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* cmd/bootnode: fix -writeaddress output (#17932)Felix Lange2018-10-191-2/+2
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* p2p, p2p/discover: add signed ENR generation (#17753)Felix Lange2018-10-121-5/+6
| | | | | | | | | | | | | | | This PR adds enode.LocalNode and integrates it into the p2p subsystem. This new object is the keeper of the local node record. For now, a new version of the record is produced every time the client restarts. We'll make it smarter to avoid that in the future. There are a couple of other changes in this commit: discovery now waits for all of its goroutines at shutdown and the p2p server now closes the node database after discovery has shut down. This fixes a leveldb crash in tests. p2p server startup is faster because it doesn't need to wait for the external IP query anymore.
* all: new p2p node representation (#17643)Felix Lange2018-09-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Package p2p/enode provides a generalized representation of p2p nodes which can contain arbitrary information in key/value pairs. It is also the new home for the node database. The "v4" identity scheme is also moved here from p2p/enr to remove the dependency on Ethereum crypto from that package. Record signature handling is changed significantly. The identity scheme registry is removed and acceptable schemes must be passed to any method that needs identity. This means records must now be validated explicitly after decoding. The enode API is designed to make signature handling easy and safe: most APIs around the codebase work with enode.Node, which is a wrapper around a valid record. Going from enr.Record to enode.Node requires a valid signature. * p2p/discover: port to p2p/enode This ports the discovery code to the new node representation in p2p/enode. The wire protocol is unchanged, this can be considered a refactoring change. The Kademlia table can now deal with nodes using an arbitrary identity scheme. This requires a few incompatible API changes: - Table.Lookup is not available anymore. It used to take a public key as argument because v4 protocol requires one. Its replacement is LookupRandom. - Table.Resolve takes *enode.Node instead of NodeID. This is also for v4 protocol compatibility because nodes cannot be looked up by ID alone. - Types Node and NodeID are gone. Further commits in the series will be fixes all over the the codebase to deal with those removals. * p2p: port to p2p/enode and discovery changes This adapts package p2p to the changes in p2p/discover. All uses of discover.Node and discover.NodeID are replaced by their equivalents from p2p/enode. New API is added to retrieve the enode.Node instance of a peer. The behavior of Server.Self with discovery disabled is improved. It now tries much harder to report a working IP address, falling back to 127.0.0.1 if no suitable address can be determined through other means. These changes were needed for tests of other packages later in the series. * p2p/simulations, p2p/testing: port to p2p/enode No surprises here, mostly replacements of discover.Node, discover.NodeID with their new equivalents. The 'interesting' API changes are: - testing.ProtocolSession tracks complete nodes, not just their IDs. - adapters.NodeConfig has a new method to create a complete node. These changes were needed to make swarm tests work. Note that the NodeID change makes the code incompatible with old simulation snapshots. * whisper/whisperv5, whisper/whisperv6: port to p2p/enode This port was easy because whisper uses []byte for node IDs and URL strings in the API. * eth: port to p2p/enode Again, easy to port because eth uses strings for node IDs and doesn't care about node information in any way. * les: port to p2p/enode Apart from replacing discover.NodeID with enode.ID, most changes are in the server pool code. It now deals with complete nodes instead of (Pubkey, IP, Port) triples. The database format is unchanged for now, but we should probably change it to use the node database later. * node: port to p2p/enode This change simply replaces discover.Node and discover.NodeID with their new equivalents. * swarm/network: port to p2p/enode Swarm has its own node address representation, BzzAddr, containing both an overlay address (the hash of a secp256k1 public key) and an underlay address (enode:// URL). There are no changes to the BzzAddr format in this commit, but certain operations such as creating a BzzAddr from a node ID are now impossible because node IDs aren't public keys anymore. Most swarm-related changes in the series remove uses of NewAddrFromNodeID, replacing it with NewAddr which takes a complete node as argument. ToOverlayAddr is removed because we can just use the node ID directly.
