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t_rcvrel - Acknowledges receipt of an orderly release indication


XTI Library (libxti.a)


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


Interfaces documented on this reference page conform to industry standards as follows: t_rcvrel: 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_rcvrel() 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 that has been released.


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


The t_rcvrel() XTI function is used in connection-oriented mode to acknowledge receipt of an orderly release indication at a transport endpoint. The released endpoint is specified by a file descriptor previously returned by the t_open() function. After receipt of this orderly release indication, at the transport endpoint specified by the file descriptor, a transport user should not try to receive additional data from that transport endpoint. Any attempt to receive more data from a released transport endpoint blocks continuously. However, a transport user may continue to send data across the connection until a release is sent by a transport user who invokes a t_sndrel() function call. The t_rcvrel() function should not be used unless the servtype type-of- service returned by the t_open() or t_getinfo() functions 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 the error.


If the t_rcvrel() 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. [TNOREL] No orderly release indication currently exists at the transport endpoint specified by the fd parameter. [TLOOK] An asynchronous event has occurred on the transport endpoint specified by the fd parameter and requires immediate attention. [TSYSERR] A system error occurred during execution of this function. [TOUTSTATE] The t_rcvrel() function was issued in the wrong sequence at the transport endpoint referenced by the fd parameter. [TNOTSUPPORT] This function is not supported by the underlying transport provider. [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_sndrel(3)