CODEWITHSUNDEEP
ctcpipv6
Kundan Kumar
Kundan Kumar

Reputation: 2002

I am getting error in IPv6 socket connection

My server is creating a IPV6 socket.

On client I am creating a IPV4 socket. Now, In the connect API on client side I am passing the socket descriptor of IPV4 and IPV6 address structure.

INET_connect( sock,(SocketAddress *)in6_addr,(int)sizeof( sockaddr_in6 ) ) == 0 )

where

struct sockaddr_in6 in6_addr;

I am getting error in connection. Is it due to this or some other reason ? Please note that my server is IPV6(having an IPV6 address)

Upvotes: 0

Views: 833

Answers (2)

Andrey
Andrey

Reputation: 4356

On client I am creating a IPV4 socket

Why? Don't do that. If your client program creates an AF_INET socket (or is running on ip4-only OS) then there is nothing you can do on the client side to make such connection happen.

If you just have to do so - then it is the server that should be adapted to handle IPv4 clients.

Server might be able to accept a connection request from ip4 client - but it can only happen if server side disables IPV6_V6ONLY socket option and, obviously, if server's OS allows that. In this case ip6 server will see the ip4 client via ipv4-mapped ipv6 address.

Upvotes: 3

Edwin Buck
Edwin Buck

Reputation: 70909

You must use an IPV6 socket to connect to an IPV6 address, or use a tunneling service which will translate traffic from IPV4 addresses to and from IPV6 addresses.

Upvotes: 4

Related Questions