t_sndrel(3)t_sndrel(3)NAMEt_sndrel() - initiate an orderly release
The function is used in connection-oriented mode to initiate an orderly
release at a transport endpoint specified by fd, which is a file
descriptor previously returned by the function.
After this orderly release is indicated, the transport user should not
try to send more data through that transport endpoint. An attempt to
send more data to a released transport endpoint may block continuously.
However, the transport user may continue to receive data over the con‐
nection until an orderly release indication is received. This function
is an optional service of the transport provider and is only supported
if the transport provider returned service type on or
HP OSI XTI does not support
is not fork-safe.
Upon successful completion, a value of 0 is returned. Otherwise, a
value of −1 is returned and is set to indicate the error.
On failure, is set to one of the following:
[TBADF] The specified identifier does not refer to a trans‐
[TFLOW] Asynchronous mode is indicated because was set, but
the transport provider cannot accept a release
because of flow-control restrictions.
[TLOOK] An asynchronous event has occurred on this trans‐
port endpoint and requires immediate attention.
[TNOTSUPPORT] This function is not supported by the underlying
[TSYSERR] A system error has occurred during execution of
[TPROTO] (XTI only) This error indicates that a communica‐
tion problem has been detected between XTI and the
transport provider for which there is no other
suitable XTI (
SEE ALSOt_getinfo(3), t_open(3), t_rcvrel(3), thread_safety(5).