最全Asterisk代码学习笔记

Asterisk 代码学习笔记

Asterisk 代码学习笔记

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Asterisk1.2

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1、配置文件参数读取相关的

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5、app_queue.c/wait_for_answer

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6、发送 183 和播放彩铃代码流程

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7、frame.c/ast_smoother

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8、app_queue.c

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9、manager.c/init_manager

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13、music on hold

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14、chan_sip.c/sip_new

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Asterisk1.4

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1、A 打 B 简单通话的代码流程

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2、熟悉代码流程

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6、 Asterisk 架构

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Asterisk 代码架构概述

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1 引言

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2 模块构架

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3 抽象接口类型

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4 Asterisk 线程模型

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6 代码流程实例

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7 Asterisk 数据结构

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8 Asterisk 调试工具

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Asterisk 内核框架

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二、asterisk 启动过程

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三、asterisk 基本呼叫流程

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四、详细呼叫流程分析

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深入浅出 asterisk:app.c 代码分析

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三. 修改所有配置文件

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四.在 Mysql 数据库中新建数据数据库、表

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2.模拟信令

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3. 恼人的忙音识别和拆线

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4.CLID(主叫号码)

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5.DTMF

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2 针对 yum 安装的方式就更加简单了

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Asterisk Source Code Control With SVN

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Asterisk cli 命令

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Dialplan

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1、监听和强插

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4、在 Dialplan 里实现 Find-Me-Follow-Me 功能

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->gettag

->sip_alloc//找不到/不存在，就分配一个,这里的是主叫的 sip_pvt

->__sip_semi_ack->__sip_ack

->send_request-> __sip_xmit-> sendto

-> handle_response_invite-> handle_request_options

-> handle_request_refer-> handle_request_cancel

//当收到 invite 时，会调用 handle_request_invite

->handle_request_invite-> transmit_response_with_unsupported->respprep

-> init_resp-> copy_via_headers-> __get_header-> copy_all_header

-> __get_header-> add_header-> copy_header->send_response-> parse_copy

->append_history-> __sip_xmit-> sendto-> transmit_response

->check_user->check_user_full->find_peer->realtime_peer

->ast_load_realtime->check_auth_first->sip_new//分配主叫的 ast_channel

-> build_route->ast_pbx_start 创建一个线程运行 pbx_thread

pbx_thread-> __ast_pbx_run-> ast_exists_extension-> pbx_extension_helper

dial_exec->dial_exec_full->ast_request(sip_request_call)-> sip_alloc//这里是被叫的 sip_pvt

-> sip_new//分配被叫的 ast_channel->create_addr->find_peer-> realtime_peer

-> ast_load_realtime-> build_peer-> handle_common_options->sched.c/ast_sched_del