Merge pull request #1587 from langerhans/masterv1.14.0

Merge 1.14 into master

1 files changed, 825 insertions, 624 deletions

diff --git a/src/init.cpp b/src/init.cpp
index 1bf6f28ed..0b7777fa0 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2014 The Bitcoin Core developers
+// Copyright (c) 2009-2016 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -11,35 +11,49 @@
 
 #include "addrman.h"
 #include "amount.h"
+#include "chain.h"
+#include "chainparams.h"
 #include "checkpoints.h"
 #include "compat/sanity.h"
 #include "consensus/validation.h"
+#include "httpserver.h"
+#include "httprpc.h"
 #include "key.h"
-#include "main.h"
+#include "validation.h"
 #include "miner.h"
+#include "netbase.h"
 #include "net.h"
-#include "rpcserver.h"
+#include "net_processing.h"
+#include "policy/policy.h"
+#include "rpc/server.h"
+#include "rpc/register.h"
 #include "script/standard.h"
+#include "script/sigcache.h"
 #include "scheduler.h"
+#include "timedata.h"
 #include "txdb.h"
+#include "txmempool.h"
+#include "torcontrol.h"
 #include "ui_interface.h"
 #include "util.h"
 #include "utilmoneystr.h"
 #include "validationinterface.h"
 #ifdef ENABLE_WALLET
 #include "wallet/wallet.h"
-#include "wallet/walletdb.h"
 #endif
-
+#include "warnings.h"
 #include <stdint.h>
 #include <stdio.h>
+#include <memory>
 
 #ifndef WIN32
 #include <signal.h>
 #endif
 
+#include <boost/algorithm/string/classification.hpp>
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/algorithm/string/replace.hpp>
+#include <boost/algorithm/string/split.hpp>
 #include <boost/bind.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/function.hpp>
@@ -48,12 +62,22 @@
 #include <boost/thread.hpp>
 #include <openssl/crypto.h>
 
-using namespace std;
-
-#ifdef ENABLE_WALLET
-CWallet* pwalletMain = NULL;
+#if ENABLE_ZMQ
+#include "zmq/zmqnotificationinterface.h"
 #endif
+
 bool fFeeEstimatesInitialized = false;
+static const bool DEFAULT_PROXYRANDOMIZE = true;
+static const bool DEFAULT_REST_ENABLE = false;
+static const bool DEFAULT_DISABLE_SAFEMODE = false;
+static const bool DEFAULT_STOPAFTERBLOCKIMPORT = false;
+
+std::unique_ptr<CConnman> g_connman;
+std::unique_ptr<PeerLogicValidation> peerLogic;
+
+#if ENABLE_ZMQ
+static CZMQNotificationInterface* pzmqNotificationInterface = NULL;
+#endif
 
 #ifdef WIN32
 // Win32 LevelDB doesn't use filedescriptors, and the ones used for
@@ -73,7 +97,6 @@ enum BindFlags {
 };
 
 static const char* FEE_ESTIMATES_FILENAME="fee_estimates.dat";
-CClientUIInterface uiInterface; // Declared but not defined in ui_interface.h
 
 //////////////////////////////////////////////////////////////////////////////
 //
@@ -105,7 +128,8 @@ CClientUIInterface uiInterface; // Declared but not defined in ui_interface.h
 // shutdown thing.
 //
 
-volatile bool fRequestShutdown = false;
+std::atomic<bool> fRequestShutdown(false);
+std::atomic<bool> fDumpMempoolLater(false);
 
 void StartShutdown()
 {
@@ -116,6 +140,11 @@ bool ShutdownRequested()
     return fRequestShutdown;
 }
 
+/**
+ * This is a minimally invasive approach to shutdown on LevelDB read errors from the
+ * chainstate, while keeping user interface out of the common library, which is shared
+ * between bitcoind, and bitcoin-qt and non-server tools.
+*/
 class CCoinsViewErrorCatcher : public CCoinsViewBacked
 {
 public:
@@ -138,6 +167,19 @@ public:
 
 static CCoinsViewDB *pcoinsdbview = NULL;
 static CCoinsViewErrorCatcher *pcoinscatcher = NULL;
+static std::unique_ptr<ECCVerifyHandle> globalVerifyHandle;
+
+void Interrupt(boost::thread_group& threadGroup)
+{
+    InterruptHTTPServer();
+    InterruptHTTPRPC();
+    InterruptRPC();
+    InterruptREST();
+    InterruptTorControl();
+    if (g_connman)
+        g_connman->Interrupt();
+    threadGroup.interrupt_all();
+}
 
 void Shutdown()
 {
@@ -153,14 +195,25 @@ void Shutdown()
     /// module was initialized.
     RenameThread("dogecoin-shutoff");
     mempool.AddTransactionsUpdated(1);
-    StopRPCThreads();
+
+    StopHTTPRPC();
+    StopREST();
+    StopRPC();
+    StopHTTPServer();
 #ifdef ENABLE_WALLET
+    // Dogecoin 1.14 TODO: ShutdownRPCMining();
     if (pwalletMain)
         pwalletMain->Flush(false);
-    GenerateBitcoins(false, NULL, 0);
 #endif
-    StopNode();
+    MapPort(false);
+    UnregisterValidationInterface(peerLogic.get());
+    peerLogic.reset();
+    g_connman.reset();
+
+    StopTorControl();
     UnregisterNodeSignals(GetNodeSignals());
+    if (fDumpMempoolLater)
+        DumpMempool();
 
     if (fFeeEstimatesInitialized)
     {
@@ -191,6 +244,15 @@ void Shutdown()
     if (pwalletMain)
         pwalletMain->Flush(true);
 #endif
+
+#if ENABLE_ZMQ
+    if (pzmqNotificationInterface) {
+        UnregisterValidationInterface(pzmqNotificationInterface);
+        delete pzmqNotificationInterface;
+        pzmqNotificationInterface = NULL;
+    }
+#endif
+
 #ifndef WIN32
     try {
         boost::filesystem::remove(GetPidFile());
@@ -203,6 +265,7 @@ void Shutdown()
     delete pwalletMain;
     pwalletMain = NULL;
 #endif
+    globalVerifyHandle.reset();
     ECC_Stop();
     LogPrintf("%s: done\n", __func__);
 }
@@ -220,32 +283,26 @@ void HandleSIGHUP(int)
     fReopenDebugLog = true;
 }
 
-bool static InitError(const std::string &str)
-{
-    uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
-    return false;
-}
-
-bool static InitWarning(const std::string &str)
-{
-    uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
-    return true;
-}
-
-bool static Bind(const CService &addr, unsigned int flags) {
+bool static Bind(CConnman& connman, const CService &addr, unsigned int flags) {
     if (!(flags & BF_EXPLICIT) && IsLimited(addr))
         return false;
     std::string strError;
-    if (!BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
+    if (!connman.BindListenPort(addr, strError, (flags & BF_WHITELIST) != 0)) {
         if (flags & BF_REPORT_ERROR)
             return InitError(strError);
         return false;
     }
     return true;
 }
+void OnRPCStarted()
+{
+    uiInterface.NotifyBlockTip.connect(&RPCNotifyBlockChange);
+}
 
 void OnRPCStopped()
 {
+    uiInterface.NotifyBlockTip.disconnect(&RPCNotifyBlockChange);
+    RPCNotifyBlockChange(false, nullptr);
     cvBlockChange.notify_all();
     LogPrint("rpc", "RPC stopped.\n");
 }
@@ -253,10 +310,10 @@ void OnRPCStopped()
 void OnRPCPreCommand(const CRPCCommand& cmd)
 {
     // Observe safe mode
-    string strWarning = GetWarnings("rpc");
-    if (strWarning != "" && !GetBoolArg("-disablesafemode", false) &&
+    std::string strWarning = GetWarnings("rpc");
+    if (strWarning != "" && !GetBoolArg("-disablesafemode", DEFAULT_DISABLE_SAFEMODE) &&
         !cmd.okSafeMode)
-        throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
+        throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, std::string("Safe mode: ") + strWarning);
 }
 
 std::string HelpMessage(HelpMessageMode mode)
@@ -264,184 +321,187 @@ std::string HelpMessage(HelpMessageMode mode)
     const bool showDebug = GetBoolArg("-help-debug", false);
 
     // When adding new options to the categories, please keep and ensure alphabetical ordering.
-    // Do not translate _(...) -help-debug options, Many technical terms, and only a very small audience, so is unnecessary stress to translators
-
-    string strUsage = HelpMessageGroup(_("Options:"));
-    strUsage += HelpMessageOpt("-?", _("This help message"));
+    // Do not translate _(...) -help-debug options, Many technical terms, and only a very small audience, so is unnecessary stress to translators.
+    std::string strUsage = HelpMessageGroup(_("Options:"));
+    strUsage += HelpMessageOpt("-?", _("Print this help message and exit"));
+    strUsage += HelpMessageOpt("-version", _("Print version and exit"));
     strUsage += HelpMessageOpt("-alerts", strprintf(_("Receive and display P2P network alerts (default: %u)"), DEFAULT_ALERTS));
     strUsage += HelpMessageOpt("-alertnotify=<cmd>", _("Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message)"));
     strUsage += HelpMessageOpt("-blocknotify=<cmd>", _("Execute command when the best block changes (%s in cmd is replaced by block hash, %i is replaced by block number)"));
-    strUsage += HelpMessageOpt("-checkblocks=<n>", strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), 288));
-    strUsage += HelpMessageOpt("-checklevel=<n>", strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), 3));
-    strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), "dogecoin.conf"));
+    if (showDebug)
+        strUsage += HelpMessageOpt("-blocksonly", strprintf(_("Whether to operate in a blocks only mode (default: %u)"), DEFAULT_BLOCKSONLY));
+    strUsage +=HelpMessageOpt("-assumevalid=<hex>", strprintf(_("If this block is in the chain assume that it and its ancestors are valid and potentially skip their script verification (0 to verify all, default: %s, testnet: %s)"), Params(CBaseChainParams::MAIN).GetConsensus(0).defaultAssumeValid.GetHex(), Params(CBaseChainParams::TESTNET).GetConsensus(0).defaultAssumeValid.GetHex()));
+    strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), BITCOIN_CONF_FILENAME));
     if (mode == HMM_BITCOIND)
     {
-#if !defined(WIN32)
+#if HAVE_DECL_DAEMON
         strUsage += HelpMessageOpt("-daemon", _("Run in the background as a daemon and accept commands"));
 #endif
     }
     strUsage += HelpMessageOpt("-datadir=<dir>", _("Specify data directory"));
     strUsage += HelpMessageOpt("-dbcache=<n>", strprintf(_("Set database cache size in megabytes (%d to %d, default: %d)"), nMinDbCache, nMaxDbCache, nDefaultDbCache));
-    strUsage += HelpMessageOpt("-loadblock=<file>", _("Imports blocks from external blk000??.dat file") + " " + _("on startup"));
+    if (showDebug)
+        strUsage += HelpMessageOpt("-feefilter", strprintf("Tell other nodes to filter invs to us by our mempool min fee (default: %u)", DEFAULT_FEEFILTER));
+    strUsage += HelpMessageOpt("-loadblock=<file>", _("Imports blocks from external blk000??.dat file on startup"));
     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));
+    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)"),
-        -(int)boost::thread::hardware_concurrency(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));
+        -GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));
 #ifndef WIN32
-    strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), "dogecoind.pid"));
+    strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), BITCOIN_PID_FILENAME));
 #endif
-    strUsage += HelpMessageOpt("-prune=<n>", strprintf(_("Reduce storage requirements by pruning (deleting) old blocks. This mode disables wallet support and is incompatible with -txindex. "
+    strUsage += HelpMessageOpt("-prune=<n>", strprintf(_("Reduce storage requirements by enabling pruning (deleting) of old blocks. This allows the pruneblockchain RPC to be called to delete specific blocks, and enables automatic pruning of old blocks if a target size in MiB is provided. This mode is incompatible with -txindex and -rescan. "
             "Warning: Reverting this setting requires re-downloading the entire blockchain. "
-            "(default: 0 = disable pruning blocks, >%u = target size in MiB to use for block files)"), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
-    strUsage += HelpMessageOpt("-reindex", _("Rebuild block chain index from current blk000??.dat files on startup"));
-#if !defined(WIN32)
+            "(default: 0 = disable pruning blocks, 1 = allow manual pruning via RPC, >%u = automatically prune block files to stay under the specified target size in MiB)"), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
+    strUsage += HelpMessageOpt("-reindex-chainstate", _("Rebuild chain state from the currently indexed blocks"));
+    strUsage += HelpMessageOpt("-reindex", _("Rebuild chain state and block index from the blk*.dat files on disk"));
+#ifndef WIN32
     strUsage += HelpMessageOpt("-sysperms", _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)"));
 #endif
-    strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), 0));
+    strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), DEFAULT_TXINDEX));
 
