public static async Task <ClientWebSocket> ConnectToDevice(this ServiceClient serviceClient, string deviceId, CancellationToken ct, string streamName = "EdgeStream")
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(streamName);
Console.WriteLine($"Connecting to {deviceId}");
DeviceStreamResponse streamInfo = await serviceClient.CreateStreamAsync(deviceId, deviceStreamRequest, ct).ConfigureAwait(false);
Console.WriteLine($"Stream response received: Name={deviceStreamRequest.StreamName} IsAccepted={streamInfo.IsAccepted}");
return(await DeviceStreamWebsocket.MakeWebSocket(streamInfo.Url, streamInfo.AuthorizationToken, ct));
}
public async Task RunSampleAsync()
{
try
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(
streamName: "TestStream"
);
DeviceStreamResponse result = await _serviceClient.CreateStreamAsync(_deviceId, deviceStreamRequest).ConfigureAwait(false);
System.Diagnostics.Debug.WriteLine("Stream response received: Name={0} IsAccepted={1}", deviceStreamRequest.StreamName, result.IsAccepted);
Console.WriteLine("Stream response received: Name={0} IsAccepted={1}", deviceStreamRequest.StreamName, result.IsAccepted);
if (result.IsAccepted)
{
using (var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromMinutes(1)))
using (var stream = await DeviceStreamingCommon.GetStreamingDeviceAsync(result.Url, result.AuthorizationToken, cancellationTokenSource.Token).ConfigureAwait(false))
{
byte[] sendBuffer = Encoding.UTF8.GetBytes("Streaming data over a stream...");
byte[] receiveBuffer = new byte[1024];
await stream.SendAsync(sendBuffer, WebSocketMessageType.Binary, true, cancellationTokenSource.Token).ConfigureAwait(false);
System.Diagnostics.Debug.WriteLine(string.Format("Sent stream data: {0}", Encoding.UTF8.GetString(sendBuffer, 0, sendBuffer.Length)));
Console.WriteLine("Sent stream data: {0}", Encoding.UTF8.GetString(sendBuffer, 0, sendBuffer.Length));
var receiveResult = await stream.ReceiveAsync(receiveBuffer, cancellationTokenSource.Token).ConfigureAwait(false);
System.Diagnostics.Debug.WriteLine(string.Format("Received stream data: {0}", Encoding.UTF8.GetString(receiveBuffer, 0, receiveResult.Count)));
Console.WriteLine("Received stream data: {0}", Encoding.UTF8.GetString(receiveBuffer, 0, receiveResult.Count));
await stream.CloseAsync(WebSocketCloseStatus.NormalClosure, String.Empty, cancellationTokenSource.Token).ConfigureAwait(false);
}
}
else
{
System.Diagnostics.Debug.WriteLine("Stream request was rejected by the device");
Console.WriteLine("Stream request was rejected by the device");
}
}
catch (Exception ex)
{
Console.WriteLine("Got an exception: {0}", ex);
throw;
}
}
private static async void HandleIncomingConnectionsAndCreateStreams(string deviceId, ServiceClient serviceClient, TcpClient tcpClient)
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(
streamName: "ProxyStreamFromSvc"
);
using (var localStream = tcpClient.GetStream())
{
Update("Awaiting connection");
using (cancellationTokenSourceOuter = new CancellationTokenSource())
{
DeviceStreamResponse result = await serviceClient.CreateStreamAsync(deviceId, deviceStreamRequest, cancellationTokenSourceOuter.Token).ConfigureAwait(false);
Update($"Stream response received: Name={deviceStreamRequest.StreamName} IsAccepted={result.IsAccepted}");
if (result.IsAccepted)
{
try
{
using (cancellationTokenSource = new CancellationTokenSource())
using (ClientWebSocket remoteStream = await DeviceStreamingCommon.GetStreamingClientAsync(result.Url, result.AuthorizationToken, cancellationTokenSource.Token).ConfigureAwait(false))
