ref: 82b1d4d6c238074e42e8721a4b8f0d3f7e62756d
dir: /kern/devip.h/
enum { S_TCP, S_UDP }; int so_socket(int type); void so_connect(int, unsigned long, unsigned short); void so_getsockname(int, unsigned long*, unsigned short*); void so_bind(int, int, unsigned short); void so_listen(int); int so_accept(int, unsigned long*, unsigned short*); int so_getservbyname(char*, char*, char*); int so_gethostbyname(char*, char**, int); char* hostlookup(char*);