Commit Graph

295 Commits

Author SHA1 Message Date
Wladimir J. van der Laan
ab9bce2c3a Merge #9225: Fix some benign races
dfed983 Fix unlocked access to vNodes.size() (Matt Corallo)
3033522 Remove double brackets in addrman (Matt Corallo)
dbfaade Fix AddrMan locking (Matt Corallo)
047ea10 Make fImporting an std::atomic (Matt Corallo)
42071ca Make fDisconnect an std::atomic (Matt Corallo)
2018-01-17 17:27:24 +01:00
Pieter Wuille
5c0b55a7c0 Merge #9128: net: Decouple CConnman and message serialization
c7be56d net: push only raw data into CConnman (Cory Fields)
2ec935d net: add CVectorWriter and CNetMsgMaker (Cory Fields)
b7695c2 net: No need to check individually for disconnection anymore (Cory Fields)
fedea8a net: don't send any messages before handshake or after requested disconnect (Cory Fields)
d74e352 net: Set feelers to disconnect at the end of the version message (Cory Fields)
2018-01-17 17:27:22 +01:00
Alexander Block
532b9fa3db Use OpenNetworkConnection instead of calling ConnectNode directly in Dash code (#1857)
ConnectNode is meant to be private and should not be leaked outside of
CConnman. This leaking resulted in multiple problems with AddRef/Release
behaviour. We use OpenNetworkConnectio/OpenMasternodeConnection from now on
and use appropriate ForNode calls to access the CNode* instance.

