public static void ServerStart(ConfigurationFile ConfigFile)
{
Console.WriteLine($"\n{DateTime.Now}: SERVER START");
Console.WriteLine("Configurations:");
Console.WriteLine($"\tport: {ConfigFile.Port}");
Console.WriteLine($"\tdefault page: {ConfigFile.DefaultPage}");
Console.WriteLine($"\troot directory: {ConfigFile.RootPath}\n");
}
public Client(TcpClient TcpClient, ConfigurationFile Config)
{
string Request = string.Empty; // declare string which will contain client's request
byte[] Buffer = new byte[1024]; // client data buffer
int Count; // count income bytes
// read data while its coming
while ((Count = TcpClient.GetStream().Read(Buffer, 0, Buffer.Length)) > 0)
{
// encode to string and put in our request string
Request += Encoding.ASCII.GetString(Buffer, 0, Count);
// request must end with \r\n\r\n
// or stop reading if its > 4kbyte
if (Request.IndexOf("\r\n\r\n") >= 0 || Request.Length > 4096)
{
break;
}
}
// parse query
Match ReqMatch = Regex.Match(Request, @"^\w+\s+([^\s\?]+)[^\s]*\s+HTTP/.*|");
// if query is wrong
if (ReqMatch == Match.Empty)
{
SendError(TcpClient, 400); // error 400
return;
}
// query to string
string RequestUri = ReqMatch.Groups[1].Value;
// transforming escaped characters.
//example : "%20" -> " "
RequestUri = Uri.UnescapeDataString(RequestUri);
// if ".." http://example.com/../../file.txt
if (RequestUri.IndexOf("..") >= 0)
{
SendError(TcpClient, 400);
return;
}
// if query end with "/" -> add "index.html"
if (RequestUri.EndsWith("/"))
{
RequestUri += Config.DefaultPage;
}
//root from config file + request
string FilePath = Config.RootPath + RequestUri;
// file not found -> 404 error
if (!File.Exists(FilePath))
{
SendError(TcpClient, 404);
return;
}
// get file extension
string Extension = RequestUri.Substring(RequestUri.LastIndexOf('.'));
string ContentType = GetTheType(Extension);
// check the file
FileStream FS;
try
{
FS = new FileStream(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch (Exception)
{
// if exeption - 500 error
SendError(TcpClient, 500);
return;
}
// send response
string Headers = "HTTP/1.1 200 OK\nContent-Type: " + ContentType + "\nContent-Length: " + FS.Length + "\n\n";
byte[] HeadersBuffer = Encoding.ASCII.GetBytes(Headers);
TcpClient.GetStream().Write(HeadersBuffer, 0, HeadersBuffer.Length);
while (FS.Position < FS.Length)
{
// read and send to client
try
{
Thread.Sleep(100); //NO to dDos ;)
Count = FS.Read(Buffer, 0, Buffer.Length);
TcpClient.GetStream().Write(Buffer, 0, Count);
}
catch
{
UI.Error(0);
break;
}
}
// close file and connection
FS.Close();
TcpClient.Close();
}
