优化sip消息构建，去除ServerTransaction的使用

648540858

2022-10-18 80d2edeef25f752e0a80a6cff99e38f61c2d2cb2

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
package com.genersoft.iot.vmp.gb28181.transmit;
 
import com.genersoft.iot.vmp.gb28181.event.SipSubscribe;
import com.genersoft.iot.vmp.gb28181.utils.SipUtils;
import com.genersoft.iot.vmp.utils.GitUtil;
import gov.nist.javax.sip.SipProviderImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
 
import javax.sip.SipException;
import javax.sip.SipFactory;
import javax.sip.header.CallIdHeader;
import javax.sip.header.UserAgentHeader;
import javax.sip.header.ViaHeader;
import javax.sip.message.Message;
import javax.sip.message.Request;
import javax.sip.message.Response;
import java.text.ParseException;
 
@Component
public class SIPSender {
 
    private final Logger logger = LoggerFactory.getLogger(SIPSender.class);
 
    @Autowired
    @Qualifier(value = "tcpSipProvider")
    private SipProviderImpl tcpSipProvider;
 
    @Autowired
    @Qualifier(value = "udpSipProvider")
    private SipProviderImpl udpSipProvider;
 
    @Autowired
    private SipFactory sipFactory;
 
    @Autowired
    private GitUtil gitUtil;
 
    @Autowired
    private SipSubscribe sipSubscribe;
 
    public void transmitRequest(Message message) throws SipException, ParseException {
        transmitRequest(message, null, null);
    }
 
    public void transmitRequest(Message message, SipSubscribe.Event errorEvent) throws SipException, ParseException {
        transmitRequest(message, errorEvent, null);
    }
 
    public void transmitRequest(Message message, SipSubscribe.Event errorEvent, SipSubscribe.Event okEvent) throws SipException, ParseException {
        ViaHeader viaHeader = (ViaHeader)message.getHeader(ViaHeader.NAME);
        String transport = "UDP";
        if (viaHeader == null) {
            logger.warn("[消息头缺失]： ViaHeader");
        }else {
            transport = viaHeader.getTransport();
        }
        if (message.getHeader(UserAgentHeader.NAME) == null) {
            try {
                message.addHeader(SipUtils.createUserAgentHeader(sipFactory, gitUtil));
            } catch (ParseException e) {
                logger.error("添加UserAgentHeader失败", e);
            }
        }
 
        CallIdHeader callIdHeader = (CallIdHeader) message.getHeader(CallIdHeader.NAME);
        // 添加错误订阅
        if (errorEvent != null) {
            sipSubscribe.addErrorSubscribe(callIdHeader.getCallId(), (eventResult -> {
                errorEvent.response(eventResult);
                sipSubscribe.removeErrorSubscribe(eventResult.callId);
                sipSubscribe.removeOkSubscribe(eventResult.callId);
            }));
        }
        // 添加订阅
        if (okEvent != null) {
            sipSubscribe.addOkSubscribe(callIdHeader.getCallId(), eventResult -> {
                okEvent.response(eventResult);
                sipSubscribe.removeOkSubscribe(eventResult.callId);
                sipSubscribe.removeErrorSubscribe(eventResult.callId);
            });
        }
        if ("TCP".equals(transport)) {
            if (message instanceof Request) {
                tcpSipProvider.sendRequest((Request)message);
            }else if (message instanceof Response) {
                tcpSipProvider.sendResponse((Response)message);
            }
 
        } else if ("UDP".equals(transport)) {
            if (message instanceof Request) {
                udpSipProvider.sendRequest((Request)message);
            }else if (message instanceof Response) {
                udpSipProvider.sendResponse((Response)message);
            }
        }
    }
 
    public CallIdHeader getNewCallIdHeader(String transport){
        return  transport.equalsIgnoreCase("TCP") ? tcpSipProvider.getNewCallId()
                : udpSipProvider.getNewCallId();
    }
}