This commit also changes the behaviour for already connected nodes which
are afterwards requested for a masternode connection. We don't set
fMasternode=true anymore on such nodes, which means it won't be auto
disconnected anymore from ProcessMasternodeConnections.
2018-01-17 18:09:08 +03:00
Wladimir J. van der Laan
0932079ea6 Merge #9131: fNetworkActive is not protected by a lock, use an atomic
079142b fNetworkActive is not protected by a lock, use an atomic (Jonas Schnelli)
2018-01-15 06:14:16 +01:00
Wladimir J. van der Laan
19a2d668cf Merge #9039: Various serialization simplifcations and optimizations
d59a518 Use fixed preallocation instead of costly GetSerializeSize (Pieter Wuille)
25a211a Add optimized CSizeComputer serializers (Pieter Wuille)
a2929a2 Make CSerAction's ForRead() constexpr (Pieter Wuille)
a603925 Avoid -Wshadow errors (Pieter Wuille)
5284721 Get rid of nType and nVersion (Pieter Wuille)
657e05a Make GetSerializeSize a wrapper on top of CSizeComputer (Pieter Wuille)
fad9b66 Make nType and nVersion private and sometimes const (Pieter Wuille)
c2c5d42 Make streams' read and write return void (Pieter Wuille)
50e8a9c Remove unused ReadVersion and WriteVersion (Pieter Wuille)
2018-01-15 06:14:15 +01:00
Pieter Wuille
9b8cc0b1ce Merge #9045: Hash P2P messages as they are received instead of at process-time
fe1dc62 Hash P2P messages as they are received instead of at process-time (Matt Corallo)
2018-01-15 06:14:12 +01:00
Wladimir J. van der Laan
dd7669bc7c Merge #9050: net: make a few values immutable, and use deterministic randomness for the localnonce
59ac5c5 net: Use deterministic randomness for CNode's nonce, and make it const (Cory Fields)
aff6584 net: constify a few CNode vars to indicate that they're threadsafe (Cory Fields)
2018-01-13 13:44:39 +01:00
Wladimir J. van der Laan
239ce534c2 Merge #8914: Kill insecure_random and associated global state
5eaaa83 Kill insecure_random and associated global state (Wladimir J. van der Laan)
2018-01-12 09:58:14 +01:00
Wladimir J. van der Laan
17e110f47e Merge #8785: Comment on CNode::nLocalServices meaning
b5ccded Comment on CConnman::nLocalServices meaning (instagibbs)
2018-01-11 13:22:22 +01:00
Wladimir J. van der Laan
b04e32c43d Merge #8688: Move static global randomizer seeds into CConnman
d9ff591 Move static global randomizer seeds into CConnman (Pieter Wuille)
2018-01-11 13:20:57 +01:00
Wladimir J. van der Laan
af5d18ad5c Merge #8707: net: fix maxuploadtarget setting
f3552da net: fix maxuploadtarget setting (Cory Fields)
2018-01-11 13:19:32 +01:00
Alexander Block
3aad9d9085 Fix logging in PushInventory (#1847)
Merge conflict resolution went wrong here. It showed filtered in case it
was pushed and nothing in case it was filtered.
2018-01-11 04:59:25 +03:00
Wladimir J. van der Laan
313cfb09da Merge #8466: [Trivial] Do not shadow variables in networking code
b7c349d Do not shadow variables in networking code (Pavel Janík)
2018-01-09 14:16:38 +01:00
Pieter Wuille
361d26037b Merge #8173: Use SipHash for node eviction (cont'd)
eebc232 test: Add more test vectors for siphash (Wladimir J. van der Laan)
8884830 Use C++11 thread-safe static initializers (Pieter Wuille)
c31b24f Use 64-bit SipHash of netgroups in eviction (Pieter Wuille)
9bf156b Support SipHash with arbitrary byte writes (Pieter Wuille)
053930f Avoid recalculating vchKeyedNetGroup in eviction logic. (Patrick Strateman)
2017-12-22 16:33:56 +01:00
Pieter Wuille
51fa05ac33 Merge #8082: Defer inserting into maprelay until just before relaying.
4d8993b Defer inserting into maprelay until just before relaying. (Gregory Maxwell)
2017-12-22 16:33:55 +01:00
Wladimir J. van der Laan
00c84ca53e Merge #8065: Addrman offline attempts
6182d10 Do not increment nAttempts by more than one for every Good connection. (Gregory Maxwell)
c769c4a Avoid counting failed connect attempts when probably offline. (Gregory Maxwell)
2017-12-22 16:33:55 +01:00
Wladimir J. van der Laan
dfa0bd2341 Merge #8080: Do not use mempool for GETDATA for tx accepted after the last mempool req.
7e908c7 Do not use mempool for GETDATA for tx accepted after the last mempool req. (Gregory Maxwell)
2017-12-22 16:33:03 +01:00
Wladimir J. van der Laan
bef036125f Merge #7877: Change mapRelay to store CTransactions
38c3102 Change mapRelay to store CTransactions (Pieter Wuille)
2017-12-22 16:33:03 +01:00
Pieter Wuille
7b25879463 Merge #8059: Remove unneeded feerate param from RelayTransaction/AcceptToMemoryPool.
d87b198 Remove unneeded feerate param from RelayTransaction/AcceptToMemoryPool. (Gregory Maxwell)
2017-12-21 18:50:13 +01:00
Alexander Block
d4b8abf4ff Send non-tx/non-block inventory items
Bitcoin #7840 has split the INVs to send into block and TX and completely
ignores non-tx/non-block items in PushInventory. This is fine for Bitcoin,
as they only use it for blocks and TXs, but we also have a lot of MN related
messages which also need to be relayed.
2017-12-21 17:30:51 +01:00
Wladimir J. van der Laan
5d8e94a26f Merge #7840: Several performance and privacy improvements to inv/mempool handling
b559914 Move bloom and feerate filtering to just prior to tx sending. (Gregory Maxwell)
4578215 Return mempool queries in dependency order (Pieter Wuille)
ed70683 Handle mempool requests in send loop, subject to trickle (Pieter Wuille)
dc13dcd Split up and optimize transaction and block inv queues (Pieter Wuille)
f2d3ba7 Eliminate TX trickle bypass, sort TX invs for privacy and priority. (Gregory Maxwell)
2017-12-21 17:30:51 +01:00
Wladimir J. van der Laan
24f8c248f5 Merge #7856: Only send one GetAddr response per connection.
66b0724 Only send one GetAddr response per connection. (Gregory Maxwell)
2017-12-20 17:25:02 +01:00
Wladimir J. van der Laan
11ac70af9e Merge #7542: Implement "feefilter" P2P message
0371797 modify release-notes.md and bips.md (Alex Morcos)
b536a6f Add p2p test for feefilter (Alex Morcos)
5fa66e4 Create SingleNodeConnCB class for RPC tests (Alex Morcos)
9e072a6 Implement "feefilter" P2P message. (Alex Morcos)
2017-12-19 13:18:30 +01:00
Ilya Savinov
6a6b31b74d Dip0001-related adjustments (inc. constants) (#1621)
* block size related constants adjusted; other minor fixes

* revert constants related to storing blocks on disk

* move AssertLockHeld to a separate PR
2017-09-14 14:42:37 +03:00
Alexander Block
91d99fcd3f Backport Bitcoin Qt/Gui changes up to 0.14.x part 3 (#1617)
* Merge #8996: Network activity toggle

19f46f1 Qt: New network_disabled icon (Luke Dashjr)
54cf997 RPC/Net: Use boolean consistently for networkactive, and remove from getinfo (Luke Dashjr)
b2b33d9 Overhaul network activity toggle (Jonas Schnelli)
32efa79 Qt: Add GUI feedback and control of network activity state. (Jon Lund Steffensen)
e38993b RPC: Add "togglenetwork" method to toggle network activity temporarily (Jon Lund Steffensen)
7c9a98a Allow network activity to be temporarily suspended. (Jon Lund Steffensen)

