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nns(n) Name service facility nns(n) 





NAME


nns - Name service facility, Commandline Client Application






SYNOPSIS


nns bind ?-host host? ?-port
    port? name data


nns search ?-host host? ?-port
    port? ?-continuous? ?pattern?


nns ident ?-host host? ?-port
    port?


nns who










DESCRIPTION


Please read Name service facility, introduction first.


The application described by this document, nns, is a
    simple command line client for the nano name service facility provided by
    the Tcllib packages nameserv, and nameserv::server. Beyond
    that the application's sources also serve as an example of how to use the
    client package nameserv. All abilities of a client are covered, from
    configuration to registration of names to searching.


This name service facility has nothing to do with the Internet's
    Domain Name System, otherwise known as DNS. If the reader is
    looking for a package dealing with that please see either of the packages
    dns and resolv, both found in Tcllib too.




USE CASES


nns was written with the following two main use cases in
    mind.



  
[1]

  
Registration of a name/data pair in the name service.

  
[2]

  
Searching the name service for entries matching a glob pattern.




Beyond the above we also want to be able to identify the client,
    and get information about the name service.






COMMAND LINE



  

  
This form registers the name/data pair in the specified name
      service. In this form the command will not exit to keep the
      registration alive. The user has to kill it explicitly, either by sending
      a signal, or through the job-control facilities of the shell in use. It
      will especially survive the loss of the connection to the name service and
      reestablish the name/data pair when the connection is
      restored.
    
The options to specify the name service will be explained
        later, in section OPTIONS.

  

  

  
This form searches the specified name service for entries matching the
      glob-pattern and prints them to stdout, with each entry on its own
      line. If no pattern is specified it defaults to *, matching
      everything.
    
The options to specify the name service will be explained
        later, in section OPTIONS.

    
If the option -continuous is specified the client will
        not exit after performing the search, but start to continuously monitor
        the service for changes to the set of matching entries, appropriately
        updating the display as changes arrive. In that form it will especially
        also survive the loss of the connection to the name service and
        reestablish the search when the connection is restored.

  

  

  
This form asks the specified name service for the version and features of
      the name service protocol it supports and prints the results to stdout.
    
The options to specify the name service will be explained
        later, in section OPTIONS.

  

  

  
This form prints name, version, and protocol version of the application to
      stdout.








OPTIONS


This section describes all the options available to the user of
    the application



  

  
If this option is not specified it defaults to localhost. It
      specifies the name or ip-address of the host the name service to talk to
      is running on.

  

  
If this option is not specified it defaults to 38573. It specifies
      the TCP port the name service to talk to is listening on for
    requests.










BUGS, IDEAS, FEEDBACK


This document, and the package it describes, will undoubtedly
    contain bugs and other problems. Please report such in the category
    nameserv of the Tcllib Trackers
    [http://core.tcl.tk/tcllib/reportlist]. Please also report any ideas for
    enhancements you may have for either package and/or documentation.


When proposing code changes, please provide unified diffs,
    i.e the output of diff -u.


Note further that attachments are strongly preferred over
    inlined patches. Attachments can be made by going to the Edit form of
    the ticket immediately after its creation, and then using the left-most
    button in the secondary navigation bar.






SEE ALSO


nameserv(n), nameserv::common(n)






KEYWORDS


application, client, name service






CATEGORY


Networking






COPYRIGHT


Copyright (c) 2007-2008 Andreas Kupries <andreas_kupries@users.sourceforge.net>








  

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