RFC3261(SIP协议)中文文字版(带目录)

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sip  RFC3261  中文版   
   
sip RFC3261  中文版 ............................................................................................................... 1 
1、SIP 协议介绍 ............................................................................................................................... 8 
2、SIP 协议功能概况 ....................................................................................................................... 8 
3、术语 ............................................................................................................................................ 9 
4、实施概览..................................................................................................................................... 9 
5、协议的结构 ............................................................................................................................... 16 
6、协议的定义 ............................................................................................................................... 17 
7、SIP 消息： ................................................................................................................................. 23 
7．1  请求............................................................................................................................... 23 
7．2 应答................................................................................................................................ 24 
3  头域 ................................................................................................................................. 25 
3.1  头域格式。 ........................................................................................................... 25 
3.2  头域分类。 ........................................................................................................... 27 
3.3  缩写格式 ............................................................................................................... 27 
4 包体 .................................................................................................................................. 27 
4.1  消息正文类型(MessageBodyType) ...................................................................... 27 
4.2  消息体长度 ........................................................................................................... 28 
5  分帧的 SIP 消息（Framing SIP Messages） ................................................................... 28 
一般用户代理行为 ..................................................................................................................... 28 
1 UAC 特性 ........................................................................................................................... 29 
1.1  产生一个请求 ....................................................................................................... 29 
1.2  发送一个请求 ....................................................................................................... 32 
1.3  处理应答 ............................................................................................................... 33 
2 UAS 特性 ........................................................................................................................... 35 
2.1  方法判定 ............................................................................................................... 35 
2.2  包头判断 ............................................................................................................... 36 
2.3  内容处理 ............................................................................................................... 37 
2.4  应用扩展 ............................................................................................................... 37 
2.5  处理请求 ............................................................................................................... 37 
2.6  产生应答 ............................................................................................................... 38 
3  重定向服务器 .................................................................................................................. 39 
取消一个请求(Cancel) ............................................................................................................... 40 
1  客户行为(Client Behavior) ............................................................................................... 40 
2  服务端行为(Server Behavior) .......................................................................................... 41 
注册(Registrations) ................................................................................................................... 42 
1  概览 ............................................................................................................................... 42 
2  构造一个 REGISTER 请求 .............................................................................................. 42 
2.1  增加绑定 ............................................................................................................. 44 
2.2  删除绑定 ............................................................................................................. 45 
2.3  访问绑定 ............................................................................................................. 45 
2.4  刷新绑定 ............................................................................................................. 45 

2.5  设置内部时钟 ..................................................................................................... 46 
2.6  寻找注册服务器 ................................................................................................. 46 
2.7  传送一个请求 ..................................................................................................... 46 
2.8  错误响应 ............................................................................................................. 46 
3  处理 REGISTER 请求 ...................................................................................................... 47 
查询能力................................................................................................................................... 48 
1  构造 OPTIONS 请求 ....................................................................................................... 49 
2  处理 OPTIONS 请求 ....................................................................................................... 50 
对话(Dialog) .............................................................................................................................. 51 
1  创建一个对话 ................................................................................................................ 51 
1.1 UAS 行为 .............................................................................................................. 52 
1.2 UAC 行为 .............................................................................................................. 52 
2  对话中的请求 ................................................................................................................ 53 
2.1 UAC 行为 .............................................................................................................. 53 
2.2 UAS 行为 .............................................................................................................. 55 
3  终止对话........................................................................................................................ 56 
初始化一个会话 ....................................................................................................................... 56 
1  概览 ............................................................................................................................... 56 
2 UAC 处理 ......................................................................................................................... 57 
2.1  创建一个初始化的 INVITE ................................................................................. 57 
2.2  处理 INVITE 应答 ................................................................................................ 58 
3 UAS 处理 ......................................................................................................................... 60 
3.1  处理 INVITE ......................................................................................................... 60 
更改已经存在的会话 ............................................................................................................... 62 
1 UAC 行为 ......................................................................................................................... 62 
2 UAS 行为 ......................................................................................................................... 63 
结束一个会话 ........................................................................................................................... 64 
1  使用 BYE 请求终止一个会话 ........................................................................................ 65 
1.1 UAC 行为 .............................................................................................................. 65 
1.2 UAS 行为 .............................................................................................................. 65 
proxy 行为 .................................................................................................................................. 65 
1  概述 ............................................................................................................................... 65 
2  有状态的 proxy .............................................................................................................. 66 
3  验证请求........................................................................................................................ 67 
4  路由信息预处理 ............................................................................................................ 68 
5  确定请求的目的 ............................................................................................................ 69 
6  请求转发........................................................................................................................ 71 
7  应答的处理 .................................................................................................................... 76 
8  处理定时器 C ................................................................................................................ 82 
9  处理通讯层的错误 ........................................................................................................ 82 
10 CANCEL 处理 ................................................................................................................. 83 
11  无状态的 proxy ............................................................................................................ 83 
12 Proxy Route 处理的总结 .............................................................................................. 85 
12.1 例子 ................................................................................................................... 85 

