public ListenClass()
{
_sender = new SenderClass();
}
public void StartListen()
{
SenderClass _sender = new SenderClass();
int iStartPos = 0;
String sRequest;
String sRequestedFile;
String sErrorMessage;
String sLocalDir;
String sMyWebServerRoot = "E:\\Lab02\\";
String sPhysicalFilePath = "";
String sFormattedMessage = "";
String sResponse = "";
while (true)
{
//Accept a new connection
Socket mySocket = myListener.AcceptSocket();
String sMimeType = @"text/html";
if (mySocket.Connected)
{
Console.WriteLine("\nClient Connected!!\n==================\nCLient IP {0}\n",
mySocket.RemoteEndPoint);
Byte[] bReceive = new Byte[1024];
int i = mySocket.Receive(bReceive, bReceive.Length, 0);
string sBuffer = Encoding.ASCII.GetString(bReceive);
if (sBuffer.Substring(0, 3) != "GET")
{
Console.WriteLine("Only Get Method is supported..");
}
else
{
iStartPos = sBuffer.IndexOf("HTTP", 1);
string sHttpVersion = sBuffer.Substring(iStartPos, 8);
sRequest = sBuffer.Substring(0, iStartPos - 1);
iStartPos = sRequest.LastIndexOf("/") + 1;
sRequestedFile = sRequest.Substring(iStartPos);
sLocalDir = sMyWebServerRoot;
if (sLocalDir.Length == 0)
{
sErrorMessage = "<H2>Error!! Requested Directory does not exists</H2><Br>";
_sender.SendHeader(sHttpVersion, "", sErrorMessage.Length, " 404 Not Found", ref mySocket);
_sender.SendToBrowser(sErrorMessage, ref mySocket);
mySocket.Close();
continue;
}
if (sRequestedFile.Length == 0)
{
sRequestedFile = "index.html";
}
sPhysicalFilePath = sLocalDir + sRequestedFile;
if (File.Exists(sPhysicalFilePath) == false)
{
sErrorMessage = "<H2>404 Error! File Does Not Exists...</H2>";
_sender.SendHeader(sHttpVersion, "", sErrorMessage.Length, " 404 Not Found", ref mySocket);
_sender.SendToBrowser(sErrorMessage, ref mySocket);
Console.WriteLine(sFormattedMessage);
}
else
{
int iTotBytes = 0;
sResponse = "";
FileStream fs = new FileStream(sPhysicalFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
BinaryReader reader = new BinaryReader(fs);
byte[] bytes = new byte[fs.Length];
int read;
while ((read = reader.Read(bytes, 0, bytes.Length)) != 0)
{
sResponse = sResponse + Encoding.ASCII.GetString(bytes, 0, read);
iTotBytes = iTotBytes + read;
}
reader.Close();
fs.Close();
_sender.SendHeader(sHttpVersion, sMimeType, iTotBytes, " 200 OK", ref mySocket);
_sender.SendToBrowser(bytes, ref mySocket);
}
}
mySocket.Close();
}
}
}
