public bool Send(string host, int listenerPortOfServer, string[] commands, AddressFamily addressFamily, SocketType socketType, ProtocolType protocolType, int timeoutInMilliseconds)
{
var result = false;
Socket socket = null;
TcpListener dataSocket = null;
try
{
var ipAddress = GetIpAddress();
if (ipAddress == null)
{
return(false);
}
dataSocket = new TcpListener(IPAddress.Parse(ipAddress), 0);
dataSocket.Start();
var ip = ((IPEndPoint)dataSocket.LocalEndpoint).Address;
socket = new Socket(addressFamily, socketType, protocolType)
{
SendBufferSize = MaxBufferSize,
SendTimeout = timeoutInMilliseconds,
ReceiveTimeout = timeoutInMilliseconds
//ReceiveBufferSize = MaxBufferSize
};
var res = socket.BeginConnect(host, listenerPortOfServer, null, null);
var success = res.AsyncWaitHandle.WaitOne(timeoutInMilliseconds, true);
if (success)
{
for (var i = 0; i < commands.Length; i++)
{
if (commands[i] == "PORT ")
{
var ipStr = ipUtils.A1A2A3A4P1P2(ip.ToString(), ((IPEndPoint)dataSocket.LocalEndpoint).Port);
commands[i] += String.Concat(ipStr, "\r\n");
}
var sendBuffer = Encoding.ASCII.GetBytes(commands[i]);
socket.Send(sendBuffer, sendBuffer.Length, SocketFlags.None);
if (commands[i].IndexOf("RETR ", StringComparison.Ordinal) != 0)
{
WaitForSocketData(socket, 1000);
}
do
{
var receiveBuffer = new byte[socket.Available];
var readedBytes = socket.Receive(receiveBuffer, receiveBuffer.Length, SocketFlags.None);
if (readedBytes > 0)
{
var s = new String(Encoding.ASCII.GetChars(receiveBuffer, 0, readedBytes));
if (s.IndexOf("150 ") == 0 || s.IndexOf("125 ") == 0)
{
while (!dataSocket.Pending())
{
Thread.Sleep(1);
}
var ds = dataSocket.AcceptSocket();
WaitForSocketData(ds, Int32.MaxValue);
while (true)
{
if (!WaitForSocketData(ds, 10000))
{
break;
}
var dataReceiveBuffer = new byte[ds.Available];
/*var readBytes =*/ ds.Receive(dataReceiveBuffer, dataReceiveBuffer.Length, SocketFlags.None);
if (commands[i].IndexOf("RETR ") == 0)
{
var fullPath = path + commands[i].Replace("RETR ", String.Empty).Replace("\r\n", String.Empty);
using (var fileStream = File.Open(fullPath, FileMode.Append))
{
using (var binaryWriter = new BinaryWriter(fileStream))
{
binaryWriter.Write(dataReceiveBuffer);
binaryWriter.Flush();
binaryWriter.Close();
}
fileStream.Close();
}
}
}
}
}
WaitForSocketData(socket, 100);
}while (socket.Available > 0);
result = true;
}
}
}
catch { }
finally
{
try
{
dataSocket?.Stop();
if (socket != null)
{
socket.Shutdown(SocketShutdown.Both);
socket.Close();
}
}
catch { }
}
return(result);
}