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
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
uuid_getvar abd2d52e-6074-4a46-aa0e-c73d04f566f6 test-var
输出结果,参考下图:
二、ESL Inbound示例代码
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: