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220 Commits

Author SHA1 Message Date
Péter Szilágyi 4d5a719f25 cmd, eth, p2p: introduce pending peer cli arg, add tests 2015-05-07 15:30:56 +03:00
Péter Szilágyi af93217775 p2p: reduce the concurrent handshakes to 10/10 in/out 2015-05-07 15:22:09 +03:00
Péter Szilágyi 2060bc8bac p2p: fix dial throttling race condition 2015-05-07 15:22:08 +03:00
Péter Szilágyi 29fef349ef p2p: fix a dialing race in the throttler 2015-05-07 15:22:08 +03:00
Péter Szilágyi 3953bf0031 p2p: limit the outbound dialing too 2015-05-07 15:22:08 +03:00
Jeffrey Wilcke a0cb1945ae Merge pull request #866 from fjl/p2p-last-minute 
Last minute p2p fixes
 2015-05-06 14:49:52 -07:00
Felix Lange 3e2a928caa p2p: stop dialing at half the maximum peer count 2015-05-06 23:44:51 +02:00
Felix Lange 6a2fec5309 p2p, whisper: use glog for peer-level logging 2015-05-06 23:19:14 +02:00
Felix Lange bcfd788661 p2p/discover: bump packet timeouts to 500ms 2015-05-06 22:59:00 +02:00
Felix Lange fd4b75cfa8 p2p/nat: less confusing error logging 2015-05-06 22:58:03 +02:00
obscuren 062fa049d0 fixed merge issue 2015-05-06 22:54:21 +02:00
Felix Lange 2adcc31bb4 p2p/discover: new distance metric based on sha3(id) 
The previous metric was pubkey1^pubkey2, as specified in the Kademlia
paper. We missed that EC public keys are not uniformly distributed.
Using the hash of the public keys addresses that. It also makes it
a bit harder to generate node IDs that are close to a particular node.
 2015-05-06 16:10:41 +02:00
Péter Szilágyi 4accc187d5 eth, p2p: add trusted node list beside static list 2015-05-04 13:59:51 +03:00
Péter Szilágyi 54db54931e p2p: add static node dialing test 2015-05-04 13:08:42 +03:00
Péter Szilágyi e82ddd9198 p2p: correct a leftover trusted -> static 2015-04-30 19:34:33 +03:00
Péter Szilágyi 413ace37d3 eth, p2p: rename trusted nodes to static, drop inbound extra slots 2015-04-30 19:32:48 +03:00
Péter Szilágyi 701591b403 cmd, eth, p2p: fix review issues enumerated by Felix 2015-04-30 16:15:29 +03:00
Péter Szilágyi 1528dbc171 p2p: add trust check to handshake, test privileged connectivity 
Conflicts:
	p2p/server_test.go
 2015-04-30 16:06:47 +03:00
Péter Szilágyi 14f32a0c3a p2p: reduce the severity of a debug log 2015-04-30 16:04:09 +03:00
Péter Szilágyi de0549fabb cmd/geth, cmd/mist, cmd/utils, eth, p2p: support trusted peers 2015-04-30 16:03:10 +03:00
Felix Lange 72ab6d3255 p2p/discover: track sha3(ID) in Node 2015-04-30 15:02:23 +02:00
Felix Lange b34a8ef624 p2p, p2p/discover: protocol version 4 2015-04-30 14:57:34 +02:00
Felix Lange fc747ef4a6 p2p/discover: new endpoint format 
This commit changes the discovery protocol to use the new "v4" endpoint
format, which allows for separate UDP and TCP ports and makes it
possible to discover the UDP address after NAT.
 2015-04-30 14:57:33 +02:00
obscuren 01e3d694a6 p2p: added received at to peer message 
p2p.Msg.ReceivedAt can be used for determining block propagation from
begining to end.
 2015-04-29 22:49:58 +02:00
Péter Szilágyi b569550a39 p2p/discover: fix api issues caused by leveldb update 2015-04-28 13:57:57 +03:00
Péter Szilágyi 4992765032 p2p/discover: fix goroutine leak due to blocking on sync.Once 2015-04-28 10:28:04 +03:00
Péter Szilágyi 437cf4b3ac p2p/discover: add node expirer and related tests 2015-04-27 17:38:28 +03:00
Péter Szilágyi a136e2bb22 p2p/discover: parametrize nodedb version, add persistency tests 2015-04-27 15:28:17 +03:00
Péter Szilágyi 75fd738dea p2p/discover: drop a superfluous warning 2015-04-27 15:06:31 +03:00
Péter Szilágyi 706da56f75 p2p/discover: wrap the pinger to update the node db too 2015-04-27 14:56:42 +03:00
Péter Szilágyi 85b4b44235 p2p/discover: use iterator based seeding, drop old protocol test 2015-04-27 14:45:35 +03:00
Péter Szilágyi 8de8f61d36 p2p/discover: write the basic tests, catch RLP bug 2015-04-27 12:33:06 +03:00
Péter Szilágyi 0201c04b95 p2p/discovery: fix issues raised in the nodeDb PR 2015-04-27 10:19:16 +03:00
Péter Szilágyi 8646365b42 cmd/bootnode, eth, p2p, p2p/discover: use a fancier db design 2015-04-24 18:04:41 +03:00
Péter Szilágyi 6def110c37 cmd/bootnode, eth, p2p, p2p/discover: clean up the seeder and mesh into eth. 2015-04-24 11:33:55 +03:00
Péter Szilágyi 971702e7a1 p2p/discovery: fix broken tests due to API update 2015-04-24 11:23:20 +03:00
Péter Szilágyi af923c965f p2p/discovery: use the seed table for finding nodes, auto drop stale ones 2015-04-24 11:23:20 +03:00
Péter Szilágyi 5f735d6fce cmd, eth, p2p, p2p/discover: init and clean up the seed cache 2015-04-24 11:23:20 +03:00
Felix Lange 936c8e19ff p2p/discover: store nodes in leveldb 2015-04-24 11:23:20 +03:00
Felix Lange 635b66acdc p2p: return zero node from Self if the server is not running 
This helps with fixing the tests for cmd/geth to run without networking.
 2015-04-22 12:31:19 +02:00
Felix Lange 9c7281c17e p2p: make DiscReason bigger than byte 
We decode into [1]DiscReason in a few places. That doesn't work anymore
because package rlp no longer accepts RLP lists for byte arrays.
 2015-04-17 14:45:10 +02:00
Felix Lange eedbb1ee9a p2p/discover: use rlp.DecodeBytes 2015-04-17 14:45:09 +02:00
Felix Lange 56a48101dc cmd/rlpdump, cmd/utils, eth, p2p, whisper: use rlp input limit 2015-04-17 14:45:09 +02:00
Felix Lange 5528abc795 p2p: fix the dial timer 
The dial timer was not reset properly when the peer count reached
MaxPeers.
 2015-04-17 08:17:01 +02:00
obscuren 474aa924ca p2p: added limiter function to limit package broadcasting 2015-04-14 12:47:31 +02:00
Felix Lange 0217652d1b p2p/discover: improve timer handling for reply timeouts 2015-04-13 18:08:11 +02:00
Felix Lange b8aeb04f6f p2p/discover: remove unused field Node.activeStamp 2015-04-13 17:44:14 +02:00
Felix Lange b9929d289d p2p: fix unsynchronized map access during Server shutdown 
removePeer can be called even after listenLoop and dialLoop have returned.
 2015-04-13 17:37:32 +02:00
Felix Lange 995fab2ebc p2p: fix yet another disconnect hang 
Peer.readLoop will only terminate if the connection is closed. Fix the
hang by closing the connection before waiting for readLoop to terminate.

This also removes the british disconnect procedure where we're waiting
for the remote end to close the connection. I have confirmed with
@subtly that cpp-ethereum doesn't adhere to it either.
 2015-04-13 17:34:08 +02:00
Felix Lange 79a6782c1c p2p: fix goroutine leak when handshake read fails 
This regression was introduced in b3c058a9e4.
 2015-04-13 17:06:19 +02:00
Felix Lange c5332537f5 p2p: limit number of lingering inbound pre-handshake connections 
This is supposed to apply some back pressure so Server is not accepting
more connections than it can actually handle. The current limit is 50.
This doesn't really need to be configurable, but we'll see how it
behaves in our test nodes and adjust accordingly.
 2015-04-10 17:24:41 +02:00
Felix Lange 56977c225e p2p: use RLock instead of Lock for pre-dial checks 2015-04-10 17:23:09 +02:00
Felix Lange b3c058a9e4 p2p: improve disconnect signaling at handshake time 
As of this commit, p2p will disconnect nodes directly after the
encryption handshake if too many peer connections are active.
Errors in the protocol handshake packet are now handled more politely
by sending a disconnect packet before closing the connection.
 2015-04-10 16:57:56 +02:00
Felix Lange 99a1db2d40 p2p: don't mess with the socket deadline in Peer.readLoop 
netWrapper already sets a read deadline in ReadMsg.
 2015-04-10 13:26:28 +02:00
Felix Lange 145330fdf2 p2p: properly decrement peer wait group counter for setup errors 2015-04-10 13:26:27 +02:00
Felix Lange f1d710af00 p2p: fix Peer shutdown deadlocks 
There were multiple synchronization issues in the disconnect handling,
all caused by the odd special-casing of Peer.readLoop errors. Remove the
special handling of read errors and make readLoop part of the Peer
WaitGroup.

Thanks to @Gustav-Simonsson for pointing at arrows in a diagram
and playing rubber-duck.
 2015-04-10 13:26:27 +02:00
Felix Lange 22d1f0faf1 p2p: improve peer selection logic 
This commit introduces a new (temporary) peer selection
strategy based on random lookups.

While we're here, also implement the TODOs in dialLoop.
 2015-04-10 13:26:27 +02:00
Felix Lange 7be05b4b9d p2p/discover: don't log packet content 2015-04-10 13:26:27 +02:00
Felix Lange 9cd8c96157 p2p/discover: make packet processing less concurrent 2015-04-10 13:26:27 +02:00
obscuren 688d118c7e Updated logging 2015-04-07 14:57:04 +02:00
Felix Lange a77c431e37 p2p/discover: fix off by one error causing buckets to contain duplicates 2015-04-01 17:00:12 +02:00
Felix Lange de7af720d6 p2p/discover: implement node bonding 
This a fix for an attack vector where the discovery protocol could be
used to amplify traffic in a DDOS attack. A malicious actor would send a
findnode request with the IP address and UDP port of the target as the
source address. The recipient of the findnode packet would then send a
neighbors packet (which is 16x the size of findnode) to the victim.

Our solution is to require a 'bond' with the sender of findnode. If no
bond exists, the findnode packet is not processed. A bond between nodes
α and β is created when α replies to a ping from β.

This (initial) version of the bonding implementation might still be
vulnerable against replay attacks during the expiration time window.
We will add stricter source address validation later.
 2015-04-01 17:00:12 +02:00
Felix Lange 92928309b2 p2p/discover: add version number to ping packet 
The primary motivation for doing this right now is that old PoC 8
nodes and newer PoC 9 nodes keep discovering each other, causing
handshake failures.
 2015-04-01 15:53:04 +02:00
zelig 9880f99ccb fix p2p/testlog_test 2015-03-23 16:41:41 +00:00
obscuren a7ad9c309b Merge branch 'develop' into conversion 2015-03-21 14:52:42 +01:00
obscuren 4f5b362bda %#x => %x 2015-03-20 12:52:03 +01:00
Felix Lange b9e0b11e7d p2p: interrupt MsgPipe payload read/write 
This is better because protocols might not actually read the payload for
some errors (msg too big, etc.) which can be a pain to test with the old
behaviour.
 2015-03-19 15:16:06 +01:00
Felix Lange a7bced779a p2p: log disconnect requests 
This helps a lot with debugging.
 2015-03-19 15:15:07 +01:00
Felix Lange 5ba51594c7 p2p: use package rlp to encode messages 
Message encoding functions have been renamed to catch any uses.
The switch to the new encoder can cause subtle incompatibilities.
If there are any users outside of our tree, they will at least be
alerted that there was a change.

NewMsg no longer exists. The replacements for EncodeMsg are called
Send and SendItems.
 2015-03-19 15:11:02 +01:00
Felix Lange 4811f460e7 p2p: export ExpectMsg (for eth protocol testing) 2015-03-19 15:08:04 +01:00
zelig b3e133dd15 Merge branch 'frontier/js' into frontier/nodeadmin.js 2015-03-16 22:50:29 +07:00
obscuren b523441361 Moved ethutil => common 2015-03-16 11:27:38 +01:00
zelig e150832734 p2p: server>discover table Self=Node exported 2015-03-15 13:38:41 +07:00
Taylor Gerring 485e37e889 Move MakeName to ethutil 2015-03-11 14:29:07 -05:00
Felix Lange 215c763d53 eth, p2p: delete p2p.Blacklist 
It is unused and untested right now. We can
bring it back later if required.
 2015-03-04 16:54:36 +01:00
Felix Lange 429828cd92 p2p: reject messages that cannot be written as simple RLPx frames 
Until chunked frames are implemented we cannot send messages
with a size overflowing uint24.
 2015-03-04 16:42:01 +01:00
Felix Lange 22659a7fea p2p: restore read/write timeouts 
They got lost in the transition to rlpxFrameRW.
 2015-03-04 16:42:00 +01:00
Felix Lange 7964f30dcb p2p: msg.Payload contains list data 
With RLPx frames, the message code is contained in the
frame and is no longer part of the encoded data.