     strUsage += HelpMessageGroup(_("Connection options:"));
     strUsage += HelpMessageOpt("-addnode=<ip>", _("Add a node to connect to and attempt to keep the connection open"));
-    strUsage += HelpMessageOpt("-banscore=<n>", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), 100));
-    strUsage += HelpMessageOpt("-bantime=<n>", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), 86400));
+    strUsage += HelpMessageOpt("-banscore=<n>", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), DEFAULT_BANSCORE_THRESHOLD));
+    strUsage += HelpMessageOpt("-bantime=<n>", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), DEFAULT_MISBEHAVING_BANTIME));
     strUsage += HelpMessageOpt("-bind=<addr>", _("Bind to given address and always listen on it. Use [host]:port notation for IPv6"));
-    strUsage += HelpMessageOpt("-connect=<ip>", _("Connect only to the specified node(s)"));
+    strUsage += HelpMessageOpt("-connect=<ip>", _("Connect only to the specified node(s); -noconnect or -connect=0 alone to disable automatic connections"));
     strUsage += HelpMessageOpt("-discover", _("Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)"));
-    strUsage += HelpMessageOpt("-dns", _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + _("(default: 1)"));
-    strUsage += HelpMessageOpt("-dnsseed", _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect)"));
+    strUsage += HelpMessageOpt("-dns", _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + strprintf(_("(default: %u)"), DEFAULT_NAME_LOOKUP));
+    strUsage += HelpMessageOpt("-dnsseed", _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect/-noconnect)"));
     strUsage += HelpMessageOpt("-externalip=<ip>", _("Specify your own public address"));
-    strUsage += HelpMessageOpt("-forcednsseed", strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), 0));
-    strUsage += HelpMessageOpt("-listen", _("Accept connections from outside (default: 1 if no -proxy or -connect)"));
-    strUsage += HelpMessageOpt("-maxconnections=<n>", strprintf(_("Maintain at most <n> connections to peers (default: %u)"), 125));
-    strUsage += HelpMessageOpt("-maxreceivebuffer=<n>", strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), 5000));
-    strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), 1000));
+    strUsage += HelpMessageOpt("-forcednsseed", strprintf(_("Always query for peer addresses via DNS lookup (default: %u)"), DEFAULT_FORCEDNSSEED));
+    strUsage += HelpMessageOpt("-listen", _("Accept connections from outside (default: 1 if no -proxy or -connect/-noconnect)"));
+    strUsage += HelpMessageOpt("-listenonion", strprintf(_("Automatically create Tor hidden service (default: %d)"), DEFAULT_LISTEN_ONION));
+    strUsage += HelpMessageOpt("-maxconnections=<n>", strprintf(_("Maintain at most <n> connections to peers (default: %u)"), DEFAULT_MAX_PEER_CONNECTIONS));
+    strUsage += HelpMessageOpt("-maxreceivebuffer=<n>", strprintf(_("Maximum per-connection receive buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXRECEIVEBUFFER));
+    strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), DEFAULT_MAXSENDBUFFER));
+    strUsage += HelpMessageOpt("-maxtimeadjustment", strprintf(_("Maximum allowed median peer time offset adjustment. Local perspective of time may be influenced by peers forward or backward by this amount. (default: %u seconds)"), DEFAULT_MAX_TIME_ADJUSTMENT));
     strUsage += HelpMessageOpt("-onion=<ip:port>", strprintf(_("Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: %s)"), "-proxy"));
     strUsage += HelpMessageOpt("-onlynet=<net>", _("Only connect to nodes in network <net> (ipv4, ipv6 or onion)"));
-    strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), 1));
-    strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), 22556, 44556));
+    strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), DEFAULT_PERMIT_BAREMULTISIG));
+    strUsage += HelpMessageOpt("-peerbloomfilters", strprintf(_("Support filtering of blocks and transaction with bloom filters (default: %u)"), DEFAULT_PEERBLOOMFILTERS));
+    strUsage += HelpMessageOpt("-port=<port>", strprintf(_("Listen for connections on <port> (default: %u or testnet: %u)"), Params(CBaseChainParams::MAIN).GetDefaultPort(), Params(CBaseChainParams::TESTNET).GetDefaultPort()));
     strUsage += HelpMessageOpt("-proxy=<ip:port>", _("Connect through SOCKS5 proxy"));
-    strUsage += HelpMessageOpt("-proxyrandomize", strprintf(_("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)"), 1));
+    strUsage += HelpMessageOpt("-proxyrandomize", strprintf(_("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)"), DEFAULT_PROXYRANDOMIZE));
+    strUsage += HelpMessageOpt("-rpcserialversion", strprintf(_("Sets the serialization of raw transaction or block hex returned in non-verbose mode, non-segwit(0) or segwit(1) (default: %d)"), DEFAULT_RPC_SERIALIZE_VERSION));
     strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect"));
     strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT));
-    strUsage += HelpMessageOpt("-bloomfilters", _("Allow peers to set bloom filters (default: 1)"));
+    strUsage += HelpMessageOpt("-torcontrol=<ip>:<port>", strprintf(_("Tor control port to use if onion listening enabled (default: %s)"), DEFAULT_TOR_CONTROL));
+    strUsage += HelpMessageOpt("-torpassword=<pass>", _("Tor control port password (default: empty)"));
 #ifdef USE_UPNP
 #if USE_UPNP
-    strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening)"));
+    strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening and no -proxy)"));
 #else
     strUsage += HelpMessageOpt("-upnp", strprintf(_("Use UPnP to map the listening port (default: %u)"), 0));
 #endif
 #endif
     strUsage += HelpMessageOpt("-whitebind=<addr>", _("Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6"));
-    strUsage += HelpMessageOpt("-whitelist=<netmask>", _("Whitelist peers connecting from the given netmask or IP address. Can be specified multiple times.") +
+    strUsage += HelpMessageOpt("-whitelist=<IP address or network>", _("Whitelist peers connecting from the given IP address (e.g. 1.2.3.4) or CIDR notated network (e.g. 1.2.3.0/24). Can be specified multiple times.") +
         " " + _("Whitelisted peers cannot be DoS banned and their transactions are always relayed, even if they are already in the mempool, useful e.g. for a gateway"));
-        
+    strUsage += HelpMessageOpt("-whitelistrelay", strprintf(_("Accept relayed transactions received from whitelisted peers even when not relaying transactions (default: %d)"), DEFAULT_WHITELISTRELAY));
+    strUsage += HelpMessageOpt("-whitelistforcerelay", strprintf(_("Force relay of transactions from whitelisted peers even if they violate local relay policy (default: %d)"), DEFAULT_WHITELISTFORCERELAY));
+    strUsage += HelpMessageOpt("-maxuploadtarget=<n>", strprintf(_("Tries to keep outbound traffic under the given target (in MiB per 24h), 0 = no limit (default: %d)"), DEFAULT_MAX_UPLOAD_TARGET));
 
 #ifdef ENABLE_WALLET
-    strUsage += HelpMessageGroup(_("Wallet options:"));
-    strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
-    strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), 100));
-    if (showDebug)
-        strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf("Fees (in DOGE/Kb) smaller than this are considered zero fee for transaction creation (default: %s)",
-            FormatMoney(CWallet::minTxFee.GetFeePerK())));
-    strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in DOGE/kB) to add to transactions you send (default: %s)"), FormatMoney(payTxFee.GetFeePerK())));
-    strUsage += HelpMessageOpt("-rescan", _("Rescan the block chain for missing wallet transactions") + " " + _("on startup"));
-    strUsage += HelpMessageOpt("-salvagewallet", _("Attempt to recover private keys from a corrupt wallet.dat") + " " + _("on startup"));
-    strUsage += HelpMessageOpt("-sendfreetransactions", strprintf(_("Send transactions as zero-fee transactions if possible (default: %u)"), 0));
-    strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), 1));
-    // Dogecoin: Disable TX confirm target as the dust prevention fees make
-    // the fee estimation code produce bizarre results.
-    // strUsage += HelpMessageOpt("-txconfirmtarget=<n>", strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), DEFAULT_TX_CONFIRM_TARGET));
-    strUsage += HelpMessageOpt("-maxtxfee=<amt>", strprintf(_("Maximum total fees to use in a single wallet transaction; setting this too low may abort large transactions (default: %s)"),
-        FormatMoney(maxTxFee)));
-    strUsage += HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format") + " " + _("on startup"));
-    strUsage += HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), "wallet.dat"));
-    strUsage += HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), true));
-    strUsage += HelpMessageOpt("-walletnotify=<cmd>", _("Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)"));
-    strUsage += HelpMessageOpt("-zapwallettxes=<mode>", _("Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup") +
-        " " + _("(1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data)"));
+    strUsage += CWallet::GetWalletHelpString(showDebug);
+#endif
 
+#if ENABLE_ZMQ
+    strUsage += HelpMessageGroup(_("ZeroMQ notification options:"));
+    strUsage += HelpMessageOpt("-zmqpubhashblock=<address>", _("Enable publish hash block in <address>"));
+    strUsage += HelpMessageOpt("-zmqpubhashtx=<address>", _("Enable publish hash transaction in <address>"));
+    strUsage += HelpMessageOpt("-zmqpubrawblock=<address>", _("Enable publish raw block in <address>"));
+    strUsage += HelpMessageOpt("-zmqpubrawtx=<address>", _("Enable publish raw transaction in <address>"));
 #endif
 
     strUsage += HelpMessageGroup(_("Debugging/Testing options:"));
+    strUsage += HelpMessageOpt("-uacomment=<cmt>", _("Append comment to the user agent string"));
     if (showDebug)
     {
-        strUsage += HelpMessageOpt("-checkpoints", strprintf("Only accept block chain matching built-in checkpoints (default: %u)", 1));
-        strUsage += HelpMessageOpt("-dblogsize=<n>", strprintf("Flush database activity from memory pool to disk log every <n> megabytes (default: %u)", 100));
-        strUsage += HelpMessageOpt("-disablesafemode", strprintf("Disable safemode, override a real safe mode event (default: %u)", 0));
-        strUsage += HelpMessageOpt("-testsafemode", strprintf("Force safe mode (default: %u)", 0));
+        strUsage += HelpMessageOpt("-checkblocks=<n>", strprintf(_("How many blocks to check at startup (default: %u, 0 = all)"), DEFAULT_CHECKBLOCKS));
+        strUsage += HelpMessageOpt("-checklevel=<n>", strprintf(_("How thorough the block verification of -checkblocks is (0-4, default: %u)"), DEFAULT_CHECKLEVEL));
+        strUsage += HelpMessageOpt("-checkblockindex", strprintf("Do a full consistency check for mapBlockIndex, setBlockIndexCandidates, chainActive and mapBlocksUnlinked occasionally. Also sets -checkmempool (default: %u)", Params(CBaseChainParams::MAIN).DefaultConsistencyChecks()));
+        strUsage += HelpMessageOpt("-checkmempool=<n>", strprintf("Run checks every <n> transactions (default: %u)", Params(CBaseChainParams::MAIN).DefaultConsistencyChecks()));
+        strUsage += HelpMessageOpt("-checkpoints", strprintf("Disable expensive verification for known chain history (default: %u)", DEFAULT_CHECKPOINTS_ENABLED));
+        strUsage += HelpMessageOpt("-disablesafemode", strprintf("Disable safemode, override a real safe mode event (default: %u)", DEFAULT_DISABLE_SAFEMODE));
+        strUsage += HelpMessageOpt("-testsafemode", strprintf("Force safe mode (default: %u)", DEFAULT_TESTSAFEMODE));
         strUsage += HelpMessageOpt("-dropmessagestest=<n>", "Randomly drop 1 of every <n> network messages");
         strUsage += HelpMessageOpt("-fuzzmessagestest=<n>", "Randomly fuzz 1 of every <n> network messages");
-        strUsage += HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", 1));
-        strUsage += HelpMessageOpt("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", 0));
+        strUsage += HelpMessageOpt("-stopafterblockimport", strprintf("Stop running after importing blocks from disk (default: %u)", DEFAULT_STOPAFTERBLOCKIMPORT));
+        strUsage += HelpMessageOpt("-limitancestorcount=<n>", strprintf("Do not accept transactions if number of in-mempool ancestors is <n> or more (default: %u)", DEFAULT_ANCESTOR_LIMIT));
+        strUsage += HelpMessageOpt("-limitancestorsize=<n>", strprintf("Do not accept transactions whose size with all in-mempool ancestors exceeds <n> kilobytes (default: %u)", DEFAULT_ANCESTOR_SIZE_LIMIT));
+        strUsage += HelpMessageOpt("-limitdescendantcount=<n>", strprintf("Do not accept transactions if any ancestor would have <n> or more in-mempool descendants (default: %u)", DEFAULT_DESCENDANT_LIMIT));
+        strUsage += HelpMessageOpt("-limitdescendantsize=<n>", strprintf("Do not accept transactions if any ancestor would have more than <n> kilobytes of in-mempool descendants (default: %u).", DEFAULT_DESCENDANT_SIZE_LIMIT));
+        strUsage += HelpMessageOpt("-bip9params=deployment:start:end", "Use given start/end times for specified BIP9 deployment (regtest-only)");
     }
-    string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net, proxy, prune"; // Don't translate these and qt below
+    std::string debugCategories = "addrman, alert, bench, cmpctblock, coindb, db, http, libevent, lock, mempool, mempoolrej, net, proxy, prune, rand, reindex, rpc, selectcoins, tor, zmq"; // Don't translate these and qt below
     if (mode == HMM_BITCOIN_QT)
         debugCategories += ", qt";
     strUsage += HelpMessageOpt("-debug=<category>", strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + ". " +
-        _("If <category> is not supplied, output all debugging information.") + _("<category> can be:") + " " + debugCategories + ".");
-#ifdef ENABLE_WALLET
-    strUsage += HelpMessageOpt("-gen", strprintf(_("Generate coins (default: %u)"), 0));
-    strUsage += HelpMessageOpt("-genproclimit=<n>", strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), 1));
-#endif
+        _("If <category> is not supplied or if <category> = 1, output all debugging information.") + _("<category> can be:") + " " + debugCategories + ".");
+    if (showDebug)
+        strUsage += HelpMessageOpt("-nodebug", "Turn off debugging messages, same as -debug=0");
     strUsage += HelpMessageOpt("-help-debug", _("Show all debugging options (usage: --help -help-debug)"));
-    strUsage += HelpMessageOpt("-logips", strprintf(_("Include IP addresses in debug output (default: %u)"), 0));
-    strUsage += HelpMessageOpt("-logtimestamps", strprintf(_("Prepend debug output with timestamp (default: %u)"), 1));
+    strUsage += HelpMessageOpt("-logips", strprintf(_("Include IP addresses in debug output (default: %u)"), DEFAULT_LOGIPS));
+    strUsage += HelpMessageOpt("-logtimestamps", strprintf(_("Prepend debug output with timestamp (default: %u)"), DEFAULT_LOGTIMESTAMPS));
     if (showDebug)
     {
-        strUsage += HelpMessageOpt("-limitfreerelay=<n>", strprintf("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default: %u)", 15));
-        strUsage += HelpMessageOpt("-relaypriority", strprintf("Require high priority for relaying free or low-fee transactions (default: %u)", 1));
-        strUsage += HelpMessageOpt("-maxsigcachesize=<n>", strprintf("Limit size of signature cache to <n> entries (default: %u)", 50000));
+        strUsage += HelpMessageOpt("-logtimemicros", strprintf("Add microsecond precision to debug timestamps (default: %u)", DEFAULT_LOGTIMEMICROS));
+        strUsage += HelpMessageOpt("-mocktime=<n>", "Replace actual time with <n> seconds since epoch (default: 0)");
+        strUsage += HelpMessageOpt("-limitfreerelay=<n>", strprintf("Continuously rate-limit free transactions to <n>*1000 bytes per minute (default: %u)", DEFAULT_LIMITFREERELAY));
+        strUsage += HelpMessageOpt("-relaypriority", strprintf("Require high priority for relaying free or low-fee transactions (default: %u)", DEFAULT_RELAYPRIORITY));
+        strUsage += HelpMessageOpt("-maxsigcachesize=<n>", strprintf("Limit size of signature cache to <n> MiB (default: %u)", DEFAULT_MAX_SIG_CACHE_SIZE));
+        strUsage += HelpMessageOpt("-maxtipage=<n>", strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)", DEFAULT_MAX_TIP_AGE));
     }
-    strUsage += HelpMessageOpt("-minrelaytxfee=<amt>", strprintf(_("Fees (in DOGE/Kb) smaller than this are considered zero fee for relaying (default: %s)"), FormatMoney(::minRelayTxFee.GetFeePerK())));
+    strUsage += HelpMessageOpt("-minrelaytxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: %s)"),
+        CURRENCY_UNIT, FormatMoney(DEFAULT_MIN_RELAY_TX_FEE)));
+    strUsage += HelpMessageOpt("-maxtxfee=<amt>", strprintf(_("Maximum total fees (in %s) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions (default: %s)"),
+        CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MAXFEE)));
     strUsage += HelpMessageOpt("-printtoconsole", _("Send trace/debug info to console instead of debug.log file"));
     if (showDebug)
     {
-        strUsage += HelpMessageOpt("-printpriority", strprintf("Log transaction priority and fee per kB when mining blocks (default: %u)", 0));
-        strUsage += HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", 1));
-        strUsage += HelpMessageOpt("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. "
-            "This is intended for regression testing tools and app development.");
+        strUsage += HelpMessageOpt("-printpriority", strprintf("Log transaction priority and fee per kB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY));
     }
     strUsage += HelpMessageOpt("-shrinkdebugfile", _("Shrink debug.log file on client startup (default: 1 when no -debug)"));
-    strUsage += HelpMessageOpt("-testnet", _("Use the test network"));
+
+    AppendParamsHelpMessages(strUsage, showDebug);
 