* Revert on-click behavior of network status icon to showing peers list

Stay with the way Dash handled clicking on the status icon

* Add theme support for network disabled icon

* Merge #8874: Multiple Selection for peer and ban tables

1077577 Fix auto-deselection of peers (Andrew Chow)
addfdeb Multiple Selection for peer and ban tables (Andrew Chow)

* Merge #9190: qt: Plug many memory leaks

ed998ea qt: Avoid OpenSSL certstore-related memory leak (Wladimir J. van der Laan)
5204598 qt: Avoid shutdownwindow-related memory leak (Wladimir J. van der Laan)
e4f126a qt: Avoid splash-screen related memory leak (Wladimir J. van der Laan)
693384e qt: Prevent thread/memory leak on exiting RPCConsole (Wladimir J. van der Laan)
47db075 qt: Plug many memory leaks (Wladimir J. van der Laan)

* Merge #9218: qt: Show progress overlay when clicking spinner icon

042f9fa qt: Show progress overlay when clicking spinner icon (Wladimir J. van der Laan)
827d9a3 qt: Replace NetworkToggleStatusBarControl with generic ClickableLabel (Wladimir J. van der Laan)

* Merge #9266: Bugfix: Qt/RPCConsole: Put column enum in the right places

df17fe0 Bugfix: Qt/RPCConsole: Put column enum in the right places (Luke Dashjr)

* Merge #9255: qt: layoutAboutToChange signal is called layoutAboutToBeChanged

f36349e qt: Remove on_toggleNetworkActiveButton_clicked from RPCConsole (Wladimir J. van der Laan)
297cc20 qt: layoutAboutToChange signal is called layoutAboutToBeChanged (Wladimir J. van der Laan)

* Use UniValue until bitcoin PR #8788 is backported

Network active toggle was already based on
"[RPC] Give RPC commands more information about the RPC request"
We need to use the old UniValue style until that one is backported

* Merge #8906: [qt] sync-overlay: Don't show progress twice

fafeec3 [qt] sync-overlay: Don't show progress twice (MarcoFalke)

* Merge #8985: Use pindexBestHeader instead of setBlockIndexCandidates for NotifyHeaderTip()

3154d6e [Qt] use NotifyHeaderTip's height and date for the progress update (Jonas Schnelli)
0a261b6 Use pindexBestHeader instead of setBlockIndexCandidates for NotifyHeaderTip() (Jonas Schnelli)

* Merge #9280: [Qt] Show ModalOverlay by pressing the progress bar, allow hiding

89a3723 [Qt] Show ModalOverlay by pressing the progress bar, disabled show() in sync mode (Jonas Schnelli)

* Merge #9461: [Qt] Improve progress display during headers-sync and peer-finding

40ec7c7 [Qt] Improve progress display during headers-sync and peer-finding (Jonas Schnelli)

* Merge #9588: qt: Use nPowTargetSpacing constant

fa4d478 qt: Use nPowTargetSpacing constant (MarcoFalke)

* Hide modal overlay forever when syncing has catched up

Don't allow to open it again by clicking on the progress bar and spinner
icon. Currently the overlay does not show meaningful information about
masternode sync and it gives the impression of being stuck after the block
chain sync is done.

* Don't include chainparams.h in sendcoinsdialog.cpp

This was just a remainder of a backported PR which meant to change some
calculation in this file which does not apply to Dash.

* Also check for fNetworkActive in ConnectNode

* Merge #9528: [qt] Rename formateNiceTimeOffset(qint64) to formatNiceTimeOffset(qint64)

988d300 [qt] Rename formateNiceTimeOffset(qint64) to formatNiceTimeOffset(qint64) (practicalswift)

* Merge #11237: qt: Fixing division by zero in time remaining

c8d38abd6 Refactor tipUpdate as per style guide (MeshCollider)
3b69a08c5 Fix division by zero in time remaining (MeshCollider)

Pull request description:

  Fixes https://github.com/bitcoin/bitcoin/issues/10291, https://github.com/bitcoin/bitcoin/issues/11265

  progressDelta may be 0 (or even negative according to 11265), this checks for that and prints unknown if it is, because we cannot calculate an estimate for the time remaining (would be infinite or negative).

