public static bool Start(int port, string responseTemplate)
{
Message message = new Message();
bool success = true;
//make a 1mb buffer
byte[] buffer = new byte[1024];
//translated to string form from data recieved from client socket.
StringBuilder sb = new StringBuilder();
//the HOST field in the Request line of the HTTP request
string requestedURL;
try {
//listens for connection on specified port parameter on all
//network interfaces. I.e wired and wireless assigned IP addresses
TcpListener tcpListener = new TcpListener(IPAddress.Any, port);
//start listening
tcpListener.Start();
/********NOTE: These using statements call Dispose() at the end of the block implicitly ******/
using (TcpClient tcpClient = tcpListener.AcceptTcpClient())
using (NetworkStream stream = tcpClient.GetStream()) {
//read the networkstream's data into buffer
//loop to recieve all data sent by the client.
int bytesRead = 0;
string dataRead = "";
string content = "";
do
{
bytesRead = stream.Read(buffer, 0, buffer.Length);
dataRead = System.Text.Encoding.ASCII.GetString(buffer, 0, bytesRead);
content = message.CheckValidity(dataRead);
while (content != "")
{
content = message.CheckValidity(content);
if (message.State is ErrorState)
{
return(false);
}
}
sb.Append(dataRead);
} while(stream.DataAvailable);
//check if we reached finalstate, if no return false.
if (!(message.State is FinalState))
{
return(false);
}
//at this point we will have the full data.
requestedURL = WebServer.ParseHttpRequest(sb.ToString());
//NOTE: We are safe to do this parse and check because we've reach an accepting state.
if (requestedURL == "")
{
//No Host: was specified.
success = false;
}
else
{
string formattedResponse = string.Format(responseTemplate, "11346814", DateTime.Now, requestedURL);
byte[] msg = System.Text.Encoding.ASCII.GetBytes(formattedResponse);
stream.Write(msg, 0, msg.Length);
}
//close the tcp connection with the client since we are done.
tcpClient.Close();
}
} catch (SocketException) {
success = false;
}
return(success);
}