SLPOPEN(3SLP) Service Location Protocol Library Functions SLPOPEN(3SLP)


NAME


SLPOpen - open an SLP handle

SYNOPSIS


cc [ flag... ] file... -lslp [ library... ]
#include <slp.h>

SLPError SLPOpen(const char *pcLang, SLPBoolean isAsync, SLPHandle *phSLP);


DESCRIPTION


The SLPOpen() function returns a SLPHandle handle in the phSLP parameter
for the language locale passed in as the pcLang parameter.
The client indicates if operations on the handle are to be synchronous
or asynchronous through the isAsync parameter. The handle
encapsulates the language locale for SLP requests issued through the
handle, and any other resources required by the implementation.
SLP properties are not encapsulated by the handle, they are global.
The return value of the function is an SLPError code indicating
the status of the operation. Upon failure, the phSLP parameter is
NULL.


An SLPHandle can only be used for one SLP API operation at a time. If the
original operation was started asynchronously, any attempt to start an
additional operation on the handle while the original operation is
pending results in the return of an SLP_HANDLE_IN_USE error from the API
function. The SLPClose() function terminates any outstanding calls on
the handle.

PARAMETERS


pcLang
A pointer to an array of characters containing the
language tag set forth in RFC 1766 for the natural language
locale of requests issued on the handle. This parameter
cannot be NULL.


isAsync
An SLPBoolean indicating whether or not the SLPHandle should
be opened for an asynchronous operation.


phSLP
A pointer to an SLPHandle in which the open SLPHandle is
returned. If an error occurs, the value upon return is NULL.


ERRORS


This function or its callback may return any SLP error code. See the
ERRORS section in slp_api(3SLP).

EXAMPLES


Example 1: Using SLPOpen()




Use the following example to open a synchronous handle for the German
("de") locale:


SLPHandle HSLP; SLPError err; err = SLPOpen("de", SLP_FALSE, &hSLP)


ENVIRONMENT VARIABLES


SLP_CONF_FILE
When set, use this file for configuration.


SEE ALSO


slpd(1M), slp_api(3SLP), slp.conf(4), slpd.reg(4), attributes(5)


System Administration Guide: Network Services


Alvestrand, H. RFC 1766, Tags for the Identification of Languages.
Network Working Group. March 1995.


Kempf, J. and Guttman, E. RFC 2614, An API for Service Location. The
Internet Society. June 1999.


January 16, 2003 SLPOPEN(3SLP)