Limit the avatar requests by the server - clients may only upload one avatar within a certain time. This is checked by IP address, so two players within the same NAT system might have to wait for a few seconds.

src/net/linux/socket_helper.cpp

@@ -34,6 +34,12 @@ socket_string_to_addr(const char *str, int addrFamily, struct sockaddr *addr, in
 		return false;
 }
 
+bool
+socket_addr_to_string(struct sockaddr *addr, int /*addrLen*/, int addrFamily, char *str, int strLen)
+{
+	return (inet_ntop(addrFamily, addr, str, strLen) != NULL);
+}
+
 bool
 socket_resolve(const char *str, const char *port, int addrFamily, int sockType, int protocol, struct sockaddr *addr, int addrLen)
 {