t_rcvdis(3xti) t_rcvdis(3xti)
Name
t_rcvdis - retrieve information from disconnect
Syntax
#include <xti.h>
int t_rcvdis(fd, discon)
int fd;
struct t_discon *discon;
Arguments
fd Identifies the local transport endpoint.
discon Points to a t_discon structure containing the following members:
struct netbuf udata;
int reason;
int sequence:
The members of the t_discon struct have the following meanings:
udata Identifies any user data that was sent with the disconnect.
reason Specifies the reason for the disconnect through a protocol-dependent reason code.
sequence Identifies an outstanding connect indication with which the connection is associated. The sequence field is only
meaningful when is issued by a passive transport user who has executed one or more functions and is processing the
resulting connect indications. If a disconnect indication occurs, sequence can be used to identify which of the out-
standing connect indications is associated with the disconnect.
Description
This function is used to identify the cause of a disconnect and to retrieve any user data sent with the disconnect.
If a user does not care if there is incoming data and does not need to know the value of reason or sequence, discon may be NULL and any
user data associated with the disconnect is discarded. However, if a user has retrieved more than one outstanding connect indication, by
means of and discon is NULL, the user will be unable to identify with which connect indication the disconnect is associated.
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Parameters Before Call After Call
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fd x /
discon->udata.maxlen x /
discon->udata.len / x
discon->udata.buf x (?)
discon->reason / x
discon->sequence / ?
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Return Values
Upon successful completion, a value of 0 is returned. On failure, a value of -1 is returned, and is set to indicate the error.
Diagnostics
On failure, t_errno is set to one of the following:
[TBADF] The specified file descriptor fd does not refer to a transport endpoint.
[TOUTSTATE] The function was issued in the wrong sequence on the transport endpoint referenced by fd.
[TNODIS] No disconnect indication currently exists on the specified transport endpoint.
[TBUFOVFLW] The number of bytes allocated for incoming data is not sufficient to store the data. If fd is a passive endpoint with
ocnt > 1, it remains in state T_INCON; otherwise, the endpoint state is set to T_IDLE. The disconnect indication infor-
mation to be returned in discon will be discarded.
[TNOTSUPPORT] This function is not supported by the underlying transport provider.
[TSYSERR] A system error has occurred during execution of this function.
See Also
t_alloc(3xti), t_connect(3xti), t_listen(3xti), t_open(3xti), t_snddis(3xti)
t_rcvdis(3xti)