Offset Contents
0 Pointer to address to be filled in
4 Size of address block
8 Pointer to array of buffer descriptors
12 Number of buffer descriptors in use
16 Pointer to ancillary data, if any
20 Size of ancillary data
24 Flags for received data
Or, in C:
struct msghdr {
struct sockaddr *msg_name; /* optional address */
unsigned int msg_namelen; /* size of address */
struct iovec *msg_iov; /* scatter/gather array */
unsigned int msg_iovlen; /* # elements in msg_iov */
char *msg_control; /* ancillary data */
unsigned int msg_controllen; /* ancillary data buffer length */
int msg_flags; /* flags on received message */
};
This descriptor format was introduced with Internet 5.00 and should be used in preference to the obsolete msghdr used by Internet 4.xx.
[sh-index] Back to list of manuals
|
| |
