2、注册信令

2.1基本注册

2.1.1 抓包过程

2.1.2 详细步骤

2.1.2.1、REGISTER

REGISTER sip:34020000002000000001@192.168.9.186:15060 SIP/2.0

Via: SIP/2.0/TCP 192.168.9.186:42860;rport;branch=z9hG4bK1557586049

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=1292111901

To: <sip:30514805331320000140@192.168.9.186:5060>

Call-ID: 367786093

CSeq: 1 REGISTER

Contact: <sip:30514805331320000140@192.168.9.186:5060>

Max-Forwards: 70

User-Agent: DVR UAC

Expires: 3600

Content-Length: 0

2.1.2.2、401 Unauthorized

SIP/2.0 401 Unauthorized

Via: SIP/2.0/TCP 192.168.9.186:42860;rport=42860;received=192.168.9.186;branch=z9hG4bK1557586049

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=1292111901

To: <sip:30514805331320000140@192.168.9.186:5060>;tag=354769008

CSeq: 1 REGISTER

Call-ID: 367786093

User-Agent: EasyGBS v200511

Content-Length: 0

Contact: <sip:34020000002000000001@192.168.9.161:15060>

WWW-Authenticate: Digest realm="3402000000",nonce="59074a1a5ae62cb13d81d919b69af0be"

2.1.2.3、重新REGISTER

REGISTER sip:34020000002000000001@192.168.9.186:15060 SIP/2.0

Via: SIP/2.0/TCP 192.168.9.186:42860;rport;branch=z9hG4bK2080745015

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=1292111901

To: <sip:30514805331320000140@192.168.9.186:5060>

Call-ID: 367786093

CSeq: 2 REGISTER

Contact: <sip:30514805331320000140@192.168.9.186:5060>

Authorization: Digest username="30514805331320000140", realm="3402000000", nonce="59074a1a5ae62cb13d81d919b69af0be", uri="sip:34020000002000000001@192.168.9.186:15060", response="1cfb6de705b4c6fe0c135a6e7ebb7965", algorithm=MD5

Max-Forwards: 70

User-Agent: DVR UAC

Expires: 3600

Content-Length: 0

2.1.2.4、200 OK

SIP/2.0 200 OK

Via: SIP/2.0/TCP 192.168.9.186:42860;rport=42860;received=192.168.9.186;branch=z9hG4bK2080745015

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=1292111901

To: <sip:30514805331320000140@192.168.9.186:5060>;tag=241770024

CSeq: 2 REGISTER

Call-ID: 367786093

User-Agent: Easy SIP Server

Content-Length: 0

Date: 2023-03-24T14:06:22.760

Expires: 3600

Contact: <sip:34020000002000000001@192.168.9.161:15060>

2.2基本数字证书双向认证注册

2.2.1、REGISTER

2.2.2、401 Unauthorized

2.2.3、重新REGISTER

2.2.4、200 OK

2.3、注销

2.3.1 、REGISTER

2.3.2 、401 Unauthorized

2.3.3 、重新REGISTER

2.3.4、200 OK

2.4、状态信息

2.4.1 心跳报

MESSAGE sip:34020000002000000001@192.168.9.161:15060 SIP/2.0

Via: SIP/2.0/TCP 192.168.9.186:42860;rport;branch=z9hG4bK999627714

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=895079034

To: <sip:34020000002000000001@192.168.9.161:15060>

Call-ID: 1652649404

CSeq: 20 MESSAGE

Content-Type: Application/MANSCDP+xml

Max-Forwards: 70

User-Agent: DVR UAC

Content-Length:   160



<?xml version="1.0" encoding="UTF-8"?>

<Notify>

<CmdType>Keepalive</CmdType>

<SN>1</SN>

<DeviceID>30514805331320000140</DeviceID>

<Status>OK</Status>

</Notify>

SIP/2.0 200 OK

Via: SIP/2.0/TCP 192.168.9.186:42860;rport=42860;received=192.168.9.186;branch=z9hG4bK999627714

From: <sip:30514805331320000140@192.168.9.186:5060>;tag=895079034

To: <sip:34020000002000000001@192.168.9.161:15060>;tag=180771049

CSeq: 20 MESSAGE

Call-ID: 1652649404

User-Agent: Easy SIP Server

Content-Length: 0

2.5、实时点播

点击播放

流程4步 sip 服务器-> 设备客服端

INVITE sip:30514805331320000141@192.168.9.186:59354;transport=tcp SIP/2.0

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK863172447

From: <sip:34020000002000000001@3402000000>;tag=989172447

To: <sip:30514805331320000141@192.168.9.186:59354>

Call-ID: 211171919

CSeq: 356 INVITE

Max-Forwards: 70

User-Agent: Easy SIP Server

Content-Length: 222

Content-Type: application/sdp

Contact: <sip:34020000002000000001@192.168.9.161:15060>

Subject: 30514805331320000141:0148000141,34020000002000000001:0



v=0

o=34020000002000000001 0 0 IN IP4 192.168.9.161

s=Play

c=IN IP4 192.168.9.161

t=0 0

m=video 50100 RTP/AVP 96 98 97

a=recvonly

a=rtpmap:96 PS/90000

a=rtpmap:98 H264/90000

a=rtpmap:97 MPEG4/90000

y=0148000141

流程5步设备客服端 -> sip 服务器

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK863172447

From: <sip:34020000002000000001@3402000000>;tag=989172447

To: <sip:30514805331320000141@192.168.9.186:59354>

Call-ID: 211171919

CSeq: 356 INVITE

User-Agent: DVR UAC

Content-Length: 0

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK863172447

From: <sip:34020000002000000001@3402000000>;tag=989172447

To: <sip:30514805331320000141@192.168.9.186:59354>;tag=382514535

Call-ID: 211171919

CSeq: 356 INVITE

Contact: <sip:30514805331320000141@192.168.9.186:59354>

Content-Type: application/sdp

User-Agent: DVR UAC

Content-Length:   265



v=0

o=30514805331320000140 719885386 719885386 IN IP4 192.168.9.186

s=Play

c=IN IP4 192.168.9.186

t=0 0

m=video 15000 RTP/AVP 96

a=setup:active

a=sendonly

a=rtpmap:96 PS/90000

a=username:30514805331320000140

a=password:12345678

a=filesize:0

y=0148000141

流程7步 sip 服务器 -> 设备客服端

ACK sip:30514805331320000141@192.168.9.186:59354;transport=tcp SIP/2.0

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK929172974

From: <sip:34020000002000000001@3402000000>;tag=989172447

To: <sip:30514805331320000141@192.168.9.186:59354>;tag=382514535

Call-ID: 211171919

CSeq: 356 ACK

Max-Forwards: 70

User-Agent: Easy SIP Server

Content-Length: 0

实时媒体流 RTP

流程19步 sip 服务器 -> 设备客服端

流程20步设备客服端 -> sip 服务器

2.6 SDP 协议

v字段：协议版本
o字段：-
a字段：a=rtpmap: / [/] 中的,利用该属性携带编码器厂商名称。该属性表明该流为某厂商编码器编码且是不符合gb28181规定的媒体流，符合国标的媒体流不需要该属性。
例如：a=rtpmap:96 DAHUA/90000
a=rtpmap:96 HIKVISION/90000
a字段有下列格式：
a字段可携带倍数参数，用于文件下载时控制下载速度。格式： a=downloadspeed：下载倍数（整型）
a字段可携带文件大小参数，用于文件下载时的进度计算。格式： a=filesize:文件大小（单位：Byte）
a字段可携带setup、connection作为TCP连接协商参数。 a=setup：TCP连接方式（表示本SDP发送者在建立RTP over TCP连接时是主动还是被动发起TCP连接，“active”为主动，“passive”为被动）
a字段可携带SVC参数，用于视频传输时的分辨率或者帧频控制。a=svcspace：空域编码方式【取值整型。 0：不使用 1：1级增强 2：2级增强 3：3级增强】 a = svctime：时域编码方式

s字段：表示请求媒体流的操作类型，“Play”标识为点播请求 “Playback”标识回播请求 “Download”表示文件下载 “Talk”表示语音对讲；
u字段：u行应填写视音频文件的URL。该URL的取值有两种：简捷方式和普通方式。简捷方式直接采用产生该历史媒体的媒体源（如某个摄像头）的设备ID以及相关参数，参数用“：”分隔；普通方式采样http://储存设备ID[/文件夹]*/文件名；
m字段：描述媒体的媒体类型、端口、传输层协议、负载类型等内容。媒体类型采样“video”标识视频或者视音频混合内容，采样“audio”标识传输音频内容；传输方式采用“RTP/AVP”标识传输层协议为 RTP over UDP，采用“TCP/RTP/AVP”标识传输层协议为RTP over TCP；
t字段：当回放或者下载时，t行值为开始时间，结束时间，采样“ ”分隔；
y字段：十进制整数字符串，标识SSRC值。其中第一位为历史或者实时媒体流的标识位，0为实时，1为历史；第2位到第6位取20位SIP监控域ID之中的4-8位作为域标识；第7-10位作为域内媒体流标识，是一个与当前域内产生的媒体流SSRC值后4位不充分的四位十进制整数；
f字段：f=v/编码格式/分辨率/帧率/码率类型/码率大小 a/编码格式/码率大小/采样率其中v表示video a表示audio

2.7 设备目录查询

服务端 - > 客服端

MESSAGE sip:34020000001320000111@192.168.9.186:5060;transport=udp SIP/2.0

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK691041267

From: <sip:34020000002000000001@3402000000>;tag=45041267

To: <sip:34020000001320000111@3402000000>

Call-ID: 725041267

CSeq: 167 MESSAGE

Max-Forwards: 70

User-Agent: Easy SIP Server

Content-Length: 156

Content-Type: Application/MANSCDP+xml



<?xml version="1.0" encoding="UTF-8"?>

<Query>

    <CmdType>Catalog</CmdType>

    <SN>791041265</SN>

    <DeviceID>34020000001320000111</DeviceID>

</Query>

客服端 - > 服务端

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.9.161:15060;rport=15060;branch=z9hG4bK691041267

From: <sip:34020000002000000001@3402000000>;tag=45041267

To: <sip:34020000001320000111@3402000000>;tag=54976721

Call-ID: 725041267

CSeq: 167 MESSAGE

User-Agent: DVR UAC

Content-Length: 0

客服端 - > 服务端

服务端 - > 客服端

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.9.186:5060;rport=5060;received=192.168.9.186;branch=z9hG4bK1596506343

From: <sip:34020000001320000111@192.168.9.186:5060>;tag=1063069655

To: <sip:34020000002000000001@192.168.9.161:15060>;tag=393041274

CSeq: 20 MESSAGE

Call-ID: 2086294613

User-Agent: Easy SIP Server

Content-Length: 0