static void Main(string[] args)
{
CommandLineArguments cla = CommandLineArguments.Parse(args);
if (cla == null || (!cla.Sender && !cla.Receiver))
{
CommandLineArguments.ShowUsage();
Environment.Exit(1);
return;
}
else if (cla.Sender && String.IsNullOrEmpty(cla.File))
{
CommandLineArguments.ShowUsage();
Environment.Exit(1);
return;
}
if (cla.File != null && (!(File.Exists(cla.File))))
{
Console.Error.WriteLine($"File {cla.File} does not exist");
Environment.Exit(2);
return;
}
string remoteIp;
int remotePort;
Socket socket = new Socket(
AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
try
{
if (cla.LocalPort != -1)
{
Console.WriteLine("Using local port: {0}", cla.LocalPort);
}
else
{
cla.LocalPort = 0;
}
socket.Bind(new IPEndPoint(IPAddress.Any, cla.LocalPort));
P2pEndPoint p2pEndPoint = GetExternalEndPoint(socket);
if (p2pEndPoint == null)
{
return;
}
Console.WriteLine("Tell this to your peer: {0}", p2pEndPoint.External.ToString());
Console.WriteLine();
Console.WriteLine();
Console.Write("Enter the ip:port of your peer: ");
string peer = Console.ReadLine();
if (string.IsNullOrEmpty(peer))
{
Console.WriteLine("Invalid ip:port entered");
return;
}
// try again to connect to external to "reopen" port
GetExternalEndPoint(socket);
ParseRemoteAddr(peer, out remoteIp, out remotePort);
UdtSocket connection = PeerConnect(socket, remoteIp, remotePort);
if (connection == null)
{
Console.Error.WriteLine("Failed to establish P2P conn to {0}", remoteIp);
Environment.Exit(3);
return;
}
try
{
if (cla.Sender)
{
Sender.Run(connection, cla.File, cla.Verbose);
return;
}
Receiver.Run(connection);
}
finally
{
connection.Close();
}
}
finally
{
socket.Close();
}
}
static void Main(string[] args)
{
CommandLineArguments cla = CommandLineArguments.Parse(args);
if (cla == null || (!cla.Sender && !cla.Receiver))
{
CommandLineArguments.ShowUsage();
return;
}
string remoteIp;
int remotePort;
Socket socket = new Socket(
AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
try
{
if (cla.LocalPort != -1)
{
Console.WriteLine("Using local port: {0}", cla.LocalPort);
}
else
{
cla.LocalPort = 0;
}
socket.Bind(new IPEndPoint(IPAddress.Any, cla.LocalPort));
P2pEndPoint p2pEndPoint = GetExternalEndPoint(socket);
Console.WriteLine("p2pEndPoint external=" + p2pEndPoint.External);
Console.WriteLine("p2pEndPoint internal=" + p2pEndPoint.Internal);
if (p2pEndPoint == null)
{
return;
}
Console.WriteLine("Tell this to your peer: {0}", p2pEndPoint.External.ToString());
Console.WriteLine();
Console.WriteLine();
Console.Write("Enter the ip:port of your peer: ");
string peer = Console.ReadLine();
if (string.IsNullOrEmpty(peer))
{
Console.WriteLine("Invalid ip:port entered");
return;
}
// try again to connect to external to "reopen" port
GetExternalEndPoint(socket);
ParseRemoteAddr(peer, out remoteIp, out remotePort);
PseudoTcpSocket connection = PeerConnect(
p2pEndPoint.External.Address.ToString(), p2pEndPoint.External.Port,
socket, remoteIp, remotePort, cla);
Console.WriteLine("Called PeerConnect");
if (connection == null)
{
Console.WriteLine("Failed to establish P2P conn to {0}", remoteIp);
return;
}
try
{
if (args[0] == "sender")
{
Sender.Run(connection, cla.File, cla.Verbose);
}
else
{
Receiver.Run(connection);
}
}
finally
{
connection.Close(false);
}
}
finally
{
socket.Close();
}
}
