RFC 3263 SIP: SIP 定位服务器

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最新推荐文章于 2025-06-20 10:06:30 发布 · 150 阅读

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本文介绍了一种使用SIP协议定位服务器的方法，详细讨论了选择传输协议、确定端口及IP地址的过程，并阐述了如何通过DNS解决SIP相关问题。此外，还介绍了客户端和服务端的具体使用方法，以及构建SIP URI的安全考虑。



............................          ..............................

    .                          .          .                            .

    .                +-------+ .          . +-------+                  .

    .                |       | .          . |       |                  .

    .                | Proxy |------------- | Proxy |                  .

    .                |   1   | .          . |  2    |                  .

    .                |       | .          . |       |                  .

    .              / +-------+ .          . +-------+ /                .

    .             /            .          .            /               .

    .            /             .          .             /              .

    .           /              .          .              /             .

    .          /               .          .               /            .

    .         /                .          .                /           .

    .        /                 .          .                 /          .

    .       /                  .          .                  /         .

    .   +-------+              .          .                +-------+   .

    .   |       |              .          .                |       |   .

    .   |       |              .          .                |       |   .

    .   | UA 1  |              .          .                | UA 2  |   .

    .   |       |              .          .                |       |   .

    .   +-------+              .          .                +-------+   .

    .              Domain A    .          .   Domain B                 .

    ............................          ..............................


                        Figure 1: The SIP trapezoid

Table of Contents



   1          Introduction ........................................    2

   2          Problems DNS is Needed to Solve .....................    2

   3          Terminology .........................................    5

   4          Client Usage ........................................    5

   4.1        Selecting a Transport Protocol ......................    6

   4.2        Determining Port and IP Address .....................    8

   4.3        Details of RFC 2782
 Process .........................    9

   4.4        Consideration for Stateless Proxies .................   10

   5          Server Usage ........................................   11

   6          Constructing SIP URIs ...............................   12

   7          Security Considerations .............................   12

   8          The Transport Determination Application .............   13

   9          IANA Considerations .................................   14

   10         Acknowledgements ....................................   14

   11         Normative References ................................   15

   12         Informative References ..............................   15


Rosenberg & Schulzrinne     Standards Track                     [Page 1]


RFC 3263               SIP: Locating SIP Servers               June 2002




   13         Authors' Addresses ..................................   16

   14         Full Copyright Statement ............................   17