DAT_CR_QUERY(3DAT) Direct Access Transport Library Functions

NAME

dat_cr_query - provide parameters of the Connection Request

SYNOPSIS

cc [ flag... ] file... -ldat [ library... ]
#include <dat/udat.h>

DAT_RETURN
dat_cr_query (
IN DAT_CR_HANDLE cr_handle,
IN DAT_CR_PARAM_MASK cr_param_mask,
OUT DAT_CR_PARAM *cr_param
)

PARAMETERS

cr_handle
Handle for an instance of a Connection Request.


cr_param_mask
Mask for Connection Request parameters.


cr_param
Pointer to a Consumer-allocated structure that the
Provider fills for Consumer-requested parameters.

DESCRIPTION

The dat_cr_query() function provides to the Consumer parameters of
the Connection Request. The Consumer passes in a pointer to the
Consumer-allocated structures for Connection Request parameters that
the Provider fills.


The cr_param_mask parameter allows Consumers to specify which
parameters to query. The Provider returns values for cr_param_mask
requested parameters. The Provider can return values for any other
parameters.

RETURN VALUES

DAT_SUCCESS
The operation was successful


DAT_INVALID_HANDLE
The cr_handle handle is invalid.


DAT_INVALID_PARAMETER
The cr_param_mask parameter is invalid.

USAGE

The Consumer uses dat_cr_query() to get information about requesting
a remote Endpoint as well as a local Endpoint if it was allocated by
the Provider for the arrived Connection Request. The local Endpoint
is created if the Consumer used PSP with DAT_PSP_PROVIDER as the
value for psp_flags. For the remote Endpoint, dat_cr_query()
provides remote_ia_address and remote_port_qual. It also provides
remote peer private_data and its size.

ATTRIBUTES

See attributes(7) 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(7)

July 16, 2004 DAT_CR_QUERY(3DAT)