EncodeMsg, Msg.Decode have been updated to match.
Code that decodes RLP directly from Msg.Payload will need
to change.
 2015-03-04 12:27:24 +01:00
Felix Lange 21649100b1 p2p: verify protocol handshake node ID 2015-03-04 12:27:24 +01:00
Felix Lange 7d39fd6678 p2p: make encryption handshake code easier to follow 
This mostly changes how information is passed around.
Instead of using many function parameters and return values,
put the entire state in a struct and pass that.

This also adds back derivation of ecdhe-shared-secret. I deleted
it by accident in a previous refactoring.
 2015-03-04 12:27:24 +01:00
Felix Lange 2c505efd1e p2p/discover: add NodeID.Pubkey 2015-03-04 12:27:24 +01:00
Felix Lange d344054e5a p2p: make RLPx frame MAC 16 bytes as defined in the spec 2015-03-04 12:27:24 +01:00
Felix Lange d084aed5e9 p2p: delete frameRW 2015-03-04 12:27:24 +01:00
Felix Lange 736e632215 p2p: use RLPx frames for messaging 2015-03-04 12:27:23 +01:00
Felix Lange 51e01cceca p2p: encrypted and authenticated RLPx frame I/O 2015-03-04 12:27:23 +01:00
Felix Lange 936dd0f3bc p2p: add basic RLPx frame I/O 2015-03-04 12:27:23 +01:00
Felix Lange 3719db352a p2p: emit JSON connect/disconnect events 2015-02-19 17:09:33 +01:00
Felix Lange dd871e791c p2p: initialize Server.ourHandshake before accepting connections 2015-02-19 17:08:18 +01:00
Felix Lange 3dbd32093c p2p: enable devp2p ping 
This should prevent connection drops.
 2015-02-19 16:54:54 +01:00
Felix Lange 73f94f3755 p2p: disable encryption handshake 
The diff is a bit bigger than expected because the protocol handshake
logic has moved out of Peer. This is necessary because the protocol
handshake will have custom framing in the final protocol.
 2015-02-19 16:54:53 +01:00
Jeffrey Wilcke c1d0693cb1 Merge pull request #325 from fjl/deps-cleanup 
Cleanup imports
 2015-02-17 23:19:45 +01:00
Felix Lange 7ea131d4ff p2p/discover: fix pending replies iteration 
Range expressions capture the length of the slice once before the first
iteration. A range expression cannot be used here since the loop
modifies the slice variable (including length changes).
 2015-02-17 15:21:39 +01:00
Felix Lange f965f41b6e p2p/nat: switch to github.com/huin/goupnp 
My temporary fix was merged upstream.
 2015-02-17 13:10:11 +01:00
Felix Lange 34d0e1b2c3 p2p: fix ecies dependency in tests 
We forgot to update this reference when moving ecies into the
go-ethereum repo.
 2015-02-17 12:04:20 +01:00
obscuren 09e53367a2 Use a mutex write-lock for a write operation 2015-02-15 02:13:24 +01:00
obscuren 65159d65c8 Merge branch 'develop' of github.com-obscure:ethereum/go-ethereum into develop 2015-02-14 00:27:46 +01:00
obscuren 84f7c966f7 Moved ECIES to repo & added secondary title for webview 
* ECIES moved from obscuren to ethereum
* Added html META[name=badge] to reflect menuItem.secondaryTitle
 2015-02-14 00:25:47 +01:00
Felix Lange 4bef3ce284 p2p: print Cap as name/version 2015-02-13 23:54:34 +01:00
Felix Lange 32a9c0ca80 p2p: bump devp2p protcol version to 3 
For compatibility with cpp-ethereum
 2015-02-13 15:08:40 +01:00
Felix Lange fd3e1061e0 p2p: handle disconnect before protocol handshake 2015-02-13 15:06:47 +01:00