Tree-SHA512: bc5708e5ed6e4670d008219558c5fbb25709bd99a32c98ec39bb74f94a0b7fa058f3d03389ccdd39e6723e6b5b48e34b13ceee7c051c2db631e51d8ec3e1d68c
2017-09-11 16:38:14 +03:00
Alexander Block
9707ca5cea Backport Bitcoin Qt/Gui changes up to 0.14.x part 2 (#1615)
* Merge #7506: Use CCoinControl selection in CWallet::FundTransaction

d6cc6a1 Use CCoinControl selection in CWallet::FundTransaction (João Barbosa)

* Merge #7732: [Qt] Debug window: replace "Build date" with "Datadir"

fc737d1 [Qt] remove unused formatBuildDate method (Jonas Schnelli)
4856f1d [Qt] Debug window: replace "Build date" with "Datadir" (Jonas Schnelli)

* Merge #7707: [RPC][QT] UI support for abandoned transactions

8efed3b [Qt] Support for abandoned/abandoning transactions (Jonas Schnelli)

* Merge #7688: List solvability in listunspent output and improve help

c3932b3 List solvability in listunspent output and improve help (Pieter Wuille)

* Merge #8006: Qt: Add option to disable the system tray icon

8b0e497 Qt: Add option to hide the system tray icon (Tyler Hardin)

* Merge #8073: qt: askpassphrasedialog: Clear pass fields on accept

02ce2a3 qt: askpassphrasedialog: Clear pass fields on accept (Pavel Vasin)

* Merge #8231: [Qt] fix a bug where the SplashScreen will not be hidden during startup

b3e1348 [Qt] fix a bug where the SplashScreen will not be hidden during startup (Jonas Schnelli)

* Merge #8257: Do not ask a UI question from bitcoind

1acf1db Do not ask a UI question from bitcoind (Pieter Wuille)

* Merge #8463: [qt] Remove Priority from coincontrol dialog

fa8dd78 [qt] Remove Priority from coincontrol dialog (MarcoFalke)

* Merge #8678: [Qt][CoinControl] fix UI bug that could result in paying unexpected fee

0480293 [Qt][CoinControl] fix UI bug that could result in paying unexpected fee (Jonas Schnelli)

* Merge #8672: Qt: Show transaction size in transaction details window

c015634 qt: Adding transaction size to transaction details window (Hampus Sjöberg)
 \-- merge fix for s/size/total size/
fdf82fb Adding method GetTotalSize() to CTransaction (Hampus Sjöberg)

* Merge #8371: [Qt] Add out-of-sync modal info layer

08827df [Qt] modalinfolayer: removed unused comments, renamed signal, code style overhaul (Jonas Schnelli)
d8b062e [Qt] only update "amount of blocks left" when the header chain is in-sync (Jonas Schnelli)
e3245b4 [Qt] add out-of-sync modal info layer (Jonas Schnelli)
e47052f [Qt] ClientModel add method to get the height of the header chain (Jonas Schnelli)
a001f18 [Qt] Always pass the numBlocksChanged signal for headers tip changed (Jonas Schnelli)
bd44a04 [Qt] make Out-Of-Sync warning icon clickable (Jonas Schnelli)
0904c3c [Refactor] refactor function that forms human readable text out of a timeoffset (Jonas Schnelli)

* Merge #8805: Trivial: Grammar and capitalization

c9ce17b Trivial: Grammar and capitalization (Derek Miller)

* Merge #8885: gui: fix ban from qt console

cb78c60 gui: fix ban from qt console (Cory Fields)

* Merge #8821: [qt] sync-overlay: Don't block during reindex

fa85e86 [qt] sync-overlay: Don't show estimated number of headers left (MarcoFalke)
faa4de2 [qt] sync-overlay: Don't block during reindex (MarcoFalke)

* Support themes for new transaction_abandoned icon

* Fix constructor call to COutput

* Merge #7842: RPC: do not print minping time in getpeerinfo when no ping received yet

62a6486 RPC: do not print ping info in getpeerinfo when no ping received yet, fix help (Pavel Janík)

* Merge #8918: Qt: Add "Copy URI" to payment request context menu

21f5a63 Qt: Add "Copy URI" to payment request context menu (Luke Dashjr)

* Merge #8925: qt: Display minimum ping in debug window.

1724a40 Display minimum ping in debug window. (R E Broadley)

* Merge #8972: [Qt] make warnings label selectable (jonasschnelli)

ef0c9ee [Qt] make warnings label selectable (Jonas Schnelli)

* Make background of warning icon transparent in modaloverlay

* Merge #9088: Reduce ambiguity of warning message

77cbbd9 Make warning message about wallet balance possibly being incorrect less ambiguous. (R E Broadley)

* Replace Bitcoin with Dash in modal overlay

* Remove clicked signals from labelWalletStatus and labelTransactionsStatus

As both are really just labels, clicking on those is not possible.
This is different in Bitcoin, where these labels are actually buttons.

