if(getaddrinfo(host, port, &hints, &res) != 0)
eprint("error: cannot resolve hostname '%s':", host);
for(r = res; r; r = r->ai_next) {
if(getaddrinfo(host, port, &hints, &res) != 0)
eprint("error: cannot resolve hostname '%s':", host);
for(r = res; r; r = r->ai_next) {