oSIP协议桟浅析（学习OSIP协议栈不可多得的材料）
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2011-03-18
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oSIP 协议栈浅析
1. oSIP 介绍........................................................................................................................................1
2. oSIP 结构分析................................................................................................................................1
2.1 oSIP 结构..............................................................................................................................1
2.2 状态机(Finite State Machines)模块.....................................................................................2
2.2.1 概述............................................................................................................................2
2.2.2 ICT 状态机.................................................................................................................3
2.2.3 NICT 状态机..............................................................................................................4
2.2.4 IST 状态机.................................................................................................................5
2.2.5 NIST 状态机..............................................................................................................7
2.3 解析器(Parsers)模块.............................................................................................................8
2.3.1 SIP Parser...................................................................................................................8
2.3.2 SDP Parser................................................................................................................10
2.3.3 URL Parser...............................................................................................................11
2.4 工具(Facilities)模块...........................................................................................................12
2.4.1 SDP negotiator.........................................................................................................12
2.4.2 Dialog management.................................................................................................12
3. oSIP 特点......................................................................................................................................13
3.1 oSIP 的优点........................................................................................................................13
3.2 oSIP 的缺点........................................................................................................................13
4. oSIP 应用结构图..........................................................................................................................13
5. oSIP 使用概述..............................................................................................................................14
5.1 初始化 oSIP........................................................................................................................14
5.2 注册 CALL BACK 函数.....................................................................................................15
5.3 Transaction 操作.................................................................................................................17
6. 参考...............................................................................................................................................17
剩余17页未读，继续阅读
znsky
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