text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin developers
  // Copyright (c) 2014-2015 The Dash developers
  // Copyright (c) 2015-2017 The PIVX developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "rpcserver.h"
  
  #include "base58.h"
  #include "init.h"
  #include "main.h"
  #include "ui_interface.h"
  #include "util.h"
  #ifdef ENABLE_WALLET
  #include "wallet.h"
  #endif
  
  #include <boost/algorithm/string.hpp>
  #include <boost/asio.hpp>
  #include <boost/asio/ssl.hpp>
  #include <boost/bind.hpp>
  #include <boost/filesystem.hpp>
  #include <boost/foreach.hpp>
  #include <boost/iostreams/concepts.hpp>
  #include <boost/iostreams/stream.hpp>
  #include <boost/shared_ptr.hpp>
  #include <boost/thread.hpp>
  
  #include <univalue.h>
  
  using namespace boost;
  using namespace boost::asio;
  using namespace std;
  
  static std::string strRPCUserColonPass;
  
  static bool fRPCRunning = false;
  static bool fRPCInWarmup = true;
  static std::string rpcWarmupStatus("RPC server started");
  static CCriticalSection cs_rpcWarmup;
  
  //! These are created by StartRPCThreads, destroyed in StopRPCThreads
  static asio::io_service* rpc_io_service = NULL;
  static map<string, boost::shared_ptr<deadline_timer> > deadlineTimers;
  static ssl::context* rpc_ssl_context = NULL;
  static boost::thread_group* rpc_worker_group = NULL;
  static boost::asio::io_service::work* rpc_dummy_work = NULL;
  static std::vector<CSubNet> rpc_allow_subnets; //!< List of subnets to allow RPC connections from
  static std::vector<boost::shared_ptr<ip::tcp::acceptor> > rpc_acceptors;
  
  void RPCTypeCheck(const UniValue& params,
                    const list<UniValue::VType>& typesExpected,
                    bool fAllowNull)
  {
      unsigned int i = 0;
      BOOST_FOREACH(UniValue::VType t, typesExpected) {
          if (params.size() <= i)
              break;
  
          const UniValue& v = params[i];
          if (!((v.type() == t) || (fAllowNull && (v.isNull())))) {
              string err = strprintf("Expected type %s, got %s",
                                     uvTypeName(t), uvTypeName(v.type()));
              throw JSONRPCError(RPC_TYPE_ERROR, err);
          }
          i++;
      }
  }
  
  void RPCTypeCheckObj(const UniValue& o,
                    const map<string, UniValue::VType>& typesExpected,
                    bool fAllowNull)
  {
      BOOST_FOREACH(const PAIRTYPE(string, UniValue::VType)& t, typesExpected) {
          const UniValue& v = find_value(o, t.first);
          if (!fAllowNull && v.isNull())
              throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
  
          if (!((v.type() == t.second) || (fAllowNull && (v.isNull())))) {
              string err = strprintf("Expected type %s for %s, got %s",
                                     uvTypeName(t.second), t.first, uvTypeName(v.type()));
              throw JSONRPCError(RPC_TYPE_ERROR, err);
          }
      }
  }
  
  static inline int64_t roundint64(double d)
  {
      return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
  }
  
  CAmount AmountFromValue(const UniValue& value)
  {
      double dAmount = value.get_real();
      if (dAmount <= 0.0 || dAmount > 21000000.0)
          throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
      CAmount nAmount = roundint64(dAmount * COIN);
      if (!MoneyRange(nAmount))
          throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
      return nAmount;
  }
  
  UniValue ValueFromAmount(const CAmount& amount)
  {
      bool sign = amount < 0;
      int64_t n_abs = (sign ? -amount : amount);
      int64_t quotient = n_abs / COIN;
      int64_t remainder = n_abs % COIN;
      return UniValue(UniValue::VNUM,
              strprintf("%s%d.%08d", sign ? "-" : "", quotient, remainder));
  }
  
  uint256 ParseHashV(const UniValue& v, string strName)
  {
      string strHex;
      if (v.isStr())
          strHex = v.get_str();
      if (!IsHex(strHex)) // Note: IsHex("") is false
          throw JSONRPCError(RPC_INVALID_PARAMETER, strName + " must be hexadecimal string (not '" + strHex + "')");
      uint256 result;
      result.SetHex(strHex);
      return result;
  }
  uint256 ParseHashO(const UniValue& o, string strKey)
  {
      return ParseHashV(find_value(o, strKey), strKey);
  }
  vector<unsigned char> ParseHexV(const UniValue& v, string strName)
  {
      string strHex;
      if (v.isStr())
          strHex = v.get_str();
      if (!IsHex(strHex))
          throw JSONRPCError(RPC_INVALID_PARAMETER, strName + " must be hexadecimal string (not '" + strHex + "')");
      return ParseHex(strHex);
  }
  vector<unsigned char> ParseHexO(const UniValue& o, string strKey)
  {
      return ParseHexV(find_value(o, strKey), strKey);
  }
  
  int ParseInt(const UniValue& o, string strKey)
  {
      const UniValue& v = find_value(o, strKey);
      if (v.isNum())
          throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, " + strKey + "is not an int");
  
      return v.get_int();
  }
  
  bool ParseBool(const UniValue& o, string strKey)
  {
      const UniValue& v = find_value(o, strKey);
      if (v.isBool())
          throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, " + strKey + "is not a bool");
  
      return v.get_bool();
  }
  
  
  /**
   * Note: This interface may still be subject to change.
   */
  
  string CRPCTable::help(string strCommand) const
  {
      string strRet;
      string category;
      set<rpcfn_type> setDone;
      vector<pair<string, const CRPCCommand*> > vCommands;
  
      for (map<string, const CRPCCommand*>::const_iterator mi = mapCommands.begin(); mi != mapCommands.end(); ++mi)
          vCommands.push_back(make_pair(mi->second->category + mi->first, mi->second));
      sort(vCommands.begin(), vCommands.end());
  
      BOOST_FOREACH (const PAIRTYPE(string, const CRPCCommand*) & command, vCommands) {
          const CRPCCommand* pcmd = command.second;
          string strMethod = pcmd->name;
          // We already filter duplicates, but these deprecated screw up the sort order
          if (strMethod.find("label") != string::npos)
              continue;
          if ((strCommand != "" || pcmd->category == "hidden") && strMethod != strCommand)
              continue;
  #ifdef ENABLE_WALLET
          if (pcmd->reqWallet && !pwalletMain)
              continue;
  #endif
  
          try {
              UniValue params;
              rpcfn_type pfn = pcmd->actor;
              if (setDone.insert(pfn).second)
                  (*pfn)(params, true);
          } catch (std::exception& e) {
              // Help text is returned in an exception
              string strHelp = string(e.what());
              if (strCommand == "") {
                  if (strHelp.find('\n') != string::npos)
                      strHelp = strHelp.substr(0, strHelp.find('\n'));
  
                  if (category != pcmd->category) {
                      if (!category.empty())
                          strRet += "\n";
                      category = pcmd->category;
                      string firstLetter = category.substr(0, 1);
                      boost::to_upper(firstLetter);
                      strRet += "== " + firstLetter + category.substr(1) + " ==\n";
                  }
              }
              strRet += strHelp + "\n";
          }
      }
      if (strRet == "")
          strRet = strprintf("help: unknown command: %s\n", strCommand);
      strRet = strRet.substr(0, strRet.size() - 1);
      return strRet;
  }
  
  UniValue help(const UniValue& params, bool fHelp)
  {
      if (fHelp || params.size() > 1)
          throw runtime_error(
              "help ( \"command\" )\n"
              "\nList all commands, or get help for a specified command.\n"
              "\nArguments:\n"
              "1. \"command\"     (string, optional) The command to get help on\n"
              "\nResult:\n"
              "\"text\"     (string) The help text\n");
  
      string strCommand;
      if (params.size() > 0)
          strCommand = params[0].get_str();
  
      return tableRPC.help(strCommand);
  }
  
  
  UniValue stop(const UniValue& params, bool fHelp)
  {
      // Accept the deprecated and ignored 'detach' boolean argument
      if (fHelp || params.size() > 1)
          throw runtime_error(
              "stop\n"
              "\nStop New808coin server.");
      // Shutdown will take long enough that the response should get back
      StartShutdown();
      return "New808coin server stopping";
  }
  
  
  /**
   * Call Table
   */
  static const CRPCCommand vRPCCommands[] =
      {
          //  category              name                      actor (function)         okSafeMode threadSafe reqWallet
          //  --------------------- ------------------------  -----------------------  ---------- ---------- ---------
          /* Overall control/query calls */
          {"control", "getinfo", &getinfo, true, false, false}, /* uses wallet if enabled */
          {"control", "help", &help, true, true, false},
          {"control", "stop", &stop, true, true, false},
  
          /* P2P networking */
          {"network", "getnetworkinfo", &getnetworkinfo, true, false, false},
          {"network", "addnode", &addnode, true, true, false},
          {"network", "disconnectnode", &disconnectnode, true, true, false},
          {"network", "getaddednodeinfo", &getaddednodeinfo, true, true, false},
          {"network", "getconnectioncount", &getconnectioncount, true, false, false},
          {"network", "getnettotals", &getnettotals, true, true, false},
          {"network", "getpeerinfo", &getpeerinfo, true, false, false},
          {"network", "ping", &ping, true, false, false},
          {"network", "setban", &setban, true, false, false},
          {"network", "listbanned", &listbanned, true, false, false},
          {"network", "clearbanned", &clearbanned, true, false, false},
  
