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les: implement ultralight client (#16904)

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For more information about this light client mode, read
https://hackmd.io/s/HJy7jjZpm
This commit is contained in:
b00ris
2019-01-24 14:18:26 +03:00
committed by Felix Lange
parent b8f9b3779f
commit 769657060e
23 changed files with 1288 additions and 179 deletions
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31
les/backend.go
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@ -109,8 +109,12 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
bloomIndexer: eth.NewBloomIndexer(chainDb, params.BloomBitsBlocksClient, params.HelperTrieConfirmations),
}
var trustedNodes []string
if leth.config.ULC != nil {
trustedNodes = leth.config.ULC.TrustedServers
}
leth.relay = NewLesTxRelay(peers, leth.reqDist)
leth.serverPool = newServerPool(chainDb, quitSync, &leth.wg)
leth.serverPool = newServerPool(chainDb, quitSync, &leth.wg, trustedNodes)
leth.retriever = newRetrieveManager(peers, leth.reqDist, leth.serverPool)
leth.odr = NewLesOdr(chainDb, light.DefaultClientIndexerConfig, leth.retriever)
@ -136,10 +140,33 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
}
leth.txPool = light.NewTxPool(leth.chainConfig, leth.blockchain, leth.relay)
if leth.protocolManager, err = NewProtocolManager(leth.chainConfig, light.DefaultClientIndexerConfig, true, config.NetworkId, leth.eventMux, leth.engine, leth.peers, leth.blockchain, nil, chainDb, leth.odr, leth.relay, leth.serverPool, quitSync, &leth.wg); err != nil {
if leth.protocolManager, err = NewProtocolManager(
leth.chainConfig,
light.DefaultClientIndexerConfig,
true,
config.NetworkId,
leth.eventMux,
leth.engine,
leth.peers,
leth.blockchain,
nil,
chainDb,
leth.odr,
leth.relay,
leth.serverPool,
quitSync,
&leth.wg,
config.ULC); err != nil {
return nil, err
}
if leth.protocolManager.isULCEnabled() {
log.Warn("Ultra light client is enabled", "trustedNodes", len(leth.protocolManager.ulc.trustedKeys), "minTrustedFraction", leth.protocolManager.ulc.minTrustedFraction)
leth.blockchain.DisableCheckFreq()
}
leth.ApiBackend = &LesApiBackend{leth, nil}
gpoParams := config.GPO
if gpoParams.Default == nil {
gpoParams.Default = config.MinerGasPrice