private static Task <bool> PlaceCall(CancellationToken cancel)
{
// Set up a default SIP transport.
var sipTransport = new SIPTransport();
//EnableTraceLogs(sipTransport);
var targetUri = SIPURI.ParseSIPURI(TARGET_DST);
int requestedDtmfCode = Crypto.GetRandomInt(4);
targetUri.User = requestedDtmfCode.ToString();
SIPUserAgent ua = new SIPUserAgent(sipTransport, null, true);
CallRecord cr = new CallRecord {
UA = ua, RequestedDtmfCode = requestedDtmfCode, ReceivedDtmfCode = ""
};
TaskCompletionSource <bool> dtmfComplete = new TaskCompletionSource <bool>(TaskCreationOptions.RunContinuationsAsynchronously);
// Place an outgoing call.
ua.ClientCallTrying += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Trying: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.ClientCallRinging += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Ringing: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.ClientCallFailed += (uac, err, resp) => Log.LogWarning($"{uac.CallDescriptor.To} Failed: {err}, Status code: {resp?.StatusCode}");
ua.ClientCallAnswered += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Answered: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.OnDtmfTone += (key, duration) =>
{
cr.ReceivedDtmfCode = cr.ReceivedDtmfCode.Insert(0, key.ToString());
Log.LogInformation($"Received DTMF tone {key} {cr.ReceivedDtmfCode}.");
if (cr.ReceivedDtmfCode == cr.RequestedDtmfCode.ToString())
{
dtmfComplete.SetResult(true);
}
};
//ua.OnRtpEvent += (evt, hdr) => Log.LogDebug($"transferee rtp event {evt.EventID}, ssrc {hdr.SyncSource}, duration {evt.Duration}, end of event {evt.EndOfEvent}, timestamp {hdr.Timestamp}, marker {hdr.MarkerBit}.");
ua.OnCallHungup += (dialog) => Log.LogDebug("Call hungup by remote party.");
var rtpSession = CreateRtpSession();
var callTask = ua.Call(targetUri.ToString(), null, null, rtpSession);
bool dtmfResult = false;
bool didComplete = Task.WaitAll(new Task[] { callTask }, TIMEOUT_MILLISECONDS, cancel);
if (!didComplete || !callTask.Result)
{
Log.LogWarning($"Call to {targetUri} failed.");
}
else
{
Log.LogInformation($"Call to {targetUri} was successful.");
_calls.TryAdd(ua.Dialogue.CallId, cr);
if (Task.WaitAll(new Task[] { dtmfComplete.Task }, TIMEOUT_MILLISECONDS, cancel))
{
dtmfResult = dtmfComplete.Task.Result;
}
else
{
Log.LogWarning("Timeout waiting for DTMF task to complete.");
}
ua.Hangup();
}
return(Task.FromResult(dtmfResult));
//return Task.FromResult(true);
}
/// <summary>
/// Process user key presses.
/// </summary>
/// <param name="exit">The cancellation token to set if the user requests to quit the application.</param>
private static void OnKeyPress(CancellationTokenSource exitCts)
{
try
{
while (!exitCts.IsCancellationRequested)
{
var keyProps = Console.ReadKey();
if (keyProps.KeyChar == 'c')
{
// Set up a default SIP transport.
var sipTransport = new SIPTransport();
//EnableTraceLogs(sipTransport);
var targetUri = SIPURI.ParseSIPURI(TARGET_DST);
int requestedDtmfCode = Crypto.GetRandomInt(4);
targetUri.User = requestedDtmfCode.ToString();
SIPUserAgent ua = new SIPUserAgent(sipTransport, null, true);
CallRecord cr = new CallRecord {
UA = ua, RequestedDtmfCode = requestedDtmfCode, ReceivedDtmfCode = ""
};
// Place an outgoing call.
ua.ClientCallTrying += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Trying: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.ClientCallRinging += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Ringing: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.ClientCallFailed += (uac, err, resp) => Log.LogWarning($"{uac.CallDescriptor.To} Failed: {err}, Status code: {resp?.StatusCode}");
ua.ClientCallAnswered += (uac, resp) => Log.LogInformation($"{uac.CallDescriptor.To} Answered: {resp.StatusCode} {resp.ReasonPhrase}.");
ua.OnDtmfTone += (key, duration) =>
{
cr.ReceivedDtmfCode = cr.ReceivedDtmfCode.Insert(0, key.ToString());
Log.LogInformation($"Received DTMF tone {key} {cr.ReceivedDtmfCode}.");
};
//ua.OnRtpEvent += (evt, hdr) => Log.LogDebug($"transferee rtp event {evt.EventID}, ssrc {hdr.SyncSource}, duration {evt.Duration}, end of event {evt.EndOfEvent}, timestamp {hdr.Timestamp}, marker {hdr.MarkerBit}.");
ua.OnCallHungup += (dialog) => Log.LogDebug("Call hungup by remote party.");
Task.Run(async() =>
{
var rtpSession = CreateRtpSession();
var callResult = await ua.Call(targetUri.ToString(), null, null, rtpSession);
if (!callResult)
{
Log.LogWarning($"Call to {targetUri} failed.");
}
else
{
Log.LogInformation($"Call to {targetUri} was successful.");
_calls.TryAdd(ua.Dialogue.CallId, cr);
}
});
}
else if (keyProps.KeyChar == 'h')
{
if (_calls.Count == 0)
{
Log.LogWarning("There are no active calls.");
}
else
{
var oldestCall = _calls.OrderBy(x => x.Value.UA.Dialogue.Inserted).First();
Log.LogInformation($"Hanging up call {oldestCall.Key}.");
oldestCall.Value.UA.OnCallHungup -= OnHangup;
oldestCall.Value.UA.Hangup();
_calls.TryRemove(oldestCall.Key, out _);
}
}
else if (keyProps.KeyChar == 'H')
{
if (_calls.Count == 0)
{
Log.LogWarning("There are no active calls.");
}
else
{
foreach (var call in _calls)
{
Log.LogInformation($"Hanging up call {call.Key}.");
call.Value.UA.OnCallHungup -= OnHangup;
call.Value.UA.Hangup();
}
_calls.Clear();
}
}
else if (keyProps.KeyChar == 'l')
{
if (_calls.Count == 0)
{
Log.LogInformation("There are no active calls.");
}
else
{
Log.LogInformation("Current call list:");
foreach (var call in _calls)
{
int duration = Convert.ToInt32(DateTimeOffset.Now.Subtract(call.Value.UA.Dialogue.Inserted).TotalSeconds);
uint rtpSent = (call.Value.UA.MediaSession as RtpAudioSession).RtpPacketsSent;
uint rtpRecv = (call.Value.UA.MediaSession as RtpAudioSession).RtpPacketsReceived;
Log.LogInformation($"{call.Key}: {call.Value.UA.Dialogue.RemoteTarget}, req code {call.Value.RequestedDtmfCode}, recvd code {call.Value.ReceivedDtmfCode}, dur {duration}s, rtp sent/recvd {rtpSent}/{rtpRecv}");
}
}
}
else if (keyProps.KeyChar == 'q')
{
// Quit application.
Log.LogInformation("Quitting");
exitCts.Cancel();
break;
}
}
}
catch (Exception excp)
{
Log.LogError($"Exception OnKeyPress. {excp.Message}.");
}
}