GB28181：基于JAVA的Catalog目录获取[part3]

1、国标文件里面catalog的描述

2、java组装SIP信令

    /**
     * This method uses the SIP stack to send a message. 第一个参数：用户名 第二个参数：IP地址 第三个参数：设备ID
     */
    public synchronized void sendCatalog(String toIp,Integer toPort, String deviceId)
            throws ParseException, InvalidArgumentException, SipException {
        log.info("发送 sendCatalog ");
        String catalog = String.format(CATALOG_FORMAT, SN.incrementAndGet(), deviceId);
        Request request = createRequest(deviceId, toIp+":"+toPort, Request.MESSAGE, null, "QQ346875436CatalogTag", "QQ346875436CatalogBranch", Request.MESSAGE,20L,null);
        ContentTypeHeader contentTypeHeader = headerFactory.createContentTypeHeader("Application", "MANSCDP+xml");
        request.setContent(catalog, contentTypeHeader);
        sipProvider.sendRequest(request);
        log.info("发送 sendCatalog 结束.....");
    }

 private Request createRequest(String deviceId, String toIpAddPort, String method, String callId,
                                  String tag, String branch, String CSeqMethod, Long CSeq, String toTag)
            throws ParseException, InvalidArgumentException {
        SipURI from = addressFactory
                .createSipURI(deviceId, ip + ":" + port);
        Address fromNameAddress = addressFactory.createAddress(from);
        FromHeader fromHeader = headerFactory.createFromHeader(fromNameAddress, tag);

        SipURI toAddress = addressFactory.createSipURI(deviceId, toIpAddPort);
        Address toNameAddress = addressFactory.createAddress(toAddress);
        ToHeader toHeader = headerFactory.createToHeader(toNameAddress, toTag);

        SipURI requestURI = addressFactory.createSipURI(deviceId, toIpAddPort);

        ArrayList<ViaHeader> viaHeaders = new ArrayList<ViaHeader>();
        ViaHeader viaHeader = headerFactory
                .createViaHeader(ip, port, "udp", branch);
        viaHeaders.add(viaHeader);

        CallIdHeader callIdHeader = StringUtils.isEmpty(callId) ? sipProvider.getNewCallId()
                : headerFactory.createCallIdHeader(callId);

        CSeqHeader cSeqHeader = headerFactory.createCSeqHeader(CSeq == null ? 1L : CSeq, CSeqMethod);

        MaxForwardsHeader maxForwards = headerFactory.createMaxForwardsHeader(70);
        return messageFactory.createRequest(requestURI, method, callIdHeader, cSeqHeader,
                fromHeader, toHeader, viaHeaders, maxForwards);
    }

3、发送的抓包信令

MESSAGE sip:34020000001110000001@192.168.1.200:5060 SIP/2.0
Call-ID: fce0e85df3e239bd013fcdd7c0e9336a@192.168.1.18
CSeq: 20 MESSAGE
From: <sip:34020000001110000001@192.168.1.18:5060>;tag=QQ346875436CatalogTag
To: <sip:34020000001110000001@192.168.1.200:5060>
Via: SIP/2.0/UDP 172.18.100.18:5060;branch=QQ136320186CatalogBranch
Max-Forwards: 70
Content-Type: Application/MANSCDP+xml
Content-Length: 123

<?xml version="1.0"?>
<Query>
<CmdType>Catalog</CmdType>
<SN>20001</SN>
<DeviceID>34020000001110000001</DeviceID>
</Query>

4、设备返回的代码处理

    @Override
    public void processRequest(RequestEvent requestEvent, AddressFactory addressFactory, MessageFactory messageFactory, HeaderFactory headerFactory, SipProvider sipProvider) {
        Request request = requestEvent.getRequest();
        if (null == request) {
            log.error("processRequest RequestEvent is null");
            return;
        }
        switch (request.getMethod().toUpperCase()) {
            case Request.MESSAGE:
                log.debug("收到MESSAGE的请求");
                doRequestMessage(requestEvent, addressFactory,messageFactory, headerFactory, sipProvider);
                break;
                default:
                    log.info("不处理的requestMethod：" + cSeqHeader.getMethod().toUpperCase());
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private void doRequestMessage(RequestEvent requestEvent, AddressFactory addressFactory, MessageFactory messageFactory, HeaderFactory headerFactory, SipProvider sipProvider) {
        try {
            Request request = requestEvent.getRequest();
            String encode = request.toString();
            if (org.apache.commons.lang3.StringUtils.contains(encode, MST_TYPE_KEEPALIVE)) {
                log.debug("收到下级域发来的心跳请求,{}", request.getRequestURI());
                doSuccess(requestEvent, addressFactory, messageFactory, headerFactory, sipProvider);
            } else if (org.apache.commons.lang3.StringUtils.contains(encode, MST_TYPE_CATALOG)) {
                ViaHeader viaHeader = (ViaHeader) request.getHeader(ViaHeader.NAME);
                log.info("收到目录检索返回，IP={},Port={}", viaHeader.getReceived(), viaHeader.getRPort());
                doSuccess(requestEvent, addressFactory, messageFactory, headerFactory, sipProvider);
                doRequestCatalog(requestEvent.getRequest(),encode);
            }
        }catch (Exception e) {
            log.error("doRequestMessage Error:{}",e.getMessage());
            e.printStackTrace();
        }
    }

3、源码

源码：给个star吧https://gitee.com/yuntian_admin/srymy