          /* Block chain and UTXO */
          {"blockchain", "getblockchaininfo", &getblockchaininfo, true, false, false},
          {"blockchain", "getbestblockhash", &getbestblockhash, true, false, false},
          {"blockchain", "getblockcount", &getblockcount, true, false, false},
          {"blockchain", "getblock", &getblock, true, false, false},
          {"blockchain", "getblockhash", &getblockhash, true, false, false},
          {"blockchain", "getblockheader", &getblockheader, false, false, false},
          {"blockchain", "getchaintips", &getchaintips, true, false, false},
          {"blockchain", "getdifficulty", &getdifficulty, true, false, false},
          {"blockchain", "getfeeinfo", &getfeeinfo, true, false, false},
          {"blockchain", "getmempoolinfo", &getmempoolinfo, true, true, false},
          {"blockchain", "getrawmempool", &getrawmempool, true, false, false},
          {"blockchain", "gettxout", &gettxout, true, false, false},
          {"blockchain", "gettxoutsetinfo", &gettxoutsetinfo, true, false, false},
          {"blockchain", "invalidateblock", &invalidateblock, true, true, false},
          {"blockchain", "reconsiderblock", &reconsiderblock, true, true, false},
          {"blockchain", "verifychain", &verifychain, true, false, false},
  
          /* Mining */
          {"mining", "getblocktemplate", &getblocktemplate, true, false, false},
          {"mining", "getmininginfo", &getmininginfo, true, false, false},
          {"mining", "getnetworkhashps", &getnetworkhashps, true, false, false},
          {"mining", "prioritisetransaction", &prioritisetransaction, true, false, false},
          {"mining", "submitblock", &submitblock, true, true, false},
          {"mining", "reservebalance", &reservebalance, true, true, false},
  
  #ifdef ENABLE_WALLET
          /* Coin generation */
          {"generating", "getgenerate", &getgenerate, true, false, false},
          {"generating", "gethashespersec", &gethashespersec, true, false, false},
          {"generating", "setgenerate", &setgenerate, true, true, false},
  #endif
  
          /* Raw transactions */
          {"rawtransactions", "createrawtransaction", &createrawtransaction, true, false, false},
          {"rawtransactions", "decoderawtransaction", &decoderawtransaction, true, false, false},
          {"rawtransactions", "decodescript", &decodescript, true, false, false},
          {"rawtransactions", "getrawtransaction", &getrawtransaction, true, false, false},
          {"rawtransactions", "sendrawtransaction", &sendrawtransaction, false, false, false},
          {"rawtransactions", "signrawtransaction", &signrawtransaction, false, false, false}, /* uses wallet if enabled */
  
          /* Utility functions */
          {"util", "createmultisig", &createmultisig, true, true, false},
          {"util", "validateaddress", &validateaddress, true, false, false}, /* uses wallet if enabled */
          {"util", "verifymessage", &verifymessage, true, false, false},
          {"util", "estimatefee", &estimatefee, true, true, false},
          {"util", "estimatepriority", &estimatepriority, true, true, false},
  
          /* Not shown in help */
          {"hidden", "invalidateblock", &invalidateblock, true, true, false},
          {"hidden", "reconsiderblock", &reconsiderblock, true, true, false},
          {"hidden", "setmocktime", &setmocktime, true, false, false},
  
          /* New808coin features */
          {"new808coin", "masternode", &masternode, true, true, false},
          {"new808coin", "listmasternodes", &listmasternodes, true, true, false},
          {"new808coin", "getmasternodecount", &getmasternodecount, true, true, false},
          {"new808coin", "masternodeconnect", &masternodeconnect, true, true, false},
          {"new808coin", "masternodecurrent", &masternodecurrent, true, true, false},
          {"new808coin", "masternodedebug", &masternodedebug, true, true, false},
          {"new808coin", "startmasternode", &startmasternode, true, true, false},
          {"new808coin", "createmasternodekey", &createmasternodekey, true, true, false},
          {"new808coin", "getmasternodeoutputs", &getmasternodeoutputs, true, true, false},
          {"new808coin", "listmasternodeconf", &listmasternodeconf, true, true, false},
          {"new808coin", "getmasternodestatus", &getmasternodestatus, true, true, false},
          {"new808coin", "getmasternodewinners", &getmasternodewinners, true, true, false},
          {"new808coin", "getmasternodescores", &getmasternodescores, true, true, false},
          {"new808coin", "mnbudget", &mnbudget, true, true, false},
          {"new808coin", "preparebudget", &preparebudget, true, true, false},
          {"new808coin", "submitbudget", &submitbudget, true, true, false},
          {"new808coin", "mnbudgetvote", &mnbudgetvote, true, true, false},
          {"new808coin", "getbudgetvotes", &getbudgetvotes, true, true, false},
          {"new808coin", "getnextsuperblock", &getnextsuperblock, true, true, false},
          {"new808coin", "getbudgetprojection", &getbudgetprojection, true, true, false},
          {"new808coin", "getbudgetinfo", &getbudgetinfo, true, true, false},
          {"new808coin", "mnbudgetrawvote", &mnbudgetrawvote, true, true, false},
          {"new808coin", "mnfinalbudget", &mnfinalbudget, true, true, false},
          {"new808coin", "checkbudgets", &checkbudgets, true, true, false},
          {"new808coin", "mnsync", &mnsync, true, true, false},
          {"new808coin", "spork", &spork, true, true, false},
  #ifdef ENABLE_WALLET
  
