ultrix man page for t_look

Query: t_look

OS: ultrix

Section: 3xti

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

t_look(3xti)															      t_look(3xti)

Name
       t_look - look at the current event on a transport endpoint

Syntax
       #include <xti.h>

       int t_look(fd)
       int fd;

Arguments
       fd	 Identifies the transport endpoint where the current event is returned.

Description
       This  function  returns the current event on the transport endpoint specified by fd. This function enables a transport provider to notify a
       transport user of an asynchronous event when the user is issuing functions in synchronous mode. Certain events require immediate  notifica-
       tion of the user and are indicated by a specific error, [TLOOK], on the current or next function to be executed.

       This function also enables a transport user to poll a transport endpoint periodically for asynchronous events.

       --------------------------------------
       Parameters   Before Call   After Call
       --------------------------------------
       fd	    x		  /
       --------------------------------------

Return Values
       Upon  successful  completion, returns a value that indicates which of the allowable events has occurred or returns zero if no event exists.
       One of the following events is returned:

		 T_LISTEN	   Connection indication received

		 T_CONNECT	   Connect confirmation received

		 T_DATA 	   Normal data received

		 T_EXDATA	   Expedited data received

		 T_DISCONNECT	   Disconnect received

		 T_UDERR	   Datagram error indication

		 T_ORDREL	   Orderly release indication

		 T_GODATA	   Flow control restrictions on normal data flow have been lifted. Normal data can be sent again.

		 T_GOEXDATA	   Flow control restrictions on expedited data flow have been lifted. Expedited data can be sent again.

       On failure, -1 is returned, and t_errno is set to indicate the error.

Diagnostics
       On failure, t_errno  is set to one of the following:

       [TBADF]		   The specified file descriptor does not refer to a transport endpoint.

       [TSYSERR]	   A system error has occurred during execution of this function.

See Also
       t_open(3xti), t_snd(3xti), t_sndudata(3xti)

																      t_look(3xti)
Related Man Pages
t_look(3) - osf1
t_look(3xti) - ultrix
t_look(3nsl) - osx
t_look(3nsl) - minix
t_look(3nsl) - posix
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