Merge branch 'master' into single_prodname

1 files changed, 233 insertions, 175 deletions

diff --git a/src/init.cpp b/src/init.cpp
index 5746fb5120..4680c8f217 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) 2009-2015 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -23,7 +23,7 @@
 #include "miner.h"
 #include "net.h"
 #include "policy/policy.h"
-#include "rpcserver.h"
+#include "rpc/server.h"
 #include "script/standard.h"
 #include "script/sigcache.h"
 #include "scheduler.h"
@@ -65,6 +65,10 @@ using namespace std;
 CWallet* pwalletMain = NULL;
 #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;
 
 #if ENABLE_ZMQ
 static CZMQNotificationInterface* pzmqNotificationInterface = NULL;
@@ -295,7 +299,7 @@ void OnRPCPreCommand(const CRPCCommand& cmd)
 {
     // Observe safe mode
     string strWarning = GetWarnings("rpc");
-    if (strWarning != "" && !GetBoolArg("-disablesafemode", false) &&
+    if (strWarning != "" && !GetBoolArg("-disablesafemode", DEFAULT_DISABLE_SAFEMODE) &&
         !cmd.okSafeMode)
         throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
 }
@@ -307,7 +311,8 @@ std::string HelpMessage(HelpMessageMode mode)
     // 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"));
+    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)"));
@@ -315,7 +320,7 @@ std::string HelpMessage(HelpMessageMode mode)
         strUsage += HelpMessageOpt("-blocksonly", strprintf(_("Whether to operate in a blocks only mode (default: %u)"), DEFAULT_BLOCKSONLY));
     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("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), "bitcoin.conf"));
+    strUsage += HelpMessageOpt("-conf=<file>", strprintf(_("Specify configuration file (default: %s)"), BITCOIN_CONF_FILENAME));
     if (mode == HMM_BITCOIND)
     {
 #ifndef WIN32
@@ -331,7 +336,7 @@ std::string HelpMessage(HelpMessageMode mode)
     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)"),
         -GetNumCores(), MAX_SCRIPTCHECK_THREADS, DEFAULT_SCRIPTCHECK_THREADS));
 #ifndef WIN32
-    strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), "bitcoind.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 is incompatible with -txindex and -rescan. "
             "Warning: Reverting this setting requires re-downloading the entire blockchain. "
@@ -340,30 +345,34 @@ std::string HelpMessage(HelpMessageMode mode)
 #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("-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("-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)"));
     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("-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)"));
     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)"), 5000));
-    strUsage += HelpMessageOpt("-maxsendbuffer=<n>", strprintf(_("Maximum per-connection send buffer, <n>*1000 bytes (default: %u)"), 1000));
+    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("-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)"), 8333, 18333));
+    strUsage += HelpMessageOpt("-permitbaremultisig", strprintf(_("Relay non-P2SH multisig (default: %u)"), DEFAULT_PERMIT_BAREMULTISIG));
+    strUsage += HelpMessageOpt("-permitrbf", strprintf(_("Permit transaction replacements in the memory pool (default: %u)"), DEFAULT_PERMIT_REPLACEMENT));
+    strUsage += HelpMessageOpt("-peerbloomfilters", strprintf(_("Support filtering of blocks and transaction with bloom filters (default: %u)"), 1));
+    if (showDebug)
+        strUsage += HelpMessageOpt("-enforcenodebloom", strprintf("Enforce minimum protocol version to limit use of bloom filters (default: %u)", 0));
+    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("-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("-torcontrol=<ip>:<port>", strprintf(_("Tor control port to use if onion listening enabled (default: %s)"), DEFAULT_TOR_CONTROL));
@@ -378,28 +387,28 @@ std::string HelpMessage(HelpMessageMode mode)
     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.") +
         " " + _("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("-whitelistalwaysrelay", strprintf(_("Always relay transactions received from whitelisted peers (default: %d)"), DEFAULT_WHITELISTALWAYSRELAY));
+    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 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 %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)",
+    strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