     strUsage += HelpMessageGroup(_("Node relay options:"));
-    strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1));
+    if (showDebug) {
+        strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !Params(CBaseChainParams::TESTNET).RequireStandard()));
+        strUsage += HelpMessageOpt("-incrementalrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to define cost of relay, used for mempool limiting and BIP 125 replacement. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_INCREMENTAL_RELAY_FEE)));
+        strUsage += HelpMessageOpt("-dustrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to defined dust, the value of an output such that it will cost about 1/3 of its value in fees at this fee rate to spend it. (default: %s)", CURRENCY_UNIT, FormatMoney(DUST_RELAY_TX_FEE)));
+    }
+    strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Equivalent bytes per sigop in transactions for relay and mining (default: %u)"), DEFAULT_BYTES_PER_SIGOP));
+    strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), DEFAULT_ACCEPT_DATACARRIER));
     strUsage += HelpMessageOpt("-datacarriersize", strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY));
+    strUsage += HelpMessageOpt("-mempoolreplacement", strprintf(_("Enable transaction replacement in the memory pool (default: %u)"), DEFAULT_ENABLE_REPLACEMENT));
 
     strUsage += HelpMessageGroup(_("Block creation options:"));
-    strUsage += HelpMessageOpt("-blockminsize=<n>", strprintf(_("Set minimum block size in bytes (default: %u)"), 0));
+    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("-blockprioritysize=<n>", strprintf(_("Set maximum size of high-priority/low-fee transactions in bytes (default: %d)"), DEFAULT_BLOCK_PRIORITY_SIZE));
+    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");
 
     strUsage += HelpMessageGroup(_("RPC server options:"));
     strUsage += HelpMessageOpt("-server", _("Accept command line and JSON-RPC commands"));
-    strUsage += HelpMessageOpt("-rest", strprintf(_("Accept public REST requests (default: %u)"), 0));
+    strUsage += HelpMessageOpt("-rest", strprintf(_("Accept public REST requests (default: %u)"), DEFAULT_REST_ENABLE));
     strUsage += HelpMessageOpt("-rpcbind=<addr>", _("Bind to given address to listen for JSON-RPC connections. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces)"));
+    strUsage += HelpMessageOpt("-rpccookiefile=<loc>", _("Location of the auth cookie (default: data dir)"));
     strUsage += HelpMessageOpt("-rpcuser=<user>", _("Username for JSON-RPC connections"));
     strUsage += HelpMessageOpt("-rpcpassword=<pw>", _("Password for JSON-RPC connections"));
-    strUsage += HelpMessageOpt("-rpcport=<port>", strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), 8332, 18332));
+    strUsage += HelpMessageOpt("-rpcauth=<userpw>", _("Username and hashed password for JSON-RPC connections. The field <userpw> comes in the format: <USERNAME>:<SALT>$<HASH>. A canonical python script is included in share/rpcuser. The client then connects normally using the rpcuser=<USERNAME>/rpcpassword=<PASSWORD> pair of arguments. This option can be specified multiple times"));
+    strUsage += HelpMessageOpt("-rpcport=<port>", strprintf(_("Listen for JSON-RPC connections on <port> (default: %u or testnet: %u)"), BaseParams(CBaseChainParams::MAIN).RPCPort(), BaseParams(CBaseChainParams::TESTNET).RPCPort()));
     strUsage += HelpMessageOpt("-rpcallowip=<ip>", _("Allow JSON-RPC connections from specified source. Valid for <ip> are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times"));
-    strUsage += HelpMessageOpt("-rpcthreads=<n>", strprintf(_("Set the number of threads to service RPC calls (default: %d)"), 4));
-    strUsage += HelpMessageOpt("-rpckeepalive", strprintf(_("RPC support for HTTP persistent connections (default: %d)"), 1));
-
-    strUsage += HelpMessageGroup(_("RPC SSL options: (see the Bitcoin Wiki for SSL setup instructions)"));
-    strUsage += HelpMessageOpt("-rpcssl", _("Use OpenSSL (https) for JSON-RPC connections"));
-    strUsage += HelpMessageOpt("-rpcsslcertificatechainfile=<file.cert>", strprintf(_("Server certificate file (default: %s)"), "server.cert"));
-    strUsage += HelpMessageOpt("-rpcsslprivatekeyfile=<file.pem>", strprintf(_("Server private key (default: %s)"), "server.pem"));
-    strUsage += HelpMessageOpt("-rpcsslciphers=<ciphers>", strprintf(_("Acceptable ciphers (default: %s)"), "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH"));
-
-    if (mode == HMM_BITCOIN_QT)
-    {
-        strUsage += HelpMessageGroup(_("UI Options:"));
-        if (showDebug) {
-            strUsage += HelpMessageOpt("-allowselfsignedrootcertificates", "Allow self signed root certificates (default: 0)");
-        }
-        strUsage += HelpMessageOpt("-choosedatadir", _("Choose data directory on startup (default: 0)"));
-        strUsage += HelpMessageOpt("-lang=<lang>", _("Set language, for example \"de_DE\" (default: system locale)"));
-        strUsage += HelpMessageOpt("-min", _("Start minimized"));
-        strUsage += HelpMessageOpt("-rootcertificates=<file>", _("Set SSL root certificates for payment request (default: -system-)"));
-        strUsage += HelpMessageOpt("-splash", _("Show splash screen on startup (default: 1)"));
-        if (showDebug) {
-            strUsage += HelpMessageOpt("-uiplatform", "Select platform to customize UI for (one of windows, macosx, other; default: platform compiled on)");
-        }
+    strUsage += HelpMessageOpt("-rpcthreads=<n>", strprintf(_("Set the number of threads to service RPC calls (default: %d)"), DEFAULT_HTTP_THREADS));
+    if (showDebug) {
+        strUsage += HelpMessageOpt("-rpcworkqueue=<n>", strprintf("Set the depth of the work queue to service RPC calls (default: %d)", DEFAULT_HTTP_WORKQUEUE));
+        strUsage += HelpMessageOpt("-rpcservertimeout=<n>", strprintf("Timeout during HTTP requests (default: %d)", DEFAULT_HTTP_SERVER_TIMEOUT));
     }
 
     return strUsage;
@@ -449,27 +509,53 @@ std::string HelpMessage(HelpMessageMode mode)
 
 std::string LicenseInfo()
 {
-    return FormatParagraph(strprintf(_("Copyright (C) 2009-%i The Bitcoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
+    const std::string URL_SOURCE_CODE = "<https://github.com/dogecoin/dogecoin>";
+    const std::string URL_WEBSITE = "<https://dogecoin.com>";
+
+    return CopyrightHolders(strprintf(_("Copyright (C) %i-%i"), 2013, COPYRIGHT_YEAR) + " ") + "\n" +
+           "\n" +
+           strprintf(_("Please contribute if you find %s useful. "
+                       "Visit %s for further information about the software."),
+               PACKAGE_NAME, URL_WEBSITE) +
            "\n" +
-           FormatParagraph(strprintf(_("Copyright (C) 2013-%i The Dogecoin Core Developers"), COPYRIGHT_YEAR)) + "\n" +
+           strprintf(_("The source code is available from %s."),
+               URL_SOURCE_CODE) +
            "\n" +
-           FormatParagraph(_("This is experimental software.")) + "\n" +
            "\n" +
-           FormatParagraph(_("Distributed under the MIT software license, see the accompanying file COPYING or <http://www.opensource.org/licenses/mit-license.php>.")) + "\n" +
+           _("This is experimental software.") + "\n" +
+           strprintf(_("Distributed under the MIT software license, see the accompanying file %s or %s"), "COPYING", "<https://opensource.org/licenses/MIT>") + "\n" +
            "\n" +
-           FormatParagraph(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit <https://www.openssl.org/> and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard. Paper wallet art provided by Anacoluthia.")) +
+           strprintf(_("This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit %s and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard. Paper wallet art provided by Anacoluthia."), "<https://www.openssl.org>") +
            "\n";
 }
 
-static void BlockNotifyCallback(const uint256& hashNewTip, const int nHeight)
+static void BlockNotifyCallback(bool initialSync, const CBlockIndex *pBlockIndex)
 {
+    if (initialSync || !pBlockIndex)
+        return;
+
     std::string strCmd = GetArg("-blocknotify", "");
 
-    boost::replace_all(strCmd, "%s", hashNewTip.GetHex());
-    boost::replace_all(strCmd, "%i", boost::lexical_cast<std::string>(chainActive.Height()));
+    boost::replace_all(strCmd, "%s", pBlockIndex->GetBlockHash().GetHex());
+    boost::replace_all(strCmd, "%i", boost::lexical_cast<std::string>(pBlockIndex->nHeight));
     boost::thread t(runCommand, strCmd); // thread runs free
 }
 
+static bool fHaveGenesis = false;
+static boost::mutex cs_GenesisWait;
+static CConditionVariable condvar_GenesisWait;
+
+static void BlockNotifyGenesisWait(bool, const CBlockIndex *pBlockIndex)
+{
+    if (pBlockIndex != NULL) {
+        {
+            boost::unique_lock<boost::mutex> lock_GenesisWait(cs_GenesisWait);
+            fHaveGenesis = true;
+        }
+        condvar_GenesisWait.notify_all();
+    }
+}
+
 struct CImportingNow
 {
     CImportingNow() {
@@ -492,15 +578,14 @@ struct CImportingNow
 // works correctly.
 void CleanupBlockRevFiles()
 {
-    using namespace boost::filesystem;
-    map<string, path> mapBlockFiles;
+    std::map<std::string, boost::filesystem::path> mapBlockFiles;
 
