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62 Commits

Author SHA1 Message Date
Andreas Fackler bbc27e8a66 Update terminology: "observers" and "validators" 2018-07-02 14:14:19 +02:00
Andreas Fackler 2db67df325 Rename is_full_node to is_peer. 2018-06-26 10:57:44 +02:00
Andreas Fackler 2a5f9f1bfe Allow observer nodes in all algorithms. 
This allows nodes to join the network without sending any messages
themselves. They can't give any input and just observe the outcome.

Closes #81
 2018-06-26 09:17:12 +02:00
Andreas Fackler 83f8d61402 Support serde by default. 
This removes the `serialization-serde` feature, since serde is already
used internally and therefore a dependency anyway.
 2018-06-20 10:21:52 +02:00
Andreas Fackler 66f396e01c Remove more NodeUid trait bounds. 
Use a `BTreeMap` instead of `HashMap` in `NetworkInfo`. The number of
nodes can't grow very large anyway.
 2018-06-18 16:37:07 +02:00
Andreas Fackler 3f707a8e12 Return proposer info from HoneyBadger. 
Also, consistently name generic arguments, and remove some unused trait
bounds.
 2018-06-18 16:19:54 +02:00
Vladimir Komendantskiy 82b4250f0d added the broadcast proposer ID in the common coin nonce 2018-06-14 13:36:48 +01:00
Vladimir Komendantskiy 994600bcf6 renamed a fn argument for readability 2018-06-14 12:43:18 +01:00
Vladimir Komendantskiy 5008d11ada Revert "the set of node indices of common coin shares is now computed only once" 
This reverts commit e9808efc61.
 2018-06-14 10:05:05 +01:00
Vladimir Komendantskiy e9808efc61 the set of node indices of common coin shares is now computed only once 2018-06-13 22:05:11 +01:00
Vladimir Komendantskiy d5794cb5fe extended the common coin nonce with a global UID and the top-level epoch 2018-06-13 15:18:27 +01:00
Vladimir Komendantskiy cf45a4e3cb common coin implementation 2018-06-13 15:15:41 +01:00
Andreas Fackler fc599232aa Add logging to simulation example. 2018-05-31 14:28:10 +02:00
Andreas Fackler f970272d3e Add bandwidth and CPU to the simulation. 2018-05-31 14:28:10 +02:00
Andreas Fackler 1fd7155e31 Remove unused CommonSubset error variants. 2018-05-31 09:37:00 +02:00
Andreas Fackler f700ae82d0 Remove unused code from CommonSubset. 2018-05-30 15:50:16 +02:00
Vladimir Komendantskiy d09f3e26b4 introduced common shared network information 2018-05-29 14:53:01 +01:00
Andreas Fackler 9a0622f3f2 Update Rust, re-enable rustfmt. 2018-05-21 11:26:42 +02:00
Peter van Nostrand 19b982284b Added error-chain error handling. 2018-05-20 07:51:33 -04:00
Andreas Fackler ca65a014d6 Use an unambiguous name for proposer ID. 2018-05-19 17:17:02 +02:00
Andreas Fackler b8a2463d1c Extend tests and fix CommonSubset. 
Verify termination and more outputs.

`CommonSubset` now instantiates `Agreement` with the correct ID.
 2018-05-19 15:56:49 +02:00
Vladimir Komendantskiy 962a618ffd ported Common Subset tests to TestNetwork 2018-05-18 22:04:09 +01:00
Vladimir Komendantskiy a0627b2550 review comments taken 2018-05-17 11:36:09 +01:00
Vladimir Komendantskiy c8c8e1bb1f added a latch for the decided value in Agreement to remember the output value 2018-05-17 10:43:56 +01:00
Vladimir Komendantskiy 0c386276b1 defined a DistAlgorithm instance of Agreement 2018-05-16 22:50:23 +01:00
Andreas Fackler 4164af1702 Generalize TestNetwork and test HoneyBadger. 2018-05-16 16:21:30 +02:00
Vladimir Komendantskiy 5f916c4d08 formatting and lint check 2018-05-15 22:25:41 +01:00
Vladimir Komendantskiy c8034da332 corrected the CommonSubset module and test to decide on a map of values insetead of a set 2018-05-15 18:18:05 +01:00
Vladimir Komendantskiy eadd233fe4 added the Common Subset test module 2018-05-15 15:44:47 +01:00
Andreas Fackler 5528fc2de8 Define a common DistAlgorithm trait. 
This will allow us to deduplicate network simulations in tests for the
different algorithms. More generally, it facilitates writing general
tools and applying them to all distributed algorithms.
 2018-05-15 15:48:43 +02:00
Andreas Fackler e2c66e9a0a Add optional serde support. 
If the feature "serialization-serde" is specified, protocol messages
implement serde's `Serialize` and `Deserialize` traits.