+    strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
+        CURRENCY_UNIT, FormatMoney(DEFAULT_FALLBACK_FEE)));
+    strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
             CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MINFEE)));
     strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
         CURRENCY_UNIT, 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));
+    strUsage += HelpMessageOpt("-sendfreetransactions", strprintf(_("Send transactions as zero-fee transactions if possible (default: %u)"), DEFAULT_SEND_FREE_TRANSACTIONS));
+    strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), DEFAULT_SPEND_ZEROCONF_CHANGE));
     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 (in %s) to use in a single wallet transaction; setting this too low may abort large transactions (default: %s)"),
-        CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MAXFEE)));
     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("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), DEFAULT_WALLETBROADCAST));
     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)"));
@@ -408,55 +417,66 @@ std::string HelpMessage(HelpMessageMode mode)
 #if ENABLE_ZMQ
     strUsage += HelpMessageGroup(_("ZeroMQ notification options:"));
     strUsage += HelpMessageOpt("-zmqpubhashblock=<address>", _("Enable publish hash block in <address>"));
-    strUsage += HelpMessageOpt("-zmqpubhashtransaction=<address>", _("Enable publish hash transaction in <address>"));
+    strUsage += HelpMessageOpt("-zmqpubhashtx=<address>", _("Enable publish hash transaction in <address>"));
     strUsage += HelpMessageOpt("-zmqpubrawblock=<address>", _("Enable publish raw block in <address>"));
-    strUsage += HelpMessageOpt("-zmqpubrawtransaction=<address>", _("Enable publish raw transaction 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("Disable expensive verification for known chain history (default: %u)", 1));
+        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));
 #ifdef ENABLE_WALLET
         strUsage += HelpMessageOpt("-dblogsize=<n>", strprintf("Flush wallet database activity from memory to disk log every <n> megabytes (default: %u)", DEFAULT_WALLET_DBLOGSIZE));
 #endif
-        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("-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");
 #ifdef ENABLE_WALLET
-        strUsage += HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", 1));
+        strUsage += HelpMessageOpt("-flushwallet", strprintf("Run a thread to flush wallet periodically (default: %u)", DEFAULT_FLUSHWALLET));
 #endif
-        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));
     }
-    string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, mempoolrej, net, proxy, prune, http, libevent"; // Don't translate these and qt below
+    string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, mempoolrej, net, proxy, prune, http, libevent, 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 or if <category> = 1, output all debugging information.") + _("<category> can be:") + " " + debugCategories + ".");
-    strUsage += HelpMessageOpt("-gen", strprintf(_("Generate coins (default: %u)"), 0));
+    if (showDebug)
+        strUsage += HelpMessageOpt("-nodebug", "Turn off debugging messages, same as -debug=0");
+    strUsage += HelpMessageOpt("-gen", strprintf(_("Generate coins (default: %u)"), DEFAULT_GENERATE));
     strUsage += HelpMessageOpt("-genproclimit=<n>", strprintf(_("Set the number of threads for coin generation if enabled (-1 = all cores, default: %d)"), DEFAULT_GENERATE_THREADS));
     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("-logtimemicros", strprintf("Add microsecond precision to debug timestamps (default: %u)", DEFAULT_LOGTIMEMICROS));
-        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("-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 %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("-printpriority", strprintf("Log transaction priority and fee per kB when mining blocks (default: %u)", DEFAULT_PRINTPRIORITY));
+#ifdef ENABLE_WALLET
+        strUsage += HelpMessageOpt("-privdb", strprintf("Sets the DB_PRIVATE flag in the wallet db environment (default: %u)", DEFAULT_WALLET_PRIVDB));
+#endif
     }
     strUsage += HelpMessageOpt("-shrinkdebugfile", _("Shrink debug.log file on client startup (default: 1 when no -debug)"));
 
