public override async Task<AcdActionResult> Execute(LocalEndpoint localEndpoint, AudioVideoCall call, CancellationToken cancellationToken)
{
if (Endpoint == null)
return AcdActionResult.Continue;
// extract information from incoming caller
var callParticipant = call.RemoteEndpoint.Participant;
var callAddress = new RealTimeAddress(callParticipant.Uri, localEndpoint.DefaultDomain, localEndpoint.PhoneContext);
var callSipUri = new SipUriParser(callAddress.Uri);
callSipUri.RemoveParameter(new SipUriParameter("user", "phone"));
var callUri = callSipUri.ToString();
var callPhoneUri = callParticipant.OtherPhoneUri;
var callName = callParticipant.DisplayName;
// impersonate incoming caller to agent
var remoteConversation = new Conversation(localEndpoint);
remoteConversation.Impersonate(callUri, callPhoneUri, callName);
// establish call to endpoint
var remoteCall = new AudioVideoCall(remoteConversation);
var remoteOpts = new CallEstablishOptions();
remoteOpts.Transferor = localEndpoint.OwnerUri;
remoteOpts.Headers.Add(new SignalingHeader("Ms-Target-Class", "secondary"));
// initiate call with duration
var destCallT = remoteCall.EstablishAsync(Endpoint.Uri, remoteOpts, cancellationToken);
try
{
// wait for agent call to complete
await destCallT;
}
catch (OperationCanceledException)
{
// ignore
}
catch (RealTimeException)
{
// ignore
}
// ensure two accepted transfers cannot both complete
using (var lck = await call.GetContext<AsyncLock>().LockAsync())
if (call.State == CallState.Established)
if (remoteCall.State == CallState.Established)
{
var participant = remoteConversation.RemoteParticipants.FirstOrDefault();
if (participant != null)
{
var endpoint = participant.GetEndpoints().FirstOrDefault(i => i.EndpointType == EndpointType.User);
if (endpoint != null)
{
var ctx = new ConversationContextChannel(remoteConversation, endpoint);
// establish conversation context with application
await ctx.EstablishAsync(
new Guid("FA44026B-CC48-42DA-AAA8-B849BCB43A21"),
new ConversationContextChannelEstablishOptions());
// send context data
await ctx.SendDataAsync(
new ContentType("text/plain"),
Encoding.UTF8.GetBytes("Id=123"));
}
}
return await TransferAsync(call, remoteCall);
}
// terminate outbound call if still available
if (remoteCall.State != CallState.Terminating &&
remoteCall.State != CallState.Terminated)
await remoteCall.TerminateAsync();
// we could not complete the transfer attempt
return AcdActionResult.Continue;
}