async protected Task StartAsync(string Command, params string[] Arguments)
{
await Task.Run(() =>
{
var StartInfo = new ProcessStartInfo(Command, String.Join(" ", Arguments)); ;
StartInfo.CreateNoWindow = true;
StartInfo.UseShellExecute = false;
StartInfo.RedirectStandardError = true;
StartInfo.RedirectStandardInput = true;
StartInfo.RedirectStandardOutput = true;
this.SystemProcess = SystemProcess.Start(StartInfo);
this.SystemProcess.EnableRaisingEvents = true;
this.Out = new NodeBufferedStream(this.SystemProcess.StandardOutput.BaseStream);
this.Error = new NodeBufferedStream(this.SystemProcess.StandardError.BaseStream);
this.SystemProcess.Exited += SystemProcess_Exited;
});
}
async public Task TestReadLineAsync()
{
var MemoryStream = new MemoryStream();
var StreamWriter = new StreamWriter(MemoryStream) { AutoFlush = true };
StreamWriter.Write("a\r\n");
StreamWriter.Write("\r\n");
StreamWriter.Write("bb\r\n");
StreamWriter.Write("ccc\r\n");
StreamWriter.Write("dddd\r\n");
MemoryStream.Position = 0;
var Stream = new NodeBufferedStream(MemoryStream, 3);
Assert.AreEqual("a", await Stream.ReadLineAsync(Encoding.UTF8));
Assert.AreEqual("", await Stream.ReadLineAsync(Encoding.UTF8));
Assert.AreEqual("bb", await Stream.ReadLineAsync(Encoding.UTF8));
Assert.AreEqual("ccc", await Stream.ReadLineAsync(Encoding.UTF8));
Assert.AreEqual("dddd", await Stream.ReadLineAsync(Encoding.UTF8));
}
async public Task ReadLineAsyncLatencyIssuesTest()
{
ThreadPool.SetMaxThreads(1, 1);
var MemoryStream = new ProducerConsumerStream(new ProducerConsumer<byte>());
var StreamWriter = new StreamWriter(MemoryStream) { AutoFlush = true };
StreamWriter.Write("line1\r");
var Task2 = Task.Run(async () =>
{
await Task.Delay(2);
StreamWriter.Write("\n");
StreamWriter.Write("line2\r\n");
});
var Stream = new NodeBufferedStream(MemoryStream, 3);
Assert.AreEqual("line1", await Stream.ReadLineAsync(Encoding.UTF8));
Assert.AreEqual("line2", await Stream.ReadLineAsync(Encoding.UTF8));
await Task2;
}
static async public Task<WebSocketPacket> ReadPacketFromStreamAsync(int Version, NodeBufferedStream Stream)
{
var Packet = default(WebSocketPacket);
if (Version <= 0)
{
var PayloadBegin = await Stream.ReadBytesAsync(1);
if (PayloadBegin[0] != 0x00) throw(new Exception("Invalid Packet"));
Packet.Opcode = OpcodeEnum.TextFrame;
Packet.Payload = await Stream.ReadBytesUntilByteAsync(0xFF);
}
else
{
var Header = new byte[2];
var Size = new byte[8];
var SizeSize = 0;
var Mask = new byte[4];
var Data = new MemoryStream();
var Temp = new byte[128];
WebSocketPacket.OpcodeEnum Opcode;
bool IsFinal;
bool IsMasked;
int PayloadLength;
do
{
await Stream.ReadAsync(Header, 0, 2);
IsFinal = (((Header[0] >> 7) & 0x1) != 0);
Opcode = (WebSocketPacket.OpcodeEnum)((Header[0] >> 0) & 0x7);
PayloadLength = (Header[1] >> 0) & 0x7F;
IsMasked = ((Header[1] >> 7) & 0x1) != 0;
if (Opcode != OpcodeEnum.ContinuationFrame)
{
Packet.Opcode = Opcode;
}
// EXTENDED PayloadLength
if (PayloadLength >= 0x7E)
{
if (PayloadLength == 0x7E)
{
SizeSize = 2;
}
else if (PayloadLength == 0x7F)
{
SizeSize = 8;
}
await Stream.ReadAsync(Size, 0, SizeSize);
PayloadLength = 0;
for (int n = 0; n < SizeSize; n++)
{
PayloadLength <<= 8;
PayloadLength |= Size[n];
}
}
// MASK
if (IsMasked)
{
await Stream.ReadAsync(Mask, 0, 4);
}
// Read Payload
await Stream.ReadAsync(Temp, 0, PayloadLength);
// Perform unmasking
if (IsMasked)
{
for (int n = 0; n < PayloadLength; n++) Temp[n] ^= Mask[n % 4];
}
Data.Write(Temp, 0, PayloadLength);
} while (!IsFinal);
Packet.Payload = Data.ToArray();
}
return Packet;
}
