Twilio 调用被不遵守 Twilio.Device.destroy() 的多个设备实例阻止

Question

我正在开发一个 Twilio 应用程序，用户将在 public 终端面前看到一个数字列表。有些是 SIP，有些是传统的。最终用户可能会按下按钮呼叫列表中的一个人，进行对话，然后走开——然后另一个用户会走上前去呼叫另一个人。
我遇到了一个问题，即 Twilio.Device.destroy 没有消除所有正在播放的设备，并且示例中的第二个用户最终会调用第一个用户的目标。
首先是代码，然后是日志：
按钮挂钩：

$('.twilio-voice').click(function() {
    var toNum = this.value;
    console.log('To num in jq');
    console.log(toNum);
    makeVoiceCall(toNum);
});

makeVoiceCall 函数：

var makeVoiceCall = function(toNum) {
    console.log('To Num Is:');
    console.log(toNum);
    if(localStorage.token == undefined) {
        console.log("In If");
        getVoiceToken(toNum);
    } else {
        console.log("In Else");
        console.log(localStorage.token);
        Twilio.Device.setup(localStorage.token, {debug: true});
        Twilio.Device.ready(function(device){
            console.log('IN READY TO NUM IS');
            console.log(toNum);
            Twilio.Device.connect({"To": toNum});
        });
        Twilio.Device.error(function(error) {
            console.log(error.message);
            if(error.message == 'JWT Token Expired') {
                getVoiceToken(toNum);
            };
        });
    }
};

有一个事件侦听器在 Twilio.Device.connect 上启动模态，它创建一个模态按钮，当按下时，它会创建一个模态按钮和一个断开事件侦听器，这两个事件侦听器都调用挂断函数：

function hangup() {
    Twilio.Device.disconnectAll();
    Twilio.Device.destroy();
};

我试过添加 Twilio.Device.destroy();在 makeVoiceCall 的开头，在 Twilio.Device.ready() 内；在 else 语句的顶部，它们似乎没有任何效果。如果我单击一个传统号码，然后单击一个 sip 号码，日志如下所示。传统号码被呼叫两次。如果先拨SIP号码，再拨传统号码再拨。在此示例中，当页面加载时，localStorage 中已经有一个令牌。

