A-24
A2
C.6
comm_timeout
The comm_timeout procedure is used to read/modify the TCP timeout value.
An inactive TCP channel will be left open this length of time before being
closed. A value of zero means no timeout checking.
struct Comm_Timeout_Parms {
unsigned
int
action;
unsigned
int
timeout;
};
struct Comm_Timeout_Resp {
unsigned
int
error;
unsigned int timeout;
};
Comm_Timeout_Resp comm_timeout (Comm_Timeout_Parms) = 6;
The action value determines whether the client wishes to execute a read of
the current setting, or a modifi cation of the current value.
action = 0 = read of current value
action = 1 = modify current value
If the action value is other than 0 or 1, then an error value of 5 is re-
turned.
If the RPC message is of insuffi cient length to satisfy the required length,
an error value of 1 is returned.
The timeout value is not range checked, thus it is possible to defi ne an
impossible timeout period. A timeout value of zero prevents timeout check-
ing. If a channel remains inactive for the specifi ed timeout period, then the
channel is closed in the belief that the TCP connection is broken.
The comm_timeout procedure applies only to the VXI-11 core and Edevice
confi guration channels. The timeout period is defi ned as the number of
seconds until a timeout is detected. The returned Comm_Timeout_Resp
structure will always contain the current communication timeout value,
irrespective of the error value.
error Meaning
0
No error
1
Syntax error
5
Parameter error
Summary of Contents for N4865A
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