@@ -465,11 +485,12 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageGroup(_("Node relay options:"));
     if (showDebug)
         strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !Params(CBaseChainParams::TESTNET).RequireStandard()));
-    strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), 1));
+    strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Minimum bytes per sigop in transactions we relay and mine (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 += HelpMessageGroup(_("Block creation options:"));
-    strUsage += HelpMessageOpt("-blockminsize=<n>", strprintf(_("Set minimum block size in bytes (default: %u)"), 0));
+    strUsage += HelpMessageOpt("-blockminsize=<n>", strprintf(_("Set minimum block size in bytes (default: %u)"), DEFAULT_BLOCK_MIN_SIZE));
     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));
     if (showDebug)
@@ -477,11 +498,13 @@ std::string HelpMessage(HelpMessageMode mode)
 
     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. 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)"), DEFAULT_HTTP_THREADS));
     if (showDebug) {
@@ -489,23 +512,6 @@ std::string HelpMessage(HelpMessageMode mode)
         strUsage += HelpMessageOpt("-rpcservertimeout=<n>", strprintf("Timeout during HTTP requests (default: %d)", DEFAULT_HTTP_SERVER_TIMEOUT));
     }
 
-    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)"));
-        strUsage += HelpMessageOpt("-resetguisettings", _("Reset all settings changes made over the GUI"));
-        if (showDebug) {
-            strUsage += HelpMessageOpt("-uiplatform", "Select platform to customize UI for (one of windows, macosx, other; default: platform compiled on)");
-        }
-    }
-
     return strUsage;
 }
 
@@ -522,11 +528,14 @@ std::string LicenseInfo()
            "\n";
 }
 
-static void BlockNotifyCallback(const uint256& hashNewTip)
+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, "%s", pBlockIndex->GetBlockHash().GetHex());
     boost::thread t(runCommand, strCmd); // thread runs free
 }
 
@@ -588,6 +597,7 @@ void CleanupBlockRevFiles()
 
 void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
 {
+    const CChainParams& chainparams = Params();
     RenameThread("bitcoin-loadblk");
     // -reindex
     if (fReindex) {
@@ -601,14 +611,14 @@ 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
@@ -619,7 +629,7 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
             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());
@@ -632,13 +642,13 @@ void ThreadImport(std::vector<boost::filesystem::path> vImportFiles)
         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)) {
+    if (GetBoolArg("-stopafterblockimport", DEFAULT_STOPAFTERBLOCKIMPORT)) {
         LogPrintf("Stopping after block import\n");
         StartShutdown();
     }
@@ -670,13 +680,114 @@ bool AppInitServers(boost::thread_group& threadGroup)
         return false;
     if (!StartHTTPRPC())
         return false;
-    if (GetBoolArg("-rest", false) && !StartREST())
+    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 (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__);
+    }
+
+    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 (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__);
+    }
+
+    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__);
+    }
+
+    // -zapwallettx implies a rescan
+    if (GetBoolArg("-zapwallettxes", false)) {
+        if (SoftSetBoolArg("-rescan", true))
+            LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);
+    }
+
+    // disable walletbroadcast and whitelistrelay in blocksonly mode
+    if (GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY)) {
+        if (SoftSetBoolArg("-whitelistrelay", false))
+            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -whitelistrelay=0\n", __func__);
+#ifdef ENABLE_WALLET
+        if (SoftSetBoolArg("-walletbroadcast", false))
+            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -walletbroadcast=0\n", __func__);
+#endif
+    }
+
+    // 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);
+}
+
+static std::string AmountErrMsg(const char * const optname, const std::string& strValue)
+{
+    return strprintf(_("Invalid amount for -%s=<amount>: '%s'"), optname, strValue);
+}
+
+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("Bitcoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
+}
+
 /** Initialize bitcoin.
  *  @pre Parameters should be parsed and config file should be read.
  */
@@ -741,78 +852,11 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     // ********************************************************* 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);
-    fLogTimeMicros = GetBoolArg("-logtimemicros", DEFAULT_LOGTIMEMICROS);
-    fLogIPs = GetBoolArg("-logips", false);
-
-    LogPrintf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    LogPrintf("Bitcoin version %s (%s)\n", FormatFullVersion(), CLIENT_DATE);
-
-    // 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__);
-    }
-
-    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 (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__);
-    }
-
-    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__);
-    }
-
-    // -zapwallettx implies a rescan
-    if (GetBoolArg("-zapwallettxes", false)) {
-        if (SoftSetBoolArg("-rescan", true))
-            LogPrintf("%s: parameter interaction: -zapwallettxes=<mode> -> setting -rescan=1\n", __func__);
-    }
+    // also see: InitParameterInteraction()
 
