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A DHT-based relay and post store for ActivityPub hashtags
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Trolli Schmittlauch b23201a49c Make key lookups fail after request exhaustion instead of providing default 
Returning the own node as a default does not make sense in all contexts:
Especially for bootstrap joining this can be harmful, so signalling
instead that the lookup failed makes distinguishing on a case by case
basis possible.

Also contributes to #57
2020-08-25 12:51:33 +02:00
app successful post publishing with MonadState and random relay selection 2020-08-21 12:31:50 +02:00
src Make key lookups fail after request exhaustion instead of providing default 2020-08-25 12:51:33 +02:00
test fix tests 2020-08-17 13:39:22 +02:00
.gitignore remove unnecessary directory level 2020-05-19 00:01:32 +02:00
.hlint.yaml adjust hlint hints to ignore lambda-case 2020-05-29 21:30:18 +02:00
cabal.project.renameinfuture disable online package fetching, only starts to work with cabal 3.4 and needs to be renamed then 2020-07-14 13:40:13 +02:00
CHANGELOG.md remove unnecessary directory level 2020-05-19 00:01:32 +02:00
default.nix bump nixpkgs revision 2020-08-20 15:58:35 +02:00
democlient.hs remove unnecessary directory level 2020-05-19 00:01:32 +02:00
demoserver.hs remove unnecessary directory level 2020-05-19 00:01:32 +02:00
FediChord.asn1 indicate in LeaveRequest whether to expect a migration 2020-08-17 12:36:02 +02:00
Hash2Pub.cabal start working on the experiment runner #59 2020-08-19 15:49:39 +02:00
hashtest.hs remove unnecessary directory level 2020-05-19 00:01:32 +02:00
LICENSE remove unnecessary directory level 2020-05-19 00:01:32 +02:00
Readme.md add readme 2020-05-19 00:01:32 +02:00
Setup.hs remove unnecessary directory level 2020-05-19 00:01:32 +02:00
shell-minimal.nix add nix shell environment without HIE for smaller foot print 2020-08-13 13:08:38 +02:00
shell.nix enable HIE only in the shell environment, but not by default 2020-07-26 16:38:56 +02:00
stylish.sh Linting integration 2020-05-19 12:42:06 +02:00

Readme.md

Hash2Pub

This is heavily WIP and does not provide any useful functionality yet.
I aim for always having the master branch at a state where it builds and tests pass.

A fully-decentralised relay for global hashtag federation in ActivityPub based on a distributed hash table. It allows querying and subscribing to all posts of a certain hashtag and is implemented in Haskell.

This is the practical implementation of the concept presented in the paper Decentralised Hashtag Search and Subscription for Federated Social Networks. A 30 minutes introduction talk is available as well.

The ASN.1 module schema used for DHT messages can be found in FediChord.asn1.

Building

The project and its developent environment are built with Nix.

The development environment can be entered with nix-shell. Then the project can be built with cabal build from within the environment, or using nix-shell --command "cabal build" to do both steps at once.