* p2p, p2p/discover: misc connectivity improvements (#16069)Felix Lange2018-02-121-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * p2p: add DialRatio for configuration of inbound vs. dialed connections * p2p: add connection flags to PeerInfo * p2p/netutil: add SameNet, DistinctNetSet * p2p/discover: improve revalidation and seeding This changes node revalidation to be periodic instead of on-demand. This should prevent issues where dead nodes get stuck in closer buckets because no other node will ever come along to replace them. Every 5 seconds (on average), the last node in a random bucket is checked and moved to the front of the bucket if it is still responding. If revalidation fails, the last node is replaced by an entry of the 'replacement list' containing recently-seen nodes. Most close buckets are removed because it's very unlikely we'll ever encounter a node that would fall into any of those buckets. Table seeding is also improved: we now require a few minutes of table membership before considering a node as a potential seed node. This should make it less likely to store short-lived nodes as potential seeds. * p2p/discover: fix nits in UDP transport We would skip sending neighbors replies if there were fewer than maxNeighbors results and CheckRelayIP returned an error for the last one. While here, also resolve a TODO about pong reply tokens.
* p2p, p2p/discover, p2p/discv5: implement UDP port sharing (#15200)Felföldi Zsolt2018-01-221-2/+23
| | | | | | | | | | | | | | | This commit affects p2p/discv5 "topic discovery" by running it on the same UDP port where the old discovery works. This is realized by giving an "unhandled" packet channel to the old v4 discovery packet handler where all invalid packets are sent. These packets are then processed by v5. v5 packets are always invalid when interpreted by v4 and vice versa. This is ensured by adding one to the first byte of the packet hash in v5 packets. DiscoveryV5Bootnodes is also changed to point to new bootnodes that are implementing the changed packet format with modified hash. Existing and new v5 bootnodes are both running on different ports ATM.
* cmd/bootnode: stop after generating/writing nodekeyBas van Kervel2017-04-241-0/+1
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* all: disable log message colors outside of gethFelix Lange2017-02-271-1/+1
| | | | Also tweak behaviour so colors are only enabled when stderr is a terminal.
* cmd, whisper/mailserver: revert to utils.FatalfPéter Szilágyi2017-02-231-10/+11
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* accounts, cmd: port packages over to the new logging systemPéter Szilágyi2017-02-231-10/+10
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* all: blidly swap out glog to our log15, logs need reworkPéter Szilágyi2017-02-231-15/+18
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* cmd/bootnode, cmd/geth, cmd/bzzd: add --netrestrictFelix Lange2016-11-231-2/+12
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* p2p/discv5: added new topic discovery packageZsolt Felfoldi2016-11-091-2/+11
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* cmd/bootnode: Add support for outputting a node's ID on the command lineNick Johnson2016-07-151-12/+16
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* cmd/bootnode: fix -genkey, add logging optionsFelix Lange2016-04-221-28/+18
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* all: fix go vet warningsFelix Lange2016-04-151-1/+1
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* all: update license headers to distiguish GPL/LGPLFelix Lange2015-07-231-2/+2
| | | | | All code outside of cmd/ is licensed as LGPL. The headers now reflect this by calling the whole work "the go-ethereum library".
* all: add some godoc synopsis commentsFelix Lange2015-07-071-1/+1
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* all: update license informationFelix Lange2015-07-071-16/+15
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* cmd/bootnode, eth, p2p, p2p/discover: use a fancier db designPéter Szilágyi2015-04-241-1/+1
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* cmd/bootnode, eth, p2p, p2p/discover: clean up the seeder and mesh into eth.Péter Szilágyi2015-04-241-1/+1
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* cmd, eth, p2p, p2p/discover: init and clean up the seed cachePéter Szilágyi2015-04-241-1/+1
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* p2p/discover: map listening port using configured mechanismFelix Lange2015-02-131-3/+10
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* cmd/bootnode: new command (replaces cmd/peerserver)Felix Lange2015-02-101-0/+86