const BIO_ADDRINFO *next;
int sock_family, sock_type, sock_protocol, sock_port;
const BIO_ADDR *sock_address;
+ int sock_family_fallback = AF_UNSPEC;
+ const BIO_ADDR *sock_address_fallback = NULL;
int sock_options = BIO_SOCK_REUSEADDR;
int ret = 0;
&& BIO_ADDRINFO_protocol(next) == sock_protocol) {
if (sock_family == AF_INET
&& BIO_ADDRINFO_family(next) == AF_INET6) {
+ /* In case AF_INET6 is returned but not supported by the
+ * kernel, retry with the first detected address family */
+ sock_family_fallback = sock_family;
+ sock_address_fallback = sock_address;
sock_family = AF_INET6;
sock_address = BIO_ADDRINFO_address(next);
} else if (sock_family == AF_INET6
}
asock = BIO_socket(sock_family, sock_type, sock_protocol, 0);
+ if (asock == INVALID_SOCKET && sock_family_fallback != AF_UNSPEC) {
+ asock = BIO_socket(sock_family_fallback, sock_type, sock_protocol, 0);
+ sock_address = sock_address_fallback;
+ }
if (asock == INVALID_SOCKET
|| !BIO_listen(asock, sock_address, sock_options)) {
BIO_ADDRINFO_free(res);