生成freeswitch事件的几种方式

生成freeswitch事件的几种方式

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", "1000");switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "callee_num", "1001");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()
endfire_failed_event("86896a7a-3dc3-4175-aaa1-cdcbfd9bd566","1000","1001","exten not avaliable")

fscli中运行：

/event json  CUSTOM calltest1::calltest1_sub
luarun /tmp/1.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": "1474620881330278","Event-Calling-File":   "switch_cpp.cpp","Event-Calling-Function":       "Event","Event-Calling-Line-Number":    "262","Event-Sequence":       "347438","callee_uuid":  "86896a7a-3dc3-4175-aaa1-cdcbfd9bd566","caller_num":   "1000","callee_num":   "1001","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 uuiddef fsapi(session,stream,env,args):event = freeswitch.Event("CUSTOM","calltest1::calltest1_sub")event.addHeader("callee_uuid",str(uuid.uuid4()))event.addHeader("caller_num","1000")event.addHeader("callee_num","1001")event.addHeader("failed_reason","pytest reason")event.fire()soleLog("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 ESLpbxHost,pbxPort = '192.168.1.101','8021'
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","1000")
e.addHeader("callee_num","1001")
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)  
t((pbxHost,pbxPort))
sock.send('auth %srnrn' % pbxAuth)tmsg = "sendevent CUSTOMrn"
tmsg += "Event-Name: CUSTOMrn"
tmsg += "Event-Subclass: calltest1::calltest1_subrn"
tmsg += "callee_uuid: 42e36a32-d6c9-4fac-841d-95bbab9ce2f5rn"
tmsg += "caller_num: 1000rn"
tmsg += "callee_num: 1001rn"
tmsg += "failed_reason: pytest reasonrn"sock.send('%srn' % tmsg)

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