private static async Task <OriginateResult> InternalOriginate(EventSocket socket, string endpoint, string destination, OriginateOptions options = null)
{
if (options == null)
{
options = new OriginateOptions();
}
// if no UUID provided, we'll set one now and use that to filter for the correct channel events
// this way, one inbound socket can originate many calls and we can complete the correct
// TaskCompletionSource for each originated call.
if (string.IsNullOrEmpty(options.UUID))
{
options.UUID = Guid.NewGuid().ToString();
}
await socket.SubscribeEvents(EventName.ChannelAnswer, EventName.ChannelHangup, EventName.ChannelProgress).ConfigureAwait(false);
var originateString = string.Format("{0}{1} {2}", options, endpoint, destination);
return
(await
socket.BackgroundJob("originate", originateString)
.ToObservable()
.Merge(
socket.ChannelEvents.FirstAsync(
x =>
x.UUID == options.UUID &&
(x.EventName == EventName.ChannelAnswer || x.EventName == EventName.ChannelHangup ||
(options.ReturnRingReady && x.EventName == EventName.ChannelProgress))).Cast <BasicMessage>())
.FirstAsync(x => (x is BackgroundJobResult && !((BackgroundJobResult)x).Success) || x is ChannelEvent)
.Select(OriginateResult.FromBackgroundJobResultOrChannelEvent) // pattern matching, my kingdom for pattern matching
.ToTask()
.ConfigureAwait(false));
}
protected Channel(EventMessage eventMessage, EventSocket eventSocket) : base(eventMessage, eventSocket)
{
eventSocket.SubscribeEvents(EventName.ChannelCreate).Wait();
Disposables.Add(
eventSocket.Events.Where(x => x.UUID == UUID && x.EventName == EventName.ChannelBridge).Subscribe(
x =>
{
Log.Trace(() => "Channel [{0}] Bridged to [{1}]".Fmt(UUID, x.GetHeader(HeaderNames.OtherLegUniqueId)));
if (Bridge.Channel != null && x.GetHeader(HeaderNames.OtherLegUniqueId) != Bridge.Channel.UUID)
{
//possibly changed bridge partner as part of att_xfer
Log.Warn(() => "Channel [{0}] was Bridged to [{1}] but now changed to [{2}]".Fmt(UUID, Bridge.Channel.UUID, x.UUID));
Bridge.Channel.Dispose();
Bridge = new BridgeStatus(true, "TRANSFERRED", new BridgedChannel(x, eventSocket));
}
}));
Disposables.Add(
eventSocket.Events.Where(x => x.UUID == UUID && x.EventName == EventName.ChannelUnbridge).Subscribe(
x => Log.Trace(() => "Channel [{0}] Unbridged from [{1}] {2}".Fmt(UUID, Bridge.Channel.UUID, x.GetVariable("bridge_hangup_cause")))));
Disposables.Add(
eventSocket.Events.Where(x => x.EventName == EventName.ChannelBridge &&
x.UUID != UUID &&
x.GetHeader(HeaderNames.OtherLegUniqueId) == UUID &&
(Bridge.Channel != null && x.UUID != Bridge.Channel.UUID))
.Subscribe(x =>
{
//there is another channel out there that has bridged to us but we didn't get the CHANNEL_BRIDGE event on this channel
//possibly an attended transfer. We'll swap our bridge partner so we can get its events
Log.Warn(() => "Channel [{0}] was Bridged to [{1}] but now changed to [{2}]".Fmt(UUID, Bridge.Channel.UUID, x.UUID));
Bridge.Channel.Dispose();
Bridge = new BridgeStatus(true, "TRANSFERRED", new BridgedChannel(x, eventSocket));
}));
if (this.eventSocket is OutboundSocket)
{
Disposables.Add(
eventSocket.Events.Where(x => x.UUID == UUID && x.EventName == EventName.ChannelHangup)
.Subscribe(async e =>
{
if (ExitOnHangup)
{
await eventSocket.Exit();
Log.Info(() => "Channel [{0}] exited".Fmt(UUID));
}
}));
}
//populate empty bridge status
Bridge = new BridgeStatus(false, null);
ExitOnHangup = true;
}
public Task StartDetectingInbandDtmf()
{
return(RunIfAnswered(
async() =>
{
await eventSocket.SubscribeEvents(EventName.Dtmf).ConfigureAwait(false);
await eventSocket.StartDtmf(UUID).ConfigureAwait(false);
}));
}
public async Task StartDetectingInbandDtmf()
{
if (!IsAnswered)
{
return;
}
await eventSocket.SubscribeEvents(EventName.Dtmf);
await eventSocket.StartDtmf(UUID);
}
private static async Task <OriginateResult> InternalOriginate(EventSocket socket, string endpoint, string destination, OriginateOptions options = null)
{
if (options == null)
{
options = new OriginateOptions();
}
var originateString = $"{options}{endpoint} {destination}";
await socket.SubscribeEvents(EventName.BackgroundJob).ConfigureAwait(false);
return
(await
socket.BackgroundJob("originate", originateString)
.ToObservable()
.Select(OriginateResult.FromBackgroundJobResultOrChannelEvent)
.ToTask()
.ConfigureAwait(false));
}
protected Channel(EventMessage eventMessage, EventSocket eventSocket) : base(eventMessage, eventSocket)
{
//populate empty bridge status
Bridge = new BridgeStatus(false, null);
ExitOnHangup = true;
Task.WhenAll(
new[]
{
eventSocket.SubscribeEvents(), //subscribe to minimum events
eventSocket.Filter(HeaderNames.UniqueId, UUID), //filter for our unique id (in case using full socket mode)
eventSocket.Filter(HeaderNames.OtherLegUniqueId, UUID) //filter for channels bridging to our unique id
}).ContinueWith(
t =>
{
if (t.IsFaulted && t.Exception != null)
{
Log.ErrorException("Channel [{0}] - failed to configure outbound socket for Channel usage".Fmt(UUID), t.Exception.InnerException);
return;
}
this.InitializeSubscriptions();
});
}
