Hi.
I have a function which checks if the sa_family is AF_INET or AF_INET6 and formats the client address as IPv4 (e.g. 127.0.0.1) or IPv6 (e.g. ::1) into a string. However, when I enable the dual stack in MHD, it always returns AF_INET6 in sa_family even when passing -4 as parameter in curl.
I'm using MHD_get_connection_info(..., MHD_CONNECTION_INFO_CLIENT_ADDRESS)->client_addr to get the client address and the formatting function is in attachment below.
Is there any flag to force MHD to return AF_INET when the client connects explicitly as IPv4?
Thank you!
// Attachment: function to format the client address as IPv4 or IPv6
int get_ip(const void *socket, char *buf, size_t size) {
const struct sockaddr *sa;
if (!socket || !buf || (ssize_t) size < 0)
return EINVAL;
sa = socket;
switch (sa->sa_family) {
case AF_INET:
if (!inet_ntop(AF_INET, &(((struct sockaddr_in *) sa)->sin_addr), buf,
size))
return errno;
break;
case AF_INET6:
if (!inet_ntop(AF_INET6, &(((struct sockaddr_in6 *) sa)->sin6_addr), buf,
size))
return errno;
break;
default:
return EINVAL;
}
return 0;
}
--