fetch_resolve
if ((cliai = fetch_resolve(addr, 0, af)) == NULL)
if ((sais = fetch_resolve(host, port, af)) == NULL)
if ((cais = fetch_resolve(bindaddr, 0, af)) == NULL)
if ((sais = fetch_resolve(sockshost, socksport, af)) == NULL) {
struct addrinfo *fetch_resolve(const char *, int, int);