     // if using block pruning, then disable txindex
     if (GetArg("-prune", 0)) {
-        if (GetBoolArg("-txindex", false))
+        if (GetBoolArg("-txindex", DEFAULT_TXINDEX))
             return InitError(_("Prune mode is incompatible with -txindex."));
 #ifdef ENABLE_WALLET
         if (GetBoolArg("-rescan", false)) {
@@ -821,16 +865,6 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 #endif
     }
 
-    // disable walletbroadcast and whitelistalwaysrelay in blocksonly mode
-    if (GetBoolArg("-blocksonly", DEFAULT_BLOCKSONLY)) {
-        if (SoftSetBoolArg("-whitelistalwaysrelay", false))
-            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -whitelistalwaysrelay=0\n", __func__);
-#ifdef ENABLE_WALLET
-        if (SoftSetBoolArg("-walletbroadcast", false))
-            LogPrintf("%s: parameter interaction: -blocksonly=1 -> setting -walletbroadcast=0\n", __func__);
-#endif
-    }
-    
     // Make sure enough file descriptors are available
     int nBind = std::max((int)mapArgs.count("-bind") + (int)mapArgs.count("-whitebind"), 1);
     int nUserMaxConnections = GetArg("-maxconnections", DEFAULT_MAX_PEER_CONNECTIONS);
@@ -867,19 +901,22 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (GetBoolArg("-benchmark", false))
         InitWarning(_("Unsupported argument -benchmark ignored, use -debug=bench."));
 
+    if (GetBoolArg("-whitelistalwaysrelay", false))
+        InitWarning(_("Unsupported argument -whitelistalwaysrelay ignored, use -whitelistrelay and/or -whitelistforcerelay."));
+
     // Checkmempool and checkblockindex default to true in regtest mode
     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);
 
-    // -mempoollimit limits
-    int64_t nMempoolSizeLimit = GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000;
-    int64_t nMempoolDescendantSizeLimit = GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000;
-    if (nMempoolSizeLimit < 0 || nMempoolSizeLimit < nMempoolDescendantSizeLimit * 40)
-        return InitError(strprintf(_("-maxmempool must be at least %d MB"), GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) / 25));
+    // 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)));
 
     // -par=0 means autodetect, but nScriptCheckThreads==0 means no concurrency
     nScriptCheckThreads = GetArg("-par", DEFAULT_SCRIPTCHECK_THREADS);
@@ -908,6 +945,8 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
 
 #ifdef ENABLE_WALLET
     bool fDisableWallet = GetBoolArg("-disablewallet", false);
+    if (!fDisableWallet)
+        walletRegisterRPCCommands();
 #endif
 
     nConnectTimeout = GetArg("-timeout", DEFAULT_CONNECT_TIMEOUT);
@@ -926,12 +965,13 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (ParseMoney(mapArgs["-minrelaytxfee"], n) && n > 0)
             ::minRelayTxFee = CFeeRate(n);
         else
-            return InitError(strprintf(_("Invalid amount for -minrelaytxfee=<amount>: '%s'"), mapArgs["-minrelaytxfee"]));
+            return InitError(AmountErrMsg("minrelaytxfee", mapArgs["-minrelaytxfee"]));
     }
 
     fRequireStandard = !GetBoolArg("-acceptnonstdtxn", !Params().RequireStandard());
     if (Params().RequireStandard() && !fRequireStandard)
         return InitError(strprintf("acceptnonstdtxn is not currently supported for %s chain", chainparams.NetworkIDString()));
+    nBytesPerSigOp = GetArg("-bytespersigop", nBytesPerSigOp);
 
