{section: Converting each socket functions }
Now, I would like to enumerate all the functions that must be addressed in proxy socket interface.
-*:convert_ip_to_hostname
+
+*:is_ipaddr (internet.c)
+
+It validates whether given IP address is IP address or not. Its implementation is strictly limited to IPv4. I think it is better to code whole new function rather than converting existing function.
+
+*:convert_ip_to_hostname (condor_netdb.c)
This one is little tricky. Given parameter, const char* addr is actually in_addr*. Inside of the function, it explicitly type-cast const char* addr to in_addr*. It calls inet_ntoa and convert every '.' char to '-'.