{
Update("Starting streaming");
counter = 0;
await Task.WhenAny(
HandleIncomingDataAsync(localStream, remoteStream, cancellationTokenSource.Token),
HandleOutgoingDataAsync(localStream, remoteStream, cancellationTokenSource.Token)).ConfigureAwait(false);
}
Update("Done streaming");
}
catch (Exception ex)
{
ErrorMsg("Service got an exception: {0}", ex);
}
}
}
}
tcpClient.Close();
}
public async Task RunSampleAsync()
{
try
{
var deviceStreamRequest = new DeviceStreamRequest("TestStream");
DeviceStreamResponse result = await _serviceClient.CreateStreamAsync(_deviceId, deviceStreamRequest);
Console.WriteLine($"Stream response received: Name={deviceStreamRequest.StreamName} IsAccepted={result.IsAccepted}");
if (result.IsAccepted)
{
using var cts = new CancellationTokenSource(TimeSpan.FromMinutes(1));
using ClientWebSocket stream = await DeviceStreamingCommon.GetStreamingClientAsync(result.Uri, result.AuthorizationToken, cts.Token);
byte[] sendBuffer = Encoding.UTF8.GetBytes("Streaming data over a stream...");
byte[] receiveBuffer = new byte[1024];
await stream.SendAsync(sendBuffer, WebSocketMessageType.Binary, true, cts.Token);
Console.WriteLine($"Sent stream data: {Encoding.UTF8.GetString(sendBuffer, 0, sendBuffer.Length)}");
var receiveResult = await stream.ReceiveAsync(receiveBuffer, cts.Token);
Console.WriteLine($"Received stream data: {Encoding.UTF8.GetString(receiveBuffer, 0, receiveResult.Count)}");
await stream.CloseAsync(WebSocketCloseStatus.NormalClosure, "Streaming completed", new CancellationToken());
}
else
{
Console.WriteLine("Stream request was rejected by the device");
}
}
catch (Exception ex)
{
Console.WriteLine($"Got an exception: {ex}");
throw;
}
}
/// <summary>
/// Handle incoming connections and create streams
/// </summary>
/// <param name="deviceId">device Id</param>
/// <param name="serviceClient">service Client</param>
/// <param name="tcpClient">TCP Client</param>
private static async Task HandleIncomingConnectionsAndCreateStreams(string deviceId, ServiceClient serviceClient, TcpClient tcpClient)
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(streamName: "TestStream");
using (var localStream = tcpClient.GetStream())
{
DeviceStreamResponse result = await serviceClient.CreateStreamAsync(deviceId, deviceStreamRequest, CancellationToken.None).ConfigureAwait(false);
if (result.IsAccepted)
{
using (var cancellationTokenSource = new CancellationTokenSource())
using (var remoteStream = await DeviceStreamingHelper.GetStreamingClientAsync(result.Url, result.AuthorizationToken, cancellationTokenSource.Token).ConfigureAwait(false))
{
await Task.WhenAny(
HandleIncomingDataAsync(localStream, remoteStream, cancellationTokenSource.Token),
HandleOutgoingDataAsync(localStream, remoteStream, cancellationTokenSource.Token)).ConfigureAwait(false);
}
}
}
tcpClient.Close();
}
private static async void HandleIncomingConnectionsAndCreateStreams(string deviceId, ServiceClient serviceClient, TcpClient tcpClient)
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(
streamName: "TestStream"
);
using (var localStream = tcpClient.GetStream())
{
DeviceStreamResponse result = await serviceClient.CreateStreamAsync(deviceId, deviceStreamRequest, CancellationToken.None).ConfigureAwait(false);
Console.WriteLine($"Stream response received: Name={deviceStreamRequest.StreamName} IsAccepted={result.IsAccepted}");
if (result.IsAccepted)
{
try
{
using (var cancellationTokenSource = new CancellationTokenSource(new TimeSpan(0, 1, 0)))
