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NAME    [Toc]    [Back]

       sane-net - SANE network backend

DESCRIPTION    [Toc]    [Back]

       The  sane-net library implements a SANE (Scanner Access Now Easy) backend
 that provides access to image acquisition devices through a network
       connection.   This  makes  it possible to control devices attached to a
       remote host and also provides a means to grant  users  access  to  protected

DEVICE NAMES    [Toc]    [Back]

       This backend expects device names of the form:


       Where  host is the name of the (remote-) host and device is the name of
       the device on this host that should be addressed.  If the  device  name
       does  not contain a colon (:), then the entire string is treated as the
       device string for the default host.   The  default  host  is  the  host
       listed last in the configuration file (see below).

CONFIGURATION    [Toc]    [Back]

       The contents of the net.conf.  file is a list of host names that should
       be contacted for scan requests.	Empty lines and lines starting with  a
       hash mark (#) are ignored.  A sample configuration file is shown below:

	      # this is a comment

       The above list of host names can be extended at run-time using environment
  variable  SANE_NET_HOSTS.	 This environment variable is a colonseparated
 list of hostnames that should be contacted in addition to the
       hosts  mentioned  in the configuration file.  For example, a user could
       set the environment variable to the string:


       To request that hosts new.scanner.com  and  scanner.univ.edu  are  contacted
 in addition to the hosts listed above.

       For  this  backend to function properly, it is also necessary to define
       the sane service in /etc/services.  At present, the sane service should
       be defined using a line of the following form:

	      sane 6566/tcp # SANE network scanner daemon

       Note that port number 6566 has not been officially assigned to the SANE
       service and may change in the future.

FILES    [Toc]    [Back]

	      The  backend  configuration  file  (see  also   description   of
	      SANE_CONFIG_DIR below).

	      The static library implementing this backend.

	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT    [Toc]    [Back]

	      This environment variable specifies the list of directories that
	      may contain the configuration file.  Under UNIX, the directories
	      are separated by a colon (`:'), under OS/2, they	are  separated
	      by a semi-colon (`;').  If this variable is not set, the configuration
 file is searched in two default directories: first,  the
	      current working directory (".") and then in /etc/sane.d.	If the
	      value of the environment variable ends with the directory  separator
 character, then the default directories are searched after
	      the explicitly  specified  directories.	For  example,  setting
	      SANE_CONFIG_DIR  to  "/tmp/config:"  would result in directories
	      "tmp/config", ".", and "/etc/sane.d"  being  searched  (in  this

       SANE_NET_HOSTS    [Toc]    [Back]
	      A  colon-separated  list	of  host names to be contacted by this

       SANE_DEBUG_NET    [Toc]    [Back]
	      If the library was compiled with	debug  support	enabled,  this
	      environment  variable controls the debug level for this backend.
	      E.g., a value of 128 requests all debug output  to  be  printed.
	      Smaller levels reduce verbosity.

BUGS    [Toc]    [Back]

       If  saned  has  timed  out, the net backend may loop with authorization

SEE ALSO    [Toc]    [Back]

       sane(7), saned(1), sane-dll(5), scanimage(1)


AUTHOR    [Toc]    [Back]

       David Mosberger and Andreas Beck

				  10 Jun 2001			   sane-net(5)
[ Back ]
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