 #ifdef ENABLE_WALLET
     if (mapArgs.count("-mintxfee"))
@@ -940,14 +980,23 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         if (ParseMoney(mapArgs["-mintxfee"], n) && n > 0)
             CWallet::minTxFee = CFeeRate(n);
         else
-            return InitError(strprintf(_("Invalid amount for -mintxfee=<amount>: '%s'"), mapArgs["-mintxfee"]));
+            return InitError(AmountErrMsg("mintxfee", mapArgs["-mintxfee"]));
+    }
+    if (mapArgs.count("-fallbackfee"))
+    {
+        CAmount nFeePerK = 0;
+        if (!ParseMoney(mapArgs["-fallbackfee"], nFeePerK))
+            return InitError(strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), mapArgs["-fallbackfee"]));
+        if (nFeePerK > HIGH_TX_FEE_PER_KB)
+            InitWarning(_("-fallbackfee is set very high! This is the transaction fee you may pay when fee estimates are not available."));
+        CWallet::fallbackFee = CFeeRate(nFeePerK);
     }
     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)
+            return InitError(AmountErrMsg("paytxfee", mapArgs["-paytxfee"]));
+        if (nFeePerK > HIGH_TX_FEE_PER_KB)
             InitWarning(_("-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)
@@ -960,8 +1009,8 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     {
         CAmount nMaxFee = 0;
         if (!ParseMoney(mapArgs["-maxtxfee"], nMaxFee))
-            return InitError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s'"), mapArgs["-maptxfee"]));
-        if (nMaxFee > nHighTransactionMaxFeeWarning)
+            return InitError(AmountErrMsg("maxtxfee", mapArgs["-maxtxfee"]));
+        if (nMaxFee > HIGH_MAX_TX_FEE)
             InitWarning(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction."));
         maxTxFee = nMaxFee;
         if (CFeeRate(maxTxFee, 1000) < ::minRelayTxFee)
@@ -971,13 +1020,14 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         }
     }
     nTxConfirmTarget = GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
-    bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", true);
-    fSendFreeTransactions = GetBoolArg("-sendfreetransactions", false);
+    bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", DEFAULT_SPEND_ZEROCONF_CHANGE);
+    fSendFreeTransactions = GetBoolArg("-sendfreetransactions", DEFAULT_SEND_FREE_TRANSACTIONS);
 
     std::string strWalletFile = GetArg("-wallet", "wallet.dat");
 #endif // ENABLE_WALLET
 
-    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);
@@ -988,6 +1038,9 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (GetBoolArg("-peerbloomfilters", true))
         nLocalServices |= NODE_BLOOM;
 
+    nMaxTipAge = GetArg("-maxtipage", DEFAULT_MAX_TIP_AGE);
+    fPermitReplacement = GetBoolArg("-permitrbf", DEFAULT_PERMIT_REPLACEMENT);
+
     // ********************************************************* Step 4: application initialization: dir lock, daemonize, pidfile, debug log
 
     // Initialize elliptic curve code
@@ -1026,7 +1079,12 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     if (fPrintToDebugLog)
         OpenDebugLog();
 
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
     LogPrintf("Using OpenSSL version %s\n", SSLeay_version(SSLEAY_VERSION));
+#else
+    LogPrintf("Using OpenSSL version %s\n", OpenSSL_version(OPENSSL_VERSION));
+#endif
+
 #ifdef ENABLE_WALLET
     LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(0, 0, 0));
 #endif
@@ -1123,7 +1181,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         }
     }
 