          /* Wallet */
          {"wallet", "addmultisigaddress", &addmultisigaddress, true, false, true},
          {"wallet", "autocombinerewards", &autocombinerewards, false, false, true},
          {"wallet", "backupwallet", &backupwallet, true, false, true},
          {"wallet", "dumpprivkey", &dumpprivkey, true, false, true},
          {"wallet", "dumpwallet", &dumpwallet, true, false, true},
          {"wallet", "bip38encrypt", &bip38encrypt, true, false, true},
          {"wallet", "bip38decrypt", &bip38decrypt, true, false, true},
          {"wallet", "encryptwallet", &encryptwallet, true, false, true},
          {"wallet", "getaccountaddress", &getaccountaddress, true, false, true},
          {"wallet", "getaccount", &getaccount, true, false, true},
          {"wallet", "getaddressesbyaccount", &getaddressesbyaccount, true, false, true},
          {"wallet", "getbalance", &getbalance, false, false, true},
          {"wallet", "getnewaddress", &getnewaddress, true, false, true},
          {"wallet", "getrawchangeaddress", &getrawchangeaddress, true, false, true},
          {"wallet", "getreceivedbyaccount", &getreceivedbyaccount, false, false, true},
          {"wallet", "getreceivedbyaddress", &getreceivedbyaddress, false, false, true},
          {"wallet", "getstakingstatus", &getstakingstatus, false, false, true},
          {"wallet", "getstakesplitthreshold", &getstakesplitthreshold, false, false, true},
          {"wallet", "gettransaction", &gettransaction, false, false, true},
          {"wallet", "getunconfirmedbalance", &getunconfirmedbalance, false, false, true},
          {"wallet", "getwalletinfo", &getwalletinfo, false, false, true},
          {"wallet", "importprivkey", &importprivkey, true, false, true},
          {"wallet", "importwallet", &importwallet, true, false, true},
          {"wallet", "importaddress", &importaddress, true, false, true},
          {"wallet", "keypoolrefill", &keypoolrefill, true, false, true},
          {"wallet", "listaccounts", &listaccounts, false, false, true},
          {"wallet", "listaddressgroupings", &listaddressgroupings, false, false, true},
          {"wallet", "listlockunspent", &listlockunspent, false, false, true},
          {"wallet", "listreceivedbyaccount", &listreceivedbyaccount, false, false, true},
          {"wallet", "listreceivedbyaddress", &listreceivedbyaddress, false, false, true},
          {"wallet", "listsinceblock", &listsinceblock, false, false, true},
          {"wallet", "listtransactions", &listtransactions, false, false, true},
          {"wallet", "listunspent", &listunspent, false, false, true},
          {"wallet", "lockunspent", &lockunspent, true, false, true},
          {"wallet", "move", &movecmd, false, false, true},
          {"wallet", "multisend", &multisend, false, false, true},
          {"wallet", "sendfrom", &sendfrom, false, false, true},
          {"wallet", "sendmany", &sendmany, false, false, true},
          {"wallet", "sendtoaddress", &sendtoaddress, false, false, true},
          {"wallet", "sendtoaddressix", &sendtoaddressix, false, false, true},
          {"wallet", "setaccount", &setaccount, true, false, true},
          {"wallet", "setstakesplitthreshold", &setstakesplitthreshold, false, false, true},
          {"wallet", "settxfee", &settxfee, true, false, true},
          {"wallet", "signmessage", &signmessage, true, false, true},
          {"wallet", "walletlock", &walletlock, true, false, true},
          {"wallet", "walletpassphrasechange", &walletpassphrasechange, true, false, true},
          {"wallet", "walletpassphrase", &walletpassphrase, true, false, true},
  #endif // ENABLE_WALLET
  };
  
