1udpcluster(n)Lightweight UDP based tool for cluster node discoveryudpcluster(n)
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NAME

8       udpcluster - UDP Peer-to-Peer cluster
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SYNOPSIS

11       package require Tcl  8.5
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13       package require udpcluster  ?0.3.3?
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15       package require ip
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17       package require nettool
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19       package require comm
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21       package require interp
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23       package require dicttool
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25       package require cron
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DESCRIPTION

30       This  package is a lightweight alternative to Zeroconf. It utilizes UDP
31       packets to populate a table of services provided by each node on a  lo‐
32       cal  network.  Each  participant  broadcasts  a key/value list in plain
33       UTF-8 which lists what ports are open, and what protocols are  expected
34       on  those  ports.  Developers  are free to add any additional key/value
35       pairs beyond those.
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37       Using udpcluster.
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39       For every service you wish to publish invoke:
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41              cluster::publish echo@[cluster::macid] {port 10000 protocol echo}
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44       To query what services are available on the local network:
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47              set results [cluster::search PATTERN]
48              # And inside that result...
49              echo@LOCALMACID {
50                 port 10000
51                 protocol echo
52              }
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55       To unpublish a service:
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58              cluster::unpublish echo@[cluster::macid]
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61       Results will Historical Notes:
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63       This tool was originally known as nns::cluster, but as development pro‐
64       gressed,  it was clear that it wasn't interacting with any of the other
65       facilities in NNS.
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BUGS, IDEAS, FEEDBACK

68       This document, and the package it describes, will  undoubtedly  contain
69       bugs  and  other problems.  Please report such in the category nameserv
70       of the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist].   Please
71       also  report any ideas for enhancements you may have for either package
72       and/or documentation.
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74       When proposing code changes, please provide unified diffs, i.e the out‐
75       put of diff -u.
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77       Note  further  that  attachments  are  strongly  preferred over inlined
78       patches. Attachments can be made by going  to  the  Edit  form  of  the
79       ticket  immediately  after  its  creation, and then using the left-most
80       button in the secondary navigation bar.
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KEYWORDS

83       name service, server
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CATEGORY

86       Networking
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89       Copyright (c) 2016-2018 Sean Woods <yoda@etoyoc.com>
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94tcllib                               0.3.3                       udpcluster(n)
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