ref: 1569edc8dfb4779af4e558ea7b2c4732f0f69294
dir: /sys/src/cmd/unix/drawterm/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_send(int, void*, int, int);
int so_recv(int, void*, int, int);
int so_accept(int, unsigned long*, unsigned short*);
int so_getservbyname(char*, char*, char*);
int so_gethostbyname(char*, char**, int);
char* hostlookup(char*);