To num in jq
ts:1214 +15555555555
ts:1178 To Num Is:
ts:1179 +15555555555
ts:1190 In Else
ts:1191 
[Whosebug EDIT: console logged token removed]
twilio.min.js:71 Device.sounds is deprecated and will be removed in the next 
breaking release. Please use the new functionality available on 
Device.audio.
m.defaultWarnHandler @ twilio.min.js:71
m.deprecated @ twilio.min.js:71
(anonymous) @ twilio.min.js:72
l @ twilio.min.js:71
a @ twilio.min.js:39
setup @ twilio.min.js:59
makeVoiceCall @ ts:1192
(anonymous) @ ts:1215
dispatch @ jquery-2.1.3.min.js:3
r.handle @ jquery-2.1.3.min.js:3
twilio.min.js:70 [Device] Setting up PStream
twilio.min.js:70 [WSTransport] Opening socket
twilio.min.js:70 [WSTransport] attempting to connect
twilio.min.js:70 [WSTransport] Socket opened
twilio.min.js:70 [PStream] Setting token and publishing listen
twilio.min.js:70 [Device] Stream is ready
ts:1194 IN READY TO NUM IS
ts:1195 +15555555555
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "have-local-offer"
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "stable"
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "checking"
xb @ jquery-2.1.3.min.js:3
get @ jquery-2.1.3.min.js:3
css @ jquery-2.1.3.min.js:3
get @ jquery-2.1.3.min.js:3
cur @ jquery-2.1.3.min.js:3
init @ jquery-2.1.3.min.js:3
Kb @ jquery-2.1.3.min.js:3
createTween @ jquery-2.1.3.min.js:3
Rb.* @ jquery-2.1.3.min.js:3
Ub @ jquery-2.1.3.min.js:3
Vb @ jquery-2.1.3.min.js:3
Xb @ jquery-2.1.3.min.js:3
g @ jquery-2.1.3.min.js:3
dequeue @ jquery-2.1.3.min.js:3
(anonymous) @ jquery-2.1.3.min.js:3
each @ jquery-2.1.3.min.js:2
each @ jquery-2.1.3.min.js:2
queue @ jquery-2.1.3.min.js:3
animate @ jquery-2.1.3.min.js:3
n.fn.(anonymous function) @ jquery-2.1.3.min.js:3
addModal @ ts:974
(anonymous) @ ts:1024
a.emit @ twilio.min.js:162
(anonymous) @ twilio.min.js:48
c @ twilio.min.js:165
a.emit @ twilio.min.js:163
mediaStream.onopen @ twilio.min.js:21
a.version.pc.onsignalingstatechange @ twilio.min.js:119
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "completed"
twilio.min.js:70 [Connection] Disconnecting...
twilio.min.js:70 [PStream] Closing PStream
twilio.min.js:70 [WSTransport] Closing socket
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "closed"
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "closed"
twilio.min.js:158 WebSocket connection to 'wss://chunderw-vpc-gll.twilio.com/signal' failed: Close received after close
l._connect @ twilio.min.js:158
l.open @ twilio.min.js:157
a @ twilio.min.js:78
a @ twilio.min.js:75
a._setupStream @ twilio.min.js:54
a.register @ twilio.min.js:50
a @ twilio.min.js:46
setup @ twilio.min.js:59
makeVoiceCall @ ts:1192
(anonymous) @ ts:1215
dispatch @ jquery-2.1.3.min.js:3
r.handle @ jquery-2.1.3.min.js:3
twilio.min.js:70 [WSTransport] Socket received error: undefined
twilio.min.js:70 [WSTransport] Socket closed
twilio.min.js:70 [Device] Stream is offline
ts:1213 To num in jq
ts:1214 sip:test@sipexample.info
ts:1178 To Num Is:
ts:1179 sip:test@sipexample.info
ts:1190 In Else
ts:1191 [Whosebug EDIT: token console.logged]
twilio.min.js:70 [Device] Found existing Device; using new token but ignoring options
twilio.min.js:70 [Device] Setting up PStream
twilio.min.js:70 [WSTransport] Opening socket
twilio.min.js:70 [WSTransport] attempting to connect
twilio.min.js:70 [WSTransport] Socket opened
twilio.min.js:70 [PStream] Setting token and publishing listen
twilio.min.js:70 [Device] Stream is ready
[Whosebug EDIT: HERE IS WHERE TWO DEVICES ARE CALLED BY ONE Twilio.Device.setup()]
ts:1194 IN READY TO NUM IS
ts:1195 +15555555555
ts:1194 IN READY TO NUM IS
ts:1195 sip:test@sipexample.info
twilio.min.js:51 Uncaught Error: A Connection is already active
    at a.connect (twilio.min.js:51)
    at Function.connect (twilio.min.js:60)
    at a.<anonymous> (ts:1196)
    at a.emit (twilio.min.js:163)
    at a.<anonymous> (twilio.min.js:55)
    at a.emit (twilio.min.js:163)
    at l.transport.onmessage (twilio.min.js:78)
    at WebSocket.c.onmessage (twilio.min.js:160)
a.connect @ twilio.min.js:51
connect @ twilio.min.js:60
(anonymous) @ ts:1196
a.emit @ twilio.min.js:163
(anonymous) @ twilio.min.js:55
a.emit @ twilio.min.js:163
transport.onmessage @ twilio.min.js:78
c.onmessage @ twilio.min.js:160
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "have-local-offer"
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "stable"
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "checking"
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "completed"
twilio.min.js:70 [Connection] Disconnecting...
twilio.min.js:70 [PStream] Closing PStream
twilio.min.js:70 [WSTransport] Closing socket
twilio.min.js:70 [Twilio.PeerConnection] iceConnectionState is "closed"
twilio.min.js:70 [Twilio.PeerConnection] signalingState is "closed"
twilio.min.js:158 WebSocket connection to 'wss://chunderw-vpc-gll.twilio.com/signal' failed: Close received after close
l._connect @ twilio.min.js:158
l.open @ twilio.min.js:157
a @ twilio.min.js:78
a @ twilio.min.js:75
a._setupStream @ twilio.min.js:54
a.register @ twilio.min.js:50
setup @ twilio.min.js:59
makeVoiceCall @ ts:1192
(anonymous) @ ts:1215
dispatch @ jquery-2.1.3.min.js:3
r.handle @ jquery-2.1.3.min.js:3
twilio.min.js:70 [WSTransport] Socket received error: undefined
twilio.min.js:70 [WSTransport] Socket closed
twilio.min.js:70 [Device] Stream is offline