事务 ........................................................................................................................................... 88 
1  客户端事务 .................................................................................................................... 90 
1.1 INVITE 客户事务 .................................................................................................. 91 
1.2  非 INVITE 客户端事务 ........................................................................................ 95 
1.3  客户端事务匹配应答 ......................................................................................... 97 
1.4  处理通讯错误。 ................................................................................................. 97 
2  服务端事务 .................................................................................................................... 99 
2.1 INVITE 服务端事务 .............................................................................................. 99 
2.2  非 INVITE 服务端事务 ...................................................................................... 102 
2.3  为服务端事务匹配请求。 ............................................................................... 103 
2.4  处理通讯错误 ................................................................................................... 105 
通讯（transport） ................................................................................................................. 105 
1  客户 Clients .................................................................................................................. 106 
1.1  发送请求 ........................................................................................................... 106 
1.2  接收应答 ........................................................................................................... 108 
2  服务端.......................................................................................................................... 108 
2.1  接收请求 ........................................................................................................... 108 
2.2  发送应答 ........................................................................................................... 109 
3  分块 ............................................................................................................................. 110 
4  错误处理...................................................................................................................... 110 
常见消息部件(Common Message Components) ................................................................... 110 
1 SIP 和 SIPS 统一资源标记 ............................................................................................ 110 
1.1 SIP 和 SIPS 部件 ................................................................................................. 111 
1.2 Character Escaping Requirements（字符转码要求） ...................................... 113 
1.3 SIP 和 SIPS URI 例子 .......................................................................................... 115 
1.4 URI 比较 ............................................................................................................. 115 
1.5  从 URI 中产生请求 ........................................................................................... 117 
1.6  关联 SIP URI 和 tel URL ..................................................................................... 118 
2 Option Tags.................................................................................................................... 120 
3 Tags ................................................................................................................................ 120 
头域 ........................................................................................................................................ 121 
1 Accept ........................................................................................................................... 122 
2 Accept-Encoding............................................................................................................ 124 
3 Accept-Language ........................................................................................................... 124 
4 Alert-Info ....................................................................................................................... 125 
5 Allow ............................................................................................................................. 125 
6 Authentication-Info ....................................................................................................... 126 
7 Authorization................................................................................................................. 126 
8 Call-ID ............................................................................................................................ 126 
9 Call-Info ......................................................................................................................... 127 
10 Contact ........................................................................................................................ 127 
11 Content-Disposition .................................................................................................... 128 
12 Content-Encoding ........................................................................................................ 129 
13 Content-Language ....................................................................................................... 129 