* Pull out modaloverlay show/hide into it's own if/else block and switch to time based check

Also don't use masternodeSync.IsBlockchainSynced() for now as it won't
report the blockchain being synced before the first block (or other MN
data?) arrives. This would otherwise give the impression that sync is
being stuck.
2017-09-09 10:04:02 +03:00
Alexander Block
169afafd50 Fix duplicate headers download in initial sync (#1589)
* Fix duplicate headers download in initial sync

Now that initial block download is delayed until the headers sync is done,
it was noticed that the initial headers sync may happen multiple times in
parallel in the case new blocks are announced. This happens because for
every block in INV that is received, a getheaders message is immediately
sent out resulting in a full download of the headers chain starting from
the point of where the initial headers sync is currently at. This happens
once for each peer that announces the new block. This slows down the
initial headers sync and increases the chance of another block being
announced before it is finished, probably leading to the same behavior
as already described, slowing down the sync even more...and so on.

This commit delays sending of GETHEADERS to later in case the chain is too
far behind while a new block gets announced. Header chains will still be
downloaded multiple times, but the downloading will start much closer
to the tip of the chain, so the damage is not that bad anymore.

This ensures that we get all headers from all peers, even if any of them
is on another chain. This should avoid what happened in
https://github.com/bitcoin/bitcoin/pull/8054
which needed to be reverted later.

This fixes the Bitcoin issue https://github.com/bitcoin/bitcoin/issues/6755

* Introduce DelayGetHeadersTime chain param and fix tests

The delaying of GETHEADERS in combination with very old block times in
test cases resulted in the delaying being triggered when the first newly
mined block arrives. This results in a completely stalled sync.

This is fixed by avoiding delaying in when running tests.

* Disconnect peers which are not catched up

Peers which stop sending us headers too early are very likely peers which
did not catch up before and stalled for some reason. We should disconnect
these peers and chose another one to continue.
2017-09-04 09:10:52 +03:00
Oleg Girko
b82b9787d2 Backport Bitcoin PR#8128: Net: Turn net structures into dumb storage classes (#1604)
* net: Split resolving out of CNetAddr

* net: Split resolving out of CService

* net: Split resolving out of CSubNet

* net: move CNetAddr/CService/CSubNet out of netbase

* net: narrow include scope after moving to netaddress

Net functionality is no longer needed for CAddress/CAddrman/etc. now that
CNetAddr/CService/CSubNet are dumb storage classes.

* net: Add direct tests for new CSubNet constructors

* net: Have LookupNumeric return a CService directly

Also fix up a few small issues:
- Lookup with "badip:port" now sets the port to 0
- Don't allow assert to have side-effects

* net: fixup nits
2017-09-03 16:29:10 +03:00
Oleg Girko
105122181a Partially backport Bitcoin PR#9626: Clean up a few CConnman cs_vNodes/CNode things (#1591)
* Delete some unused (and broken) functions in CConnman

* Ensure cs_vNodes is held when using the return value from FindNode
2017-08-29 02:51:56 +03:00
Oleg Girko
2472999da0 Backport Bitcoin PR#9441: Net: Massive speedup. Net locks overhaul (#1586)
* net: fix typo causing the wrong receive buffer size

Surprisingly this hasn't been causing me any issues while testing, probably
because it requires lots of large blocks to be flying around.

Send/Recv corks need tests!

* net: make vRecvMsg a list so that we can use splice()

* net: make GetReceiveFloodSize public

This will be needed so that the message processor can cork incoming messages

* net: only disconnect if fDisconnect has been set

These conditions are problematic to check without locking, and we shouldn't be
relying on the refcount to disconnect.

* net: wait until the node is destroyed to delete its recv buffer

when vRecvMsg becomes a private buffer, it won't make sense to allow other
threads to mess with it anymore.

* net: set message deserialization version when it's actually time to deserialize

We'll soon no longer have access to vRecvMsg, and this is more intuitive anyway.

* net: handle message accounting in ReceiveMsgBytes

This allows locking to be pushed down to only where it's needed

Also reuse the current time rather than checking multiple times.

* net: record bytes written before notifying the message processor

* net: Add a simple function for waking the message handler

This may be used publicly in the future

* net: remove useless comments

* net: remove redundant max sendbuffer size check

This is left-over from before there was proper accounting. Hitting 2x the
sendbuffer size should not be possible.

* net: rework the way that the messagehandler sleeps

In order to sleep accurately, the message handler needs to know if _any_ node
has more processing that it should do before the entire thread sleeps.

Rather than returning a value that represents whether ProcessMessages
encountered a message that should trigger a disconnnect, interpret the return
value as whether or not that node has more work to do.

Also, use a global fProcessWake value that can be set by other threads,
which takes precedence (for one cycle) over the messagehandler's decision.

Note that the previous behavior was to only process one message per loop
(except in the case of a bad checksum or invalid header). That was changed in
PR #3180.

The only change here in that regard is that the current node now falls to the
back of the processing queue for the bad checksum/invalid header cases.

* net: add a new message queue for the message processor

This separates the storage of messages from the net and queued messages for
processing, allowing the locks to be split.

* net: add a flag to indicate when a node's process queue is full

Messages are dumped very quickly from the socket handler to the processor, so
it's the depth of the processing queue that's interesting.

