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Anton Kaliaev 41c11ad2c1 evidence: handling evidence from light client(s) (#4532 )

Closes: #4530

This PR contains logic for both submitting an evidence by the light client (lite2 package) and receiving it on the Tendermint side (/broadcast_evidence RPC and/or EvidenceReactor#Receive). Upon receiving the ConflictingHeadersEvidence (introduced by this PR), the Tendermint validates it, then breaks it down into smaller pieces (DuplicateVoteEvidence, LunaticValidatorEvidence, PhantomValidatorEvidence, PotentialAmnesiaEvidence). Afterwards, each piece of evidence is verified against the state of the full node and added to the pool, from which it's reaped upon block creation.

* rpc/client: do not pass height param if height ptr is nil

* rpc/core: validate incoming evidence!

* only accept ConflictingHeadersEvidence if one

of the headers is committed from this full node's perspective

This simplifies the code. Plus, if there are multiple forks, we'll
likely to receive multiple ConflictingHeadersEvidence anyway.

* swap CommitSig with Vote in LunaticValidatorEvidence

Vote is needed to validate signature

* no need to embed client

http is a provider and should not be used as a client

2020-04-22 11:29:05 +04:00

types

lite2/rpc: verify block results and validators (#4703 )

2020-04-20 16:38:34 +04:00

abci.go

rpc: PR#4320 follow up (#4323 )

2020-01-20 14:41:26 +04:00

blocks_test.go

add support for block pruning via ABCI Commit response (#4588 )

2020-04-03 08:38:32 +00:00

blocks.go

evidence: handling evidence from light client(s) (#4532 )

2020-04-22 11:29:05 +04:00

consensus.go

lite2/rpc: verify block results and validators (#4703 )

2020-04-20 16:38:34 +04:00

CONTRIBUTING.md

rpc: remove godoc comments in favor of swagger docs (#4126 )

2019-11-11 17:33:02 +04:00

dev.go

limit number of /subscribe clients and queries per client (#3269 )

2019-03-11 22:45:58 +04:00

doc_template.txt

Revert "delete everything" (includes everything non-go-crypto)

2018-06-20 17:35:30 -07:00

doc.go

Fix linter errors thrown by lll (#3970 )

2019-10-17 10:42:28 +02:00

events.go

rpc: create buffered subscriptions on /subscribe (#4521 )

2020-03-06 17:23:44 +04:00

evidence.go

evidence: handling evidence from light client(s) (#4532 )

2020-04-22 11:29:05 +04:00

health.go

rpc: PR#4320 follow up (#4323 )

2020-01-20 14:41:26 +04:00

mempool.go

rpc: add codespace to ResultBroadcastTx (#4611 )

2020-03-31 11:49:28 +04:00

net_test.go

p2p: make persistent prop independent of conn direction (#3593 )

2019-05-03 17:21:56 +04:00

net.go

rpc: PR#4320 follow up (#4323 )

2020-01-20 14:41:26 +04:00

pipe_test.go

rpc: return err if page is incorrect (less than 0 or greater than tot… (#3825 )

2019-07-23 12:25:59 +04:00

pipe.go

format: add format cmd & goimport repo (#4586 )

2020-03-23 09:19:26 +01:00

README.md

rpc: create buffered subscriptions on /subscribe (#4521 )

2020-03-06 17:23:44 +04:00

routes.go

Fix some golangci-lint warnings (#4448 )

2020-02-20 13:43:40 +01:00

status.go

add support for block pruning via ABCI Commit response (#4588 )

2020-04-03 08:38:32 +00:00

tx.go

rpc: stop txSearch result processing if context is done (#4418 )

2020-02-28 11:38:28 +01:00

README.md

Tendermint RPC

Pagination

Requests that return multiple items will be paginated to 30 items by default. You can specify further pages with the ?page parameter. You can also set a custom page size up to 100 with the ?per_page parameter.

Subscribing to events

The user can subscribe to events emitted by Tendermint, using /subscribe. If the maximum number of clients is reached or the client has too many subscriptions, an error will be returned. The subscription timeout is 5 sec. Each subscription has a buffer to accommodate short bursts of events or some slowness in clients. If the buffer gets full, the subscription will be canceled ("client is not pulling messages fast enough"). If Tendermint exits, all subscriptions are canceled ("Tendermint exited"). The user can unsubscribe using either /unsubscribe or /unsubscribe_all.