/// <summary>
/// Callback to accept tcp connections
/// </summary>
/// <param name="result">Async Result/State</param>
private void OnAccept(IAsyncResult result)
{
if (!IsListening) return;
if (socket != null)
{
if (!socket.IsBound) return;
if (!result.IsCompleted) return;
try
{
if (socket != ((Socket)result.AsyncState)) return;
Socket accept_socket = (Socket)result.AsyncState;
if (accept_socket == null) return;
if (!accept_socket.IsBound) return;
Socket client_socket = socket.EndAccept(result);
if (!client_socket.Connected) return;
//Console.WriteLine("new client connected.");
Client client = new Client(client_socket);
client.RequestReceived += delegate(Client requester, Request request)
{
//TODO check if threading in this case is overkill
//System.Threading.Thread thread = new System.Threading.Thread(delegate()
//{
if (RequestReceived != null)
RequestReceived(this, request);
//});
//thread.Start();
};
clients.Add(client);
client.StartReceiving();
}
catch (Exception ex)
{
Console.WriteLine("Error accepting connection: " + ex.Message);
}
try
{
AsyncCallback event_accept = new AsyncCallback(OnAccept);
socket.BeginAccept(event_accept, socket);
}
catch (Exception ex)
{
Console.WriteLine("Fatal Error accepting connection: " + ex.Message);
}
}
else Console.WriteLine("Accept on tcp socket aborted.");
}
public Request(string header_string,string body_string,Client request_client)
{
if (request_client == null)
is_valid = false;
this.request_client = request_client;
//Console.WriteLine("Initiating Request from request string: "+request_string);
string[] seps = {"\r\n"};
string[] header_lines = header_string.Split(seps,StringSplitOptions.None);
if (header_lines.Length > 0)
{
string[] seps2 ={ " " };
string[] header_line_parts = header_lines[0].Split(seps2, StringSplitOptions.RemoveEmptyEntries);
if (header_line_parts.Length >= 3)
{
method = header_line_parts[0];
url = header_line_parts[1];
version = header_line_parts[2];
int i = 0;
foreach (string line in header_lines) //i know i should skip the first line , but this is so convenient
{//read header values into our headers list
if (line == "\r\n")
break;
if (i++ != 0)
{//skipping the first line which is not a header
int colon_pos = line.IndexOf(":");
if (colon_pos != -1)
{
headers.Add(line.Substring(0, colon_pos), line.Substring(colon_pos + 1).Trim());
}
else
{
Console.WriteLine("invalid header line without a colon");
is_valid = false;
}
}
}
//retrieve values from post body if type== x-www-form-url-encoded
//get query values from url if present ?
body = body_string;
//check if post and query values were given in body
string content_type = headers.Get("Content-Type");
if (content_type == "application/x-www-form-urlencoded")
{
//Console.WriteLine("body: " + body_string);
ParseValues(body_string, true);
}
//check if url contains query values
int query_start=url.IndexOf("?");
if (query_start != -1)
{
if (query_start + 1 < url.Length)
{
string query = url.Substring(query_start + 1);
ParseValues(query, false);
}
url = url.Substring(0, query_start);
}
//check headers for basic authentification
string auth_value = headers.Get("Authorization");
if (!string.IsNullOrEmpty(auth_value))
{
string[] seps3 = { " "};
string[] fields = auth_value.Split(seps3,StringSplitOptions.RemoveEmptyEntries);
if (fields.Length == 2)
{
byte[] decode = Convert.FromBase64String(fields[1]);
string creds = System.Text.Encoding.Default.GetString(decode);
//Console.WriteLine("creds: "+creds);
int colon_pos2 = creds.IndexOf(":");
if (colon_pos2 != -1)
{
auth_username = creds.Substring(0, colon_pos2);
auth_password = creds.Substring(colon_pos2 + 1);
}
}
}
}
else
{
Console.WriteLine("first request line had not enough fields");
is_valid = false;
}
}
else
{
Console.WriteLine("header is empty");
is_valid = false;
}
}
