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));
}
private SocketError OnBind(IntPtr socket, IntPtr address, int addressSize)
{
var socketAddress = GetSocketAddress(address);
DebugMessage(
nameof(OnBind),
"Binding to `{0}:{1}` ...",
socketAddress?.Address?.IPAddress,
socketAddress?.Port
);
var networkInterface = GetNetworkInterface();
var interfaceAddress = GetInterfaceAddress(networkInterface, socketAddress?.AddressFamily, true);
if (socketAddress?.Address == null || networkInterface == null || interfaceAddress == null)
{
DebugMessage(
nameof(OnBind),
"Binding to `{0}:{1}` rejected due to lack of a valid interface address.",
socketAddress?.Address?.IPAddress,
socketAddress?.Port
);
return(SocketError.SocketError);
}
SocketError bindResult;
if (interfaceAddress.AddressFamily == AddressFamily.InterNetwork &&
!interfaceAddress.Equals(socketAddress.Address.IPAddress))
{
var bindIn = new SocketAddressIn
{
Address = new AddressIn {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = socketAddress.Port
};
DebugMessage(
nameof(OnBind),
"Binding to `{0}:{1}` replaced by a binding request to `{2}:{3}`.",
socketAddress.Address.IPAddress,
socketAddress.Port,
bindIn.Address.IPAddress,
bindIn.Port
);
socketAddress = bindIn;
bindResult = Socket.Bind(socket, ref bindIn, Marshal.SizeOf(bindIn));
}
else if (interfaceAddress.AddressFamily == AddressFamily.InterNetworkV6 &&
!interfaceAddress.Equals(socketAddress.Address.IPAddress))
{
var scopeId = (uint?)networkInterface.GetIPProperties()?.GetIPv6Properties()?.Index ?? 0;
var flowInfo = (socketAddress as SocketAddressIn6?)?.FlowInfo ?? 0;
var bindIn6 = new SocketAddressIn6
{
Address = new AddressIn6 {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = socketAddress.Port, // Assign a random port
ScopeId = scopeId,
FlowInfo = flowInfo
};
DebugMessage(
nameof(OnBind),
"Binding to `{0}:{1}` replaced by a binding request to `{2}:{3}`.",
socketAddress.Address.IPAddress,
socketAddress.Port,
bindIn6.Address.IPAddress,
bindIn6.Port
);
socketAddress = bindIn6;
bindResult = Socket.Bind(socket, ref bindIn6, Marshal.SizeOf(bindIn6));
}
else
{
bindResult = Socket.Bind(socket, address, addressSize);
}
DebugMessage(
nameof(OnBind),
"Binding to `{0}:{1}` resulted in a `{2}` response. [WSALastError = `{3}`]",
socketAddress.Address.IPAddress,
socketAddress.Port,
bindResult,
Socket.WSAGetLastError()
);
return(bindResult);
}
private SocketError BindSocketByAddress(IntPtr socket, ISocketAddress socketAddress)
{
switch (socketAddress?.AddressFamily)
{
case AddressFamily.InterNetwork:
if (socketAddress.Address?.IPAddress?.Equals(IPAddress.Any) == true)
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [0.0.0.0]"
);
return(SocketError.Success);
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("127.0.0.0"),
IPAddress.Parse("127.255.255.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Loop Back]"
);
return(SocketError.Success); // LoopBack
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("10.0.0.0"),
IPAddress.Parse("10.255.255.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Private Range]"
);
return(SocketError.Success); // Private Network
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("172.16.0.0"),
IPAddress.Parse("172.31.255.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Private Range]"
);
return(SocketError.Success); // Private Network
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("192.168.0.0"),
IPAddress.Parse("192.168.255.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Private Range]"
);
return(SocketError.Success); // Private Network
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("169.254.1.0"),
IPAddress.Parse("169.254.254.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Link Local Network]"
);
return(SocketError.Success); // Link Local Network
}
if (IsIpInRange(socketAddress.Address?.IPAddress, IPAddress.Parse("224.0.0.0"),
IPAddress.Parse("239.255.255.255")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [MultiCast Address]"
);
return(SocketError.Success); // MultiCast
}
break;
case AddressFamily.InterNetworkV6:
if (socketAddress.Address?.IPAddress?.Equals(IPAddress.IPv6Any) == true)
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [0000:]"
);
return(SocketError.Success);
}
if (socketAddress.Address?.IPAddress?.Equals(IPAddress.IPv6Loopback) == true)
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [Loop Back]"
);
return(SocketError.Success); // LoopBack
}
if (IsIpInRange(socketAddress.Address?.IPAddress,
IPAddress.Parse("fc00:0000:0000:0000:0000:0000:0000:0000"),
IPAddress.Parse("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff")))
{
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due to the nature of passed IP Address. [fc00:]"
);
return(SocketError.Success); // Unique Local Addresses, Private networks, MultiCast
}
break;
default:
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due an unsupported address family of `{0}`.",
socketAddress?.AddressFamily
);
return(SocketError.Success);
}
var networkInterface = GetNetworkInterface();
var interfaceAddress = GetInterfaceAddress(networkInterface, socketAddress.AddressFamily, false);
if (networkInterface == null || interfaceAddress == null)
{
DebugMessage(
nameof(OnBind),
"Binding for the `{0}:{1}` rejected due to lack of a valid interface address.",
socketAddress.Address?.IPAddress,
socketAddress.Port
);
return(SocketError.SocketError);
}
if (interfaceAddress.AddressFamily == AddressFamily.InterNetwork)
{
var bindIn = new SocketAddressIn
{
Address = new AddressIn {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = 0 // Assign a random port
};
DebugMessage(
nameof(BindSocketByAddress),
"Binding to `{0}:{1}` ...",
bindIn.Address?.IPAddress,
bindIn.Port
);
return(Socket.Bind(socket, ref bindIn, Marshal.SizeOf(bindIn)));
}
if (interfaceAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
var scopeId = (uint?)networkInterface.GetIPProperties()?.GetIPv6Properties()?.Index ?? 0;
var flowInfo = (socketAddress as SocketAddressIn6?)?.FlowInfo ?? 0;
var bindIn6 = new SocketAddressIn6
{
Address = new AddressIn6 {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = 0, // Assign a random port
ScopeId = scopeId,
FlowInfo = flowInfo
};
DebugMessage(
nameof(BindSocketByAddress),
"Binding to `{0}:{1}` ...",
bindIn6.Address?.IPAddress,
bindIn6.Port
);
return(Socket.Bind(socket, ref bindIn6, Marshal.SizeOf(bindIn6)));
}
DebugMessage(
nameof(BindSocketByAddress),
"Binding to interface skipped due an unsupported interface address family of `{0}`.",
interfaceAddress.AddressFamily
);
return(SocketError.Success);
}
private SocketError BindSocketByAddress(IntPtr socket, ISocketAddress socketAddress)
{
if (IsSpecialAddress(socket, socketAddress))
{
return(SocketError.Success);
}
if (IsSocketMarkedAsBinded(socket))
{
DebugMessage(
nameof(BindSocketByAddress),
socket,
"Binding to interface skipped as the socket should be already binded."
);
return(SocketError.Success);
}
var networkInterface = GetNetworkInterface();
var interfaceAddress = GetInterfaceAddress(networkInterface, socketAddress.AddressFamily, false);
if (networkInterface == null || interfaceAddress == null)
{
DebugMessage(
nameof(BindSocketByAddress),
socket,
"Binding for the `{0}:{1}` rejected due to lack of a valid interface address.",
socketAddress.Address?.IPAddress,
socketAddress.Port
);
return(SocketError.SocketError);
}
if (interfaceAddress.AddressFamily == AddressFamily.InterNetwork)
{
var bindIn = new SocketAddressIn
{
Address = new AddressIn {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = 0 // Assign a random port
};
DebugMessage(
nameof(BindSocketByAddress),
socket,
"Binding to `{0}:{1}` ...",
bindIn.Address?.IPAddress,
bindIn.Port
);
MarkSocketAsBinded(socket);
return(NativeSocket.Bind(socket, ref bindIn, Marshal.SizeOf(bindIn)));
}
if (interfaceAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
var scopeId = (uint?)networkInterface.GetIPProperties()?.GetIPv6Properties()?.Index ?? 0;
var flowInfo = (socketAddress as SocketAddressIn6?)?.FlowInfo ?? 0;
var bindIn6 = new SocketAddressIn6
{
Address = new AddressIn6 {
IPAddress = interfaceAddress
},
AddressFamily = interfaceAddress.AddressFamily,
Port = 0, // Assign a random port
ScopeId = scopeId,
FlowInfo = flowInfo
};
DebugMessage(
nameof(BindSocketByAddress),
socket,
"Binding to `{0}:{1}` ...",
bindIn6.Address?.IPAddress,
bindIn6.Port
);
MarkSocketAsBinded(socket);
return(NativeSocket.Bind(socket, ref bindIn6, Marshal.SizeOf(bindIn6)));
}
DebugMessage(
nameof(BindSocketByAddress),
socket,
"Binding to interface skipped due an unsupported interface address family of `{0}`.",
interfaceAddress.AddressFamily
);
return(SocketError.Success);
}
public static extern ConnectStatus WS2_Connect(IntPtr socket, ref SocketAddressIn address, int addressSize);