     // Glob all blk?????.dat and rev?????.dat files from the blocks directory.
     // Remove the rev files immediately and insert the blk file paths into an
     // ordered map keyed by block file index.
     LogPrintf("Removing unusable blk?????.dat and rev?????.dat files for -reindex with -prune\n");
-    path blocksdir = GetDataDir() / "blocks";
-    for (directory_iterator it(blocksdir); it != directory_iterator(); it++) {
+    boost::filesystem::path blocksdir = GetDataDir() / "blocks";
+    for (boost::filesystem::directory_iterator it(blocksdir); it != boost::filesystem::directory_iterator(); it++) {
         if (is_regular_file(*it) &&
             it->path().filename().string().length() == 12 &&
             it->path().filename().string().substr(8,4) == ".dat")
@@ -517,7 +602,7 @@ void CleanupBlockRevFiles()
     // keeping a separate counter.  Once we hit a gap (or if 0 doesn't exist)
     // start removing block files.
     int nContigCounter = 0;
-    BOOST_FOREACH(const PAIRTYPE(string, path)& item, mapBlockFiles) {
+    BOOST_FOREACH(const PAIRTYPE(std::string, boost::filesystem::path)& item, mapBlockFiles) {
         if (atoi(item.first) == nContigCounter) {
             nContigCounter++;
             continue;
@@ -528,10 +613,14 @@ void CleanupBlockRevFiles()
 
 void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
 {
+    const CChainParams& chainparams = Params();
     RenameThread("dogecoin-loadblk");
+
+    {
+    CImportingNow imp;
+
     // -reindex
     if (fReindex) {
-        CImportingNow imp;
         int nFile = 0;
         while (true) {
             CDiskBlockPos pos(nFile, 0);
@@ -541,14 +630,14 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
             if (!file)
                 break; // This error is logged in OpenBlockFile
             LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
-            LoadExternalBlockFile(file, &pos);
+            LoadExternalBlockFile(chainparams, file, &pos);
             nFile++;
         }
         pblocktree->WriteReindexing(false);
         fReindex = false;
         LogPrintf("Reindexing finished\n");
         // To avoid ending up in a situation without genesis block, re-try initializing (no-op if reindexing worked):
-        InitBlockIndex();
+        InitBlockIndex(chainparams);
     }
 
     // hardcoded $DATADIR/bootstrap.dat
@@ -556,10 +645,9 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
     if (boost::filesystem::exists(pathBootstrap)) {
         FILE *file = fopen(pathBootstrap.string().c_str(), "rb");
         if (file) {
-            CImportingNow imp;
             boost::filesystem::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
             LogPrintf("Importing bootstrap.dat...\n");
-            LoadExternalBlockFile(file);
+            LoadExternalBlockFile(chainparams, file);
             RenameOver(pathBootstrap, pathBootstrapOld);
         } else {
             LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());
@@ -567,21 +655,30 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
     }
 
     // -loadblock=
-    BOOST_FOREACH(boost::filesystem::path &path, vImportFiles) {
+    BOOST_FOREACH(const boost::filesystem::path& path, vImportFiles) {
         FILE *file = fopen(path.string().c_str(), "rb");
         if (file) {
-            CImportingNow imp;
             LogPrintf("Importing blocks file %s...\n", path.string());
-            LoadExternalBlockFile(file);
+            LoadExternalBlockFile(chainparams, file);
         } else {
             LogPrintf("Warning: Could not open blocks file %s\n", path.string());
         }
     }
 
-    if (GetBoolArg("-stopafterblockimport", false)) {
+    // scan for better chains in the block chain database, that are not yet connected in the active best chain
+    CValidationState state;
+    if (!ActivateBestChain(state, chainparams)) {
+        LogPrintf("Failed to connect best block");
+        StartShutdown();
+    }
+
+    if (GetBoolArg("-stopafterblockimport", DEFAULT_STOPAFTERBLOCKIMPORT)) {
         LogPrintf("Stopping after block import\n");
         StartShutdown();
     }
+    } // End scope of CImportingNow
+    LoadMempool();
+    fDumpMempoolLater = !fRequestShutdown;
 }
 
 /** Sanity checks
@@ -591,8 +688,7 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
 bool InitSanityCheck(void)
 {
     if(!ECC_InitSanityCheck()) {
-        InitError("OpenSSL appears to lack support for elliptic curve cryptography. For more "
-                  "information, visit https://en.bitcoin.it/wiki/OpenSSL_and_EC_Libraries");
+        InitError("Elliptic curve cryptography sanity check failure. Aborting.");
         return false;
     }
     if (!glibc_sanity_test() || !glibcxx_sanity_test())
@@ -601,10 +697,128 @@ bool InitSanityCheck(void)
     return true;
 }
 
-/** Initialize bitcoin.
- *  @pre Parameters should be parsed and config file should be read.
- */
-bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
+bool AppInitServers(boost::thread_group& threadGroup)
+{
+    RPCServer::OnStarted(&OnRPCStarted);
+    RPCServer::OnStopped(&OnRPCStopped);
+    RPCServer::OnPreCommand(&OnRPCPreCommand);
+    if (!InitHTTPServer())
+        return false;
+    if (!StartRPC())
+        return false;
+    if (!StartHTTPRPC())
+        return false;
+    if (GetBoolArg("-rest", DEFAULT_REST_ENABLE) && !StartREST())
+        return false;
+    if (!StartHTTPServer())
+        return false;
+    return true;
+}
+
+// Parameter interaction based on rules
+void InitParameterInteraction()
+{
+    // when specifying an explicit binding address, you want to listen on it
+    // even when -connect or -proxy is specified
+    if (IsArgSet("-bind")) {
+        if (SoftSetBoolArg("-listen", true))
+            LogPrintf("%s: parameter interaction: -bind set -> setting -listen=1\n", __func__);
+    }
+    if (IsArgSet("-whitebind")) {
+        if (SoftSetBoolArg("-listen", true))
+            LogPrintf("%s: parameter interaction: -whitebind set -> setting -listen=1\n", __func__);
+    }
+
+    if (mapMultiArgs.count("-connect") && mapMultiArgs.at("-connect").size() > 0) {
+        // when only connecting to trusted nodes, do not seed via DNS, or listen by default
+        if (SoftSetBoolArg("-dnsseed", false))
+            LogPrintf("%s: parameter interaction: -connect set -> setting -dnsseed=0\n", __func__);
+        if (SoftSetBoolArg("-listen", false))
+            LogPrintf("%s: parameter interaction: -connect set -> setting -listen=0\n", __func__);
+    }
+
+    if (IsArgSet("-proxy")) {
+        // to protect privacy, do not listen by default if a default proxy server is specified
+        if (SoftSetBoolArg("-listen", false))
+            LogPrintf("%s: parameter interaction: -proxy set -> setting -listen=0\n", __func__);
+        // to protect privacy, do not use UPNP when a proxy is set. The user may still specify -listen=1
+        // to listen locally, so don't rely on this happening through -listen below.
+        if (SoftSetBoolArg("-upnp", false))
+            LogPrintf("%s: parameter interaction: -proxy set -> setting -upnp=0\n", __func__);
+        // to protect privacy, do not discover addresses by default
+        if (SoftSetBoolArg("-discover", false))
+            LogPrintf("%s: parameter interaction: -proxy set -> setting -discover=0\n", __func__);
+    }
+
+    if (!GetBoolArg("-listen", DEFAULT_LISTEN)) {
+        // do not map ports or try to retrieve public IP when not listening (pointless)
+        if (SoftSetBoolArg("-upnp", false))
+            LogPrintf("%s: parameter interaction: -listen=0 -> setting -upnp=0\n", __func__);
+        if (SoftSetBoolArg("-discover", false))
+            LogPrintf("%s: parameter interaction: -listen=0 -> setting -discover=0\n", __func__);
+        if (SoftSetBoolArg("-listenonion", false))
+            LogPrintf("%s: parameter interaction: -listen=0 -> setting -listenonion=0\n", __func__);
+    }
+
+    if (IsArgSet("-externalip")) {
+        // if an explicit public IP is specified, do not try to find others
+        if (SoftSetBoolArg("-discover", false))
+            LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);
+    }
+
+    // disable whitelistrelay in blocksonly mode
+    if (GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY)) {
+        if (SoftSetBoolArg("-whitelistrelay", false))
+            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -whitelistrelay=0\n", __func__);
+    }
+
+    // Forcing relay from whitelisted hosts implies we will accept relays from them in the first place.
+    if (GetBoolArg("-whitelistforcerelay", DEFAULT_WHITELISTFORCERELAY)) {
+        if (SoftSetBoolArg("-whitelistrelay", true))
+            LogPrintf("%s: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1\n", __func__);
+    }
+}
+
+static std::string ResolveErrMsg(const char * const optname, const std::string& strBind)
+{
+    return strprintf(_("Cannot resolve -%s address: '%s'"), optname, strBind);
+}
+
+void InitLogging()
+{
+    fPrintToConsole = GetBoolArg("-printtoconsole", false);
+    fLogTimestamps = GetBoolArg("-logtimestamps", DEFAULT_LOGTIMESTAMPS);
+    fLogTimeMicros = GetBoolArg("-logtimemicros", DEFAULT_LOGTIMEMICROS);
+    fLogIPs = GetBoolArg("-logips", DEFAULT_LOGIPS);
+
+    LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
+    LogPrintf("Dogecoin version %s\n", FormatFullVersion());
+}
+
+namespace { // Variables internal to initialization process only
+
+ServiceFlags nRelevantServices = NODE_NETWORK;
+int nMaxConnections;
+int nUserMaxConnections;
+int nFD;
+ServiceFlags nLocalServices = NODE_NETWORK;
+
+}
+
+[[noreturn]] static void new_handler_terminate()
+{
+    // Rather than throwing std::bad-alloc if allocation fails, terminate
+    // immediately to (try to) avoid chain corruption.
+    // Since LogPrintf may itself allocate memory, set the handler directly
+    // to terminate first.
+    std::set_new_handler(std::terminate);
+    LogPrintf("Error: Out of memory. Terminating.\n");
+
+    // The log was successful, terminate now.
+    std::terminate();
+};
+
+bool AppInitBasicSetup()
 {
     // ********************************************************* Step 1: setup
 #ifdef _MSC_VER
@@ -628,23 +842,13 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     typedef BOOL (WINAPI *PSETPROCDEPPOL)(DWORD);
     PSETPROCDEPPOL setProcDEPPol = (PSETPROCDEPPOL)GetProcAddress(GetModuleHandleA("Kernel32.dll"), "SetProcessDEPPolicy");
     if (setProcDEPPol != NULL) setProcDEPPol(PROCESS_DEP_ENABLE);
-
-    // Initialize Windows Sockets
-    WSADATA wsadata;
-    int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
-    if (ret != NO_ERROR || LOBYTE(wsadata.wVersion ) != 2 || HIBYTE(wsadata.wVersion) != 2)
-    {
-        return InitError(strprintf("Error: Winsock library failed to start (WSAStartup returned error %d)", ret));
-    }
 #endif
-#ifndef WIN32
 
-    if (GetBoolArg("-sysperms", false)) {
-#ifdef ENABLE_WALLET
-        if (!GetBoolArg("-disablewallet", false))
-            return InitError("Error: -sysperms is not allowed in combination with enabled wallet functionality");
-#endif
-    } else {
+    if (!SetupNetworking())
+        return InitError("Initializing networking failed");
+
+#ifndef WIN32
+    if (!GetBoolArg("-sysperms", false)) {
         umask(077);
     }
 
@@ -663,161 +867,133 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     sa_hup.sa_flags = 0;
     sigaction(SIGHUP, &sa_hup, NULL);
 
-#if defined (__SVR4) && defined (__sun)
-    // ignore SIGPIPE on Solaris
+    // Ignore SIGPIPE, otherwise it will bring the daemon down if the client closes unexpectedly
     signal(SIGPIPE, SIG_IGN);
 #endif
-#endif
 
-    // ********************************************************* Step 2: parameter interactions
-    const CChainParams& chainparams = Params();
-
-    // Set this early so that parameter interactions go to console
-    fPrintToConsole = GetBoolArg("-printtoconsole", false);
-    fLogTimestamps = GetBoolArg("-logtimestamps", true);
-    fLogIPs = GetBoolArg("-logips", false);
-
-    fBloomFilters = GetBoolArg("-bloomfilters", true);
-    if (fBloomFilters) {
-        nLocalServices |= NODE_BLOOM;
-    }
-
-    // when specifying an explicit binding address, you want to listen on it
-    // even when -connect or -proxy is specified
-    if (mapArgs.count("-bind")) {
-        if (SoftSetBoolArg("-listen", true))
-            LogPrintf("%s: parameter interaction: -bind set -> setting -listen=1\n", __func__);
-    }
-    if (mapArgs.count("-whitebind")) {
-        if (SoftSetBoolArg("-listen", true))
-            LogPrintf("%s: parameter interaction: -whitebind set -> setting -listen=1\n", __func__);
-    }
-
-    if (mapArgs.count("-connect") && mapMultiArgs["-connect"].size() > 0) {
-        // when only connecting to trusted nodes, do not seed via DNS, or listen by default
-        if (SoftSetBoolArg("-dnsseed", false))
-            LogPrintf("%s: parameter interaction: -connect set -> setting -dnsseed=0\n", __func__);
-        if (SoftSetBoolArg("-listen", false))
-            LogPrintf("%s: parameter interaction: -connect set -> setting -listen=0\n", __func__);
-    }
-
-    if (mapArgs.count("-proxy")) {
-        // to protect privacy, do not listen by default if a default proxy server is specified
-        if (SoftSetBoolArg("-listen", false))
-            LogPrintf("%s: parameter interaction: -proxy set -> setting -listen=0\n", __func__);
-        // to protect privacy, do not use UPNP when a proxy is set. The user may still specify -listen=1
-        // to listen locally, so don't rely on this happening through -listen below.
-        if (SoftSetBoolArg("-upnp", false))
-            LogPrintf("%s: parameter interaction: -proxy set -> setting -upnp=0\n", __func__);
-        // to protect privacy, do not discover addresses by default
-        if (SoftSetBoolArg("-discover", false))
-            LogPrintf("%s: parameter interaction: -proxy set -> setting -discover=0\n", __func__);
-    }
+    std::set_new_handler(new_handler_terminate);
 
