dat_psp_free(3DAT) Direct Access Transport Library Functions dat_psp_free(3DAT)NAME
dat_psp_free - destroy an instance of the Public Service Point
SYNOPSIS
cc [ flag... ] file... -ldat [ library... ]
#include <dat/udat.h>
DAT_RETURN
dat_psp_free (
IN DAT_PSP_HANDLE psp_handle
)
PARAMETERS
psp_handle Handle for an instance of the Public Service Point.
DESCRIPTION
The dat_psp_free() function destroys a specified instance of the Public Service Point.
Any incoming Connection Requests for the Connection Qualifier on the destroyed Service Point it had been listening on are automatically
rejected by the Provider with the return analogous to the no listening Service Point.
The behavior of the Connection Requests in progress is undefined and left to an implementation. But it must be consistent. This means that
either a Connection Requested Event has been generated for the Event Dispatcher associated with the Service Point, including the creation
of the Connection Request instance, or the Connection Request is rejected by the Provider without any local notification.
This operation shall have no effect on previously generated Connection Requested Events. This includes Connection Request instances and,
potentially, Endpoint instances created by the Provider.
The behavior of this operation with creation of a Service Point on the same Connection Qualifier at the same time is not defined. Consumers
are advised to avoid this scenario.
Use of the handle of the destroyed Public Service Point in any consequent operation fails.
RETURN VALUES
DAT_SUCCESS The operation was successful.
DAT_INVALID_HANDLE The psp_handle parameter is invalid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard: uDAPL, 1.1, 1.2 |
+-----------------------------+-----------------------------+
|MT-Level |Unsafe |
+-----------------------------+-----------------------------+
SEE ALSO libdat(3LIB), attributes(5)SunOS 5.11 16 Jul 2004 dat_psp_free(3DAT)
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dat_rsp_create(3DAT) Direct Access Transport Library Functions dat_rsp_create(3DAT)NAME
dat_rsp_create - create a Reserved Service Point
SYNOPSIS
cc [ flag... ] file... -ldat [ library... ]
#include <dat/udat.h>
DAT_RETURN
dat_rsp_create (
IN DAT_IA_HANDLE ia_handle,
IN DAT_CONN_QUAL conn_qual,
IN DAT_EP_HANDLE ep_handle,
IN DAT_EVD_HANDLE evd_handle,
OUT DAT_RSP_HANDLE *rsp_handle
)
PARAMETERS
ia_handle Handle for an instance of DAT IA.
conn_qual Connection Qualifier of the IA the Reserved Service Point listens to.
ep_handle Handle for the Endpoint associated with the Reserved Service Point that is the only Endpoint that can accept a Connection
Request on this Service Point. The value DAT_HANDLE_NULL requests the Provider to associate a Provider-created Endpoint with
this Service Point.
evd_handle The Event Dispatcher to which an event of Connection Request arrival is generated.
rsp_handle Handle to an opaque Reserved Service Point.
DESCRIPTION
The dat_rsp_create() function creates a Reserved Service Point with the specified Endpoint that generates, at most, one Connection Request
that is delivered to the specified Event Dispatcher in a Notification event.
RETURN VALUES
DAT_SUCCESS The operation was successful.
DAT_INSUFFICIENT_RESOURCES The operation failed due to resource limitations.
DAT_INVALID_HANDLE The ia_handle, evd_handle, or ep_handle parameter is invalid.
DAT_INVALID_PARAMETER The conn_qual parameter is invalid.
DAT_INVALID_STATE Parameter in an invalid state. For example, an Endpoint was not in the Idle state.
DAT_CONN_QUAL_IN_USE Specified Connection Qualifier is in use.
USAGE
The usage of a Reserve Service Point is as follows:
o The DAT Consumer creates a Local Endpoint and configures it appropriately.
o The DAT Consumer creates a Reserved Service Point specifying the Local Endpoint.
o The Reserved Service Point performs the following:
o Collects native transport information reflecting a received Connection Request.
o Creates a Pending Connection Request.
o Creates a Connection Request Notice (event) that includes the Pending Connection Request (which includes, among others,
Reserved Service Point Connection Qualifier, its Local Endpoint, and information about remote Endpoint).
o Delivers the Connection Request Notice to the Consumer-specified target (CNO) evd_handle. The Local Endpoint is transitioned
from Reserved to Passive Connection Pending state.
o Upon receiving a connection request, or at some time subsequent to that, the DAT Consumer must either accept() or reject() the
Pending Connection Request.
o If accepted, the original Local Endpoint is now in a Connected state and fully usable for this connection, pending only native
transport mandated RTU messages. This includes binding it to the IA port if that was not done previously. The Consumer is noti-
fied that the Endpoint is in a Connected state by a Connection Established Event on the Endpoint connect_evd_handle.
o If rejected, the Local Endpoint point transitions into Unconnected state. The DAT Consumer can elect to destroy it or reuse it
for other purposes.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard: uDAPL, 1.1, 1.2 |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO libdat(3LIB), attributes(5)SunOS 5.11 16 Jul 2004 dat_rsp_create(3DAT)