  CRPCTable::CRPCTable()
  {
      unsigned int vcidx;
      for (vcidx = 0; vcidx < (sizeof(vRPCCommands) / sizeof(vRPCCommands[0])); vcidx++) {
          const CRPCCommand* pcmd;
  
          pcmd = &vRPCCommands[vcidx];
          mapCommands[pcmd->name] = pcmd;
      }
  }
  
  const CRPCCommand* CRPCTable::operator[](string name) const
  {
      map<string, const CRPCCommand*>::const_iterator it = mapCommands.find(name);
      if (it == mapCommands.end())
          return NULL;
      return (*it).second;
  }
  
  
  bool HTTPAuthorized(map<string, string>& mapHeaders)
  {
      string strAuth = mapHeaders["authorization"];
      if (strAuth.substr(0, 6) != "Basic ")
          return false;
      string strUserPass64 = strAuth.substr(6);
      boost::trim(strUserPass64);
      string strUserPass = DecodeBase64(strUserPass64);
      return TimingResistantEqual(strUserPass, strRPCUserColonPass);
  }
  
  void ErrorReply(std::ostream& stream, const UniValue& objError, const UniValue& id)
  {
      // Send error reply from json-rpc error object
      int nStatus = HTTP_INTERNAL_SERVER_ERROR;
      int code = find_value(objError, "code").get_int();
      if (code == RPC_INVALID_REQUEST)
          nStatus = HTTP_BAD_REQUEST;
      else if (code == RPC_METHOD_NOT_FOUND)
          nStatus = HTTP_NOT_FOUND;
      string strReply = JSONRPCReply(NullUniValue, objError, id);
      stream << HTTPReply(nStatus, strReply, false) << std::flush;
  }
  
  CNetAddr BoostAsioToCNetAddr(boost::asio::ip::address address)
  {
      CNetAddr netaddr;
      // Make sure that IPv4-compatible and IPv4-mapped IPv6 addresses are treated as IPv4 addresses
      if (address.is_v6() && (address.to_v6().is_v4_compatible() || address.to_v6().is_v4_mapped()))
          address = address.to_v6().to_v4();
  
      if (address.is_v4()) {
          boost::asio::ip::address_v4::bytes_type bytes = address.to_v4().to_bytes();
          netaddr.SetRaw(NET_IPV4, &bytes[0]);
      } else {
          boost::asio::ip::address_v6::bytes_type bytes = address.to_v6().to_bytes();
          netaddr.SetRaw(NET_IPV6, &bytes[0]);
      }
      return netaddr;
  }
  
  bool ClientAllowed(const boost::asio::ip::address& address)
  {
      CNetAddr netaddr = BoostAsioToCNetAddr(address);
      BOOST_FOREACH (const CSubNet& subnet, rpc_allow_subnets)
          if (subnet.Match(netaddr))
              return true;
      return false;
  }
  
  template <typename Protocol>
  class AcceptedConnectionImpl : public AcceptedConnection
  {
  public:
      AcceptedConnectionImpl(
          asio::io_service& io_service,
          ssl::context& context,
          bool fUseSSL) : sslStream(io_service, context),
                          _d(sslStream, fUseSSL),
                          _stream(_d)
      {
      }
  
      virtual std::iostream& stream()
      {
          return _stream;
      }
  
      virtual std::string peer_address_to_string() const
      {
          return peer.address().to_string();
      }
  
      virtual void close()
      {
          _stream.close();
      }
  
      typename Protocol::endpoint peer;
      asio::ssl::stream<typename Protocol::socket> sslStream;
  
  private:
      SSLIOStreamDevice<Protocol> _d;
      iostreams::stream<SSLIOStreamDevice<Protocol> > _stream;
  };
  
  void ServiceConnection(AcceptedConnection* conn);
  
  //! Forward declaration required for RPCListen
  template <typename Protocol, typename SocketAcceptorService>
  static void RPCAcceptHandler(boost::shared_ptr<basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
      ssl::context& context,
      bool fUseSSL,
      boost::shared_ptr<AcceptedConnection> conn,
      const boost::system::error_code& error);
  
  /**
   * Sets up I/O resources to accept and handle a new connection.
   */
  template <typename Protocol, typename SocketAcceptorService>
  static void RPCListen(boost::shared_ptr<basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
      ssl::context& context,
      const bool fUseSSL)
  {
      // Accept connection
      boost::shared_ptr<AcceptedConnectionImpl<Protocol> > conn(new AcceptedConnectionImpl<Protocol>(acceptor->get_io_service(), context, fUseSSL));
  
      acceptor->async_accept(
          conn->sslStream.lowest_layer(),
          conn->peer,
          boost::bind(&RPCAcceptHandler<Protocol, SocketAcceptorService>,
              acceptor,
              boost::ref(context),
              fUseSSL,
              conn,
              _1));
  }
  
