | import org.dom4j.DocumentException; | 
 |  |  | import org.dom4j.Element; | 
 |  |  | import org.dom4j.io.SAXReader; | 
 |  |  | import org.slf4j.Logger; | 
 |  |  | import org.slf4j.LoggerFactory; | 
 |  |  | import org.springframework.beans.factory.InitializingBean; | 
 |  |  | import org.springframework.beans.factory.annotation.Autowired; | 
 |  |  | import org.springframework.beans.factory.annotation.Qualifier; | 
 |  |  |  | 
 |  |  | import javax.sip.*; | 
 |  |  | import javax.sip.address.Address; | 
 |  |  | import javax.sip.address.AddressFactory; | 
 |  |  | import javax.sip.address.SipURI; | 
 |  |  | import javax.sip.header.ContentTypeHeader; | 
 |  |  | import javax.sip.header.HeaderFactory; | 
 |  |  | import javax.sip.header.ViaHeader; | 
 |  |  | import javax.sip.message.MessageFactory; | 
 |  |  | import javax.sip.message.Request; | 
 |  |  | import javax.sip.message.Response; | 
 |  |  | import java.io.ByteArrayInputStream; | 
 |  |  | import java.text.ParseException; | 
 |  |  |  | 
 |  |  | /**     | 
 |  |  |  * @description:处理接收IPCamera发来的SIP协议请求消息 | 
 |  |  |  * @author: songww | 
 |  |  |  * @date:   2020年5月3日 下午4:42:22      | 
 |  |  |  */ | 
 |  |  | public abstract class SIPRequestProcessorAbstract implements InitializingBean, ISIPRequestProcessor { | 
 |  |  | public abstract class SIPRequestProcessorAbstract  { | 
 |  |  |  | 
 |  |  |    private final static Logger logger = LoggerFactory.getLogger(SIPRequestProcessorAbstract.class); | 
 |  |  |  | 
 |  |  |    @Autowired | 
 |  |  |    @Qualifier(value="tcpSipProvider") | 
 |  |  | 
 |  |  |    @Autowired | 
 |  |  |    @Qualifier(value="udpSipProvider") | 
 |  |  |    private SipProviderImpl udpSipProvider; | 
 |  |  |  | 
 |  |  |    /** | 
 |  |  |     * 根据 RequestEvent 获取 ServerTransaction | 
 |  |  |     * @param evt | 
 |  |  |     * @return | 
 |  |  |     */ | 
 |  |  |    public ServerTransaction getServerTransaction(RequestEvent evt) { | 
 |  |  |       Request request = evt.getRequest(); | 
 |  |  |       ServerTransaction serverTransaction = evt.getServerTransaction(); | 
 |  |  |       // 判断TCP还是UDP | 
 |  |  |       boolean isTcp = false; | 
 |  |  |       ViaHeader reqViaHeader = (ViaHeader) request.getHeader(ViaHeader.NAME); | 
 |  |  |       String transport = reqViaHeader.getTransport(); | 
 |  |  |       if (transport.equals("TCP")) { | 
 |  |  |          isTcp = true; | 
 |  |  |       } | 
 |  |  |  | 
 |  |  |       if (serverTransaction == null) { | 
 |  |  |          try { | 
 |  |  |             if (isTcp) { | 
 |  |  |                SipStackImpl stack = (SipStackImpl)tcpSipProvider.getSipStack(); | 
 |  |  |                serverTransaction = (SIPServerTransaction) stack.findTransaction((SIPRequest)request, true); | 
 |  |  |                if (serverTransaction == null) { | 
 |  |  |                   serverTransaction = tcpSipProvider.getNewServerTransaction(request); | 
 |  |  |                } | 
 |  |  |             } else { | 
 |  |  |                SipStackImpl stack = (SipStackImpl)udpSipProvider.getSipStack(); | 
 |  |  |                serverTransaction = (SIPServerTransaction) stack.findTransaction((SIPRequest)request, true); | 
 |  |  |                if (serverTransaction == null) { | 
 |  |  |                   serverTransaction = udpSipProvider.getNewServerTransaction(request); | 
 |  |  |                } | 
 |  |  |             } | 
 |  |  |          } catch (TransactionAlreadyExistsException e) { | 
 |  |  |             logger.error(e.getMessage()); | 
 |  |  |          } catch (TransactionUnavailableException e) { | 
 |  |  |             logger.error(e.getMessage()); | 
 |  |  |          } | 
 |  |  |       } | 
 |  |  |       return serverTransaction; | 
 |  |  |    } | 
 |  |  | 	 | 
 |  |  |    public AddressFactory getAddressFactory() { | 
 |  |  |       try { | 
 |  |  |          return SipFactory.getInstance().createAddressFactory(); | 
 |  |  |       } catch (PeerUnavailableException e) { | 
 |  |  |          e.printStackTrace(); | 
 |  |  |       } | 
 |  |  |       return null; | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    public HeaderFactory getHeaderFactory() { | 