Close #18
 2018-05-14 18:32:59 +02:00
Andreas Fackler 71fa32c18f Remove interior mutability. 
The `RwLock` is not needed anymore, since the broadcast implementation
doesn't handle any threading internally.
 2018-05-14 09:35:34 +02:00
Andreas Fackler 38cdd596a2 Start implementing the top-level Honey Badger algorithm. 
This also contains a few fixes for the `common_subset` module:
* Rename `common_subset::Output` to `Message` to avoid confusing it
  with the value that the algorithm outputs as a result.
* Implement dispatch of messages to the right instance within
  `CommonSubset`, in a way that is transparent to the user.
 2018-05-12 16:09:07 +02:00
Andreas Fackler 36183b1e27 Simplify the message types. 2018-05-10 17:52:12 +02:00
Vladimir Komendantskiy fb50e38ead replaced the map of estimated values with only one optional value for the current epoch 2018-05-10 12:09:22 +01:00
Vladimir Komendantskiy cf33bac533 added the proposer ID to common_subset::handle_broadcast and mae it an interface fn 2018-05-10 11:01:25 +01:00
Vladimir Komendantskiy 259d5369b0 corrected the count of AUX messages 2018-05-10 10:07:22 +01:00
Vladimir Komendantskiy e0005a672b removed the separate field in Agreement and corrected computation of estimated values 2018-05-10 10:07:22 +01:00
Vladimir Komendantskiy 3e35cc665b added element_proposer_id to the Agreement input to the Common Subset algorithm 2018-05-10 10:07:22 +01:00
Vladimir Komendantskiy 394462c88b changed code according to review comments 2018-05-10 10:07:22 +01:00
Vladimir Komendantskiy 5215156ec5 defined the output from the Common Subset algorithm 2018-05-10 10:02:03 +01:00
Vladimir Komendantskiy d3b974f888 Binary Agreement implementation and its wiring into Common Subset 2018-05-10 10:02:03 +01:00
Andreas Fackler b98bbe9dcd Fix broadcast and example, enable more tests. 
This fixes several issues with the broadcast algorithm and enables the
previously ignored tests that now pass:
* Don't decide on a root hash based on anyone's `Echo` message.
* Work around the `merkle` crate's inability to produce the proof of the
  `i`-th leaf for a given index `i`.
* Ignore messages from unknown nodes.
* Avoid decoding multiple times.
* Document the full algorithm.
* Don't count multiple `Echo` or `Ready` messages coming from the same
  node.
* Fix index computation for a given proof.
* Move `BroadcastMessage` into `broadcast` to make the module more
  self-contained.

The example now only executes a single broadcast instance, expecting the
first node (the one with the lexicographically lowest address) to
propose a value. A shell script is added that runs for example nodes.

Use env_logger instead of simple_logger, so the log level can be controlled
with an environment variable. You can e.g. log all output from the broadcast
test and the crate itself in debug mode with:
RUST_LOG=hbbft=debug,broadcast=debug

Some debugging messages are more concise now and use hexadecimal
notation instead of printing arrays of decimal values.

An indentation error in the Travis script is also fixed.
 2018-05-08 17:04:38 +02:00
Vladimir Komendantskiy dda1570bfc Merge branch 'afck--examples' of github.com:poanetwork/hbbft 2018-05-06 22:49:41 +01:00
Andreas Fackler eec3102cbf Move node to examples, deduplicate code. 2018-05-05 17:54:29 +02:00
Andreas Fackler 7826987af1 added a Travis configuration file, fixed Clippy lints 2018-05-05 09:53:29 +02:00
Andreas Fackler 8bced81438 removed some unnecessary cloning 
This also adds a few TODOs to the broadcast implementation: Some of
these issues need a regression test. (Oh, and a fix!)
 2018-05-04 09:58:21 +02:00
Vladimir Komendantskiy cde3a879e5 modified Agreement::set_input to output a BVAL message 2018-05-03 10:13:41 +01:00
Andreas Fackler babbd2f36a fixed broadcast failure with malicious value proposal 2018-05-03 11:07:37 +03:00
Vladimir Komendantskiy 98e3cf76a3 implementation of the last clause in Figure 4 2018-05-02 15:47:30 +01:00