using (var remoteStream = await DeviceStreamingCommon.GetStreamingClientAsync(result.Url, result.AuthorizationToken, cancellationTokenSource.Token).ConfigureAwait(false))
{
Console.WriteLine("Starting streaming");
await Task.WhenAny(
HandleIncomingDataAsync(localStream, remoteStream, cancellationTokenSource.Token),
HandleOutgoingDataAsync(localStream, remoteStream, cancellationTokenSource.Token)).ConfigureAwait(false);
}
Console.WriteLine("Done streaming");
}
catch (Exception ex)
{
Console.WriteLine("Got an exception: {0}", ex);
}
}
}
tcpClient.Close();
}
private async Task RunSvcAsync()
{
string errorMsg = "";
string updateMsg = "";
using (cancellationTokenSourceManual = new CancellationTokenSource())
{
ClientWebSocket stream = null;
try
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(
streamName: "TestStream"
);
updateMsg = "Starting Svc TestStream";
UpdateStatus(updateMsg);
cancellationTokenSourceManual.Token.Register(() =>
{
_serviceClient?.CloseAsync();
_serviceClient?.Dispose();
});
DeviceStreamResponse result = await _serviceClient.CreateStreamAsync(_deviceId, deviceStreamRequest).ConfigureAwait(false);
updateMsg = string.Format("Svc Stream response received: Name={0} IsAccepted={1}", deviceStreamRequest.StreamName, result.IsAccepted);
UpdateStatus(updateMsg);
if (result.IsAccepted)
{
using (cancellationTokenSourceTimeout = new CancellationTokenSource(DeviceStreamingCommon.DeviceTimeout))
{
try
{
using (stream = await DeviceStreamingCommon.GetStreamingDeviceAsync(result.Url, result.AuthorizationToken, cancellationTokenSourceTimeout.Token).ConfigureAwait(false))
{
updateMsg = "Stream is open.";
UpdateStatus(updateMsg);
bool keepAlive = false;
MsgOutWaitHandle = new AutoResetEvent(true);
do
{
//Nb: Not waited on first entry as waiting for msgOut, which we already have.
updateMsg = "Stream is open. Waiting for msg to send.";
UpdateStatus(updateMsg);
MsgOutWaitHandle.WaitOne();
updateMsg = "Sending msg.";
UpdateStatus(updateMsg);
bool caught = false;
try
{
MsgOut = SvcCurrentSettings.ProcessMsgOut(MsgOut, SvcCurrentSettings.KeepAlive, SvcCurrentSettings.ResponseExpected, DevKeepListening, DevAutoStart);
} catch (NotImplementedException)
{
errorMsg += "DeviceCurrentSettings not properly implemented";
keepAlive = false;
caught = true;
}
if (!caught)
{
await SendMsg(stream, MsgOut, cancellationTokenSourceTimeout);
updateMsg = "Sent msg.";
UpdateStatus(updateMsg);
if (this.SvcCurrentSettings.ResponseExpected)
{
byte[] receiveBuffer = new byte[1024];
System.ArraySegment <byte> ReceiveBuffer = new ArraySegment <byte>(receiveBuffer);
var receiveResult = await stream.ReceiveAsync(ReceiveBuffer, cancellationTokenSourceTimeout.Token).ConfigureAwait(false);
MsgIn = Encoding.UTF8.GetString(receiveBuffer, 0, receiveResult.Count);
string subStrn = AzIoTHubDeviceStreams.DeviceStreamingCommon.DeiceInSimuatedDeviceModeStrn;
int subStrnLen = subStrn.Length;
if (MsgIn.Length >= subStrnLen)
{
if (MsgIn.Substring(0, subStrnLen) == subStrn)
{
MsgIn = MsgIn.Substring(subStrnLen);
AzIoTHubModules.SyntheticIoTMessage iotHubMessage = AzIoTHubModules.SyntheticIoTMessage.Deserialize(MsgIn);
Microsoft.Azure.Devices.Client.Message message = iotHubMessage.ToMessage();
Microsoft.Azure.EventHubs.EventData eventData = AzIoTHubModules.SyntheticIoTMessage.ToEventData(message);
MsgIn = AzIoTHubModules.SyntheticIoTMessage.EventData_ToString(eventData);
}
}
keepAlive = false;
if (SvcCurrentSettings != null)
{
keepAlive = this.SvcCurrentSettings.KeepAlive;
}
try
{
