private SocketError Do_Connect(IntPtr socket, ref SocketAddressIn address, int addressSize)
{
var addressIn = address;
ContinueExecution(() => DebugMessage("Connect: " + addressIn.IPAddress.IpAddress));
if (!BindSocket(socket, address.Family, address.IPAddress.IpAddress))
{
DebugMessage(Socket.WSAGetLastError().ToString());
return(SocketError.SocketError);
}
var returnValue = Socket.Connect(socket, ref address, addressSize);
//if (returnValue == SocketError.SocketError
// && (Socket.WSAGetLastError() == SocketError.WouldBlock
// || Socket.WSAGetLastError() == SocketError.Success))
//{
// // Non blocking mode
// returnValue = SocketError.Success;
//}
if (returnValue == SocketError.SocketError && Socket.WSAGetLastError() == SocketError.Success)
{
returnValue = SocketError.Success;
}
return(returnValue);
}
private bool BindSocket(IntPtr socket, AddressFamily addressFamily, IPAddress ipAddress, int portNumber = 0)
{
switch (addressFamily)
{
case AddressFamily.InterNetwork:
if (ipAddress.Equals(IPAddress.Any))
{
return(true);
}
if (IsIpInRange(ipAddress, IPAddress.Parse("127.0.0.0"), IPAddress.Parse("127.255.255.255")))
{
return(true); // Loopback
}
if (IsIpInRange(ipAddress, IPAddress.Parse("10.0.0.0"), IPAddress.Parse("10.255.255.255")))
{
return(true); // Private Network
}
if (IsIpInRange(ipAddress, IPAddress.Parse("172.16.0.0"), IPAddress.Parse("172.31.255.255")))
{
return(true); // Private Network
}
if (IsIpInRange(ipAddress, IPAddress.Parse("192.168.0.0"), IPAddress.Parse("192.168.255.255")))
{
return(true); // Private Network
}
if (IsIpInRange(ipAddress, IPAddress.Parse("224.0.0.0"), IPAddress.Parse("239.255.255.255")))
{
return(true); // Multicast
}
var networkIp = GetNetworkInterfaceIPAddress(addressFamily);
if (networkIp == null)
{
return(false);
}
if (networkIp.Equals(ipAddress))
{
return(true);
}
var bindIn = new SocketAddressIn
{
IPAddress = new SocketAddressIn.AddressIn {
IpAddress = networkIp
},
Family = networkIp.AddressFamily,
Port = portNumber
};
var addressIn = bindIn;
ContinueExecution(() => DebugMessage("Auto Bind: " + addressIn.IPAddress.IpAddress));
return(Socket.Bind(socket, ref bindIn, Marshal.SizeOf(bindIn)) == SocketError.Success);
default:
return(true);
}
}
private SocketError Do_Bind(IntPtr socket, ref SocketAddressIn address, int addressSize)
{
var addressIn = address;
ContinueExecution(
() => DebugMessage("Bind: " + addressIn.IPAddress.IpAddress + ":" + addressIn.Port));
var networkIp = GetNetworkInterfaceIPAddress(address.Family);
if (networkIp != null && !address.IPAddress.IpAddress.Equals(IPAddress.Any) &&
!address.IPAddress.IpAddress.Equals(networkIp) &&
!IsIpInRange(address.IPAddress.IpAddress, IPAddress.Parse("127.0.0.0"),
IPAddress.Parse("127.255.255.255")))
{
address.IPAddress.IpAddress = networkIp;
ContinueExecution(() => DebugMessage("Modified Bind: " + addressIn.IPAddress.IpAddress));
}
return(Socket.Bind(socket, ref address, addressSize));
}