int serv_write(const char *buf, int nbytes);
int serv_putbuf(const StrBuf *string);
int serv_printf(const char *format,...)__attribute__((__format__(__printf__,1,2)));
int serv_write(const char *buf, int nbytes);
int serv_putbuf(const StrBuf *string);
int serv_printf(const char *format,...)__attribute__((__format__(__printf__,1,2)));