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31.4 Providing Services with SLP
Many applications in SUSE Linux Enterprise already have integrated SLP support
through the use of the libslp library. If a service has not been compiled with SLP
support, use one of the following methods to make it available with SLP:
Static Registration with /etc/slp.reg.d
Create a separate registration file for each new service. The following is an example
of a file for registering a scanner service:
## Register a saned service on this system
## en means english language
## 65535 disables the timeout, so the service registration does
## not need refreshes
service:scanner.sane://$HOSTNAME:6566,en,65535
watch-port-tcp=6566
description=SANE scanner daemon
The most important line in this file is the service URL, which begins with
service:. This contains the service type (scanner.sane) and the address
under which the service is available on the server. $HOSTNAME is automatically
replaced with the full hostname. The name of the TCP port on which the relevant
service can be found follows, separated by a colon. Then enter the language in
which the service should appear and the duration of registration in seconds. These
should be separated from the service URL by commas. Set the value for the duration
of registration between 0 and 65535. 0 prevents registration. 65535 removes all
restrictions.
The registration file also contains the two variables watch-tcp-port and
description. watch-tcp-port links the SLP service announcement to
whether the relevant service is active by having slpd check the status of the service.
The second variable contains a more precise description of the service that is dis-
played in suitable browsers.
TIP: YaST and SLP
Some services brokered by YaST, such as an installation server or YOU
server, perform this registration automatically when you activate SLP in the
module dialogs. YaST then creates registration files for these services.
SLP Services in the Network
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