tt_default_session_set(3) ToolTalk Functions tt_default_session_set(3)NAMEtt_default_session_set - set the current default session identifier
SYNOPSIS
#include <Tt/tt_c.h>
Tt_status tt_default_session_set(const char *sessid);
DESCRIPTION
The tt_default_session_set() function sets the current default session
identifier.
The ToolTalk service uses the initial user session as the default ses‐
sion and supports one session per procid. The application can make
this call before it calls tt_open(3) to specify the session to which it
wants to connect.
The sessid argument is a pointer to the unique identifier for the ses‐
sion in which the procid is interested.
RETURN VALUE
Upon successful completion, the tt_default_session_set() function
returns the status of the operation as one of the following Tt_status
values:
TT_OK The operation completed successfully.
TT_ERR_NOMP
The ttsession(1) process is not running and the ToolTalk
service cannot restart it.
TT_ERR_PROCID
The current default process identifier is out of date or
invalid.
TT_ERR_SESSION
The specified ToolTalk session is out of date or invalid.
APPLICATION USAGE
To change to another opened session, the application must use the
tt_default_procid_set() function.
To join other sessions, the procid must first set the new session as
the default session, and then initialize and register with the ToolTalk
service. The calls required must be in the following order:
tt_default_session_set()tt_open(3)
The tt_open(3) may create another ToolTalk procid, the connection to
which is identified by a procid. Only one ToolTalk session per procid
is allowed. (However, multiple procids are allowed in a client.)
There are no API calls to determine to which session a particular pro‐
cid is connected. If it is important for the application to know the
session to which it is connected, it must make the following calls in
the indicated order:
tt_open(3)tt_default_session(3)
The application can then store the information by indexing it by the
procid returned by the tt_open(3) call.
SEE ALSOtt_c(5), tt_open(3), tt_default_procid(3), tt_default_session(3).
ToolTalk 1.3 1 March 1996 tt_default_session_set(3)
