Metrologic Optimus R, Руководство по программированию

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Chapter 3 Terminal Specific Function Library 169
Syntax int socket_push (int conno);
int conno; /* connection number */
Example val = socket_push (conno);
Description The next TCP segment to be written, following a call to this function, will have
the PSH flag set in the TCP header. This is useful for indicating to the TCP on
the remote system that all internally buffered segments up through this segment
should be delivered to the application as soon as possible.
Return If successful, it returns 0.
Otherwise, it returns -1.
See Also
socket_fin
socket_rxstat
Purpose To get the receive status for a connection.
Syntax int socket_rxstat (int conno);
int conno; /* connection number */
Example val = socket_rxstat (conno);
Description The function gets the receive status for a connection.
Return The return value can be one of the following:
S_EOF 0x01 FIN has been received
S_UNREA 0x02 destination unreachable ICMP
S_FATAL 0x04 fatal error
S_RST 0x08 restart message received
S_SHUTRECV 0x10 receive has been shutdown
(active, not by receiving FIN)
See Also socket_txstat
socket_rxtout
Purpose To set the receive timeout for a connection.
Syntax int socket_rxtout (int conno, unsigned long val);
int conno; /* connection number */
unsigned long val; /* timeout in milli-second */
Example val = socket_rxtout (conno, timeout);
Description The function sets the receive timeout for a connection.