  
  /**
   * Accept and handle incoming connection.
   */
  template <typename Protocol, typename SocketAcceptorService>
  static void RPCAcceptHandler(boost::shared_ptr<basic_socket_acceptor<Protocol, SocketAcceptorService> > acceptor,
      ssl::context& context,
      const bool fUseSSL,
      boost::shared_ptr<AcceptedConnection> conn,
      const boost::system::error_code& error)
  {
      // Immediately start accepting new connections, except when we're cancelled or our socket is closed.
      if (error != asio::error::operation_aborted && acceptor->is_open())
          RPCListen(acceptor, context, fUseSSL);
  
      AcceptedConnectionImpl<ip::tcp>* tcp_conn = dynamic_cast<AcceptedConnectionImpl<ip::tcp>*>(conn.get());
  
      if (error) {
          // TODO: Actually handle errors
          LogPrintf("%s: Error: %s\n", __func__, error.message());
      }
      // Restrict callers by IP.  It is important to
      // do this before starting client thread, to filter out
      // certain DoS and misbehaving clients.
      else if (tcp_conn && !ClientAllowed(tcp_conn->peer.address())) {
          // Only send a 403 if we're not using SSL to prevent a DoS during the SSL handshake.
          if (!fUseSSL)
              conn->stream() << HTTPError(HTTP_FORBIDDEN, false) << std::flush;
          conn->close();
      } else {
          ServiceConnection(conn.get());
          conn->close();
      }
  }
  
  static ip::tcp::endpoint ParseEndpoint(const std::string& strEndpoint, int defaultPort)
  {
      std::string addr;
      int port = defaultPort;
      SplitHostPort(strEndpoint, port, addr);
      return ip::tcp::endpoint(asio::ip::address::from_string(addr), port);
  }
  
  void StartRPCThreads()
  {
      rpc_allow_subnets.clear();
      rpc_allow_subnets.push_back(CSubNet("127.0.0.0/8")); // always allow IPv4 local subnet
      rpc_allow_subnets.push_back(CSubNet("::1"));         // always allow IPv6 localhost
      if (mapMultiArgs.count("-rpcallowip")) {
          const vector<string>& vAllow = mapMultiArgs["-rpcallowip"];
          BOOST_FOREACH (string strAllow, vAllow) {
              CSubNet subnet(strAllow);
              if (!subnet.IsValid()) {
                  uiInterface.ThreadSafeMessageBox(
                      strprintf("Invalid -rpcallowip subnet specification: %s. Valid 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).", strAllow),
                      "", CClientUIInterface::MSG_ERROR);
                  StartShutdown();
                  return;
              }
              rpc_allow_subnets.push_back(subnet);
          }
      }
      std::string strAllowed;
      BOOST_FOREACH (const CSubNet& subnet, rpc_allow_subnets)
          strAllowed += subnet.ToString() + " ";
      LogPrint("rpc", "Allowing RPC connections from: %s\n", strAllowed);
  
      if (mapArgs["-rpcpassword"] == "") {
          LogPrintf("No rpcpassword set - using random cookie authentication\n");
          if (!GenerateAuthCookie(&strRPCUserColonPass)) {
              uiInterface.ThreadSafeMessageBox(
                  _("Error: A fatal internal error occured, see debug.log for details"), // Same message as AbortNode
                  "", CClientUIInterface::MSG_ERROR);
              StartShutdown();
              return;
          }
      } else {
          strRPCUserColonPass = mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"];
      }
  
      assert(rpc_io_service == NULL);
      rpc_io_service = new asio::io_service();
      rpc_ssl_context = new ssl::context(*rpc_io_service, ssl::context::sslv23);
  
      const bool fUseSSL = GetBoolArg("-rpcssl", false);
  
      if (fUseSSL) {
          rpc_ssl_context->set_options(ssl::context::no_sslv2 | ssl::context::no_sslv3);
  
          filesystem::path pathCertFile(GetArg("-rpcsslcertificatechainfile", "server.cert"));
          if (!pathCertFile.is_complete()) pathCertFile = filesystem::path(GetDataDir()) / pathCertFile;
          if (filesystem::exists(pathCertFile))
              rpc_ssl_context->use_certificate_chain_file(pathCertFile.string());
          else
              LogPrintf("ThreadRPCServer ERROR: missing server certificate file %s\n", pathCertFile.string());
  
          filesystem::path pathPKFile(GetArg("-rpcsslprivatekeyfile", "server.pem"));
          if (!pathPKFile.is_complete()) pathPKFile = filesystem::path(GetDataDir()) / pathPKFile;
          if (filesystem::exists(pathPKFile))
              rpc_ssl_context->use_private_key_file(pathPKFile.string(), ssl::context::pem);
          else
              LogPrintf("ThreadRPCServer ERROR: missing server private key file %s\n", pathPKFile.string());
  
