public void Start()
{
IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 1024);
Socket listener = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
try
{
listener.Bind(localEndPoint);
listener.Listen(0);
byte[] bytes = null;
string req = "";
int index;
do
{
Console.WriteLine("Waiting for a request...");
Socket handler = listener.Accept();
Thread.Sleep(2000);
req = "";
do
{
bytes = new byte[1024];
int bytesRec = handler.Receive(bytes);
req += Encoding.UTF8.GetString(bytes, 0, bytesRec);
} while (handler.Available > 0);
Console.WriteLine($"Request : {req} from machine: {handler.RemoteEndPoint}");
try
{
index = Convert.ToInt32(req);
}
catch (Exception ex)
{
byte[] msgs = Encoding.UTF8.GetBytes(ex.Message);
handler.Send(msgs);
handler.Shutdown(SocketShutdown.Both);
handler.Close();
continue;
throw;
}
//Thread.Sleep(1500);
IQueryable <Street> res = _dal.GetStreets(index);
byte[] msg;
if (res.Count() > 0)
{
string str = "";
foreach (var item in res)
{
str += item.Name + " |";
}
msg = Encoding.UTF8.GetBytes(str);
}
else
{
msg = Encoding.UTF8.GetBytes("Streets not found");
}
handler.Send(msg);
handler.Shutdown(SocketShutdown.Both);
handler.Close();
} while (req != "RussiaBye");
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
Console.WriteLine("\nPress ENTER to continue...");
Console.Read();
}
void MyAcceptCallbakFunction(IAsyncResult ia)
{
//get a link to the listening socket
Socket socket = (Socket)ia.AsyncState;
//get a socket to exchange data with the client
Socket ns = socket.EndAccept(ia);
//output the connection information to the console
Console.WriteLine(ns.RemoteEndPoint.ToString());
//send the client the current time asynchronously,
//by the end of the sending operation, the
//MySendCallbackFunction method will be called.
string req = "";
byte[] bytes;
do
{
bytes = new byte[1024];
int bytesRec = ns.Receive(bytes);
req += Encoding.UTF8.GetString(bytes, 0, bytesRec);
} while (ns.Available > 0);
Console.WriteLine($"Request : {req} from machine: {ns.RemoteEndPoint}");
byte[] msg;
try
{
int index = Convert.ToInt32(req);
IQueryable <Street> res = _dal.GetStreets(35000);
if (res.Count() > 0)
{
string str = "";
foreach (var item in res)
{
str += item.Name + " |";
}
msg = Encoding.UTF8.GetBytes(str);
}
else
{
msg = Encoding.UTF8.GetBytes("Streets not found");
}
}
catch (Exception ex)
{
msg = Encoding.UTF8.GetBytes(ex.Message);
}
//Thread.Sleep(1500);
ns.BeginSend(msg, 0, msg.Length, SocketFlags.None, new AsyncCallback(MySendCallbackFunction), ns);
//resume asynchronous Accept
socket.BeginAccept(new AsyncCallback(MyAcceptCallbakFunction), socket);
}