-    if (!GetBoolArg("-listen", DEFAULT_LISTEN)) {
-        // do not map ports or try to retrieve public IP when not listening (pointless)
-        if (SoftSetBoolArg("-upnp", false))
-            LogPrintf("%s: parameter interaction: -listen=0 -> setting -upnp=0\n", __func__);
-        if (SoftSetBoolArg("-discover", false))
-            LogPrintf("%s: parameter interaction: -listen=0 -> setting -discover=0\n", __func__);
-    }
+    return true;
+}
 
-    if (mapArgs.count("-externalip")) {
-        // if an explicit public IP is specified, do not try to find others
-        if (SoftSetBoolArg("-discover", false))
-            LogPrintf("%s: parameter interaction: -externalip set -> setting -discover=0\n", __func__);
-    }
+bool AppInitParameterInteraction()
+{
+    const CChainParams& chainparams = Params();
+    // ********************************************************* Step 2: parameter interactions
 
-    if (GetBoolArg("-salvagewallet", false)) {
-        // Rewrite just private keys: rescan to find transactions
-        if (SoftSetBoolArg("-rescan", true))
-            LogPrintf("%s: parameter interaction: -salvagewallet=1 -> setting -rescan=1\n", __func__);
-    }
+    // also see: InitParameterInteraction()
 
-    // -zapwallettx implies a rescan
-    if (GetBoolArg("-zapwallettxes", false)) {
-        if (SoftSetBoolArg("-rescan", true))
-            LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);
+    // if using block pruning, then disallow txindex
+    if (GetArg("-prune", 0)) {
+        if (GetBoolArg("-txindex", DEFAULT_TXINDEX))
+            return InitError(_("Prune mode is incompatible with -txindex."));
     }
 
     // Make sure enough file descriptors are available
-    int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);
-    nMaxConnections = GetArg("-maxconnections", 125);
-    nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS)), 0);
-    int nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS);
+    int nBind = std::max(
+                (mapMultiArgs.count("-bind") ? mapMultiArgs.at("-bind").size() : 0) +
+                (mapMultiArgs.count("-whitebind") ? mapMultiArgs.at("-whitebind").size() : 0), size_t(1));
+    nUserMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
+    nMaxConnections = std::max(nUserMaxConnections, 0);
+
+    // Trim requested connection counts, to fit into system limitations
+    nMaxConnections = std::max(std::min(nMaxConnections, (int)(FD_SETSIZE - nBind - MIN_CORE_FILEDESCRIPTORS - MAX_ADDNODE_CONNECTIONS)), 0);
+    nFD = RaiseFileDescriptorLimit(nMaxConnections + MIN_CORE_FILEDESCRIPTORS + MAX_ADDNODE_CONNECTIONS);
     if (nFD < MIN_CORE_FILEDESCRIPTORS)
         return InitError(_("Not enough file descriptors available."));
-    if (nFD - MIN_CORE_FILEDESCRIPTORS < nMaxConnections)
-        nMaxConnections = nFD - MIN_CORE_FILEDESCRIPTORS;
+    nMaxConnections = std::min(nFD - MIN_CORE_FILEDESCRIPTORS - MAX_ADDNODE_CONNECTIONS, nMaxConnections);
 
-    // if using block pruning, then disable txindex
-    // also disable the wallet (for now, until SPV support is implemented in wallet)
-    if (GetArg("-prune", 0)) {
-        if (GetBoolArg("-txindex", false))
-            return InitError(_("Prune mode is incompatible with -txindex."));
-#ifdef ENABLE_WALLET
-        if (!GetBoolArg("-disablewallet", false)) {
-            if (SoftSetBoolArg("-disablewallet", true))
-                LogPrintf("%s : parameter interaction: -prune -> setting -disablewallet=1\n", __func__);
-            else
-                return InitError(_("Can't run with a wallet in prune mode."));
-        }
-#endif
-    }
+    if (nMaxConnections < nUserMaxConnections)
+        InitWarning(strprintf(_("Reducing -maxconnections from %d to %d, because of system limitations."), nUserMaxConnections, nMaxConnections));
 
     // ********************************************************* Step 3: parameter-to-internal-flags
 
-    fDebug = !mapMultiArgs["-debug"].empty();
+    fDebug = mapMultiArgs.count("-debug");
     // Special-case: if -debug=0/-nodebug is set, turn off debugging messages
-    const vector<string>& categories = mapMultiArgs["-debug"];
-    if (GetBoolArg("-nodebug", false) || find(categories.begin(), categories.end(), string("0")) != categories.end())
-        fDebug = false;
+    if (fDebug) {
+        const std::vector<std::string>& categories = mapMultiArgs.at("-debug");
+        if (GetBoolArg("-nodebug", false) || find(categories.begin(), categories.end(), std::string("0")) != categories.end())
+            fDebug = false;
+    }
 
     // Check for -debugnet
     if (GetBoolArg("-debugnet", false))
-        InitWarning(_("Warning: Unsupported argument -debugnet ignored, use -debug=net."));
+        InitWarning(_("Unsupported argument -debugnet ignored, use -debug=net."));
     // Check for -socks - as this is a privacy risk to continue, exit here
-    if (mapArgs.count("-socks"))
-        return InitError(_("Error: Unsupported argument -socks found. Setting SOCKS version isn't possible anymore, only SOCKS5 proxies are supported."));
+    if (IsArgSet("-socks"))
+        return InitError(_("Unsupported argument -socks found. Setting SOCKS version isn't possible anymore, only SOCKS5 proxies are supported."));
     // Check for -tor - as this is a privacy risk to continue, exit here
     if (GetBoolArg("-tor", false))
-        return InitError(_("Error: Unsupported argument -tor found, use -onion."));
+        return InitError(_("Unsupported argument -tor found, use -onion."));
 
     if (GetBoolArg("-benchmark", false))
-        InitWarning(_("Warning: Unsupported argument -benchmark ignored, use -debug=bench."));
+        InitWarning(_("Unsupported argument -benchmark ignored, use -debug=bench."));
+
+    if (GetBoolArg("-whitelistalwaysrelay", false))
+        InitWarning(_("Unsupported argument -whitelistalwaysrelay ignored, use -whitelistrelay and/or -whitelistforcerelay."));
+
+    if (IsArgSet("-blockminsize"))
+        InitWarning("Unsupported argument -blockminsize ignored.");
 
     // Checkmempool and checkblockindex default to true in regtest mode
-    mempool.setSanityCheck(GetBoolArg("-checkmempool", chainparams.DefaultConsistencyChecks()));
+    int ratio = std::min<int>(std::max<int>(GetArg("-checkmempool", chainparams.DefaultConsistencyChecks() ? 1 : 0), 0), 1000000);
+    if (ratio != 0) {
+        mempool.setSanityCheck(1.0 / ratio);
+    }
     fCheckBlockIndex = GetBoolArg("-checkblockindex", chainparams.DefaultConsistencyChecks());
-    fCheckpointsEnabled = GetBoolArg("-checkpoints", true);
+    fCheckpointsEnabled = GetBoolArg("-checkpoints", DEFAULT_CHECKPOINTS_ENABLED);
+
+    hashAssumeValid = uint256S(GetArg("-assumevalid", chainparams.GetConsensus(0).defaultAssumeValid.GetHex()));
+    if (!hashAssumeValid.IsNull())
+        LogPrintf("Assuming ancestors of block %s have valid signatures.\n", hashAssumeValid.GetHex());
+    else
+        LogPrintf("Validating signatures for all blocks.\n");
+
+    // mempool limits
+    int64_t nMempoolSizeMax = GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
+    int64_t nMempoolSizeMin = GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000 * 40;
+    if (nMempoolSizeMax < 0 || nMempoolSizeMax < nMempoolSizeMin)
+        return InitError(strprintf(_("-maxmempool must be at least %d MB"), std::ceil(nMempoolSizeMin / 1000000.0)));
+    // incremental relay fee sets the minimimum feerate increase necessary for BIP 125 replacement in the mempool
+    // and the amount the mempool min fee increases above the feerate of txs evicted due to mempool limiting.
+    if (IsArgSet("-incrementalrelayfee"))
+    {
+        CAmount n = 0;
+        if (!ParseMoney(GetArg("-incrementalrelayfee", ""), n))
+            return InitError(AmountErrMsg("incrementalrelayfee", GetArg("-incrementalrelayfee", "")));
+        incrementalRelayFee = CFeeRate(n);
+    }
 
     // -par=0 means autodetect, but nScriptCheckThreads==0 means no concurrency
     nScriptCheckThreads = GetArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
     if (nScriptCheckThreads <= 0)
-        nScriptCheckThreads += boost::thread::hardware_concurrency();
+        nScriptCheckThreads += GetNumCores();
     if (nScriptCheckThreads <= 1)
         nScriptCheckThreads = 0;
     else if (nScriptCheckThreads > MAX_SCRIPTCHECK_THREADS)
         nScriptCheckThreads = MAX_SCRIPTCHECK_THREADS;
 
-    fServer = GetBoolArg("-server", false);
-
-    // block pruning; get the amount of disk space (in MB) to allot for block & undo files
-    int64_t nSignedPruneTarget = GetArg("-prune", 0) * 1024 * 1024;
-    if (nSignedPruneTarget < 0) {
+    // block pruning; get the amount of disk space (in MiB) to allot for block & undo files
+    int64_t nPruneArg = GetArg("-prune", 0);
+    if (nPruneArg < 0) {
         return InitError(_("Prune cannot be configured with a negative value."));
     }
-    nPruneTarget = (uint64_t) nSignedPruneTarget;
-    if (nPruneTarget) {
+    nPruneTarget = (uint64_t) nPruneArg * 1024 * 1024;
+    if (nPruneArg == 1) {  // manual pruning: -prune=1
+        LogPrintf("Block pruning enabled.  Use RPC call pruneblockchain(height) to manually prune block and undo files.\n");
+        nPruneTarget = std::numeric_limits<uint64_t>::max();
+        fPruneMode = true;
+    } else if (nPruneTarget) {
         if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) {
-            return InitError(strprintf(_("Prune configured below the minimum of %d MB.  Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
+            return InitError(strprintf(_("Prune configured below the minimum of %d MiB.  Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024));
         }
         LogPrintf("Prune configured to target %uMiB on disk for block and undo files.\n", nPruneTarget / 1024 / 1024);
         fPruneMode = true;
     }
 
+    RegisterAllCoreRPCCommands(tableRPC);
 #ifdef ENABLE_WALLET
-    bool fDisableWallet = GetBoolArg("-disablewallet", false);
+    RegisterWalletRPCCommands(tableRPC);
 #endif
 
     nConnectTimeout = GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
@@ -830,82 +1006,118 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     // a transaction spammer can cheaply fill blocks using
     // 1-satoshi-fee transactions. It should be set above the real
     // cost to you of processing a transaction.
-    if (mapArgs.count("-minrelaytxfee"))
+    if (IsArgSet("-minrelaytxfee"))
     {
         CAmount n = 0;
-        if (ParseMoney(mapArgs["-minrelaytxfee"], n) && n > 0)
-            ::minRelayTxFee = CFeeRate(n);
-        else
-            return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"]));
+        if (!ParseMoney(GetArg("-minrelaytxfee", ""), n) || 0 == n)
+            return InitError(AmountErrMsg("minrelaytxfee", GetArg("-minrelaytxfee", "")));
+        // High fee check is done afterward in CWallet::ParameterInteraction()
+        ::minRelayTxFee = CFeeRate(n);
+    } else if (incrementalRelayFee > ::minRelayTxFee) {
+        // Allow only setting incrementalRelayFee to control both
+        ::minRelayTxFee = incrementalRelayFee;
+        LogPrintf("Increasing minrelaytxfee to %s to match incrementalrelayfee\n",::minRelayTxFee.ToString());
     }
 
-#ifdef ENABLE_WALLET
-    if (mapArgs.count("-mintxfee"))
+    // Sanity check argument for min fee for including tx in block
+    // TODO: Harmonize which arguments need sanity checking and where that happens
+    if (IsArgSet("-blockmintxfee"))
     {
         CAmount n = 0;
-        if (ParseMoney(mapArgs["-mintxfee"], n) && n > 0)
-            CWallet::minTxFee = CFeeRate(n);
-        else
-            return InitError(strprintf(_("Invalid amount for -mintxfee=<amount>: '%s'"), mapArgs["-mintxfee"]));
+        if (!ParseMoney(GetArg("-blockmintxfee", ""), n))
+            return InitError(AmountErrMsg("blockmintxfee", GetArg("-blockmintxfee", "")));
     }
-    if (mapArgs.count("-paytxfee"))
-    {
-        CAmount nFeePerK = 0;
-        if (!ParseMoney(mapArgs["-paytxfee"], nFeePerK))
-            return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s'"), mapArgs["-paytxfee"]));
-        if (nFeePerK > nHighTransactionFeeWarning)
-            InitWarning(_("Warning: -paytxfee is set very high! This is the transaction fee you will pay if you send a transaction."));
-        payTxFee = CFeeRate(nFeePerK, 1000);
-        if (payTxFee < ::minRelayTxFee)
-        {
-            return InitError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
-                                       mapArgs["-paytxfee"], ::minRelayTxFee.ToString()));
-        }
-    }
-    if (mapArgs.count("-maxtxfee"))
+
+    // Feerate used to define dust.  Shouldn't be changed lightly as old
+    // implementations may inadvertently create non-standard transactions
+    if (IsArgSet("-dustrelayfee"))
     {
-        CAmount nMaxFee = 0;
-        if (!ParseMoney(mapArgs["-maxtxfee"], nMaxFee))
-            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s'"), mapArgs["-maptxfee"]));
-        if (nMaxFee > nHighTransactionMaxFeeWarning)
-            InitWarning(_("Warning: -maxtxfee is set very high! Fees this large could be paid on a single transaction."));
-        maxTxFee = nMaxFee;
-        if (CFeeRate(maxTxFee, 1000) < ::minRelayTxFee)
-        {
-            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
-                                       mapArgs["-maxtxfee"], ::minRelayTxFee.ToString()));
-        }
+        CAmount n = 0;
+        if (!ParseMoney(GetArg("-dustrelayfee", ""), n) || 0 == n)
+            return InitError(AmountErrMsg("dustrelayfee", GetArg("-dustrelayfee", "")));
+        dustRelayFee = CFeeRate(n);
     }
 
