Merge #11592: 0.15: Backportsv0.15.1rc1

8195cb0d7 rpc: further constrain the libevent workaround (Cory Fields)
34153a7e4 rpc: work-around an upstream libevent bug (Cory Fields)
fc308a6cd Add unit test for stale tip checking (Suhas Daftuar)
2ed0647ac Add CConnmanTest to mutate g_connman in tests (João Barbosa)
a607a95d8 Connect to an extra outbound peer if our tip is stale (Suhas Daftuar)
459f2db42 Track tip update time and last new block announcement from each peer (Suhas Daftuar)
49bf09018 net: Allow connecting to extra outbound peers (Suhas Daftuar)
bb83fe190 Add release notes describing blockmaxweight deprecation (Matt Corallo)
4c82cea99 Use a sensible default for blockmaxweight (Matt Corallo)
7871a7d3b Deprecate confusing blockmaxsize, fix getmininginfo output (Matt Corallo)
6baa317b5 Fix minchainwork test for 0.15 backport (Suhas Daftuar)
55b7abfa8 Make p2p-acceptablock not an extended test (Matt Corallo)
5bec7744d [qa] test that invalid blocks on an invalid chain get a disconnect (Matt Corallo)
92d6105c4 Reject headers building on invalid chains by tracking invalidity (Matt Corallo)
51001d684 Accept unrequested blocks with work equal to our tip (Matt Corallo)
c6e4d0ce8 Stop always storing blocks from whitelisted peers (Matt Corallo)
e976c36dd Rewrite p2p-acceptblock in preparation for slight behavior changes (Matt Corallo)
ec8dedff4 net: Add missing lock in ProcessHeadersMessage(...) (practicalswift)
59b210d9a Disconnect outbound peers relaying invalid headers (Suhas Daftuar)
fc966bbd2 moveonly: factor out headers processing into separate function (Suhas Daftuar)
e3272242e Add unit test for outbound peer eviction (Suhas Daftuar)
9961abf9e Permit disconnection of outbound peers on bad/slow chains (Suhas Daftuar)
bf191a718 Disconnecting from bad outbound peers in IBD (Suhas Daftuar)
d570aa429 Fix uninitialized g_connman crash in Shutdown() (MeshCollider)
0a5477c7e net: stop both net/net_processing before destroying them (Cory Fields)
b4136f21c net: drop unused connman param (Cory Fields)
dc897e53d net: use an interface class rather than signals for message processing (Cory Fields)
8aee55af3 net: pass CConnman via pointer rather than reference (Cory Fields)
6f279652b Rename fAddnode to a more-descriptive "manual_connection" (Matt Corallo)
ffb6ea4e5 Add comment explaining forced processing of compact blocks (Suhas Daftuar)
2df65eeb9 qa: add test for minchainwork use in acceptblock (Suhas Daftuar)
3acec3878 Don't process unrequested, low-work blocks (Suhas Daftuar)
0e9d04bf0 [qa] Test nMinimumChainWork (Suhas Daftuar)
da4908c3a Allow setting nMinimumChainWork on command line (Suhas Daftuar)
41088795d qa: Remove never used return value of sync_with_ping (MarcoFalke)
f3457d0e8 qa: Make tmpdir option an absolute path (MarcoFalke)
9c8006dc3 Avoid opening copied wallet databases simultaneously (Russell Yanofsky)
de7053f11 [wallet] Fix leak in CDB constructor (João Barbosa)
fd79ed6b2 Ensure backupwallet fails when attempting to backup to source file (Tomas van der Wansem)
d94fc336c scripted-diff: rename assert_raises_jsonrpc to assert_raises_rpc error (John Newbery)
623de0acb [tests] do not allow assert_raises_message to be called with JSONRPCException (John Newbery)
5b728c8e9 [tests] remove direct testing on JSONRPCException from individual test cases (John Newbery)

Pull request description:

Tree-SHA512: 9fdb5c47844a899271023d8d445f7fc728e3ad71916490cd9783464684967594b07cda05dd644b722bfcea9fade74d06cfc501e1a68abf118d6d03fbbf7d7707

1 files changed, 33 insertions, 4 deletions

diff --git a/src/init.cpp b/src/init.cpp
index a708295f43..5196eee953 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -193,12 +193,15 @@ void Shutdown()
     }
 #endif
     MapPort(false);
+
+    // Because these depend on each-other, we make sure that neither can be
+    // using the other before destroying them.
     UnregisterValidationInterface(peerLogic.get());
+    if(g_connman) g_connman->Stop();
     peerLogic.reset();
     g_connman.reset();
 