The socket handler checks the process queue's size during the brief message
hand-off and pauses if necessary, and the processor possibly unpauses each time
a message is popped off of its queue.

* net: add a flag to indicate when a node's send buffer is full

Similar to the recv flag, but this one indicates whether or not the net's send
buffer is full.

The socket handler checks the send queue when a new message is added and pauses
if necessary, and possibly unpauses after each message is drained from its buffer.

* net: remove cs_vRecvMsg

vRecvMsg is now only touched by the socket handler thread.

The accounting vars (nRecvBytes/nLastRecv/mapRecvBytesPerMsgCmd) are also
only used by the socket handler thread, with the exception of queries from
rpc/gui. These accesses are not threadsafe, but they never were. This needs to
be addressed separately.

Also, update comment describing data flow
2017-08-23 17:20:43 +03:00
Oleg Girko
b9c67258ba Backport Bitcoin PR#9609: net: fix remaining net assertions (#1575) + Dashify
* Dont deserialize nVersion into CNode, should fix #9212

* net: deserialize the entire version message locally

This avoids having some vars set if the version negotiation fails.

Also copy it all into CNode at the same site. nVersion and
fSuccessfullyConnected are set last, as they are the gates for the other vars.
Make them atomic for that reason.

* net: don't run callbacks on nodes that haven't completed the version handshake

Since ForEach* are can be used to send messages to  all nodes, the caller may
end up sending a message before the version handshake is complete. To limit
this, filter out these nodes. While we're at it, may as well filter out
disconnected nodes as well.

Delete unused methods rather than updating them.

* net: Disallow sending messages until the version handshake is complete

This is a change in behavior, though it's much more sane now than before.

* net: log an error rather than asserting if send version is misused

Also cleaned up the comments and moved from the header to the .cpp so that
logging headers aren't needed from net.h

* Implement conditions for ForEachNode() and ForNode() methods of CConnman.

A change making ForEachNode() and ForNode() methods ignore nodes that
have not completed initial handshake have been backported from Bitcoin.
Unfortunately, some Dash-specific code needs to iterate over all nodes.

This change introduces additional condition argument to these methods.
This argument is a functional object that should return true for nodes
that should be taken into account, not ignored.

Two functional objects are provided in CConnman namespace:
* FullyConnectedOnly returns true for nodes that have handshake completed,
* AllNodes returns true for all nodes.

Overloads for ForEachNode() and ForNode() methods without condition argument
are left for compatibility with non-Dash-specific code.
They use FullyConnectedOnly functional object for condition.

Signed-off-by: Oleg Girko <ol@infoserver.lv>

* Iterate over all nodes in Dash-specific code using AllNodes condition.

Use AllNodes functional object as newly introduced condition argument for
ForEachNode() and ForNode() methods of CConnman to iterate over all nodes
where needed in Dash-specific code.

Signed-off-by: Oleg Girko <ol@infoserver.lv>
2017-08-17 21:37:22 +03:00
Oleg Girko
42c784dc7a Backport Bitcoin PR#9289: net: drop boost::thread_group (#1568)
* net: a few small cleanups before replacing boost threads

- Drop the interruption point directly after the pnode allocation. This would
    be leaky if hit.
- Rearrange thread creation so that the socket handler comes first

* net: add CThreadInterrupt and InterruptibleSleep

* net: make net interruptible

Also now that net threads are interruptible, switch them to use std
threads/binds/mutexes/condvars.

* net: make net processing interruptible

* net: remove thread_interrupted catch

This is now a std::thread, so there's no hope of catching a boost interruption
point.

* net: make proxy receives interruptible

* net: misc header cleanups
2017-08-09 19:06:31 +03:00
Oleg Girko
b621cfb5fb Backport Bitcoin PR#8708: net: have CConnman handle message sending (#1553)
* serialization: teach serializers variadics

Also add a variadic CDataStream ctor for ease-of-use.

* connman is in charge of pushing messages

The changes here are dense and subtle, but hopefully all is more explicit
than before.

- CConnman is now in charge of sending data rather than the nodes themselves.
  This is necessary because many decisions need to be made with all nodes in
  mind, and a model that requires the nodes calling up to their manager quickly
  turns to spaghetti.

- The per-node-serializer (ssSend) has been replaced with a (quasi-)const
  send-version. Since the send version for serialization can only change once
  per connection, we now explicitly tag messages with INIT_PROTO_VERSION if
  they are sent before the handshake. With this done, there's no need to lock
  for access to nSendVersion.

  Also, a new stream is used for each message, so there's no need to lock
  during the serialization process.

- This takes care of accounting for optimistic sends, so the
  nOptimisticBytesWritten hack can be removed.

