| public ConnectAsync ( ) : System.Threading.Tasks.Task | ||
| return | System.Threading.Tasks.Task | |
public async void StartClient(string pipeName, CancellationToken cancellationToken)
{
if (pipeName != null && !_configured)
{
Trace.Info("Connecting to named pipe {0}", pipeName);
_outClient = new NamedPipeClientStream(".", pipeName, PipeDirection.Out, PipeOptions.Asynchronous);
await _outClient.ConnectAsync(cancellationToken);
_writeStream = new StreamWriter(_outClient, Encoding.UTF8);
_configured = true;
Trace.Info("Connection successfull to named pipe {0}", pipeName);
}
}
// Asynchronously create a new connection
public async Task<Tuple<Int32, string>> ConnectAsync(string endpoint)
{
// Parse the endpoint. It should be formatted as
// "\\server\pipe\name".
string [] components = endpoint.Split(new char[] { '\\' });
if (components.Length != 5)
{
return Tuple.Create(-1, "invalid endpoint format");
}
// Create the connection
// NOTE: It is essential that the PipeOptions.Asynchronous option be
// specified, or the ReadAsync and WriteAsync methods will block
// (and I don't mean they'll call await and halt - I mean they'll
// never return a Task object)
var connection = new NamedPipeClientStream(
components[2],
components[4],
PipeDirection.InOut,
PipeOptions.Asynchronous
);
// Try to connect asynchronously
try
{
await connection.ConnectAsync();
}
catch (Exception e)
{
return Tuple.Create(-1, e.Message);
}
// Store the connection
Int32 connectionId = -1;
lock (this)
{
// Compute the next connection id. Watch for overflow, because
// we use -1 as the invalid identifier.
if (_nextConnectionId < 0)
{
connection.Close();
return Tuple.Create(-1, "connection ids exhausted");
}
connectionId = _nextConnectionId++;
// Do the storage
_connections[connectionId] = connection;
}
// All done
return Tuple.Create(connectionId, "");
}
private async Task<UserProfileResultMock> CreateProfileClientTestWorkerAsync(string input, CancellationToken ct = default(CancellationToken)) {
string jsonResp = null;
using (NamedPipeClientStream client = new NamedPipeClientStream("Microsoft.R.Host.UserProfile.Creator{b101cc2d-156e-472e-8d98-b9d999a93c7a}")) {
await client.ConnectAsync(ct);
byte[] data = Encoding.Unicode.GetBytes(input);
await client.WriteAsync(data, 0, data.Length, ct);
await client.FlushAsync(ct);
byte[] responseRaw = new byte[1024];
var bytesRead = await client.ReadAsync(responseRaw, 0, responseRaw.Length, ct);
jsonResp = Encoding.Unicode.GetString(responseRaw, 0, bytesRead);
}
return Json.DeserializeObject<UserProfileResultMock>(jsonResp);
}
#pragma warning disable 1998 // Because in the NET451 code path, there's nothing to await
public override async Task<Stream> Open(string address)
{
_namedPipeClientStream = new NamedPipeClientStream(
".",
address,
PipeDirection.InOut,
PipeOptions.Asynchronous);
#if NET451
_namedPipeClientStream.Connect();
#else
await _namedPipeClientStream.ConnectAsync().ConfigureAwait(false);
#endif
return _namedPipeClientStream;
}
private static int PingPong_OtherProcess(string inName, string outName)
{
// Create pipes with the supplied names
using (var inbound = new NamedPipeClientStream(".", inName, PipeDirection.In))
using (var outbound = new NamedPipeServerStream(outName, PipeDirection.Out))
{
// Wait for the connections to be established
Task.WaitAll(inbound.ConnectAsync(), outbound.WaitForConnectionAsync());
// Repeatedly read then write bytes from and to the other process
for (int i = 0; i < 10; i++)
{
int b = inbound.ReadByte();
outbound.WriteByte((byte)b);
}
}
return SuccessExitCode;
}
private async Task<RUserProfileServiceResponse> ProfileWorkerAsync(string name, string log, RUserProfileServiceRequest request, CancellationToken ct) {
using (NamedPipeClientStream client = new NamedPipeClientStream(name)) {
try {
await client.ConnectAsync(ct);
string jsonReq = JsonConvert.SerializeObject(request);
byte[] data = Encoding.Unicode.GetBytes(jsonReq.ToString());
await client.WriteAsync(data, 0, data.Length, ct);
await client.FlushAsync(ct);
byte[] responseRaw = new byte[1024];
var bytesRead = await client.ReadAsync(responseRaw, 0, responseRaw.Length, ct);
string jsonResp = Encoding.Unicode.GetString(responseRaw, 0, bytesRead);
