public async Task <Stream> ConnectIpcStreamAsync(CancellationToken token)
{
Stream ipcClientStream = null;
_logger?.LogDebug($"Connecting new ipc endpoint \"{_ipcClientPath}\".");
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
var namedPipe = new NamedPipeClientStream(
".",
_ipcClientPath,
PipeDirection.InOut,
PipeOptions.Asynchronous,
TokenImpersonationLevel.Impersonation);
try
{
await namedPipe.ConnectAsync(IpcClientTimeoutMs, token).ConfigureAwait(false);
}
catch (Exception ex)
{
namedPipe?.Dispose();
if (ex is TimeoutException)
{
_logger?.LogDebug("No ipc stream connected, timing out.");
}
throw;
}
ipcClientStream = namedPipe;
}
else
{
bool retry = false;
IpcUnixDomainSocket unixDomainSocket;
using var connectTimeoutTokenSource = new CancellationTokenSource();
using var connectTokenSource = CancellationTokenSource.CreateLinkedTokenSource(token, connectTimeoutTokenSource.Token);
connectTimeoutTokenSource.CancelAfter(IpcClientTimeoutMs);
do
{
unixDomainSocket = new IpcUnixDomainSocket();
try
{
await unixDomainSocket.ConnectAsync(new IpcUnixDomainSocketEndPoint(_ipcClientPath), token).ConfigureAwait(false);
retry = false;
}
catch (Exception)
{
unixDomainSocket?.Dispose();
if (connectTimeoutTokenSource.IsCancellationRequested)
{
_logger?.LogDebug("No ipc stream connected, timing out.");
throw new TimeoutException();
}
_logger?.LogTrace($"Failed connecting {_ipcClientPath}, wait {IpcClientRetryTimeoutMs} ms before retrying.");
// If we get an error (without hitting timeout above), most likely due to unavailable listener.
// Delay execution to prevent to rapid retry attempts.
await Task.Delay(IpcClientRetryTimeoutMs, token).ConfigureAwait(false);
retry = true;
}
}while (retry);
ipcClientStream = new ExposedSocketNetworkStream(unixDomainSocket, ownsSocket: true);
}
if (ipcClientStream != null)
{
_logger?.LogDebug("Successfully connected ipc stream.");
}
return(ipcClientStream);
}
protected async Task <Stream> ConnectIpcStreamAsync(CancellationToken token)
{
Stream ipcClientStream = null;
Logger.LogDebug($"Connecting new ipc endpoint \"{_ipcClientPath}\".");
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
var namedPipe = new NamedPipeClientStream(
".",
_ipcClientPath,
PipeDirection.InOut,
PipeOptions.Asynchronous,
TokenImpersonationLevel.Impersonation);
try
{
await namedPipe.ConnectAsync(IpcClientTimeoutMs, token).ConfigureAwait(false);
}
catch (Exception ex)
{
namedPipe?.Dispose();
if (ex is TimeoutException)
{
Logger.LogDebug("No ipc stream connected, timing out.");
}
throw;
}
ipcClientStream = namedPipe;
}
else
{
bool retry = false;
IpcUnixDomainSocket unixDomainSocket;
do
{
unixDomainSocket = new IpcUnixDomainSocket();
using var connectTimeoutTokenSource = new CancellationTokenSource();
using var connectTokenSource = CancellationTokenSource.CreateLinkedTokenSource(token, connectTimeoutTokenSource.Token);
try
{
connectTimeoutTokenSource.CancelAfter(IpcClientTimeoutMs);
await unixDomainSocket.ConnectAsync(new IpcUnixDomainSocketEndPoint(_ipcClientPath), token).ConfigureAwait(false);
retry = false;
}
catch (Exception)
{
unixDomainSocket?.Dispose();
if (connectTimeoutTokenSource.IsCancellationRequested)
{
Logger.LogDebug("No ipc stream connected, timing out.");
throw new TimeoutException();
}
Logger.LogTrace($"Failed connecting {_ipcClientPath}, wait {IpcClientRetryTimeoutMs} ms before retrying.");
// If we get an error (without hitting timeout above), most likely due to unavailable listener.
// Delay execution to prevent to rapid retry attempts.
await Task.Delay(IpcClientRetryTimeoutMs, token).ConfigureAwait(false);
if (IpcClientTimeoutMs != Timeout.Infinite)
{
throw;
}
retry = true;
}
}while (retry);
ipcClientStream = new ExposedSocketNetworkStream(unixDomainSocket, ownsSocket: true);
}
try
{
// ReversedDiagnosticsServer consumes advertise message, needs to be replayed back to ipc client stream. Use router process ID as representation.
await IpcAdvertise.SerializeAsync(ipcClientStream, RuntimeInstanceId, (ulong)Process.GetCurrentProcess().Id, token).ConfigureAwait(false);
}
catch (Exception)
{
Logger.LogDebug("Failed sending advertise message.");
ipcClientStream?.Dispose();
throw;
}
if (ipcClientStream != null)
{
Logger.LogDebug("Successfully connected ipc stream.");
}
return(ipcClientStream);
}