14 Content-Length ........................................................................................................... 129 
15 Content-Type ............................................................................................................... 130 
16 Cseq ............................................................................................................................. 130 
17 Date ............................................................................................................................. 130 
18 Error-Info ..................................................................................................................... 131 
19 Expires ......................................................................................................................... 131 
20 From ............................................................................................................................ 131 
21 In-Reply-To .................................................................................................................. 132 
22 Max-Forwards ............................................................................................................. 132 
23 Min-Expires ................................................................................................................. 133 
24 MIME-Version.............................................................................................................. 133 
25 Organization ................................................................................................................ 133 
26 Priority ......................................................................................................................... 133 
27 Proxy-Authenticate ..................................................................................................... 134 
28 Proxy-Authorization .................................................................................................... 134 
29 Proxy-Require .............................................................................................................. 135 
30 Record-Route............................................................................................................... 135 
31 Reply-To ....................................................................................................................... 135 
32 Require ........................................................................................................................ 135 
33 Retry-After................................................................................................................... 136 
34 Route ........................................................................................................................... 136 
35 Server .......................................................................................................................... 136 
36 Subject ......................................................................................................................... 137 
37 Supported .................................................................................................................... 137 
38 Timestamp................................................................................................................... 137 
39 To ................................................................................................................................. 137 
40 Unsupported ............................................................................................................... 138 
41 User-Agent .................................................................................................................. 138 
42 Via ............................................................................................................................... 138 
43  警告 ........................................................................................................................... 139 
44 WWW-Authenticate .................................................................................................... 141 
应答代码................................................................................................................................. 141 
1  临时应答 1xx ............................................................................................................... 141 
1.1 100 Trying ........................................................................................................... 142 
1.2 180 Ringing ......................................................................................................... 142 
1.3 818 Call is Being Forwarded(呼叫被转发) ......................................................... 142 
1.4 182 Queued ........................................................................................................ 142 
1.5 183  会话进度 .................................................................................................... 142 
2  成功信息 2xx ............................................................................................................... 142 
2.1 200 OK ................................................................................................................ 143 
3  转发请求 3XX .............................................................................................................. 143 
3.1 300 Multiple Choices .......................................................................................... 143 
3.2 301 Moved Permently ........................................................................................ 143 
3.3 302 Moved Temporarily ..................................................................................... 143 

3.4 305 Use Proxy ..................................................................................................... 144 
3.5 380 Alternative Service ...................................................................................... 144 
4  请求失败 4xx ............................................................................................................... 144 
4.1 400 Bad Request ................................................................................................ 144 
4.2 401 Unauthorized ............................................................................................... 144 
4.3 402 Payment Required ....................................................................................... 144 
4.4 403 Forbidden .................................................................................................... 145 
4.5 404 Not Found .................................................................................................... 145 
4.6 405 Method Not Allowed ................................................................................... 145 
4.7 Not Acceptable ................................................................................................... 145 
4.8 407 Proxy Authentication Required ................................................................... 145 
4.9 408 Request Timeout ......................................................................................... 145 
4.10 410 Gone .......................................................................................................... 146 
4.11 413 请求实体过大。 ....................................................................................... 146 
4.12 414 Request-URI Too Long ............................................................................... 146 
4.13 415 Unsupported Media Type .......................................................................... 146 
4.14 416 Unsupported URI Scheme ......................................................................... 146 
4.15 Bad Extension ................................................................................................... 146 
4.16 421Extension Required .................................................................................... 146 
4.17 423 Interval Too Brief ....................................................................................... 147 
4.18 480 Temporarily Unavailable ............................................................................ 147 
4.19 481 Call/Transaction Does Not Exist ................................................................ 147 
4.20 482 Loop Detected ........................................................................................... 147 
4.21 483 Too Many Hops .......................................................................................... 147 
4.22 484 Address InComplete .................................................................................. 148 
4.23 485 Ambiguous ................................................................................................ 148 
4.24 486 Busy Here .................................................................................................. 148 
4.25 487 Request Terminated .................................................................................. 148 
4.26 488 Not Acceptable Here ................................................................................. 148 
4.27 491 Request Pending ........................................................................................ 149 
4.28 493 Undecipherable ......................................................................................... 149 
5 Server Failure 5xx .......................................................................................................... 149 
5.1 500 Server Internal Error .................................................................................... 149 
5.2 501 Not Implemented ........................................................................................ 149 
5.3 502 Bad Gateway ............................................................................................... 150 
5.4 503 Service Unavailable ..................................................................................... 150 
5.5 504 Server Time-out ........................................................................................... 150 
5.6 505 Version Not Supported ................................................................................ 150 
5.7 Message To Large ............................................................................................... 150 
6 Global Failures 6xx ........................................................................................................ 150 
6.1 600 Busy Everywhere ......................................................................................... 151 
6.2 603 Decline ......................................................................................................... 151 
6.3 604 Does Not Exists Anywhere........................................................................... 151 
6.4 606 Not Acceptable ............................................................................................ 151 