return Json.DeserializeObject<RUserProfileServiceResponse>(jsonResp);
} catch (Exception ex) when (!ex.IsCriticalException()) {
_logger.LogError(log, request.Username);
return RUserProfileServiceResponse.Blank;
}
}
}
public void PingPong()
{
// Create names for two pipes
string outName = Guid.NewGuid().ToString("N");
string inName = Guid.NewGuid().ToString("N");
// Create the two named pipes, one for each direction, then create
// another process with which to communicate
using (var outbound = new NamedPipeServerStream(outName, PipeDirection.Out))
using (var inbound = new NamedPipeClientStream(".", inName, PipeDirection.In))
using (var remote = RemoteInvoke(PingPong_OtherProcess, outName, inName))
{
// Wait for both pipes to be connected
Task.WaitAll(outbound.WaitForConnectionAsync(), inbound.ConnectAsync());
// Repeatedly write then read a byte to and from the other process
for (byte i = 0; i < 10; i++)
{
outbound.WriteByte(i);
int received = inbound.ReadByte();
Assert.Equal(i, received);
}
}
}
public static async Task ClientCloneTests()
{
const string pipeName = "fooClientclone";
byte[] msg1 = new byte[] { 5, 7, 9, 10 };
byte[] received0 = new byte[] { };
byte[] received1 = new byte[] { 0, 0, 0, 0 };
using (NamedPipeServerStream server = new NamedPipeServerStream(pipeName, PipeDirection.In, 1, PipeTransmissionMode.Byte))
using (NamedPipeClientStream clientBase = new NamedPipeClientStream(".", pipeName, PipeDirection.Out, PipeOptions.None))
{
await Task.WhenAll(server.WaitForConnectionAsync(), clientBase.ConnectAsync());
using (NamedPipeClientStream client = new NamedPipeClientStream(PipeDirection.Out, false, true, clientBase.SafePipeHandle))
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
Assert.Equal(1, client.NumberOfServerInstances);
}
Assert.Equal(PipeTransmissionMode.Byte, client.TransmissionMode);
Task clientTask = Task.Run(() => client.Write(msg1, 0, msg1.Length));
int len1 = server.Read(received1, 0, msg1.Length);
await clientTask;
Assert.Equal(msg1.Length, len1);
Assert.Equal(msg1, received1);
// test special cases of buffer lengths = 0
int len0 = server.Read(received0, 0, 0);
Assert.Equal(0, len0);
Assert.Equal(0, await server.ReadAsync(received0, 0, 0));
}
}
}
public static async Task ClientServerOneWayOperations(
string pipeName, PipeDirection serverDirection,
bool asyncServerPipe, bool asyncClientPipe,
bool asyncServerOps, bool asyncClientOps)
{
PipeDirection clientDirection = serverDirection == PipeDirection.Out ? PipeDirection.In : PipeDirection.Out;
PipeOptions serverOptions = asyncServerPipe ? PipeOptions.Asynchronous : PipeOptions.None;
PipeOptions clientOptions = asyncClientPipe ? PipeOptions.Asynchronous : PipeOptions.None;
using (NamedPipeServerStream server = new NamedPipeServerStream(pipeName, serverDirection, 1, PipeTransmissionMode.Byte, serverOptions))
{
byte[] received = new byte[] { 0 };
Task clientTask = Task.Run(async () =>
{
using (NamedPipeClientStream client = new NamedPipeClientStream(".", pipeName, clientDirection, clientOptions))
{
if (asyncClientOps)
{
await client.ConnectAsync();
if (clientDirection == PipeDirection.In)
{
received = await ReadBytesAsync(client, sendBytes.Length);
}
else
{
await WriteBytesAsync(client, sendBytes);
}
}
else
{
client.Connect();
if (clientDirection == PipeDirection.In)
{
received = ReadBytes(client, sendBytes.Length);
}
else
{
WriteBytes(client, sendBytes);
}
}
}
});
if (asyncServerOps)
{
await server.WaitForConnectionAsync();
if (serverDirection == PipeDirection.Out)
{
await WriteBytesAsync(server, sendBytes);
}
else
{
received = await ReadBytesAsync(server, sendBytes.Length);
}
}
else {
server.WaitForConnection();
if (serverDirection == PipeDirection.Out)
{
WriteBytes(server, sendBytes);
}
else
{
received = ReadBytes(server, sendBytes.Length);
}
}
await clientTask;
Assert.Equal(sendBytes, received);
server.Disconnect();
Assert.False(server.IsConnected);
}
}
internal static async Task<BuildResponse> Send(string pipeName, BuildRequest request)
{
using (var client = new NamedPipeClientStream(pipeName))
{
await client.ConnectAsync();
await request.WriteAsync(client);
return await BuildResponse.ReadAsync(client);
}
}
