socksetup
nsock = socksetup(src, host, svcname, &socks);
static ssize_t socksetup(const char *, const char *, const char *,
static int *socksetup(int _af, int _debuglvl);
finet = socksetup(family, socket_debug);
static struct socklist *socksetup(struct addrinfo *, const char *, mode_t);
sl = socksetup(res, name, mode);