-    // Dogecoin: Disable txconfirmtarget
-    // nTxConfirmTarget = GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
-    nTxConfirmTarget = DEFAULT_TX_CONFIRM_TARGET;
-    bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", true);
-    fSendFreeTransactions = GetBoolArg("-sendfreetransactions", false);
+    fRequireStandard = !GetBoolArg("-acceptnonstdtxn", !chainparams.RequireStandard());
+    if (chainparams.RequireStandard() && !fRequireStandard)
+        return InitError(strprintf("acceptnonstdtxn is not currently supported for %s chain", chainparams.NetworkIDString()));
+    nBytesPerSigOp = GetArg("-bytespersigop", nBytesPerSigOp);
 
-    std::string strWalletFile = GetArg("-wallet", "wallet.dat");
-#endif // ENABLE_WALLET
+#ifdef ENABLE_WALLET
+    if (!CWallet::ParameterInteraction())
+        return false;
+#endif
 
-    fIsBareMultisigStd = GetBoolArg("-permitbaremultisig", true);
+    fIsBareMultisigStd = GetBoolArg("-permitbaremultisig", DEFAULT_PERMIT_BAREMULTISIG);
+    fAcceptDatacarrier = GetBoolArg("-datacarrier", DEFAULT_ACCEPT_DATACARRIER);
     nMaxDatacarrierBytes = GetArg("-datacarriersize", nMaxDatacarrierBytes);
 
     fAlerts = GetBoolArg("-alerts", DEFAULT_ALERTS);
 
-    // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
+    // Option to startup with mocktime set (used for regression testing):
+    SetMockTime(GetArg("-mocktime", 0)); // SetMockTime(0) is a no-op
 
-    // Initialize elliptic curve code
-    ECC_Start();
+    if (GetBoolArg("-peerbloomfilters", DEFAULT_PEERBLOOMFILTERS))
+        nLocalServices = ServiceFlags(nLocalServices | NODE_BLOOM);
 
-    // Sanity check
-    if (!InitSanityCheck())
-        return InitError(_("Initialization sanity check failed. Dogecoin Core is shutting down."));
+    if (GetArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) < 0)
+        return InitError("rpcserialversion must be non-negative.");
+
+    if (GetArg("-rpcserialversion", DEFAULT_RPC_SERIALIZE_VERSION) > 1)
+        return InitError("unknown rpcserialversion requested.");
+
+    nMaxTipAge = GetArg("-maxtipage", DEFAULT_MAX_TIP_AGE);
+
+    fEnableReplacement = GetBoolArg("-mempoolreplacement", DEFAULT_ENABLE_REPLACEMENT);
+    if ((!fEnableReplacement) && IsArgSet("-mempoolreplacement")) {
+        // Minimal effort at forwards compatibility
+        std::string strReplacementModeList = GetArg("-mempoolreplacement", "");  // default is impossible
+        std::vector<std::string> vstrReplacementModes;
+        boost::split(vstrReplacementModes, strReplacementModeList, boost::is_any_of(","));
+        fEnableReplacement = (std::find(vstrReplacementModes.begin(), vstrReplacementModes.end(), "fee") != vstrReplacementModes.end());
+    }
+
+    if (mapMultiArgs.count("-bip9params")) {
+        // Allow overriding BIP9 parameters for testing
+        if (!chainparams.MineBlocksOnDemand()) {
+            return InitError("BIP9 parameters may only be overridden on regtest.");
+        }
+        const std::vector<std::string>& deployments = mapMultiArgs.at("-bip9params");
+        for (auto i : deployments) {
+            std::vector<std::string> vDeploymentParams;
+            boost::split(vDeploymentParams, i, boost::is_any_of(":"));
+            if (vDeploymentParams.size() != 3) {
+                return InitError("BIP9 parameters malformed, expecting deployment:start:end");
+            }
+            int64_t nStartTime, nTimeout;
+            if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
+                return InitError(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
+            }
+            if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
+                return InitError(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
+            }
+            bool found = false;
+            for (int j=0; j<(int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j)
+            {
+                if (vDeploymentParams[0].compare(VersionBitsDeploymentInfo[j].name) == 0) {
+                    UpdateRegtestBIP9Parameters(Consensus::DeploymentPos(j), nStartTime, nTimeout);
+                    found = true;
+                    LogPrintf("Setting BIP9 activation parameters for %s to start=%ld, timeout=%ld\n", vDeploymentParams[0], nStartTime, nTimeout);
+                    break;
+                }
+            }
+            if (!found) {
+                return InitError(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
+            }
+        }
+    }
+    return true;
+}
 
+static bool LockDataDirectory(bool probeOnly)
+{
     std::string strDataDir = GetDataDir().string();
-#ifdef ENABLE_WALLET
-    // Wallet file must be a plain filename without a directory
-    if (strWalletFile != boost::filesystem::basename(strWalletFile) + boost::filesystem::extension(strWalletFile))
-        return InitError(strprintf(_("Wallet %s resides outside data directory %s"), strWalletFile, strDataDir));
-#endif
+
     // Make sure only a single Bitcoin process is using the data directory.
     boost::filesystem::path pathLockFile = GetDataDir() / ".lock";
     FILE* file = fopen(pathLockFile.string().c_str(), "a"); // empty lock file; created if it doesn't exist.
@@ -913,30 +1125,66 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     try {
         static boost::interprocess::file_lock lock(pathLockFile.string().c_str());
-        if (!lock.try_lock())
-            return InitError(strprintf(_("Cannot obtain a lock on data directory %s. Dogecoin Core is probably already running."), strDataDir));
+        if (!lock.try_lock()) {
+            return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running."), strDataDir, _(PACKAGE_NAME)));
+        }
+        if (probeOnly) {
+            lock.unlock();
+        }
     } catch(const boost::interprocess::interprocess_exception& e) {
-        return InitError(strprintf(_("Cannot obtain a lock on data directory %s. Dogecoin Core is probably already running.") + " %s.", strDataDir, e.what()));
+        return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running.") + " %s.", strDataDir, _(PACKAGE_NAME), e.what()));
+    }
+    return true;
+}
+
+bool AppInitSanityChecks()
+{
+    // ********************************************************* Step 4: sanity checks
+
+    // Initialize elliptic curve code
+    ECC_Start();
+    globalVerifyHandle.reset(new ECCVerifyHandle());
+
+    // Sanity check
+    if (!InitSanityCheck())
+        return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), _(PACKAGE_NAME)));
+
+    // Probe the data directory lock to give an early error message, if possible
+    return LockDataDirectory(true);
+}
+
+bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
+{
+    const CChainParams& chainparams = Params();
+    // ********************************************************* Step 4a: application initialization
+    // After daemonization get the data directory lock again and hold on to it until exit
+    // This creates a slight window for a race condition to happen, however this condition is harmless: it
+    // will at most make us exit without printing a message to console.
+    if (!LockDataDirectory(false)) {
+        // Detailed error printed inside LockDataDirectory
+        return false;
     }
 
 #ifndef WIN32
     CreatePidFile(GetPidFile(), getpid());
 #endif
-    if (GetBoolArg("-shrinkdebugfile", !fDebug))
+    if (GetBoolArg("-shrinkdebugfile", !fDebug)) {
+        // Do this first since it both loads a bunch of debug.log into memory,
+        // and because this needs to happen before any other debug.log printing
         ShrinkDebugFile();
-    LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Dogecoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
-    LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
-#ifdef ENABLE_WALLET
-    LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
-#endif
+    }
+
+    if (fPrintToDebugLog)
+        OpenDebugLog();
+
     if (!fLogTimestamps)
         LogPrintf("Startup time: %s\n", DateTimeStrFormat("%Y-%m-%d %H:%M:%S", GetTime()));
     LogPrintf("Default data directory %s\n", GetDefaultDataDir().string());
-    LogPrintf("Using data directory %s\n", strDataDir);
-    LogPrintf("Using config file %s\n", GetConfigFile().string());
-    LogPrintf("Using at most %i connections (%i file descriptors available)\n", nMaxConnections, nFD);
-    std::ostringstream strErrors;
+    LogPrintf("Using data directory %s\n", GetDataDir().string());
+    LogPrintf("Using config file %s\n", GetConfigFile(GetArg("-conf", BITCOIN_CONF_FILENAME)).string());
+    LogPrintf("Using at most %i automatic connections (%i file descriptors available)\n", nMaxConnections, nFD);
+
+    InitSignatureCache();
 
     LogPrintf("Using %u threads for script verification\n", nScriptCheckThreads);
     if (nScriptCheckThreads) {
@@ -953,12 +1201,11 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
      * that the server is there and will be ready later).  Warmup mode will
      * be disabled when initialisation is finished.
      */
-    if (fServer)
+    if (GetBoolArg("-server", false))
     {
         uiInterface.InitMessage.connect(SetRPCWarmupStatus);
-        RPCServer::OnStopped(&OnRPCStopped);
-        RPCServer::OnPreCommand(&OnRPCPreCommand);
-        StartRPCThreads();
+        if (!AppInitServers(threadGroup))
+            return InitError(_("Unable to start HTTP server. See debug log for details."));
     }
 
     int64_t nStart;
@@ -969,30 +1216,42 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
     // ********************************************************* Step 5: verify wallet database integrity
 #ifdef ENABLE_WALLET
-    if (!fDisableWallet) {
-        LogPrintf("Using wallet %s\n", strWalletFile);
-        uiInterface.InitMessage(_("Verifying wallet..."));
-
-        std::string warningString;
-        std::string errorString;
-        
-        if (!CWallet::Verify(strWalletFile, warningString, errorString))
-            return false;
-        
-        if (!warningString.empty())
-            InitWarning(warningString);
-        if (!errorString.empty())
-            return InitError(warningString);
-        
-    } // (!fDisableWallet)
-#endif // ENABLE_WALLET
+    if (!CWallet::Verify())
+        return false;
+#endif
     // ********************************************************* Step 6: network initialization
+    // Note that we absolutely cannot open any actual connections
+    // until the very end ("start node") as the UTXO/block state
+    // is not yet setup and may end up being set up twice if we
+    // need to reindex later.
 
+    assert(!g_connman);
+    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));
+    RegisterValidationInterface(peerLogic.get());
     RegisterNodeSignals(GetNodeSignals());
 
-    if (mapArgs.count("-onlynet")) {
+    // sanitize comments per BIP-0014, format user agent and check total size
+    std::vector<std::string> uacomments;
+    if (mapMultiArgs.count("-uacomment")) {
+        BOOST_FOREACH(std::string cmt, mapMultiArgs.at("-uacomment"))
+        {
+            if (cmt != SanitizeString(cmt, SAFE_CHARS_UA_COMMENT))
+                return InitError(strprintf(_("User Agent comment (%s) contains unsafe characters."), cmt));
+            uacomments.push_back(cmt);
+        }
+    }
+    strSubVersion = FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, uacomments);
+    if (strSubVersion.size() > MAX_SUBVERSION_LENGTH) {
+        return InitError(strprintf(_("Total length of network version string (%i) exceeds maximum length (%i). Reduce the number or size of uacomments."),
+            strSubVersion.size(), MAX_SUBVERSION_LENGTH));
+    }
+
+    if (mapMultiArgs.count("-onlynet")) {
         std::set<enum Network> nets;
-        BOOST_FOREACH(std::string snet, mapMultiArgs["-onlynet"]) {
+        BOOST_FOREACH(const std::string& snet, mapMultiArgs.at("-onlynet")) {
             enum Network net = ParseNetwork(snet);
             if (net == NET_UNROUTABLE)
                 return InitError(strprintf(_("Unknown network specified in -onlynet: '%s'"), snet));
@@ -1005,90 +1264,120 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         }
     }
 
-    if (mapArgs.count("-whitelist")) {
-        BOOST_FOREACH(const std::string& net, mapMultiArgs["-whitelist"]) {
-            CSubNet subnet(net);
+    if (mapMultiArgs.count("-whitelist")) {
+        BOOST_FOREACH(const std::string& net, mapMultiArgs.at("-whitelist")) {
+            CSubNet subnet;
+            LookupSubNet(net.c_str(), subnet);
             if (!subnet.IsValid())
                 return InitError(strprintf(_("Invalid netmask specified in -whitelist: '%s'"), net));
-            CNode::AddWhitelistedRange(subnet);
+            connman.AddWhitelistedRange(subnet);
         }
     }
 