正如您在日志的底部四分之一看到的那样——由我添加的标记：[Whosebug EDIT: HERE IS WHERE TWO DEVICES ARE CALLED BY ONE Twilio.Device.setup()]，SIP 和传统号码都在单个 Twilio.Device.setup 呼叫期间被呼叫，即使设备通过挂断功能被破坏（我已经尝试过其他点放置Twilio.Device.destroy）。因此，在第二次尝试时，只有原来呼叫的号码才真正接通。
目前，我能想到的唯一解决方法是为列表中的每个人创建单独的函数（这是 DRY 的对立面，并为维护或扩展此代码增加了大量工作）或者在完成通话后重新加载页面（我的雇主不喜欢）。
如果我可以在调用完成后简单地释放/销毁 Twilio 设备，那将对我有很大帮助。我尝试在 ready 内的 Twilio.Device.connect 调用下方放置一个 Twilio.Device.disconnect(function() { Twilio.Device.disconnectAll(); Twilio.Device.destroy();});，结果相同。销毁这些多个设备（或重新使用第一个）的任何帮助都是无价的。

Answer 1

这里是 Twilio 开发人员布道者。

您不必在每次调用后销毁 Twilio.Device。这里实际发生的是，您正在注册多个处理程序，这些处理程序在 Device 变为 ready 时被调用。

我建议稍微重新设计一下。当页面加载时，设置 Twilio 设备。然后侦听离线事件，以便您知道何时重新生成令牌并重新连接到服务。类似于：

function makeVoiceCall(toNum) {
  Twilio.Device.connect({"To": toNum});
}

function setupDevice(token) {
  Twilio.Device.setup(token, { debug: true });
}

function getVoiceToken(callback) {
  $.post('/token', function(data) {
    localStorage.token = data.token;
    callback(token);
  })
}

function init() {
  if(localStorage.token == undefined) {
    getVoiceToken(function(token){ 
      setupDevice(token)
    });
  } else {
    setupDevice(localstorage.token)
  }

  // Ready will setup click handlers.
  Twilio.Device.ready(function() {
    $('.twilio-voice').click(function() {
      var toNum = this.value;
      makeVoiceCall(toNum);
    });
  });

  // offline will remove click handlers, get a new token and setup the device again
  Twilio.Device.offline(function() {
    // unregister click handlers for now
    $('.twilio-voice').off('click');
    getVoiceToken(function(token) {
      setupDevice(token);
    })
  })
}

window.addEventListener('load', init);

我在这里编写了 getVoiceToken 的新版本，以便它 returns 回调中的令牌，我认为这使事情更容易阅读。

如果这有帮助，请告诉我。

Twilio 调用被不遵守 Twilio.Device.destroy() 的多个设备实例阻止

Twilio calls blocked by multiple device instances that do not respect Twilio.Device.destroy()

javascript

jquery

twilio

twilio-click-to-call

twilio-api