C# Reading Socket.

Socket clientSocket; //passed in from TcpListener

//read request from client socket
byte[] ByteArray = new Byte[this.clientSocket.Available];
int bytes = this.clientSocket.Receive(ByteArray);

//package it nicely in a HTTPRequest class that I made
HTTPRequest hr = new HTTPRequest(ByteArray);

//Get the remote host (server) and connect
IPHostEntry IPHost = Dns.Resolve(hr.getHost());
IPAddress[] address = IPHost.AddressList;
IPEndPoint sEndpoint = new IPEndPoint(address[0], hr.getPort());
Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp);
serverSocket.Connect(sEndpoint);

//send the request
serverSocket.Send(hr.toBytes());

//get the response
/*How do I know when all of the bytes from the server are here?
If I use serverSocket.Available most of the time I don't have any
 bytes available yet.  I want to read (or block even) until the full
 response is available or the remote endpoint is closed.  I can
 arbitrarily sleep the Thread, but that's a bad hack.  I can parse
 bytes on the fly and look for a Content-Length header, but I'd
 rather not because of complexity of the different encodings etc..
  I'd like to know how many bytes are possible to read so that I
 can construct the byte[] to read into accordingly like below, or be
 able to block until the remote side is done sending.*/

while(?remote_not_done_sending?)
{
     Thread.Sleep(some_short_time);
}
byte [] response_buffer = new byte[serverSocket.Available];