private void SendError(TcpClient Client, int Code)
{
ClientResponseProcessor CRP = new ClientResponseProcessor();
CRP.generateError(Code);
closeClientWithBuffer(Client, CRP.toBuffer());
}
public Client(TcpClient Client)
{
string Request = "";
byte[] Buffer = new byte[1024];
int Count;
while ((Count = Client.GetStream().Read(Buffer, 0, Buffer.Length)) > 0)
{
Request += Encoding.ASCII.GetString(Buffer, 0, Count);
// запит має закінчуватись на \r\n\r\n
if (Request.IndexOf("\r\n\r\n") >= 0 || Request.Length > 4096)
{
break;
}
}
// шукаємо в стрічці запит користувача
Match ReqMatch = Regex.Match(Request, @"^\w+\s+([^\s\?]+)[^\s]*\s+HTTP/.*|");
if (ReqMatch == Match.Empty)
{
SendError(Client, 400);
return;
}
string RequestUri = ReqMatch.Groups[1].Value;
RequestUri = Uri.UnescapeDataString(RequestUri);
// захист від хакерських атак
if (RequestUri.IndexOf("..") >= 0)
{
SendError(Client, 400);
return;
}
string filename = Directory.GetCurrentDirectory() + "\\" + "data.csv";
if (RequestUri.EndsWith("/") || RequestUri == "")
{
ClientResponseProcessor CRP = new ClientResponseProcessor();
try
{
string data = "";
if (File.Exists(filename))
{
data += "<!DOCTYPE html>";
data += "<html>";
DataBaseReader DBReader = new DataBaseReader(filename);
List <long> dataFromDB = DBReader.GetDataFromDB();
int i = 0;
data += dataFromDB.Select(x =>
{
string Div = (((++i) > 3) ? "<div>" : "<div><b>");
string DivClose = ((i > 3) ? "</div>" : "</b></div>");
string H = ((i < 4) ? "<h" + i + ">" : "");
string HClose = ((i < 4) ? "<h" + i + ">" : "");
string BestScore = ((i == 1) ? "👍" : "");
return(Div + H + x + BestScore + HClose + DivClose);
}).Aggregate("", (prev, curr) => prev + curr);
data += "</html>";
}
CRP.add(data);
byte[] ResponseBuffer = CRP.toBuffer();
string Headers = "HTTP/1.1 200 OK\nContent-Type: " + "text/html" + "\nContent-Length: " + ResponseBuffer.Length + "\n\n";
byte[] HeadersBuffer = Encoding.ASCII.GetBytes(Headers);
Client.GetStream().Write(HeadersBuffer, 0, HeadersBuffer.Length);
closeClientWithBuffer(Client, ResponseBuffer);
Console.WriteLine("sent");
}
catch (Exception e) { Console.WriteLine("error " + e.ToString()); }
Client.Close();
}
else
{
try
{
string newValue = RequestUri.Replace("/", "");
if (newValue == "favicon.ico")
{
return;
}
long newIntValue = Int32.Parse(newValue);
if (newIntValue != prev)
{
prev = newIntValue;
File.AppendAllText((filename), newIntValue + ",");
Console.WriteLine("added new " + RequestUri.Replace("/", ""));
}
}
catch (Exception e) { Console.WriteLine("error " + e.ToString()); }
Client.Close();
return;
}
}