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cmd/devp2p, p2p: dial using node iterator, discovery crawler (#20132)

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* p2p/enode: add Iterator and associated utilities

* p2p/discover: add RandomNodes iterator

* p2p: dial using iterator

* cmd/devp2p: add discv4 crawler

* cmd/devp2p: WIP nodeset filter

* cmd/devp2p: fixup lesFilter

* core/forkid: add NewStaticFilter

* cmd/devp2p: make -eth-network filter actually work

* cmd/devp2p: improve crawl timestamp handling

* cmd/devp2p: fix typo

* p2p/enode: fix comment typos

* p2p/discover: fix comment typos

* p2p/discover: rename lookup.next to 'advance'

* p2p: lower discovery mixer timeout

* p2p/enode: implement dynamic FairMix timeouts

* cmd/devp2p: add ropsten support in -eth-network filter

* cmd/devp2p: tweak crawler log message
This commit is contained in:
Felix Lange
2019-10-29 16:08:57 +01:00
committed by Péter Szilágyi
parent b0b277525c
commit 2c37142d2f
19 changed files with 1559 additions and 414 deletions
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8
core/forkid/forkid.go
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@ -80,7 +80,7 @@ func newID(config *params.ChainConfig, genesis common.Hash, head uint64) ID {
return ID{Hash: checksumToBytes(hash), Next: next}
}
// NewFilter creates an filter that returns if a fork ID should be rejected or not
// NewFilter creates a filter that returns if a fork ID should be rejected or not
// based on the local chain's status.
func NewFilter(chain *core.BlockChain) func(id ID) error {
return newFilter(
@ -92,6 +92,12 @@ func NewFilter(chain *core.BlockChain) func(id ID) error {
)
}
// NewStaticFilter creates a filter at block zero.
func NewStaticFilter(config *params.ChainConfig, genesis common.Hash) func(id ID) error {
head := func() uint64 { return 0 }
return newFilter(config, genesis, head)
}
// newFilter is the internal version of NewFilter, taking closures as its arguments
// instead of a chain. The reason is to allow testing it without having to simulate
// an entire blockchain.