int outgoing :1; /* true if we can write on this sock */
int accepting :1; /* true if master incoming sock in tcp */
int meas :1; /* true if this is an experiment socket instead of messaging */
+ int recv_ok :1; /* true if it is valid to recv() on the socket (false if it is a file) */
unsigned long int buf_size; /* what to say to the OS. field here to remember it when accepting */