- -dropmessagestest and -fuzzmessagestest have not been preserved, as I suspect
  they haven't been used in years.

* net: switch all callers to connman for pushing messages

Drop all of the old stuff.

* drop the optimistic write counter hack

This is now handled properly in realtime.

* net: remove now-unused ssSend and Fuzz

* net: construct CNodeStates in place

* net: handle version push in InitializeNode
2017-07-27 17:28:05 +03:00
Oleg Girko
82851b439c Backport Bitcoin PR#8049: Expose information on whether transaction relay is enabled in getnetwork (#1545)
* net: Add fRelayTxes flag

Add a fRelayTxes to keep track of the relay transaction flag
we send to other peers.

* rpc: Add `relaytxes` flag to `getnetworkinfo`

Re-work of PR #7841 by dragongem45.
Closes #7771.
2017-07-21 21:31:47 +03:00
Oleg Girko
a9d771e497 Backport Bitcoin PR#8085: p2p: Begin encapsulation (#1537)
* net: move CBanDB and CAddrDB out of net.h/cpp

This will eventually solve a circular dependency

* net: Create CConnman to encapsulate p2p connections

* net: Move socket binding into CConnman

* net: move OpenNetworkConnection into CConnman

* net: move ban and addrman functions into CConnman

* net: Add oneshot functions to CConnman

* net: move added node functions to CConnman

* net: Add most functions needed for vNodes to CConnman

* net: handle nodesignals in CConnman

* net: Pass CConnection to wallet rather than using the global

* net: Add rpc error for missing/disabled p2p functionality

* net: Pass CConnman around as needed

* gui: add NodeID to the peer table

* net: create generic functor accessors and move vNodes to CConnman

* net: move whitelist functions into CConnman

* net: move nLastNodeId to CConnman

* net: move nLocalHostNonce to CConnman

This behavior seems to have been quite racy and broken.

Move nLocalHostNonce into CNode, and check received nonces against all
non-fully-connected nodes. If there's a match, assume we've connected
to ourself.

* net: move messageHandlerCondition to CConnman

* net: move send/recv statistics to CConnman

* net: move SendBufferSize/ReceiveFloodSize to CConnman

* net: move nLocalServices/nRelevantServices to CConnman

These are in-turn passed to CNode at connection time. This allows us to offer
different services to different peers (or test the effects of doing so).

* net: move semOutbound and semMasternodeOutbound to CConnman

* net: SocketSendData returns written size

* net: move max/max-outbound to CConnman

* net: Pass best block known height into CConnman

CConnman then passes the current best height into CNode at creation time.

This way CConnman/CNode have no dependency on main for height, and the signals
only move in one direction.

This also helps to prevent identity leakage a tiny bit. Before this change, an
attacker could theoretically make 2 connections on different interfaces. They
would connect fully on one, and only establish the initial connection on the
other. Once they receive a new block, they would relay it to your first
connection, and immediately commence the version handshake on the second. Since
the new block height is reflected immediately, they could attempt to learn
whether the two connections were correlated.

This is, of course, incredibly unlikely to work due to the small timings
involved and receipt from other senders. But it doesn't hurt to lock-in
nBestHeight at the time of connection, rather than letting the remote choose
the time.

* net: pass CClientUIInterface into CConnman

* net: Drop StartNode/StopNode and use CConnman directly

* net: Introduce CConnection::Options to avoid passing so many params

* net: add nSendBufferMaxSize/nReceiveFloodSize to CConnection::Options

* net: move vNodesDisconnected into CConnman

* Made the ForEachNode* functions in src/net.cpp more pragmatic and self documenting

* Convert ForEachNode* functions to take a templated function argument rather than a std::function to eliminate std::function overhead

* net: move MAX_FEELER_CONNECTIONS into connman
2017-07-21 12:35:19 +03:00
Oleg Girko
d934ffb2ff Added feeler connections increasing good addrs in the tried table. (#1530)
Tests if addresses are online or offline by briefly connecting to them. These short lived connections are referred to as feeler connections. Feeler connections are designed to increase the number of fresh online addresses in tried by selecting and connecting to addresses in new. One feeler connection is attempted on average once every two minutes.

