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* all: on-chain oracle checkpoint syncing (#19543)gary rong2019-06-281-7/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * all: implement simple checkpoint syncing cmd, les, node: remove callback mechanism cmd, node: remove callback definition les: simplify the registrar les: expose checkpoint rpc services in the light client les, light: don't store untrusted receipt cmd, contracts, les: discard stale checkpoint cmd, contracts/registrar: loose restriction of registeration cmd, contracts: add replay-protection all: off-chain multi-signature contract params: deploy checkpoint contract for rinkeby cmd/registrar: add raw signing mode for registrar cmd/registrar, contracts/registrar, les: fixed messages * cmd/registrar, contracts/registrar: fix lints * accounts/abi/bind, les: address comments * cmd, contracts, les, light, params: minor checkpoint sync cleanups * cmd, eth, les, light: move checkpoint config to config file * cmd, eth, les, params: address comments * eth, les, params: address comments * cmd: polish up the checkpoint admin CLI * cmd, contracts, params: deploy new version contract * cmd/checkpoint-admin: add another flag for clef mode signing * cmd, contracts, les: rename and regen checkpoint oracle with abigen
* les, light: implement ODR transaction lookup by hash (#19069)Felföldi Zsolt2019-05-131-0/+17
| | | | | | | | | | | | * les, light: implement ODR transaction lookup by hash * les: delete useless file * internal/ethapi: always use backend to find transaction * les, eth, internal/ethapi: renamed GetCanonicalTransaction to GetTransaction * light: add canonical header verification to GetTransaction
* les, les/flowcontrol: improved request serving and flow control (#18230)Felföldi Zsolt2019-02-261-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | This change - implements concurrent LES request serving even for a single peer. - replaces the request cost estimation method with a cost table based on benchmarks which gives much more consistent results. Until now the allowed number of light peers was just a guess which probably contributed a lot to the fluctuating quality of available service. Everything related to request cost is implemented in a single object, the 'cost tracker'. It uses a fixed cost table with a global 'correction factor'. Benchmark code is included and can be run at any time to adapt costs to low-level implementation changes. - reimplements flowcontrol.ClientManager in a cleaner and more efficient way, with added capabilities: There is now control over bandwidth, which allows using the flow control parameters for client prioritization. Target utilization over 100 percent is now supported to model concurrent request processing. Total serving bandwidth is reduced during block processing to prevent database contention. - implements an RPC API for the LES servers allowing server operators to assign priority bandwidth to certain clients and change prioritized status even while the client is connected. The new API is meant for cases where server operators charge for LES using an off-protocol mechanism. - adds a unit test for the new client manager. - adds an end-to-end test using the network simulator that tests bandwidth control functions through the new API.
* les, light, params: update light client CHTsPéter Szilágyi2018-09-201-8/+8
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* all: make indexer configurable (#17188)gary rong2018-08-281-1/+4
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* light: CHT and bloom trie indexers working in light mode (#16534)Felföldi Zsolt2018-08-161-0/+4
| | | | | | | This PR enables the indexers to work in light client mode by downloading a part of these tries (the Merkle proofs of the last values of the last known section) in order to be able to add new values and recalculate subsequent hashes. It also adds CHT data to NodeInfo.
* core/rawdb: separate raw database access to own package (#16666)Péter Szilágyi2018-05-071-8/+9
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* les, light: LES/2 protocol version (#14970)Felföldi Zsolt2017-10-241-18/+30
| | | | | | | | | | | | | | | | | | This PR implements the new LES protocol version extensions: * new and more efficient Merkle proofs reply format (when replying to a multiple Merkle proofs request, we just send a single set of trie nodes containing all necessary nodes) * BBT (BloomBitsTrie) works similarly to the existing CHT and contains the bloombits search data to speed up log searches * GetTxStatusMsg returns the inclusion position or the pending/queued/unknown state of a transaction referenced by hash * an optional signature of new block data (number/hash/td) can be included in AnnounceMsg to provide an option for "very light clients" (mobile/embedded devices) to skip expensive Ethash check and accept multiple signatures of somewhat trusted servers (still a lot better than trusting a single server completely and retrieving everything through RPC). The new client mode is not implemented in this PR, just the protocol extension.
* core/state: access trie through Database interface, track errors (#14589)Felix Lange2017-06-271-4/+4
| | | | | | | | | With this commit, core/state's access to the underlying key/value database is mediated through an interface. Database errors are tracked in StateDB and returned by CommitTo or the new Error method. Motivation for this change: We can remove the light client's duplicated copy of core/state. The light client now supports node iteration, so tracing and storage enumeration can work with the light client (not implemented in this commit).
* all: import "context" instead of "golang.org/x/net/context"Felix Lange2017-03-231-1/+1
| | | | | | | | | | There is no need to depend on the old context package now that the minimum Go version is 1.7. The move to "context" eliminates our weird vendoring setup. Some vendored code still uses golang.org/x/net/context and it is now vendored in the normal way. This change triggered new vet checks around context.WithTimeout which didn't fire with golang.org/x/net/context.
* les, light: add block availability check for ODR requestsZsolt Felfoldi2016-12-101-6/+9
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* light: light chain, VM env and tx poolZsolt Felfoldi2016-11-091-30/+88
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* all: Rename crypto.Sha3{,Hash}() to crypto.Keccak256{,Hash}()Ricardo Catalinas Jiménez2016-02-221-2/+2
| | | | As we aren't really using the standarized SHA-3
* light: implemented odr-capable trie and state structureszsfelfoldi2015-12-171-0/+98