-    bool proxyRandomize = 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", "");
@@ -1158,7 +1216,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     // 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);
 
     bool fBound = false;
     if (fListen) {
@@ -1166,13 +1224,13 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
             BOOST_FOREACH(const std::string& strBind, mapMultiArgs["-bind"]) {
                 CService addrBind;
                 if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
-                    return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind));
+                    return InitError(ResolveErrMsg("bind", strBind));
                 fBound |= Bind(addrBind, (BF_EXPLICIT | BF_REPORT_ERROR));
             }
             BOOST_FOREACH(const std::string& strBind, mapMultiArgs["-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));
@@ -1192,7 +1250,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         BOOST_FOREACH(const std::string& strAddr, mapMultiArgs["-externalip"]) {
             CService addrLocal(strAddr, GetListenPort(), fNameLookup);
             if (!addrLocal.IsValid())
-                return InitError(strprintf(_("Cannot resolve -externalip address: '%s'"), strAddr));
+                return InitError(ResolveErrMsg("externalip", strAddr));
             AddLocal(CService(strAddr, GetListenPort(), fNameLookup), LOCAL_MANUAL);
         }
     }
@@ -1247,7 +1305,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     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
     int64_t nBlockTreeDBCache = nTotalCache / 8;
-    if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", false))
+    if (nBlockTreeDBCache > (1 << 21) && !GetBoolArg("-txindex", DEFAULT_TXINDEX))
         nBlockTreeDBCache = (1 << 21); // block tree db cache shouldn't be larger than 2 MiB
     nTotalCache -= nBlockTreeDBCache;
     int64_t nCoinDBCache = std::min(nTotalCache / 2, (nTotalCache / 4) + (1 << 23)); // use 25%-50% of the remainder for disk cache
@@ -1297,13 +1355,13 @@ 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)) {
+                if (fTxIndex != GetBoolArg("-txindex", DEFAULT_TXINDEX)) {
                     strLoadError = _("You need to rebuild the database using -reindex to change -txindex");
                     break;
                 }
@@ -1332,7 +1390,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                     }
                 }
 
-                if (!CVerifyDB().VerifyDB(pcoinsdbview, GetArg("-checklevel", DEFAULT_CHECKLEVEL),
+                if (!CVerifyDB().VerifyDB(chainparams, pcoinsdbview, GetArg("-checklevel", DEFAULT_CHECKLEVEL),
                               GetArg("-checkblocks", DEFAULT_CHECKBLOCKS))) {
                     strLoadError = _("Corrupted block database detected");
                     break;
@@ -1529,7 +1587,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
                 }
             }
         }
-        pwalletMain->SetBroadcastTransactions(GetBoolArg("-walletbroadcast", true));
+        pwalletMain->SetBroadcastTransactions(GetBoolArg("-walletbroadcast", DEFAULT_WALLETBROADCAST));
     } // (!fDisableWallet)
 #else // ENABLE_WALLET
     LogPrintf("No wallet support compiled in!\n");
@@ -1556,7 +1614,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     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))
+    if (!ActivateBestChain(state, chainparams))
         strErrors << "Failed to connect best block";
 
     std::vector<boost::filesystem::path> vImportFiles;
@@ -1603,7 +1661,7 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
     scheduler.scheduleEvery(f, nPowTargetSpacing);
 
     // Generate coins in the background
-    GenerateBitcoins(GetBoolArg("-gen", false), GetArg("-genproclimit", DEFAULT_GENERATE_THREADS), chainparams);
+    GenerateBitcoins(GetBoolArg("-gen", DEFAULT_GENERATE), GetArg("-genproclimit", DEFAULT_GENERATE_THREADS), chainparams);
 
     // ********************************************************* Step 12: finished