This change was suggested as Countermeasure 4 in
Eclipse Attacks on Bitcoin’s Peer-to-Peer Network, Ethan Heilman,
Alison Kendler, Aviv Zohar, Sharon Goldberg. ePrint Archive Report
2015/263. March 2015.
2017-07-17 13:39:12 +03:00
Oleg Girko
9ce2b966cd Backport Bitcoin PR#8113: Rework addnode behaviour (#1525)
* Rework addnode behaviour

* Use CNode::addeName to track whether a connection to a name is already open
  * A new connection to a previously-connected by-name addednode is only opened when
    the previous one closes (even if the name starts resolving to something else)
  * At most one connection is opened per addednode (even if the name resolves to multiple)
* Unify the code between ThreadOpenAddedNodeConnections and getaddednodeinfo
  * Information about open connections is always returned, and the dns argument becomes a dummy
  * An IP address and inbound/outbound is only reported for the (at most 1) open connection

* Prevent duplicate connections where one is by name and another by ip

* Randomize name lookup result in ConnectSocketByName
2017-07-14 19:58:57 +03:00
chaeplin
f9dd40888e include atomic (#1523) 2017-07-12 23:08:18 +03:00
Oleg Girko
7b5556a294 Backport Bitcoin PR#8084: Add recently accepted blocks and txn to AttemptToEvictConnection (#1522)
* Add recently accepted blocks and txn to AttemptToEvictConnection.

This protects any not-already-protected peers who were the most
 recent four to relay transactions and most recent four to send
 blocks to us.

* Allow disconnecting a netgroup with only one member in eviction.

With the latest additions there are enough protective measures that
 we can take the training wheels off.
2017-07-12 14:13:38 +03:00
Oleg Girko
5a1961e5e3 Backport Bitcoin PR#7906: net: prerequisites for p2p encapsulation changes (#1521)
* net: don't import std namespace

This file is about to be broken up into chunks and moved around. Drop the
namespace now rather than requiring other files to use it.

* net: remove unused set

* net: use the exposed GetNodeSignals() rather than g_signals directly

* net: make Ban/Unban/ClearBan functionality consistent

- Ban/Unban/ClearBan call uiInterface.BannedListChanged() as necessary
- Ban/Unban/ClearBan sync to disk if the operation is user-invoked
- Mark node for disconnection automatically when banning
- Lock cs_vNodes while setting disconnected
- Don't spin in a tight loop while setting disconnected

* net: No need to export DumpBanlist
2017-07-12 04:20:12 +03:00
Oleg Girko
b39c518d5a Backport Bitcoin PR#7749: Enforce expected outbound services (#1508)
* Only store and connect to NODE_NETWORK nodes

* Keep addrman's nService bits consistent with outbound observations

* Verify that outbound connections have expected services

* Don't require services in -addnode

* Introduce enum ServiceFlags for service flags

* Introduce REQUIRED_SERVICES constant
2017-07-05 06:45:23 +03:00
Oleg Girko
6af9955faa Backport Bitcoin PR#7696: Fix de-serialization bug where AddrMan is corrupted after exception (#1507)
* CAddrDB modified so that when de-serialization code throws an exception Addrman is reset to a clean state
* CAddrDB modified to make unit tests possible
* Regression test created to ensure bug is fixed
* StartNode modifed to clear adrman if CAddrDB::Read returns an error code.
2017-07-05 03:40:22 +03:00
Oleg Girko
a443d4e2d0 Backport Bitcoin PRs #6589, #7180 and remaining part of #7181: enable per-command byte counters in CNode (#1496)
* log bytes recv/sent per command

* net: Account for `sendheaders` `verack` messages

Looks like these were forgotten in #6589.

* Backport remaining part of Bitcoin PR bitcoin/bitcoin#7181.

Most of this PR is already merged, but a small part remaining
that makes per-command byte counts in CNode working.

Signed-off-by: Oleg Girko <ol@infoserver.lv>
2017-06-29 04:51:10 +03:00
Tim Flynn
d2871209f9 Node eviction fix (#1392)
* Add keyed netgroup field to CNode

* Improved node eviction implementation

* Remove need for CNodeRef
2017-03-13 07:29:16 +01:00
Tim Flynn
9537062aff Implemented utility functions for copying/releasing vNodes vector (#1382)
* Implemented utility functions for copying/releasing vNodes vector

* Refactor code to use new utility functions CopyNodeVector/ReleaseNodeVector
2017-03-05 23:16:12 +04:00
Tim Flynn
8de792291a Add a mutex lock to protect CNode::nRefCount (#1321)
* Add a mutex lock to protect CNode::nRefCount

* Added logging statement for CNode removal
2017-02-05 20:45:36 +04:00
UdjinM6
1d45023f3e assert on Release (#1317) 2017-02-04 22:47:38 +04:00
UdjinM6
d8797023c8 move mnb verification requests to their own thread (#1274)
* move mnb verification requests to their own thread, should remove related ui/rpc freezes

* vector -> list
2017-01-21 23:03:55 +04:00
Tim Flynn
70b2f3e083 Limit number of warning messages logged by CNode's (#1273) 2017-01-19 23:06:32 +04:00
Tim Flynn
9f2d79d920 Fix masternode rate checks (#1187)
* Added logging to PushInventory

* Fix LogPrint format

* Log errors found during governance syncing

* Turn off rate checks during syncing

* Turn off rate check during maintenance
2016-12-05 00:33:39 +04:00