public async Task <CompletionReason> ServeConnection(TaskCompletionSource <TimeSpan?> timeoutCompletionSource = null, CancellationToken cancellationToken = default(CancellationToken))
{
timeoutCompletionSource = timeoutCompletionSource ?? new TaskCompletionSource <TimeSpan?>();
try
{
BuildRequest request;
try
{
Log("Begin reading request.");
request = await _clientConnection.ReadBuildRequest(cancellationToken).ConfigureAwait(false);
Log("End reading request.");
}
catch (Exception e)
{
LogException(e, "Error reading build request.");
return(CompletionReason.CompilationNotStarted);
}
CheckForNewKeepAlive(request, timeoutCompletionSource);
// Kick off both the compilation and a task to monitor the pipe for closing.
var buildCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
var compilationTask = ServeBuildRequest(request, buildCts.Token);
var monitorTask = _clientConnection.CreateMonitorDisconnectTask(buildCts.Token);
await Task.WhenAny(compilationTask, monitorTask).ConfigureAwait(false);
// Do an 'await' on the completed task, preference being compilation, to force
// any exceptions to be realized in this method for logging.
CompletionReason reason;
if (compilationTask.IsCompleted)
{
var response = await compilationTask.ConfigureAwait(false);
try
{
Log("Begin writing response.");
await _clientConnection.WriteBuildResponse(response, cancellationToken).ConfigureAwait(false);
reason = CompletionReason.Completed;
Log("End writing response.");
}
catch
{
reason = CompletionReason.ClientDisconnect;
}
}
else
{
await monitorTask.ConfigureAwait(false);
reason = CompletionReason.ClientDisconnect;
}
// Begin the tear down of the Task which didn't complete.
buildCts.Cancel();
return(reason);
}
finally
{
_clientConnection.Close();
// Ensure that the task is completed. If the code previously added a real result this will
// simply be a nop.
timeoutCompletionSource.TrySetResult(null);
}
}
public async Task <ConnectionData> ServeConnection(CancellationToken cancellationToken = default(CancellationToken))
{
try
{
BuildRequest request;
try
{
Log("Begin reading request.");
request = await _clientConnection.ReadBuildRequest(cancellationToken).ConfigureAwait(false);
Log("End reading request.");
}
catch (Exception e)
{
LogException(e, "Error reading build request.");
return(new ConnectionData(CompletionReason.CompilationNotStarted));
}
var keepAlive = CheckForNewKeepAlive(request);
// Kick off both the compilation and a task to monitor the pipe for closing.
var buildCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
var compilationTask = ServeBuildRequest(request, buildCts.Token);
var monitorTask = _clientConnection.CreateMonitorDisconnectTask(buildCts.Token);
await Task.WhenAny(compilationTask, monitorTask).ConfigureAwait(false);
// Do an 'await' on the completed task, preference being compilation, to force
// any exceptions to be realized in this method for logging.
CompletionReason reason;
if (compilationTask.IsCompleted)
{
var response = await compilationTask.ConfigureAwait(false);
try
{
Log("Begin writing response.");
await _clientConnection.WriteBuildResponse(response, cancellationToken).ConfigureAwait(false);
reason = CompletionReason.Completed;
Log("End writing response.");
}
catch
{
reason = CompletionReason.ClientDisconnect;
}
}
else
{
await monitorTask.ConfigureAwait(false);
reason = CompletionReason.ClientDisconnect;
}
// Begin the tear down of the Task which didn't complete.
buildCts.Cancel();
return(new ConnectionData(reason, keepAlive));
}
finally
{
_clientConnection.Close();
}
}