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dash/src/net_processing.h

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Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_NET_PROCESSING_H
#define BITCOIN_NET_PROCESSING_H
#include "net.h"
#include "validationinterface.h"
Merge #8179: Evict orphans which are included or precluded by accepted blocks. 54326a6 Increase maximum orphan size to 100,000 bytes. (Gregory Maxwell) 8c99d1b Treat orphans as implicit inv for parents, discard when parents rejected. (Gregory Maxwell) 11cc143 Adds an expiration time for orphan tx. (Gregory Maxwell) db0ffe8 This eliminates the primary leak that causes the orphan map to always grow to its maximum size. (Gregory Maxwell) 1b0bcc5 Track orphan by prev COutPoint rather than prev hash (Pieter Wuille)
2016-06-20 14:45:34 +02:00
/** Default for -maxorphantx, maximum number of orphan transactions kept in memory */
static const unsigned int DEFAULT_MAX_ORPHAN_TRANSACTIONS = 100;
/** Expiration time for orphan transactions in seconds */
static const int64_t ORPHAN_TX_EXPIRE_TIME = 20 * 60;
/** Minimum time between orphan transactions expire time checks in seconds */
static const int64_t ORPHAN_TX_EXPIRE_INTERVAL = 5 * 60;
Backport "assumed valid blocks" feature from Bitcoin 0.13 (#1582) * IBD check uses minimumchain work instead of checkpoints. This introduces a 'minimum chain work' chainparam which is intended to be the known amount of work in the chain for the network at the time of software release. If you don't have this much work, you're not yet caught up. This is used instead of the count of blocks test from checkpoints. This criteria is trivial to keep updated as there is no element of subjectivity, trust, or position dependence to it. It is also a more reliable metric of sync status than a block count. * Remove GetTotalBlocksEstimate and checkpoint tests that test nothing. GetTotalBlocksEstimate is no longer used and it was the only thing the checkpoint tests were testing. Since checkpoints are on their way out it makes more sense to remove the test file than to cook up a new pointless test. # Conflicts: # src/Makefile.test.include # src/test/Checkpoints_tests.cpp * IsInitialBlockDownload no longer uses header-only timestamps. This avoids a corner case (mostly visible on testnet) where bogus headers can keep nodes in IsInitialBlockDownload. * Delay parallel block download until chain has sufficient work nMinimumChainWork is an anti-DoS threshold; wait until we have a proposed tip with more work than that before downloading blocks towards that tip. * Add timeout for headers sync At startup, we choose one peer to serve us the headers chain, until our best header is close to caught up. Disconnect this peer if more than 15 minutes + 1ms/expected_header passes and our best header is still more than 1 day away from current time. * Introduce assumevalid setting to skip presumed valid scripts. This disentangles the script validation skipping from checkpoints. A new option is introduced "assumevalid" which specifies a block whos ancestors we assume all have valid scriptsigs and so we do not check them when they are also burried under the best header by two weeks worth of work. Unlike checkpoints this has no influence on consensus unless you set it to a block with an invalid history. Because of this it can be easily be updated without risk of influencing the network consensus. This results in a massive IBD speedup. This approach was independently recommended by Peter Todd and Luke-Jr since POW based signature skipping (see PR#9180) does not have the verifiable properties of a specific hash and may create bad incentives. The downside is that, like checkpoints, the defaults bitrot and older releases will sync slower. On the plus side users can provide their own value here, and if they set it to something crazy all that will happen is more time will be spend validating signatures. Checkblocks and checklevel are also moved to the hidden debug options: Especially now that checkblocks has a low default there is little need to change these settings, and users frequently misunderstand them as influencing security or IBD speed. By hiding them we offset the space added by this new option. * Add consensusParams to FindNextBlocksToDownload * Adjust check in headers timeout logic to align with 144 blocks in Dash
2017-08-23 16:21:08 +02:00
/** Headers download timeout expressed in microseconds
* Timeout = base + per_header * (expected number of headers) */
static constexpr int64_t HEADERS_DOWNLOAD_TIMEOUT_BASE = 15 * 60 * 1000000; // 15 minutes
static constexpr int64_t HEADERS_DOWNLOAD_TIMEOUT_PER_HEADER = 1000; // 1ms/header
Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
/** Register with a network node to receive its signals */
void RegisterNodeSignals(CNodeSignals& nodeSignals);
/** Unregister a network node */
void UnregisterNodeSignals(CNodeSignals& nodeSignals);
class PeerLogicValidation : public CValidationInterface {
private:
CConnman* connman;
public:
PeerLogicValidation(CConnman* connmanIn);
Merge #8930: Move orphan processing to ActivateBestChain d2b88f9 Move orphan-conflict removal from main logic into a callback (Matt Corallo) 97e2802 Erase orphans per-transaction instead of per-block (Matt Corallo) ec4525c Move orphan processing to ActivateBestChain (Matt Corallo)
2016-11-24 01:19:14 +01:00
virtual void SyncTransaction(const CTransaction& tx, const CBlockIndex* pindex, int nPosInBlock);
Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload);
virtual void BlockChecked(const CBlock& block, const CValidationState& state);
};
struct CNodeStateStats {
int nMisbehavior;
int nSyncHeight;
int nCommonHeight;
std::vector<int> vHeightInFlight;
};
/** Get statistics from node state */
bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats);
/** Increase a node's misbehavior score. */
void Misbehaving(NodeId nodeid, int howmuch);
/** Process protocol messages received from a given node */
Merge #9659: Net: Turn some methods and params/variables const 0729102 Net: pass interruptMsgProc as const where possible (Jorge Timón) fc7f2ff Net: Make CNetMsgMaker more const (Jorge Timón) d45955f Net: CConnman: Make some methods const (Jorge Timón)
2017-02-06 14:31:37 +01:00
bool ProcessMessages(CNode* pfrom, CConnman& connman, const std::atomic<bool>& interrupt);
Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
/**
* Send queued protocol messages to be sent to a give node.
*
* @param[in] pto The node which we are sending messages to.
* @param[in] connman The connection manager for that node.
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 18:06:31 +02:00
* @param[in] interrupt Interrupt condition for processing threads
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 16:20:43 +02:00
* @return True if there is more work to be done
Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
*/
Merge #9659: Net: Turn some methods and params/variables const 0729102 Net: pass interruptMsgProc as const where possible (Jorge Timón) fc7f2ff Net: Make CNetMsgMaker more const (Jorge Timón) d45955f Net: CConnman: Make some methods const (Jorge Timón)
2017-02-06 14:31:37 +01:00
bool SendMessages(CNode* pto, CConnman& connman, const std::atomic<bool>& interrupt);
Backport Bitcoin PR#9260: Mrs Peacock in The Library with The Candlestick (killed main.{h,cpp}) (#1566) * Remove orphan state wipe from UnloadBlockIndex. As orphan state is now "network state", like in d6ea737be19a0001e69e4e854eb1cef21523ea7a, UnloadBlockIndex is only used during init if we end up reindexing to clear our block state so that we can start over. However, at that time no connections have been brought up as CConnman hasn't been started yet, so all of the network processing state logic is empty when its called. * Move network-msg-processing code out of main to its own file * Rename the remaining main.{h,cpp} to validation.{h,cpp}
2017-08-09 02:19:06 +02:00
#endif // BITCOIN_NET_PROCESSING_H
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