Working with IPv6

Please recall the hints.ai_family = AF_INET part of time_server.c near the beginning of the main() function. If this line is changed to hints.ai_family = AF_INET6, then your web server listens for IPv6 connections instead of IPv4 connections. This modified file is included in the GitHub repository as time_server_ipv6.c.

In this case, you should navigate your web browser to http://[::1]:8080 to see the web page. ::1 is the IPv6 loopback address, which tells the web browser to connect to the same machine it's running on. In order to use IPv6 addresses in URLs, you need to put them in square brackets, []. :8080 specifies the port number in the same way that we did for the IPv4 example.

Here is what you should see when compiling, running, and connecting a web browser to our time_server_ipv6 program:

Here is the web browser that's connected to our server using an IPv6 socket:

See time_server_ipv6.c for the complete program.