void buffer_output(void);
void unbuffer_output(void);
void flush_output(void);
-void client_write (char *buf, int nbytes);
+int client_write (char *buf, int nbytes);
int client_read_to (char *buf, int bytes, int timeout);
int client_read (char *buf, int bytes);
int client_getln (char *buf, int maxbytes);