-    proxyType addrProxy;
-    bool fProxy = false;
-    if (mapArgs.count("-proxy")) {
-        addrProxy = proxyType(CService(mapArgs["-proxy"], 9050), GetBoolArg("-proxyrandomize", true));
+    bool proxyRandomize = GetBoolArg("-proxyrandomize", DEFAULT_PROXYRANDOMIZE);
+    // -proxy sets a proxy for all outgoing network traffic
+    // -noproxy (or -proxy=0) as well as the empty string can be used to not set a proxy, this is the default
+    std::string proxyArg = GetArg("-proxy", "");
+    SetLimited(NET_TOR);
+    if (proxyArg != "" && proxyArg != "0") {
+        CService resolved(LookupNumeric(proxyArg.c_str(), 9050));
+        proxyType addrProxy = proxyType(resolved, proxyRandomize);
         if (!addrProxy.IsValid())
-            return InitError(strprintf(_("Invalid -proxy address: '%s'"), mapArgs["-proxy"]));
+            return InitError(strprintf(_("Invalid -proxy address: '%s'"), proxyArg));
 
         SetProxy(NET_IPV4, addrProxy);
         SetProxy(NET_IPV6, addrProxy);
+        SetProxy(NET_TOR, addrProxy);
         SetNameProxy(addrProxy);
-        fProxy = true;
+        SetLimited(NET_TOR, false); // by default, -proxy sets onion as reachable, unless -noonion later
     }
 
-    // -onion can override normal proxy, -noonion disables connecting to .onion entirely
-    if (!(mapArgs.count("-onion") && mapArgs["-onion"] == "0") &&
-        (fProxy || mapArgs.count("-onion"))) {
-        proxyType addrOnion;
-        if (!mapArgs.count("-onion"))
-            addrOnion = addrProxy;
-        else
-            addrOnion = proxyType(CService(mapArgs["-onion"], 9050), GetBoolArg("-proxyrandomize", true));
-        if (!addrOnion.IsValid())
-            return InitError(strprintf(_("Invalid -onion address: '%s'"), mapArgs["-onion"]));
-        SetProxy(NET_TOR, addrOnion);
-        SetReachable(NET_TOR);
+    // -onion can be used to set only a proxy for .onion, or override normal proxy for .onion addresses
+    // -noonion (or -onion=0) disables connecting to .onion entirely
+    // An empty string is used to not override the onion proxy (in which case it defaults to -proxy set above, or none)
+    std::string onionArg = GetArg("-onion", "");
+    if (onionArg != "") {
+        if (onionArg == "0") { // Handle -noonion/-onion=0
+            SetLimited(NET_TOR); // set onions as unreachable
+        } else {
+            CService resolved(LookupNumeric(onionArg.c_str(), 9050));
+            proxyType addrOnion = proxyType(resolved, proxyRandomize);
+            if (!addrOnion.IsValid())
+                return InitError(strprintf(_("Invalid -onion address: '%s'"), onionArg));
+            SetProxy(NET_TOR, addrOnion);
+            SetLimited(NET_TOR, false);
+        }
     }
 
     // see Step 2: parameter interactions for more information about these
     fListen = GetBoolArg("-listen", DEFAULT_LISTEN);
     fDiscover = GetBoolArg("-discover", true);
-    fNameLookup = GetBoolArg("-dns", true);
+    fNameLookup = GetBoolArg("-dns", DEFAULT_NAME_LOOKUP);
+    fRelayTxes = !GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY);
 
-    bool fBound = false;
     if (fListen) {
-        if (mapArgs.count("-bind") || mapArgs.count("-whitebind")) {
-            BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
+        bool fBound = false;
+        if (mapMultiArgs.count("-bind")) {
+            BOOST_FOREACH(const std::string& strBind, mapMultiArgs.at("-bind")) {
                 CService addrBind;
                 if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
-                    return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind));
-                fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
+                    return InitError(ResolveErrMsg("bind", strBind));
+                fBound |= Bind(connman, addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
             }
-            BOOST_FOREACH(std::string strBind, mapMultiArgs["-whitebind"]) {
+        }
+        if (mapMultiArgs.count("-whitebind")) {
+            BOOST_FOREACH(const std::string& strBind, mapMultiArgs.at("-whitebind")) {
                 CService addrBind;
                 if (!Lookup(strBind.c_str(), addrBind, 0, false))
-                    return InitError(strprintf(_("Cannot resolve -whitebind address: '%s'"), strBind));
+                    return InitError(ResolveErrMsg("whitebind", strBind));
                 if (addrBind.GetPort() == 0)
                     return InitError(strprintf(_("Need to specify a port with -whitebind: '%s'"), strBind));
-                fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
+                fBound |= Bind(connman, addrBind, (BF_EXPLICIT | BF_REPORT_ERROR | BF_WHITELIST));
             }
         }
-        else {
+        if (!mapMultiArgs.count("-bind") && !mapMultiArgs.count("-whitebind")) {
             struct in_addr inaddr_any;
             inaddr_any.s_addr = INADDR_ANY;
-            fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
-            fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
+            fBound |= Bind(connman, CService(in6addr_any, GetListenPort()), BF_NONE);
+            fBound |= Bind(connman, CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
         }
         if (!fBound)
             return InitError(_("Failed to listen on any port. Use -listen=0 if you want this."));
     }
 
-    if (mapArgs.count("-externalip")) {
-        BOOST_FOREACH(string strAddr, mapMultiArgs["-externalip"]) {
-            CService addrLocal(strAddr, GetListenPort(), fNameLookup);
-            if (!addrLocal.IsValid())
-                return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr));
-            AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
+    if (mapMultiArgs.count("-externalip")) {
+        BOOST_FOREACH(const std::string& strAddr, mapMultiArgs.at("-externalip")) {
+            CService addrLocal;
+            if (Lookup(strAddr.c_str(), addrLocal, GetListenPort(), fNameLookup) && addrLocal.IsValid())
+                AddLocal(addrLocal, LOCAL_MANUAL);
+            else
+                return InitError(ResolveErrMsg("externalip", strAddr));
         }
     }
 
-    BOOST_FOREACH(string strDest, mapMultiArgs["-seednode"])
-        AddOneShot(strDest);
+    if (mapMultiArgs.count("-seednode")) {
+        BOOST_FOREACH(const std::string& strDest, mapMultiArgs.at("-seednode"))
+            connman.AddOneShot(strDest);
+    }
+
+#if ENABLE_ZMQ
+    pzmqNotificationInterface = CZMQNotificationInterface::Create();
+
+    if (pzmqNotificationInterface) {
+        RegisterValidationInterface(pzmqNotificationInterface);
+    }
+#endif
+    uint64_t nMaxOutboundLimit = 0; //unlimited unless -maxuploadtarget is set
+    uint64_t nMaxOutboundTimeframe = MAX_UPLOAD_TIMEFRAME;
+
+    if (IsArgSet("-maxuploadtarget")) {
+        nMaxOutboundLimit = GetArg("-maxuploadtarget", DEFAULT_MAX_UPLOAD_TARGET)*1024*1024;
+    }
 
     // ********************************************************* Step 7: load block chain
 
     fReindex = GetBoolArg("-reindex", false);
+    bool fReindexChainState = GetBoolArg("-reindex-chainstate", false);
 
     // Upgrading to 0.8; hard-link the old blknnnn.dat files into /blocks/
     boost::filesystem::path blocksDir = GetDataDir() / "blocks";
@@ -1120,18 +1409,19 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     // cache size calculations
     int64_t nTotalCache = (GetArg("-dbcache", nDefaultDbCache) << 20);
     nTotalCache = std::max(nTotalCache, nMinDbCache << 20); // total cache cannot be less than nMinDbCache
-    nTotalCache = std::min(nTotalCache, nMaxDbCache << 20); // total cache cannot be greated than nMaxDbcache
+    nTotalCache = std::min(nTotalCache, nMaxDbCache << 20); // total cache cannot be greater than nMaxDbcache
     int64_t nBlockTreeDBCache = nTotalCache / 8;
-    if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", false))
-        nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
+    nBlockTreeDBCache = std::min(nBlockTreeDBCache, (GetBoolArg("-txindex", DEFAULT_TXINDEX) ? nMaxBlockDBAndTxIndexCache : nMaxBlockDBCache) << 20);
     nTotalCache -= nBlockTreeDBCache;
     int64_t nCoinDBCache = std::min(nTotalCache / 2, (nTotalCache / 4) + (1 << 23)); // use 25%-50% of the remainder for disk cache
+    nCoinDBCache = std::min(nCoinDBCache, nMaxCoinsDBCache << 20); // cap total coins db cache
     nTotalCache -= nCoinDBCache;
     nCoinCacheUsage = nTotalCache; // the rest goes to in-memory cache
+    int64_t nMempoolSizeMax = GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
     LogPrintf("Cache configuration:\n");
     LogPrintf("* Using %.1fMiB for block index database\n", nBlockTreeDBCache * (1.0 / 1024 / 1024));
     LogPrintf("* Using %.1fMiB for chain state database\n", nCoinDBCache * (1.0 / 1024 / 1024));
-    LogPrintf("* Using %.1fMiB for in-memory UTXO set\n", nCoinCacheUsage * (1.0 / 1024 / 1024));
+    LogPrintf("* Using %.1fMiB for in-memory UTXO set (plus up to %.1fMiB of unused mempool space)\n", nCoinCacheUsage * (1.0 / 1024 / 1024), nMempoolSizeMax * (1.0 / 1024 / 1024));
 
     bool fLoaded = false;
     while (!fLoaded) {
@@ -1150,7 +1440,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                 delete pblocktree;
 
                 pblocktree = new CBlockTreeDB(nBlockTreeDBCache, false, fReindex);
-                pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex);
+                pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex || fReindexChainState);
                 pcoinscatcher = new CCoinsViewErrorCatcher(pcoinsdbview);
                 pcoinsTip = new CCoinsViewCache(pcoinscatcher);
 
@@ -1161,7 +1451,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                         CleanupBlockRevFiles();
                 }
 
-                if (!LoadBlockIndex()) {
+                if (!LoadBlockIndex(chainparams)) {
                     strLoadError = _("Error loading block database");
                     break;
                 }
@@ -1172,14 +1462,14 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                     return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));
 
                 // Initialize the block index (no-op if non-empty database was already loaded)
-                if (!InitBlockIndex()) {
+                if (!InitBlockIndex(chainparams)) {
                     strLoadError = _("Error initializing block database");
                     break;
                 }
 
                 // Check for changed -txindex state
-                if (fTxIndex != GetBoolArg("-txindex", false)) {
-                    strLoadError = _("You need to rebuild the database using -reindex to change -txindex");
+                if (fTxIndex != GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
+                    strLoadError = _("You need to rebuild the database using -reindex-chainstate to change -txindex");
                     break;
                 }
 
@@ -1190,13 +1480,34 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                     break;
                 }
 
+                if (!fReindex && chainActive.Tip() != NULL) {
+                    uiInterface.InitMessage(_("Rewinding blocks..."));
+                    if (!RewindBlockIndex(chainparams)) {
+                        strLoadError = _("Unable to rewind the database to a pre-fork state. You will need to redownload the blockchain");
+                        break;
+                    }
+                }
+
                 uiInterface.InitMessage(_("Verifying blocks..."));
-                if (fHavePruned && GetArg("-checkblocks", 288) > MIN_BLOCKS_TO_KEEP) {
-                    LogPrintf("Prune: pruned datadir may not have more than %d blocks; -checkblocks=%d may fail\n",
-                        MIN_BLOCKS_TO_KEEP, GetArg("-checkblocks", 288));
+                if (fHavePruned && GetArg("-checkblocks", DEFAULT_CHECKBLOCKS) > MIN_BLOCKS_TO_KEEP) {
+                    LogPrintf("Prune: pruned datadir may not have more than %d blocks; only checking available blocks",
+                        MIN_BLOCKS_TO_KEEP);
                 }
-                if (!CVerifyDB().VerifyDB(pcoinsdbview, GetArg("-checklevel", 3),
-                              GetArg("-checkblocks", 288))) {
+
+                {
+                    LOCK(cs_main);
+                    CBlockIndex* tip = chainActive.Tip();
+                    RPCNotifyBlockChange(true, tip);
+                    if (tip && tip->nTime > GetAdjustedTime() + 2 * 60 * 60) {
+                        strLoadError = _("The block database contains a block which appears to be from the future. "
+                                "This may be due to your computer's date and time being set incorrectly. "
+                                "Only rebuild the block database if you are sure that your computer's date and time are correct");
+                        break;
+                    }
+                }
+
+                if (!CVerifyDB().VerifyDB(chainparams, pcoinsdbview, GetArg("-checklevel", DEFAULT_CHECKLEVEL),
+                              GetArg("-checkblocks", DEFAULT_CHECKBLOCKS))) {
                     strLoadError = _("Corrupted block database detected");
                     break;
                 }
@@ -1212,8 +1523,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (!fLoaded) {
             // first suggest a reindex
             if (!fReset) {
-                bool fRet = uiInterface.ThreadSafeMessageBox(
+                bool fRet = uiInterface.ThreadSafeQuestion(
                     strLoadError + ".\n\n" + _("Do you want to rebuild the block database now?"),
+                    strLoadError + ".\nPlease restart with -reindex or -reindex-chainstate to recover.",
                     "", CClientUIInterface::MSG_ERROR | CClientUIInterface::BTN_ABORT);
                 if (fRet) {
                     fReindex = true;
@@ -1245,226 +1557,115 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         mempool.ReadFeeEstimates(est_filein);
     fFeeEstimatesInitialized = true;
 
-    // if prune mode, unset NODE_NETWORK and prune block files
+    // ********************************************************* Step 8: load wallet
+#ifdef ENABLE_WALLET
+    if (!CWallet::InitLoadWallet())
+        return false;
+#else
+    LogPrintf("No wallet support compiled in!\n");
+#endif
+
+    // ********************************************************* Step 9: data directory maintenance
+
+    // if pruning, unset the service bit and perform the initial blockstore prune
+    // after any wallet rescanning has taken place.
     if (fPruneMode) {
         LogPrintf("Unsetting NODE_NETWORK on prune mode\n");
-        nLocalServices &= ~NODE_NETWORK;
+        nLocalServices = ServiceFlags(nLocalServices & ~NODE_NETWORK);
         if (!fReindex) {
+            uiInterface.InitMessage(_("Pruning blockstore..."));
             PruneAndFlush();
         }
     }
 
-    // ********************************************************* Step 8: load wallet
-#ifdef ENABLE_WALLET
-    if (fDisableWallet) {
-        pwalletMain = NULL;
-        LogPrintf("Wallet disabled!\n");
-    } else {
-
-        // needed to restore wallet transaction meta data after -zapwallettxes
-        std::vector<CWalletTx> vWtx;
-
-        if (GetBoolArg("-zapwallettxes", false)) {
-            uiInterface.InitMessage(_("Zapping all transactions from wallet..."));
-
-            pwalletMain = new CWallet(strWalletFile);
-            DBErrors nZapWalletRet = pwalletMain->ZapWalletTx(vWtx);
-            if (nZapWalletRet != DB_LOAD_OK) {
-                uiInterface.InitMessage(_("Error loading wallet.dat: Wallet corrupted"));
-                return false;
-            }
-
-            delete pwalletMain;
-            pwalletMain = NULL;
-        }
-
-        uiInterface.InitMessage(_("Loading wallet..."));
-
-        nStart = GetTimeMillis();
-        bool fFirstRun = true;
-        pwalletMain = new CWallet(strWalletFile);
-        DBErrors nLoadWalletRet = pwalletMain->LoadWallet(fFirstRun);
-        if (nLoadWalletRet != DB_LOAD_OK)
-        {
-            if (nLoadWalletRet == DB_CORRUPT)
-                strErrors << _("Error loading wallet.dat: Wallet corrupted") << "\n";
-            else if (nLoadWalletRet == DB_NONCRITICAL_ERROR)
-            {
-                string msg(_("Warning: error reading wallet.dat! All keys read correctly, but transaction data"
-                             " or address book entries might be missing or incorrect."));
-                InitWarning(msg);
-            }
-            else if (nLoadWalletRet == DB_TOO_NEW)
-                strErrors << _("Error loading wallet.dat: Wallet requires newer version of Dogecoin Core") << "\n";
-            else if (nLoadWalletRet == DB_NEED_REWRITE)
-            {
-                strErrors << _("Wallet needed to be rewritten: restart Dogecoin Core to complete") << "\n";
-                LogPrintf("%s", strErrors.str());
-                return InitError(strErrors.str());
-            }
-            else
-                strErrors << _("Error loading wallet.dat") << "\n";
-        }
-
-        if (GetBoolArg("-upgradewallet", fFirstRun))
-        {
-            int nMaxVersion = GetArg("-upgradewallet", 0);
-            if (nMaxVersion == 0) // the -upgradewallet without argument case
-            {
-                LogPrintf("Performing wallet upgrade to %i\n", FEATURE_LATEST);
-                nMaxVersion = CLIENT_VERSION;
-                pwalletMain->SetMinVersion(FEATURE_LATEST); // permanently upgrade the wallet immediately
-            }
-            else
-                LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
-            if (nMaxVersion < pwalletMain->GetVersion())
-                strErrors << _("Cannot downgrade wallet") << "\n";
-            pwalletMain->SetMaxVersion(nMaxVersion);
-        }
-
-        if (fFirstRun)
-        {
-            // Create new keyUser and set as default key
-            RandAddSeedPerfmon();
-
-            CPubKey newDefaultKey;
-            if (pwalletMain->GetKeyFromPool(newDefaultKey)) {
-                pwalletMain->SetDefaultKey(newDefaultKey);
-                if (!pwalletMain->SetAddressBook(pwalletMain->vchDefaultKey.GetID(), "", "receive"))
-                    strErrors << _("Cannot write default address") << "\n";
-            }
-
-            pwalletMain->SetBestChain(chainActive.GetLocator());
-        }
-
-        LogPrintf("%s", strErrors.str());
-        LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
+    if (chainparams.GetConsensus(0).vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout != 0) {
+        // Only advertise witness capabilities if they have a reasonable start time.
+        // This allows us to have the code merged without a defined softfork, by setting its
+        // end time to 0.
+        // Note that setting NODE_WITNESS is never required: the only downside from not
+        // doing so is that after activation, no upgraded nodes will fetch from you.
+        nLocalServices = ServiceFlags(nLocalServices | NODE_WITNESS);
+        // Only care about others providing witness capabilities if there is a softfork
+        // defined.
+        nRelevantServices = ServiceFlags(nRelevantServices | NODE_WITNESS);
+    }
 
-        RegisterValidationInterface(pwalletMain);
+    // ********************************************************* Step 10: import blocks
 
-        CBlockIndex *pindexRescan = chainActive.Tip();
-        if (GetBoolArg("-rescan", false))
-            pindexRescan = chainActive.Genesis();
-        else
-        {
-            CWalletDB walletdb(strWalletFile);
-            CBlockLocator locator;
-            if (walletdb.ReadBestBlock(locator))
-                pindexRescan = FindForkInGlobalIndex(chainActive, locator);
-            else
-                pindexRescan = chainActive.Genesis();
-        }
-        if (chainActive.Tip() && chainActive.Tip() != pindexRescan)
-        {
-            uiInterface.InitMessage(_("Rescanning..."));
-            LogPrintf("Rescanning last %i blocks (from block %i)...\n", chainActive.Height() - pindexRescan->nHeight, pindexRescan->nHeight);
-            nStart = GetTimeMillis();
-            pwalletMain->ScanForWalletTransactions(pindexRescan, true);
-            LogPrintf(" rescan      %15dms\n", GetTimeMillis() - nStart);
-            pwalletMain->SetBestChain(chainActive.GetLocator());
-            nWalletDBUpdated++;
-
-            // Restore wallet transaction metadata after -zapwallettxes=1
-            if (GetBoolArg("-zapwallettxes", false) && GetArg("-zapwallettxes", "1") != "2")
-            {
-                CWalletDB walletdb(strWalletFile);
+    if (!CheckDiskSpace())
+        return false;
 
-                BOOST_FOREACH(const CWalletTx& wtxOld, vWtx)
-                {
-                    uint256 hash = wtxOld.GetHash();
-                    std::map<uint256, CWalletTx>::iterator mi = pwalletMain->mapWallet.find(hash);
-                    if (mi != pwalletMain->mapWallet.end())
-                    {
-                        const CWalletTx* copyFrom = &wtxOld;
-                        CWalletTx* copyTo = &mi->second;
-                        copyTo->mapValue = copyFrom->mapValue;
-                        copyTo->vOrderForm = copyFrom->vOrderForm;
-                        copyTo->nTimeReceived = copyFrom->nTimeReceived;
-                        copyTo->nTimeSmart = copyFrom->nTimeSmart;
-                        copyTo->fFromMe = copyFrom->fFromMe;
-                        copyTo->strFromAccount = copyFrom->strFromAccount;
-                        copyTo->nOrderPos = copyFrom->nOrderPos;
-                        copyTo->WriteToDisk(&walletdb);
-                    }
-                }
-            }
-        }
-        pwalletMain->SetBroadcastTransactions(GetBoolArg("-walletbroadcast", true));
-    } // (!fDisableWallet)
-#else // ENABLE_WALLET
-    LogPrintf("No wallet support compiled in!\n");
-#endif // !ENABLE_WALLET
-    // ********************************************************* Step 9: import blocks
+    // Either install a handler to notify us when genesis activates, or set fHaveGenesis directly.
+    // No locking, as this happens before any background thread is started.
+    if (chainActive.Tip() == NULL) {
+        uiInterface.NotifyBlockTip.connect(BlockNotifyGenesisWait);
+    } else {
+        fHaveGenesis = true;
+    }
 
-    if (mapArgs.count("-blocknotify"))
+    if (IsArgSet("-blocknotify"))
         uiInterface.NotifyBlockTip.connect(BlockNotifyCallback);
 
-    uiInterface.InitMessage(_("Activating best chain..."));
-    // scan for better chains in the block chain database, that are not yet connected in the active best chain
-    CValidationState state;
-    if (!ActivateBestChain(state))
-        strErrors << "Failed to connect best block";
-
     std::vector<boost::filesystem::path> vImportFiles;
-    if (mapArgs.count("-loadblock"))
+    if (mapMultiArgs.count("-loadblock"))
     {
-        BOOST_FOREACH(string strFile, mapMultiArgs["-loadblock"])
+        BOOST_FOREACH(const std::string& strFile, mapMultiArgs.at("-loadblock"))
             vImportFiles.push_back(strFile);
     }
-    threadGroup.create_thread(boost::bind(&ThreadImport, vImportFiles));
-    if (chainActive.Tip() == NULL) {
-        LogPrintf("Waiting for genesis block to be imported...\n");
-        while (!fRequestShutdown && chainActive.Tip() == NULL)
-            MilliSleep(10);
-    }
-
-    // ********************************************************* Step 10: start node
 
-    if (!CheckDiskSpace())
-        return false;
+    threadGroup.create_thread(boost::bind(&ThreadImport, vImportFiles));
 
-    if (!strErrors.str().empty())
-        return InitError(strErrors.str());
+    // Wait for genesis block to be processed
+    {
+        boost::unique_lock<boost::mutex> lock(cs_GenesisWait);
+        while (!fHaveGenesis) {
+            condvar_GenesisWait.wait(lock);
+        }
+        uiInterface.NotifyBlockTip.disconnect(BlockNotifyGenesisWait);
+    }
 
-    RandAddSeedPerfmon();
+    // ********************************************************* Step 11: start node
 
     //// debug print
     LogPrintf("mapBlockIndex.size() = %u\n",   mapBlockIndex.size());
     LogPrintf("nBestHeight = %d\n",                   chainActive.Height());
-#ifdef ENABLE_WALLET
-    LogPrintf("setKeyPool.size() = %u\n",      pwalletMain ? pwalletMain->setKeyPool.size() : 0);
-    LogPrintf("mapWallet.size() = %u\n",       pwalletMain ? pwalletMain->mapWallet.size() : 0);
-    LogPrintf("mapAddressBook.size() = %u\n",  pwalletMain ? pwalletMain->mapAddressBook.size() : 0);
-#endif
+    if (GetBoolArg("-listenonion", DEFAULT_LISTEN_ONION))
+        StartTorControl(threadGroup, scheduler);
 
-    StartNode(threadGroup, scheduler);
+    Discover(threadGroup);
 
-    // Monitor the chain, and alert if we get blocks much quicker or slower than expected
-    int64_t nPowTargetSpacing = Params().GetConsensus(chainActive.Height()).nPowTargetSpacing;
-    CScheduler::Function f = boost::bind(&PartitionCheck, &IsInitialBlockDownload,
-                                         boost::ref(cs_main), boost::cref(pindexBestHeader), nPowTargetSpacing);
-    scheduler.scheduleEvery(f, nPowTargetSpacing);
+    // Map ports with UPnP
+    MapPort(GetBoolArg("-upnp", DEFAULT_UPNP));
 
-#ifdef ENABLE_WALLET
-    // Generate coins in the background
-    if (pwalletMain)
-        GenerateBitcoins(GetBoolArg("-gen", false), pwalletMain, GetArg("-genproclimit", 1));
+    std::string strNodeError;
+    CConnman::Options connOptions;
+    connOptions.nLocalServices = nLocalServices;
+    connOptions.nRelevantServices = nRelevantServices;
+    connOptions.nMaxConnections = nMaxConnections;
+    connOptions.nMaxOutbound = std::min(MAX_OUTBOUND_CONNECTIONS, connOptions.nMaxConnections);
+    connOptions.nMaxAddnode = MAX_ADDNODE_CONNECTIONS;
+    connOptions.nMaxFeeler = 1;
+    connOptions.nBestHeight = chainActive.Height();
+    connOptions.uiInterface = &uiInterface;
+    connOptions.nSendBufferMaxSize = 1000*GetArg("-maxsendbuffer", DEFAULT_MAXSENDBUFFER);
+    connOptions.nReceiveFloodSize = 1000*GetArg("-maxreceivebuffer", DEFAULT_MAXRECEIVEBUFFER);
 
-#endif
+    connOptions.nMaxOutboundTimeframe = nMaxOutboundTimeframe;
+    connOptions.nMaxOutboundLimit = nMaxOutboundLimit;
+
+    if (!connman.Start(scheduler, strNodeError, connOptions))
+        return InitError(strNodeError);
+
+    // ********************************************************* Step 12: finished
 
-    // ********************************************************* Step 11: finished
+    // Dogecoin: Do we need to do any RPC mining init here?
 
     SetRPCWarmupFinished();
     uiInterface.InitMessage(_("Done loading"));
 
 #ifdef ENABLE_WALLET
-    if (pwalletMain) {
-        // Add wallet transactions that aren't already in a block to mapTransactions
-        pwalletMain->ReacceptWalletTransactions();
-
-        // Run a thread to flush wallet periodically
-        threadGroup.create_thread(boost::bind(&ThreadFlushWalletDB, boost::ref(pwalletMain->strWalletFile)));
-    }
+    if (pwalletMain)
+        pwalletMain->postInitProcess(threadGroup);
 #endif
 
     return !fRequestShutdown;