if (OnRecvdTextD != null)
{
OnRecvdTextD(MsgIn);
}
}
catch (Exception exx)
{
errorMsg += "OnRecvdTextD not properly implemented: " + exx.Message;
keepAlive = false;
}
updateMsg = string.Format("Svc Received stream data: {0}", MsgIn);
UpdateStatus(updateMsg);
}
MsgOutWaitHandle.Reset();
}
} while (keepAlive);
MsgOutWaitHandle = null;
updateMsg = "Closing Svc Socket";
UpdateStatus(updateMsg);
await stream.CloseAsync(WebSocketCloseStatus.NormalClosure, String.Empty, cancellationTokenSourceTimeout.Token).ConfigureAwait(false);
stream = null;
}
}
catch (Microsoft.Azure.Devices.Client.Exceptions.IotHubCommunicationException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Hub connection failure");
errorMsg = "Hub connection failure";
}
catch (Microsoft.Azure.Devices.Common.Exceptions.DeviceNotFoundException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Device not found");
errorMsg = "Device not found";
}
catch (TaskCanceledException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Task cancelled");
errorMsg = "Task cancelled";
}
catch (OperationCanceledException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Operation cancelled");
errorMsg = "Operation cancelled";
}
catch (Exception ex)
{
if ((bool)cancellationTokenSourceManual?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Cancelled.");
errorMsg = "Cancelled";
}
else if ((bool)cancellationTokenSourceTimeout?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Timed Out.");
errorMsg = "Timed Out";
}
else if (!ex.Message.Contains("Timed out"))
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): " + ex.Message);
errorMsg = ex.Message;
}
else
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed out");
errorMsg = "Timed Out";
}
}
}
}
}
catch (Microsoft.Azure.Devices.Client.Exceptions.IotHubCommunicationException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Hub connection failure");
errorMsg += " Hub connection failure";
}
catch (Microsoft.Azure.Devices.Common.Exceptions.DeviceNotFoundException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Device not found");
errorMsg += " Device not found";
}
catch (TaskCanceledException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Task cancelled");
errorMsg += " Task cancelled";
}
catch (OperationCanceledException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Operation cancelled");
errorMsg += " Operation cancelled";
}
catch (Exception ex)
{ if ((bool)cancellationTokenSourceManual?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Cancelled.");
errorMsg += " Cancelled";
}
else if ((bool)cancellationTokenSourceTimeout?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed Out.");
errorMsg += " Timed Out";
}
else if (!ex.Message.Contains("Timed out"))
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): " + ex.Message);
errorMsg += " " + ex.Message;
}
else
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed out");
errorMsg += " Timed Out";
} };
if (stream != null)
{
if (stream.CloseStatus != WebSocketCloseStatus.NormalClosure)
{
updateMsg = "Aborting Svc Socket as is errant or cancelled: " + errorMsg;
UpdateStatus(updateMsg);
stream.Abort();
updateMsg = "Aborted Svc Socket as was errant or cancelled:" + errorMsg;
UpdateStatus(updateMsg);
}
else
{
updateMsg = "Socket closed normally: " + errorMsg;
UpdateStatus(updateMsg);
}
stream = null;
}
else
{
updateMsg = "Socket closed Normally: " + errorMsg;
UpdateStatus(updateMsg);
}
deviceStream_Svc = null;
MsgOutWaitHandle = null;
cancellationTokenSourceTimeout = null;
}
}