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t_sndrel - Initiates an endpoint connect orderly release


XTI Library (libxti.a)


#include <xti.h> int t_sndrel( int fd) ;


Interfaces documented on this reference page conform to industry standards as follows: t_sndrel: XPG4-UNIX Refer to the standards(5) reference page for more information about industry standards and associated tags.


The following table summarizes the relevance of input parameter data before and after t_sndrel() is called: Parameter Before Call After Call ____________________________________ fd y n Notes to Table: y This is a meaningful parameter. n This is not a meaningful parameter. fd Specifies a file descriptor returned by the t_open() function that identifies a local transport endpoint where an orderly release is wanted.


The t_sndrel() function can be called only in the T_DATAXFER and T_INREL transport provider states.


The t_sndrel() XTI function is used in connection-oriented mode to initiate an orderly release at a transport endpoint specified by a file descriptor previously returned by the t_open() 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, a transport user may continue to receive data over the connection until an orderly release indication is received. The t_sndrel() function should not be used unless the servtype type-of- service returned by the t_open() or t_getinfo() function is T_COTS_ORD (supports connection-mode service with the optional orderly release facility).


Upon successful completion, a value of 0 (zero) is returned. Otherwise, a value of -1 is returned and t_errno is set to indicate an error.


If the t_sndrel(|) function fails, t_errno may be set to one of the following values: [TBADF] File descriptor fd does not refer to a valid transport endpoint. [TFLOW] Asynchronous mode is indicated because O_NONBLOCK was set, but the transport provider cannot accept a release because of flow-control restrictions. [TLOOK] An asynchronous event has occurred on this transport endpoint and requires immediate attention. [TNOTSUPPORT] This function is not supported by the underlying transport provider. [TOUTSTATE] The t_sndrel() function was issued in the wrong sequence at the transport endpoint specified by the fd parameter. [TSYSERR] A system error occurred during execution of this function. [TPROTO] This error indicates that a communication problem has been detected between XTI and the transport provider for which there is no other suitable XTI(t_errno).


Functions: t_getinfo(3), t_open(3), t_rcvrel(3)