public static Socket InitGetConnection(Socket withClient, HTTPRequest initReq, byte[] buffer)
{
Socket withServer = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var ipAddrs = Dns.GetHostAddresses(initReq.reqHdr.httpHdrDict["Host"]);
try
{
withServer.Connect(new IPEndPoint(ipAddrs[ipAddrs.Length - 1], 80));
withServer.Send(initReq.GetRequestBytes());
}
catch (SocketException e)
{
try
{
withServer.Connect(new IPEndPoint(ipAddrs[ipAddrs.Length - 1], 80));
}
catch (SocketException ee)
{
withClient.Close();
return(null);
}
}
Array.Clear(buffer, 0, buffer.Length);
var cnt = withServer.Receive(buffer);
//Check & make sure get the whole head in the buffer
int nowAtIndex = 0;
bool flagCont = true;
while (true)
{
while (flagCont)
{
nowAtIndex = Array.IndexOf <byte>(buffer, 0x0a, nowAtIndex + 1);
if (nowAtIndex == -1)
{
break;
}
if (nowAtIndex + 2 < buffer.Length)
{
if (buffer[nowAtIndex + 1] != 0x0d)
{
continue;
}
} // End of Header found
flagCont = false;
}
if (!flagCont)
{
break;
}
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
if (withServer.Available != 0)
{
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
HTTPResponseHeader respHeader;
if (cnt != 0)
{
respHeader = new HTTPResponseHeader(buffer);
}
else
{
return(null);
}
int contentLength = 0;
switch (respHeader.statusCode)
{
case 304:
break;
case 200:
try
{
if (int.TryParse(respHeader.httpHdrDict["Content-Length"], out contentLength))
{
while (cnt < respHeader.hdrLength + contentLength)
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
}
catch (KeyNotFoundException e)
{
if (respHeader.httpHdrDict["Transfer-Encoding"] == "chunked")
{
int currChunkLength = 0;
int headerStartIndex = respHeader.hdrLength;
while (true)
{
// Fetching the head and length of the chunk.
try
{
nowAtIndex = Array.IndexOf <byte>(buffer, 0x0a, headerStartIndex); // Finding the end of the header.
Console.WriteLine(Thread.CurrentThread.Name + ", BufSize = " + buffer.Length +
", nowHdrStartIndex = " + headerStartIndex);
}
catch (Exception eee)
{
Console.WriteLine(Thread.CurrentThread.Name);
Console.WriteLine(eee);
Console.WriteLine(headerStartIndex + ", " + buffer.Length);
}
if (nowAtIndex != -1)
{
currChunkLength = int.Parse(Encoding.UTF8.GetString(buffer, headerStartIndex,
nowAtIndex - headerStartIndex - 1), System.Globalization.NumberStyles.HexNumber);
if (currChunkLength == 0)
{
break;
} // The chunked data stream ends.
nowAtIndex++;
headerStartIndex = nowAtIndex;
// Now nowAtIndex at the beginning of the chunk.
while (cnt < nowAtIndex + currChunkLength) // The current chunk is not completely buffered
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
headerStartIndex += (currChunkLength + 2); // nowAtIndex now at the start of the next Header
}
else
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
}
}
break;
}
var response = new HTTPResponse(buffer, cnt);
withClient.Send(response.GetResponseBytes());
try
{
if (response.respHdr.httpHdrDict["Connection"] == "close")
{
withServer.Close(10);
withClient.Close(10);
return(null);
}
}
catch (KeyNotFoundException ke)
{
if (!(initReq.reqHdr.httpHdrDict["Proxy-Connection"] == "keep-alive"))
{
withServer.Close(10);
withClient.Close(10);
return(null);
}
}
//Array.Clear(buffer, 0, buffer.Length);
//var cnt = withServer.Receive(buffer);
////Check & make sure get the whole head in the buffer
//int nowAtIndex = 0;
//bool flagCont = true;
//while (true)
//{
// while (flagCont)
// {
// nowAtIndex = Array.IndexOf<byte>(buffer, 0x0a, nowAtIndex + 1);
// if (nowAtIndex == -1) { break; }
// if (nowAtIndex + 2 < buffer.Length) { if (buffer[nowAtIndex + 1] != 0x0d) { continue; } } // End of Header found
// flagCont = false;
// }
// if (!flagCont) { break; }
// if (cnt == buffer.Length) { Array.Resize(ref buffer, 2 * buffer.Length); }
// if (withServer.Available != 0) { cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0); }
//}
//HTTPResponseHeader respHeader;
//if (cnt != 0) { respHeader = new HTTPResponseHeader(buffer); } else { return null; }
//int contentLength = 0;
//switch (respHeader.statusCode)
//{
// case 304:
// break;
// case 200:
// try
// {
// if (int.TryParse(respHeader.httpHdrDict["Content-Length"], out contentLength))
// {
// while (cnt < respHeader.hdrLength + contentLength)
// {
// if (cnt == buffer.Length)
// {
// Array.Resize(ref buffer, 2 * buffer.Length);
// }
// cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
// }
// }
// }
// catch (KeyNotFoundException e)
// {
// if (respHeader.httpHdrDict["Transfer-Encoding"] == "chunked")
// {
// int currChunkLength = 0;
// int headerStartIndex = respHeader.hdrLength;
// while (true)
// {
// // Fetching the head and length of the chunk.
// nowAtIndex = Array.IndexOf<byte>(buffer, 0x0a, headerStartIndex); // Finding the end of the header.