          string strCiphers = GetArg("-rpcsslciphers", "TLSv1.2+HIGH:TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:@STRENGTH");
          SSL_CTX_set_cipher_list(rpc_ssl_context->impl(), strCiphers.c_str());
      }
  
      std::vector<ip::tcp::endpoint> vEndpoints;
      bool bBindAny = false;
      int defaultPort = GetArg("-rpcport", BaseParams().RPCPort());
      if (!mapArgs.count("-rpcallowip")) // Default to loopback if not allowing external IPs
      {
          vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::loopback(), defaultPort));
          vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::loopback(), defaultPort));
          if (mapArgs.count("-rpcbind")) {
              LogPrintf("WARNING: option -rpcbind was ignored because -rpcallowip was not specified, refusing to allow everyone to connect\n");
          }
      } else if (mapArgs.count("-rpcbind")) // Specific bind address
      {
          BOOST_FOREACH (const std::string& addr, mapMultiArgs["-rpcbind"]) {
              try {
                  vEndpoints.push_back(ParseEndpoint(addr, defaultPort));
              } catch (const boost::system::system_error&) {
                  uiInterface.ThreadSafeMessageBox(
                      strprintf(_("Could not parse -rpcbind value %s as network address"), addr),
                      "", CClientUIInterface::MSG_ERROR);
                  StartShutdown();
                  return;
              }
          }
      } else { // No specific bind address specified, bind to any
          vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v6::any(), defaultPort));
          vEndpoints.push_back(ip::tcp::endpoint(asio::ip::address_v4::any(), defaultPort));
          // Prefer making the socket dual IPv6/IPv4 instead of binding
          // to both addresses seperately.
          bBindAny = true;
      }
  
      bool fListening = false;
      std::string strerr;
      std::string straddress;
      BOOST_FOREACH (const ip::tcp::endpoint& endpoint, vEndpoints) {
          try {
              asio::ip::address bindAddress = endpoint.address();
              straddress = bindAddress.to_string();
              LogPrintf("Binding RPC on address %s port %i (IPv4+IPv6 bind any: %i)\n", straddress, endpoint.port(), bBindAny);
              boost::system::error_code v6_only_error;
              boost::shared_ptr<ip::tcp::acceptor> acceptor(new ip::tcp::acceptor(*rpc_io_service));
  
              acceptor->open(endpoint.protocol());
              acceptor->set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
  
              // Try making the socket dual IPv6/IPv4 when listening on the IPv6 "any" address
              acceptor->set_option(boost::asio::ip::v6_only(
                                       !bBindAny || bindAddress != asio::ip::address_v6::any()),
                  v6_only_error);
  
              acceptor->bind(endpoint);
              acceptor->listen(socket_base::max_connections);
  
              RPCListen(acceptor, *rpc_ssl_context, fUseSSL);
  
              rpc_acceptors.push_back(acceptor);
              fListening = true;
              rpc_acceptors.push_back(acceptor);
              // If dual IPv6/IPv4 bind successful, skip binding to IPv4 separately
              if (bBindAny && bindAddress == asio::ip::address_v6::any() && !v6_only_error)
                  break;
          } catch (boost::system::system_error& e) {
              LogPrintf("ERROR: Binding RPC on address %s port %i failed: %s\n", straddress, endpoint.port(), e.what());
              strerr = strprintf(_("An error occurred while setting up the RPC address %s port %u for listening: %s"), straddress, endpoint.port(), e.what());
          }
      }
  
      if (!fListening) {
          uiInterface.ThreadSafeMessageBox(strerr, "", CClientUIInterface::MSG_ERROR);
          StartShutdown();
          return;
      }
  
      rpc_worker_group = new boost::thread_group();
      for (int i = 0; i < GetArg("-rpcthreads", 4); i++)
          rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
      fRPCRunning = true;
  }
  
  void StartDummyRPCThread()
  {
      if (rpc_io_service == NULL) {
          rpc_io_service = new asio::io_service();
          /* Create dummy "work" to keep the thread from exiting when no timeouts active,
           * see http://www.boost.org/doc/libs/1_51_0/doc/html/boost_asio/reference/io_service.html#boost_asio.reference.io_service.stopping_the_io_service_from_running_out_of_work */
          rpc_dummy_work = new asio::io_service::work(*rpc_io_service);
          rpc_worker_group = new boost::thread_group();
          rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service));
          fRPCRunning = true;
      }
  }
  
  void StopRPCThreads()
  {
      if (rpc_io_service == NULL) return;
      // Set this to false first, so that longpolling loops will exit when woken up
      fRPCRunning = false;
  
