本文描述了生成freeswitch事件的几种方式，这里记录下，也方便我以后查阅。
- 操作系统：debian8.5_x64
- freeswitch 版本 ： 1.6.8
在freeswitch代码中加入事件
产生内置事件（以SWITCH_EVENT_MODULE_LOAD为例）：
switch_event_t *event;
if (switch_event_create(&event, SWITCH_EVENT_MODULE_LOAD) == SWITCH_STATUS_SUCCESS)
{
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "type", "endpoint");
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "name", ptr->interface_name);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "key", new_module->key);
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "filename", new_module->filename);
switch_event_fire(&event);
}
产生自定义事件：
if (switch_event_create_subclass(&event,SWITCH_EVENT_CUSTOM,"calltest1::calltest1_sub") == SWITCH_STATUS_SUCCESS)
{
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "callee_uuid", "86896a7a-3dc3-4175-aaa1-cdcbfd9bd566");
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "caller_num", "");
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "callee_num", "");
switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "failed_reason", "exten not avaliable");
switch_event_fire(&event);
}
使用嵌入式脚本生成freeswitch事件
使用lua生成freeswitch事件
/tmp/1.lua内容如下：
function fire_failed_event(callee_uuid,caller_num,callee_num,failed_reason)
local event = freeswitch.Event("CUSTOM","calltest1::calltest1_sub")
event:addHeader("callee_uuid",callee_uuid)
event:addHeader("caller_num",caller_num)
event:addHeader("callee_num",callee_num)
event:addHeader("failed_reason",failed_reason)
event:fire()
end fire_failed_event("86896a7a-3dc3-4175-aaa1-cdcbfd9bd566","","","exten not avaliable")
fscli中运行：
/event json CUSTOM calltest1::calltest1_sub
luarun /tmp/.lua
事件内容如下：
{
"Event-Subclass": "calltest1::calltest1_sub",
"Event-Name": "CUSTOM",
"Core-UUID": "ae0f2919-f45f-450c-8d8f-4c9c555032b6",
"FreeSWITCH-Hostname": "localhost",
"FreeSWITCH-Switchname": "localhost",
"FreeSWITCH-IPv4": "192.168.1.101",
"FreeSWITCH-IPv6": "::1",
"Event-Date-Local": "2016-09-23 16:54:41",
"Event-Date-GMT": "Fri, 23 Sep 2016 08:54:41 GMT",
"Event-Date-Timestamp": "",
"Event-Calling-File": "switch_cpp.cpp",
"Event-Calling-Function": "Event",
"Event-Calling-Line-Number": "",
"Event-Sequence": "",
"callee_uuid": "86896a7a-3dc3-4175-aaa1-cdcbfd9bd566",
"caller_num": "",
"callee_num": "",
"failed_reason": "exten not avaliable"
}
使用python生成freeswitch事件
脚本/usr/local/freeswitch/scripts/test11.py 内容如下：
import freeswitch
import uuid def fsapi(session,stream,env,args):
event = freeswitch.Event("CUSTOM","calltest1::calltest1_sub")
event.addHeader("callee_uuid",str(uuid.uuid4()))
event.addHeader("caller_num","")
event.addHeader("callee_num","")
event.addHeader("failed_reason","pytest reason")
event.fire()
freeswitch.consoleLog("info","fire ")
运行效果参考lua实现的demo
通过ESL发送事件
也可以通过freeswitch的ESL接口的sendEvent函数进行发送事件
ESL库方式
freeswitch提供的有ESL开发库，这里以python为例展示下通过ESL实现事件的发送：
import ESL pbxHost,pbxPort = '192.168.1.101',''
pbxAuth = 'Cluecon' con = ESL.ESLconnection(pbxHost,pbxPort,pbxAuth)
e = ESL.ESLevent("CUSTOM","calltest1::calltest1_sub")
e.addHeader("callee_uuid","42e36a32-d6c9-4fac-841d-95bbab9ce2f5")
e.addHeader("caller_num","")
e.addHeader("callee_num","")
e.addHeader("failed_reason","pytest reason") con.sendEvent(e)
运行效果参考lua实现的demo
使用socket方式
如果在某些场合不适合使用ESL（比如windows下想使用ESL）， 或者发现ESL有bug（之前发现python版的ESL有内存泄漏）， 可以直接使用socket直接发送，示例如下：
import socket pbxHost,pbxPort = '192.168.1.101',8021
pbxAuth = 'ClueCon' sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((pbxHost,pbxPort))
sock.send('auth %s\r\n\r\n' % pbxAuth) tmsg = "sendevent CUSTOM\r\n"
tmsg += "Event-Name: CUSTOM\r\n"
tmsg += "Event-Subclass: calltest1::calltest1_sub\r\n"
tmsg += "callee_uuid: 42e36a32-d6c9-4fac-841d-95bbab9ce2f5\r\n"
tmsg += "caller_num: 1000\r\n"
tmsg += "callee_num: 1001\r\n"
tmsg += "failed_reason: pytest reason\r\n" sock.send('%s\r\n' % tmsg)
运行效果参考lua实现的demo
本文github地址：
https://github.com/mike-zhang/mikeBlogEssays/blob/master/2016/20160927_生成freeswitch事件的几种方式.md
欢迎补充