FreeSwitch: ESL Inbound内联模式下如何设置单腿变量
outbound外联模式下,可以参考我先前写的文章:freeswitch: ESL中如何自定义事件及自定义事件的监听,使用export导出变量。但是inbound模式下,ESL client并未封装export命令,如果要给某条腿附加一个变量值,可以借助uuid_setvar命令。
一、命令行验证
1.1 启动freeswitch控制台,手动originate发起呼叫
originate {origination_uuid=abd2d52e-6074-4a46-aa0e-c73d04f566f6}user /1000 &park() |
注:外呼freeswitch内置的1000账号,同时指定该腿的uuid为abd2d52e-6074-4a46-aa0e-c73d04f566f6 (前提:要先用一个网络电话程序,以1000账号注册到freeswitch上)
点击Answer接通,保持这条腿的通话
1.2 设置变量
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uuid_setvar abd2d52e-6074-4a46-aa0e-c73d04f566f6 test -var value-a value-b value-c |
正常的话,会回显+OK
1.3 获取变量
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uuid_getvar abd2d52e-6074-4a46-aa0e-c73d04f566f6 test -var |
输出结果,参考下图:
二、ESL Inbound示例代码
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try { //inbound test final Client inboundClient = new Client(); inboundClient.connect( "localhost" , 8021 , "ClueCon" , 10 ); inboundClient.setEventSubscriptions(EventFormat.PLAIN, "ALL" ); inboundClient.addEventListener( new IInboundEslEventListener() { @Override public void onEslEvent(Context ctx, EslEvent eslEvent) { String eventName = eslEvent.getEventName(); if (eventName.startsWith( "CHANNEL" )) { if (eventName.startsWith( "CHANNEL_ANSWER" )) { //接通时,设置test变量 String uuid = eslEvent.getEventHeaders().get(EslEventConstant.UNIQUE_ID); ctx.sendAsyncApiCommand( "uuid_setvar " + uuid + " test 123123123" ); } if (eventName.startsWith( "CHANNEL_HANGUP_COMPLETE" )) { //挂断时,获取test变量 String testValue = eslEvent.getEventHeaders().get( "variable_test" ); System.out.println( "test:" + testValue); } } } @Override public void onDisconnect(Context ctx, EslMessage eslMsg) { System.out.println( "message:" + eslMsg); } }); } catch (Exception e) { e.printStackTrace(); } |
断点调试结果: