C# server that supports IPv6 and IPv4 on the same port
Question
Is it possible to have a Socket that listens and accepts both IPv6 and IPv4 clients? I used a IPv6 socket in C# hoping that it would automatically be backwards compatible but IPv4 clients cause an invalid ip address exception.
Solution
Have a look here. You can accept IPv4 clients as well as IPv6 clients with the one server socket.
OTHER TIPS
Set the socket's IPv6Only
option to false
:
Socket MySocket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);
MySocket.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.IPv6Only, false);
(taken from Matthew Iselin's second link)
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