// if (nowAtIndex != -1)
// {
// currChunkLength = int.Parse(Encoding.UTF8.GetString(buffer, headerStartIndex,
// nowAtIndex - headerStartIndex - 1), System.Globalization.NumberStyles.HexNumber);
// if (currChunkLength == 0) { break; } // The chunked data stream ends.
// nowAtIndex++;
// headerStartIndex = nowAtIndex;
// // Now nowAtIndex at the beginning of the chunk.
// }
// while (cnt < nowAtIndex + currChunkLength) // The current chunk is not completely buffered
// {
// if (cnt == buffer.Length) { Array.Resize(ref buffer, 2 * buffer.Length); }
// cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
// }
// headerStartIndex += (currChunkLength + 2); // nowAtIndex now at the start of the next Header
// }
// }
// }
// break;
//}
//var response = new HTTPResponse(buffer, cnt);
//withClient.Send(response.GetResponseBytes());
//try
//{
// if (response.respHdr.httpHdrDict["Connection"] == "close")
// {
// withServer.Close(10);
// withClient.Close(10);
// return null;
// }
//}
//catch (KeyNotFoundException ke)
//{
// if (!(initReq.reqHdr.httpHdrDict["Proxy-Connection"] == "keep-alive"))
// {
// withServer.Close(10);
// withClient.Close(10);
// return null;
// }
//}
return(withServer);
}
public static bool ProcGetRequest(Socket withClient, Socket withServer)
{
var buffer = new byte[bufferSize];
int cnt = 0;
try
{
cnt = withClient.Receive(buffer);
}
catch (SocketException e)
{
Console.WriteLine(e);
Console.WriteLine(e.SocketErrorCode);
throw;
}
if (cnt == 0)
{
Console.WriteLine("Stopping " + Thread.CurrentThread.Name);
return(false);
}
while (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
cnt = withClient.Receive(buffer, buffer.Length / 2, buffer.Length / 2, 0);
}
var req = new HTTPRequest(buffer, cnt);
try
{
withServer.Send(req.GetRequestBytes());
}
catch (ArgumentNullException e)
{
Console.WriteLine(e);
Console.WriteLine(Encoding.UTF8.GetString(buffer, 0, cnt));
}
Array.Clear(buffer, 0, buffer.Length);
cnt = withServer.Receive(buffer);
//Check & make sure get the whole head in the buffer
int nowAtIndex = 0;
bool flagCont = true;
while (true)
{
while (flagCont)
{
nowAtIndex = Array.IndexOf <byte>(buffer, 0x0a, nowAtIndex + 1);
if (nowAtIndex == -1)
{
break;
}
if (nowAtIndex + 2 < buffer.Length)
{
if (buffer[nowAtIndex + 1] != 0x0d)
{
continue;
}
} // End of Header found
flagCont = false;
}
if (!flagCont)
{
break;
}
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
if (withServer.Available != 0)
{
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
HTTPResponseHeader respHeader;
if (cnt != 0)
{
respHeader = new HTTPResponseHeader(buffer);
}
else
{
return(false);
}
int contentLength = 0;
switch (respHeader.statusCode)
{
case 304:
break;
case 200:
try
{
if (int.TryParse(respHeader.httpHdrDict["Content-Length"], out contentLength))
{
while (cnt < respHeader.hdrLength + contentLength)
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
}
catch (KeyNotFoundException e)
{
if (respHeader.httpHdrDict["Transfer-Encoding"] == "chunked")
{
int currChunkLength = 0;
int headerStartIndex = respHeader.hdrLength;
while (true)
{
// Fetching the head and length of the chunk.
try
{
nowAtIndex = Array.IndexOf <byte>(buffer, 0x0a, headerStartIndex); // Finding the end of the header.
Console.WriteLine(Thread.CurrentThread.Name + ", BufSize = " + buffer.Length +
", nowHdrStartIndex = " + headerStartIndex);
}
catch (Exception eee)
{
Console.WriteLine(Thread.CurrentThread.Name);
Console.WriteLine(eee);
Console.WriteLine(headerStartIndex + ", " + buffer.Length);
}
if (nowAtIndex != -1)
{
currChunkLength = int.Parse(Encoding.UTF8.GetString(buffer, headerStartIndex,
nowAtIndex - headerStartIndex - 1), System.Globalization.NumberStyles.HexNumber);
if (currChunkLength == 0)
{
break;
} // The chunked data stream ends.
nowAtIndex++;
headerStartIndex = nowAtIndex;
// Now nowAtIndex at the beginning of the chunk.
while (cnt < nowAtIndex + currChunkLength) // The current chunk is not completely buffered
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
headerStartIndex += (currChunkLength + 2); // nowAtIndex now at the start of the next Header
}
else
{
if (cnt == buffer.Length)
{
Array.Resize(ref buffer, 2 * buffer.Length);
}
cnt += withServer.Receive(buffer, cnt, buffer.Length - cnt, 0);
}
}
}
}
break;
}
var response = new HTTPResponse(buffer, cnt);
withClient.Send(response.GetResponseBytes());
try
{
if (response.respHdr.httpHdrDict["Connection"] == "close")
{
withServer.Close(10);
withClient.Close(10);
return(false);
}
}
catch (KeyNotFoundException ke)
{
if (!(req.reqHdr.httpHdrDict["Proxy-Connection"] == "keep-alive"))
{
withServer.Close(10);
withClient.Close(10);
return(false);
}
}
return(true);
}