SLPFINDSRVS(3SLP) Service Location Protocol Library Functions

NAME

SLPFindSrvs - return service URLs

SYNOPSIS

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

SLPError SLPFindSrvs(SLPHandle hSLP, const char *pcServiceType,
const char *pcScopeList, const char *pcSearchFilter,
SLPSrvURLCallback *callback, void *pvCookie);

DESCRIPTION

The SLPFindSrvs() function issues a request for SLP services. The
query is for services on a language-specific SLPHandle. It returns
the results through the callback. The parameters will determine the
results.


If an error occurs in starting the operation, one of the SLPError
codes is returned.

PARAMETERS

hSLP
The language-specific SLPHandle on which to search
for services. It cannot be NULL.


pcServiceType
The service type string for the request. The
pcServiceType can be discovered by a call to
SLPSrvTypes(). Examples of service type strings
include

"service:printer:lpr"

or

"service:nfs"

pcServiceType cannot be NULL.


pcScopeList
A pointer to a char containing a comma-separated
list of scope names. It cannot be NULL or an
empty string, "".


pcSearchFilter
A query formulated of attribute pattern matching
expressions in the form of a LDAPv3 search filter.
See RFC 2254. If this filter is empty, "", all
services of the requested type in the specified
scopes are returned. It cannot be NULL.


callback
A callback through which the results of the
operation are reported. It cannot be NULL.


pvCookie
Memory passed to the callback code from the client.
It can be 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 SLPFindSrvs()

The following example finds all advertisements for printers
supporting the LPR protocol with the dpi attribute 300 in the default
scope:


SLPError err;
SLPHandle hSLP;
SLPSrvURLCallback srvngst;

err = SLPFindSrvs(hSLP,
"service:printer:lpr",
"default",
"(dpi=300)",
srvngst,
NULL);

ENVIRONMENT VARIABLES

SLP_CONF_FILE
When set, use this file for configuration.

SEE ALSO

slp_api(3SLP), slp.conf(5), slpd.reg(5), attributes(7), slpd(8)


System Administration Guide: Network Services


Howes, T. RFC 2254, The String Representation of LDAP Search Filters.
The Internet Society. 1997.


Guttman, E., Perkins, C., Veizades, J., and Day, M. RFC 2608,
Service Location Protocol, Version 2. The Internet Society. June
1999.


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

January 16, 2003 SLPFINDSRVS(3SLP)