Hypergrid

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==The OpenSim Hypergrid==
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= What is the hypergrid? =
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<!-- [[image:VWV.jpg|250px|thumb|Web of Virtual Worlds]] -->
  
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=== What is the hypergrid? ===
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The hypergrid is an extension to opensim that allows you to link your opensim to other opensims on the internet, and that supports seamless agent transfers among those opensims. It can be used both in standalone mode and in grid mode. The hypergrid is effectively supporting the emergence of a Web of virtual worlds.  
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[[image:VWV.jpg|250px|thumb|Web of Virtual Worlds]]
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The hypergrid is an extension to opensim that allows you to link your regions other opensims on the internet, and that supports seamless agent transfers among those opensims. It can be used both in standalone mode and in grid mode. The hypergrid is effectively supporting the emergence of a Web of virtual worlds.  
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The basic idea for the hypergrid is that region/grid administrations can place hyperlinks on their map to hypergrided regions run by others. Once those hyperlinks are established, users interact with those regions in exactly the same way as they interact with local regions. Specifically, users can choose to teleport there. Once the user reaches the region behind the hyperlink, she is automatically interacting with a different virtual world without having to logout from the world where she came from, and while still having access to her inventory.
 
The basic idea for the hypergrid is that region/grid administrations can place hyperlinks on their map to hypergrided regions run by others. Once those hyperlinks are established, users interact with those regions in exactly the same way as they interact with local regions. Specifically, users can choose to teleport there. Once the user reaches the region behind the hyperlink, she is automatically interacting with a different virtual world without having to logout from the world where she came from, and while still having access to her inventory.
  
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The hypergrid is currently a [http://forge.opensimulator.org/gf/project/hypergrid/ GForge project]. Technically, it's implemented as a thin layer on top of the OpenSim core facilities. It's very easy to install, and it is 100% compatible with the standard OpenSim distribution.
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The hypergrid started as a external project, but it is now included in the standard distribution of OpenSimulator. '''To run your OpenSimulator instance in hypergrid mode, please see [[Installing and Running Hypergrid]].'''
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= Hypergrid Versions =
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* [[Hypergrid 2.0]] - current Hypergrid with greater security controls for region operators
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* [[Hypergrid 1.5]] - past Hypergrid version with greater asset security and expanded services
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* [[Hypergrid 1.0]] - the original Hypergrid described below
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= Teleporting via the Hypergrid =
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The structure of a hypergrid link is similar to a web page link : [hop://]<hg-host>:<hg-port>[/<region-name>][/x/y].  Examples:
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"hop://cc.opensimulator.org:8002/keynote 1"
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"hop://grid.mydomain.com:9000"
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The first example is the Hypergrid address of a region named "keynote 1" on the grid at cc.opensimulator.org that has port 8002.
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The second example gives only the hg-host and port.  In this case, the destination region is the default region setup for that grid, as specified in the [GridService] section of bin/Robust.HG.ini (for grid) or bin/config-include/StandaloneCommon.ini (for standalones).
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= Installing and Running =
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Please see [[Installing and Running Hypergrid]].
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= Hypergrid Concepts =
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* [[Hypergrid Concepts]].
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* [[Hypergrid Glossary]].
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= Hypergrid Development =
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See [[Hypergrid Protocol]] for protocol level details.
  
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=== Virtual World Hyperlinks ===
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See [[Hypergrid Implementation]] for implementation details.
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[[image:hghyperlink.jpg|250px|thumb|A Virtual World Hyperlink]]
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We're all familiar with hypertext links on the Web. But with is a virtual world hyperlink?
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= Hypergrid Parameters =
  
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In the hypergrid model, we consider the 2D map of the virtual world as the equivalent of a web page. As such, a VW hyperlink is simply a region on that map.  
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For information about each Hypergrid configuration parameter and what it does, please see [[Hypergrid Parameters]] (eventually).
  
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The current walled-garden model of opensim-based virtual worlds already supports this concept of hyperlink. When you teleport from one region to another via the map, chances are you are migrating your agent into a different opensim server. This migration is a glorified "agent transfer" that also exists, in rudimentary form, on the web when hypertext links are followed. The walled-garden model, however, imposes one very strong restriction on these hyperlinks: the entire map of regions is controlled by a central server known as the grid server, whose job is to provide a uniform view of the world to all of its regions.
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= Hypergrid Security =
  
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The hypergrid removes this constraint by allowing individual opensim instances to add "neighbors" to their local map. As such, the hypergrid moves the control of the map down from the grid server to individual opensim instances (although hyperlinks can also be served by grid servers if grid admins so wish). In doing so, the world becomes a lot more interesting and varied. The map that you see in one opensim instance may be completely different from the map that you see after you teleport via an hyperlink. As an opensim administrator, you are free to define what other opensims you want to see on your map.
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Please see [[Hypergrid Security]].
  
