+ if (host && hostlen > 0) {
+ struct hostent *ent = NULL;
+ uint32_t a;
+ if (!(flags & NI_NUMERICHOST))
+ ent = gethostbyaddr((const char *)&sin->sin_addr,
+ sizeof(sin->sin_addr), AF_INET);
+
+ if (ent) {
+ snprintf(host, hostlen, "%s", ent->h_name);
+ } else if (flags & NI_NAMERQD) {
+ return EAI_NONAME;
+ } else {
+ a = ntohl(sin->sin_addr.s_addr);
+ snprintf(host, hostlen, "%d.%d.%d.%d",
+ ((a >> 24) & 0xff), ((a >> 16) & 0xff),
+ ((a >> 8) & 0xff), ( a & 0xff));
+ }
+ }
+
+ if (serv && servlen > 0) {
+ struct servent *ent = NULL;
+ if (!(flags & NI_NUMERICSERV))
+ ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
+
+ if (ent) {
+ snprintf(serv, servlen, "%s", ent->s_name);
+ } else
+ snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
+ }
+
+ return 0;
+}
+
+const char *ff_gai_strerror(int ecode)
+{
+ switch(ecode) {
+ case EAI_FAIL : return "A non-recoverable error occurred";
+ case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family";
+ case EAI_NONAME : return "The name does not resolve for the supplied parameters";
+ }
+
+ return "Unknown error";
+}
+#endif
+
+int ff_socket_nonblock(int socket, int enable)
+{
+#if HAVE_WINSOCK2_H
+ return ioctlsocket(socket, FIONBIO, &enable);
+#else
+ if (enable)
+ return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
+ else
+ return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
+#endif