     StopTorControl();
-    UnregisterNodeSignals(GetNodeSignals());
     if (fDumpMempoolLater && gArgs.GetArg("-persistmempool", DEFAULT_PERSIST_MEMPOOL)) {
         DumpMempool();
     }
@@ -362,6 +365,9 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageOpt("-maxorphantx=<n>", strprintf(_("Keep at most <n> unconnectable transactions in memory (default: %u)"), DEFAULT_MAX_ORPHAN_TRANSACTIONS));
     strUsage += HelpMessageOpt("-maxmempool=<n>", strprintf(_("Keep the transaction memory pool below <n> megabytes (default: %u)"), DEFAULT_MAX_MEMPOOL_SIZE));
     strUsage += HelpMessageOpt("-mempoolexpiry=<n>", strprintf(_("Do not keep transactions in the mempool longer than <n> hours (default: %u)"), DEFAULT_MEMPOOL_EXPIRY));
+    if (showDebug) {
+        strUsage += HelpMessageOpt("-minimumchainwork=<hex>", strprintf("Minimum work assumed to exist on a valid chain in hex (default: %s, testnet: %s)", defaultChainParams->GetConsensus().nMinimumChainWork.GetHex(), testnetChainParams->GetConsensus().nMinimumChainWork.GetHex()));
+    }
     strUsage += HelpMessageOpt("-persistmempool", strprintf(_("Whether to save the mempool on shutdown and load on restart (default: %u)"), DEFAULT_PERSIST_MEMPOOL));
     strUsage += HelpMessageOpt("-blockreconstructionextratxn=<n>", strprintf(_("Extra transactions to keep in memory for compact block reconstructions (default: %u)"), DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN));
     strUsage += HelpMessageOpt("-par=<n>", strprintf(_("Set the number of script verification threads (%u to %d, 0 = auto, <0 = leave that many cores free, default: %d)"),
@@ -494,7 +500,7 @@ std::string HelpMessage(HelpMessageMode mode)
 
     strUsage += HelpMessageGroup(_("Block creation options:"));
     strUsage += HelpMessageOpt("-blockmaxweight=<n>", strprintf(_("Set maximum BIP141 block weight (default: %d)"), DEFAULT_BLOCK_MAX_WEIGHT));
-    strUsage += HelpMessageOpt("-blockmaxsize=<n>", strprintf(_("Set maximum block size in bytes (default: %d)"), DEFAULT_BLOCK_MAX_SIZE));
+    strUsage += HelpMessageOpt("-blockmaxsize=<n>", _("Set maximum BIP141 block weight to this * 4. Deprecated, use blockmaxweight"));
     strUsage += HelpMessageOpt("-blockmintxfee=<amt>", strprintf(_("Set lowest fee rate (in %s/kB) for transactions to be included in block creation. (default: %s)"), CURRENCY_UNIT, FormatMoney(DEFAULT_BLOCK_MIN_TX_FEE)));
     if (showDebug)
         strUsage += HelpMessageOpt("-blockversion=<n>", "Override block version to test forking scenarios");
@@ -796,6 +802,15 @@ void InitParameterInteraction()
         if (gArgs.SoftSetBoolArg("-whitelistrelay", true))
             LogPrintf("%s: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1\n", __func__);
     }
+
+    if (gArgs.IsArgSet("-blockmaxsize")) {
+        unsigned int max_size = gArgs.GetArg("-blockmaxsize", 0);
+        if (gArgs.SoftSetArg("blockmaxweight", strprintf("%d", max_size * WITNESS_SCALE_FACTOR))) {
+            LogPrintf("%s: parameter interaction: -blockmaxsize=%d -> setting -blockmaxweight=%d (-blockmaxsize is deprecated!)\n", __func__, max_size, max_size * WITNESS_SCALE_FACTOR);
+        } else {
+            LogPrintf("%s: Ignoring blockmaxsize setting which is overridden by blockmaxweight", __func__);
+        }
+    }
 }
 
 static std::string ResolveErrMsg(const char * const optname, const std::string& strBind)
@@ -979,6 +994,20 @@ bool AppInitParameterInteraction()
     else
         LogPrintf("Validating signatures for all blocks.\n");
 
+    if (gArgs.IsArgSet("-minimumchainwork")) {
+        const std::string minChainWorkStr = gArgs.GetArg("-minimumchainwork", "");
+        if (!IsHexNumber(minChainWorkStr)) {
+            return InitError(strprintf("Invalid non-hex (%s) minimum chain work value specified", minChainWorkStr));
+        }
+        nMinimumChainWork = UintToArith256(uint256S(minChainWorkStr));
+    } else {
+        nMinimumChainWork = UintToArith256(chainparams.GetConsensus().nMinimumChainWork);
+    }
+    LogPrintf("Setting nMinimumChainWork=%s\n", nMinimumChainWork.GetHex());
+    if (nMinimumChainWork < UintToArith256(chainparams.GetConsensus().nMinimumChainWork)) {
+        LogPrintf("Warning: nMinimumChainWork set below default value of %s\n", chainparams.GetConsensus().nMinimumChainWork.GetHex());
+    }
+
     // mempool limits
     int64_t nMempoolSizeMax = gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
     int64_t nMempoolSizeMin = gArgs.GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000 * 40;
@@ -1258,9 +1287,8 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
     g_connman = std::unique_ptr<CConnman>(new CConnman(GetRand(std::numeric_limits<uint64_t>::max()), GetRand(std::numeric_limits<uint64_t>::max())));
     CConnman& connman = *g_connman;
 
-    peerLogic.reset(new PeerLogicValidation(&connman));
+    peerLogic.reset(new PeerLogicValidation(&connman, scheduler));
     RegisterValidationInterface(peerLogic.get());
-    RegisterNodeSignals(GetNodeSignals());
 
     // sanitize comments per BIP-0014, format user agent and check total size
     std::vector<std::string> uacomments;
@@ -1651,6 +1679,7 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
     connOptions.nMaxFeeler = 1;
     connOptions.nBestHeight = chainActive.Height();
     connOptions.uiInterface = &uiInterface;
+    connOptions.m_msgproc = peerLogic.get();
     connOptions.nSendBufferMaxSize = 1000*gArgs.GetArg("-maxsendbuffer", DEFAULT_MAXSENDBUFFER);
     connOptions.nReceiveFloodSize = 1000*gArgs.GetArg("-maxreceivebuffer", DEFAULT_MAXRECEIVEBUFFER);