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=== Usage Scenarios ===
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= Hypergrid Friends =
  
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The following are three natural usage scenarios.
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* [[Hypergrid Friends]] (updated 2015)
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* [[Hypergrid_Friends_and_IM]] (updated 2011)
  
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{| {{Prettytable}}
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= Public Hypergrid Nodes =
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[[image:topoA.jpg|400px|left]]
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==== Personal Worlds ====
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This first scenario pertains to standalone opensims. Normally, standalones are completely disconnected from the internet. However, when run in hypergrid mode, standalones become network-able. As such, you can run your own world in your own computer, and link your world to whoever you want. For example, you can link to your friends' hypergrided opensims and to hypergrid gateways in open grids such as OSGrid.  
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Please see [[Public Hypergrid Nodes]].
  
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The great thing about this scenario is that all of your assets are stored on your computer, and not on somebody else's server. You can back them up using ordinary backend tools. The not so great thing about this scenario is that all of your assets are stored on your computer! If your disk goes berserk, you loose them. (so make sure you make external backups regularly)
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= Hypergrid Lists =
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Please see [[Hypergrid Lists]].
  
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= Further References =
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* [http://www.ics.uci.edu/~lopes/opensim/HypergridReferenceGuide.html The Hypergrid Reference Guide]
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[[image:topoB.jpg|400px|left]]
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* [https://web.archive.org/web/20150426153421/https://dl.dropboxusercontent.com/u/18483217/hypergrid-draft.pdf Hypergrid: Architecture and Protocol for Virtual World Interoperability] - Cristina Videira Lopes paper defining Hypergrid protocol (PDF format)
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==== Communities ====
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This second scenario is about communities, broadly construed. The idea here is that a group of people come together to support a small community grid, i.e. a common world where shared activities take place. But at the same time, the members of the community maintain their own standalone worlds. The standalones link to the community grid, and the community grid may link back to the individual members' worlds and other places of interest.
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= Development Meetings =
  
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The members' identities are probably the identities they have on their standalones, and their assets are also probably stored there. The assets present in the community regions, however, are stored on the grid asset server.
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[[Hypergrid Meetings]]
  
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[[Category:Hypergrid]]
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[[image:topoC.jpg|400px|left]]
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==== Grid Gateways ====
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sdlfj
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= See Also =
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Also see [[Grider]]; [[Virtual World Model]]; [[HyperGrid Team]]
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Latest revision as of 12:53, 24 December 2021

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Contents

[edit] What is the hypergrid?

The hypergrid is an extension to opensim that allows you to link your opensim to other opensims on the internet, and that supports seamless agent transfers among those opensims. It can be used both in standalone mode and in grid mode. The hypergrid is effectively supporting the emergence of a Web of virtual worlds.

The basic idea for the hypergrid is that region/grid administrations can place hyperlinks on their map to hypergrided regions run by others. Once those hyperlinks are established, users interact with those regions in exactly the same way as they interact with local regions. Specifically, users can choose to teleport there. Once the user reaches the region behind the hyperlink, she is automatically interacting with a different virtual world without having to logout from the world where she came from, and while still having access to her inventory.

The hypergrid started as a external project, but it is now included in the standard distribution of OpenSimulator. To run your OpenSimulator instance in hypergrid mode, please see Installing and Running Hypergrid.


[edit] Hypergrid Versions

  • Hypergrid 2.0 - current Hypergrid with greater security controls for region operators
  • Hypergrid 1.5 - past Hypergrid version with greater asset security and expanded services
  • Hypergrid 1.0 - the original Hypergrid described below


[edit] Teleporting via the Hypergrid

The structure of a hypergrid link is similar to a web page link : [hop://]<hg-host>:<hg-port>[/<region-name>][/x/y]. Examples: 

"hop://cc.opensimulator.org:8002/keynote 1"
"hop://grid.mydomain.com:9000"

The first example is the Hypergrid address of a region named "keynote 1" on the grid at cc.opensimulator.org that has port 8002.

The second example gives only the hg-host and port. In this case, the destination region is the default region setup for that grid, as specified in the [GridService] section of bin/Robust.HG.ini (for grid) or bin/config-include/StandaloneCommon.ini (for standalones).

[edit] Installing and Running

Please see Installing and Running Hypergrid.

[edit] Hypergrid Concepts

[edit] Hypergrid Development

See Hypergrid Protocol for protocol level details.

See Hypergrid Implementation for implementation details.

[edit] Hypergrid Parameters

For information about each Hypergrid configuration parameter and what it does, please see Hypergrid Parameters (eventually).

[edit] Hypergrid Security

Please see Hypergrid Security.

[edit] Hypergrid Friends

[edit] Public Hypergrid Nodes

Please see Public Hypergrid Nodes.

[edit] Hypergrid Lists

Please see Hypergrid Lists.

[edit] Further References

[edit] Development Meetings

Hypergrid Meetings

[edit] See Also

Also see Grider; Virtual World Model; HyperGrid Team

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