private static void WriteResponse(HTTPResponse Response)
{
Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("Response:");
Console.WriteLine(Response.RawHTTPHeader + Environment.NewLine);
Console.ForegroundColor = ConsoleColor.Gray;
Console.WriteLine(Response.Content.ToUTF8String() + Environment.NewLine);
}
public Task<HTTPClient> Execute(HTTPRequestBuilder HTTPRequest, Action<HTTPResponse> HTTPResponseDelegate)
{
return Task<HTTPClient>.Factory.StartNew(() =>
{
#region Data
Boolean _EndOfHTTPHeader = false;
long _Length = 0;
long EndOfHeaderPosition = 6;
#endregion
#region Client initialisieren und mit dem Server verbinden
// Init TcpClient
if (TCPClient == null)
TCPClient = new TcpClient(this.RemoteIPAddress.ToString(), this.RemotePort.ToInt32());
//TCPClient.ReceiveTimeout = 5000;
// Open stream for reading and writting
if (TCPStream == null)
TCPStream = TCPClient.GetStream();
#endregion
#region Send Request
var _RequestBytes = (HTTPRequest.EntireRequestHeader + Environment.NewLine + Environment.NewLine).ToUTF8Bytes();
TCPStream.Write(_RequestBytes, 0, _RequestBytes.Length);
var _MemoryStream = new MemoryStream();
var _Buffer = new Byte[65535];
var sw = new Stopwatch();
#endregion
#region Wait for the server to react!
sw.Start();
while (!TCPStream.DataAvailable || sw.ElapsedMilliseconds > 20000)
Thread.Sleep(1);
if (!TCPStream.DataAvailable && sw.ElapsedMilliseconds > 20000)
{
TCPClient.Close();
throw new ApplicationException("Could not read from the TCP stream!");
}
sw.Stop();
#endregion
#region Read
TCPStream.ReadTimeout = 2;
while (!_EndOfHTTPHeader || TCPStream.DataAvailable || !TCPClient.Connected)
{
#region Read the entire stream into the memory <= Rethink this someday!
while (TCPStream.DataAvailable)
_MemoryStream.Write(_Buffer, 0, TCPStream.Read(_Buffer, 0, _Buffer.Length));
#endregion
#region Walk through the stream and search for two consecutive newlines indicating the end of the HTTP header
_Length = _MemoryStream.Length;
if (_Length > 4)
{
_MemoryStream.Seek(0, SeekOrigin.Begin);
int state = 0;
int _int = 0;
_EndOfHTTPHeader = false;
while (!_EndOfHTTPHeader || _int == -1)
{
_int = _MemoryStream.ReadByte();
switch (state)
{
case 0 : if (_int == 0x0d) state = 1; else state = 0; break;
case 1 : if (_int == 0x0a) state = 2; else state = 0; break;
case 2 : if (_int == 0x0d) state = 3; else state = 0; break;
case 3 : if (_int == 0x0a) _EndOfHTTPHeader = true; else state = 0; break;
default : state = 0; break;
}
}
if (_EndOfHTTPHeader)
break;
}
#endregion
}
if (_EndOfHTTPHeader == false)
throw new ApplicationException("Could not find the end of the HTTP protocol header!");
EndOfHeaderPosition = _MemoryStream.Position - 3;
#endregion
#region Copy HTTP header data
var HeaderBytes = new Byte[EndOfHeaderPosition - 1];
_MemoryStream.Seek(0, SeekOrigin.Begin);
_MemoryStream.Read(HeaderBytes, 0, HeaderBytes.Length);
#endregion
var _HTTPResponse = new HTTPResponse(HeaderBytes.ToUTF8String());
#region Read 'Content-Length' bytes...
// Copy only the number of bytes given within
// the HTTP header element 'Content-Length'!
if (_HTTPResponse.ContentLength.HasValue)
{
_MemoryStream.Seek(4, SeekOrigin.Current);
var _Read = _MemoryStream.Read(_Buffer, 0, _Buffer.Length);
var _StillToRead = (Int32) _HTTPResponse.ContentLength.Value - _Read;
_HTTPResponse.ContentStream.Write(_Buffer, 0, _Read);
var _CurrentBufferSize = 0;
var Retries = 0;
while (Retries < 10)
{
while (TCPStream.DataAvailable)
{
_CurrentBufferSize = Math.Min(_Buffer.Length, (Int32) _StillToRead);
_Read = TCPStream.Read(_Buffer, 0, _CurrentBufferSize);
_HTTPResponse.ContentStream.Write(_Buffer, 0, _Read);
_StillToRead -= _Read;
Retries = 0;
}
if (_StillToRead <= 0)
break;
Thread.Sleep(10);
Retries++;
}
_HTTPResponse.ContentStreamToArray();
}
#endregion
#region ...or read till timeout!
else
{
_MemoryStream.Seek(4, SeekOrigin.Current);
_HTTPResponse.ContentStream.Write(_Buffer, 0, _MemoryStream.Read(_Buffer, 0, _Buffer.Length));
var Retries = 0;
while (Retries < 10)
{
while (TCPStream.DataAvailable)
{
_HTTPResponse.ContentStream.Write(_Buffer, 0, TCPStream.Read(_Buffer, 0, _Buffer.Length));
Retries = 0;
}
Thread.Sleep(10);
Retries++;
}
_HTTPResponse.ContentStreamToArray();
}
#endregion
#region Close connection if requested!
if (_HTTPResponse.Connection == "close")
{
TCPClient.Close();
TCPClient = null;
TCPStream = null;
}
#endregion
#region Call HTTPResponse delegates
if (HTTPResponseDelegate != null)
HTTPResponseDelegate(_HTTPResponse);
#endregion
return this;
}, TaskCreationOptions.AttachedToParent);
}