 |  |  |       try { | 
 |  |  |          return SipFactory.getInstance().createHeaderFactory(); | 
 |  |  |       } catch (PeerUnavailableException e) { | 
 |  |  |          e.printStackTrace(); | 
 |  |  |       } | 
 |  |  |       return null; | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    public MessageFactory getMessageFactory() { | 
 |  |  |       try { | 
 |  |  |          return SipFactory.getInstance().createMessageFactory(); | 
 |  |  |       } catch (PeerUnavailableException e) { | 
 |  |  |          e.printStackTrace(); | 
 |  |  |       } | 
 |  |  |       return null; | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    /*** | 
 |  |  |     * 回复状态码 | 
 |  |  |     * 100 trying | 
 |  |  |     * 200 OK | 
 |  |  |     * 400 | 
 |  |  |     * 404 | 
 |  |  |     * @param evt | 
 |  |  |     * @throws SipException | 
 |  |  |     * @throws InvalidArgumentException | 
 |  |  |     * @throws ParseException | 
 |  |  |     */ | 
 |  |  |    public void responseAck(RequestEvent evt, int statusCode) throws SipException, InvalidArgumentException, ParseException { | 
 |  |  |       Response response = getMessageFactory().createResponse(statusCode, evt.getRequest()); | 
 |  |  |       ServerTransaction serverTransaction = getServerTransaction(evt); | 
 |  |  |       serverTransaction.sendResponse(response); | 
 |  |  |       if (statusCode >= 200) { | 
 |  |  |          if (serverTransaction.getDialog() != null) serverTransaction.getDialog().delete(); | 
 |  |  |       } | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    public void responseAck(RequestEvent evt, int statusCode, String msg) throws SipException, InvalidArgumentException, ParseException { | 
 |  |  |       Response response = getMessageFactory().createResponse(statusCode, evt.getRequest()); | 
 |  |  |       response.setReasonPhrase(msg); | 
 |  |  |       ServerTransaction serverTransaction = getServerTransaction(evt); | 
 |  |  |       serverTransaction.sendResponse(response); | 
 |  |  |       if (statusCode >= 200) { | 
 |  |  |          if (serverTransaction.getDialog() != null) serverTransaction.getDialog().delete(); | 
 |  |  |       } | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    /** | 
 |  |  |     * 回复带sdp的200 | 
 |  |  |     * @param evt | 
 |  |  |     * @param sdp | 
 |  |  |     * @throws SipException | 
 |  |  |     * @throws InvalidArgumentException | 
 |  |  |     * @throws ParseException | 
 |  |  |     */ | 
 |  |  |    public void responseAck(RequestEvent evt, String sdp) throws SipException, InvalidArgumentException, ParseException { | 
 |  |  |       Response response = getMessageFactory().createResponse(Response.OK, evt.getRequest()); | 
 |  |  |       SipFactory sipFactory = SipFactory.getInstance(); | 
 |  |  |       ContentTypeHeader contentTypeHeader = sipFactory.createHeaderFactory().createContentTypeHeader("APPLICATION", "SDP"); | 
 |  |  |       response.setContent(sdp, contentTypeHeader); | 
 |  |  |  | 
 |  |  |       SipURI sipURI = (SipURI)evt.getRequest().getRequestURI(); | 
 |  |  |  | 
 |  |  |       Address concatAddress = sipFactory.createAddressFactory().createAddress( | 
 |  |  |             sipFactory.createAddressFactory().createSipURI(sipURI.getUser(),  sipURI.getHost()+":"+sipURI.getPort() | 
 |  |  |             )); | 
 |  |  |       response.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress)); | 
 |  |  |       getServerTransaction(evt).sendResponse(response); | 
 |  |  |    } | 
 |  |  |  | 
 |  |  |    public Element getRootElement(RequestEvent evt) throws DocumentException { | 
 |  |  |       return getRootElement(evt, "gb2312"); | 
 |  |  |    } | 
 |  |  |    public Element getRootElement(RequestEvent evt, String charset) throws DocumentException { | 
 |  |  |       if (charset == null) charset = "gb2312"; | 
 |  |  |       Request request = evt.getRequest(); | 
 |  |  |       SAXReader reader = new SAXReader(); | 
 |  |  |       reader.setEncoding(charset); | 
 |  |  |       Document xml = reader.read(new ByteArrayInputStream(request.getRawContent())); | 
 |  |  |       return xml.getRootElement(); | 
 |  |  |    } | 
 |  |  |  | 
 |  |  | } |