      // First, cancel all timers and acceptors
      // This is not done automatically by ->stop(), and in some cases the destructor of
      // asio::io_service can hang if this is skipped.
      boost::system::error_code ec;
      BOOST_FOREACH (const boost::shared_ptr<ip::tcp::acceptor>& acceptor, rpc_acceptors) {
          acceptor->cancel(ec);
          if (ec)
              LogPrintf("%s: Warning: %s when cancelling acceptor", __func__, ec.message());
      }
      rpc_acceptors.clear();
      BOOST_FOREACH (const PAIRTYPE(std::string, boost::shared_ptr<deadline_timer>) & timer, deadlineTimers) {
          timer.second->cancel(ec);
          if (ec)
              LogPrintf("%s: Warning: %s when cancelling timer", __func__, ec.message());
      }
      deadlineTimers.clear();
  
      DeleteAuthCookie();
  
      rpc_io_service->stop();
      cvBlockChange.notify_all();
      if (rpc_worker_group != NULL)
          rpc_worker_group->join_all();
      delete rpc_dummy_work;
      rpc_dummy_work = NULL;
      delete rpc_worker_group;
      rpc_worker_group = NULL;
      delete rpc_ssl_context;
      rpc_ssl_context = NULL;
      delete rpc_io_service;
      rpc_io_service = NULL;
  }
  
  bool IsRPCRunning()
  {
      return fRPCRunning;
  }
  
  void SetRPCWarmupStatus(const std::string& newStatus)
  {
      LOCK(cs_rpcWarmup);
      rpcWarmupStatus = newStatus;
  }
  
  void SetRPCWarmupFinished()
  {
      LOCK(cs_rpcWarmup);
      assert(fRPCInWarmup);
      fRPCInWarmup = false;
  }
  
  bool RPCIsInWarmup(std::string* outStatus)
  {
      LOCK(cs_rpcWarmup);
      if (outStatus)
          *outStatus = rpcWarmupStatus;
      return fRPCInWarmup;
  }
  
  void RPCRunHandler(const boost::system::error_code& err, boost::function<void(void)> func)
  {
      if (!err)
          func();
  }
  
  void RPCRunLater(const std::string& name, boost::function<void(void)> func, int64_t nSeconds)
  {
      assert(rpc_io_service != NULL);
  
      if (deadlineTimers.count(name) == 0) {
          deadlineTimers.insert(make_pair(name,
              boost::shared_ptr<deadline_timer>(new deadline_timer(*rpc_io_service))));
      }
      deadlineTimers[name]->expires_from_now(posix_time::seconds(nSeconds));
      deadlineTimers[name]->async_wait(boost::bind(RPCRunHandler, _1, func));
  }
  
  class JSONRequest
  {
  public:
      UniValue id;
      string strMethod;
      UniValue params;
  
      JSONRequest() { id = NullUniValue; }
      void parse(const UniValue& valRequest);
  };
  
  void JSONRequest::parse(const UniValue& valRequest)
  {
      // Parse request
      if (!valRequest.isObject())
          throw JSONRPCError(RPC_INVALID_REQUEST, "Invalid Request object");
      const UniValue& request = valRequest.get_obj();
  
      // Parse id now so errors from here on will have the id
      id = find_value(request, "id");
  
      // Parse method
      UniValue valMethod = find_value(request, "method");
      if (valMethod.isNull())
          throw JSONRPCError(RPC_INVALID_REQUEST, "Missing method");
      if (!valMethod.isStr())
          throw JSONRPCError(RPC_INVALID_REQUEST, "Method must be a string");
      strMethod = valMethod.get_str();
      if (strMethod != "getblocktemplate")
          LogPrint("rpc", "ThreadRPCServer method=%s\n", SanitizeString(strMethod));
  
      // Parse params
      UniValue valParams = find_value(request, "params");
      if (valParams.isArray())
          params = valParams.get_array();
      else if (valParams.isNull())
          params = UniValue(UniValue::VARR);
      else
          throw JSONRPCError(RPC_INVALID_REQUEST, "Params must be an array");
  }
  
  
  static UniValue JSONRPCExecOne(const UniValue& req)
  {
      UniValue rpc_result(UniValue::VOBJ);
  
      JSONRequest jreq;
      try {
          jreq.parse(req);
  
          UniValue result = tableRPC.execute(jreq.strMethod, jreq.params);
          rpc_result = JSONRPCReplyObj(result, NullUniValue, jreq.id);
      } catch (const UniValue& objError) {
          rpc_result = JSONRPCReplyObj(NullUniValue, objError, jreq.id);
      } catch (std::exception& e) {
          rpc_result = JSONRPCReplyObj(NullUniValue,
              JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
      }
  
      return rpc_result;
  }
  
  static string JSONRPCExecBatch(const UniValue& vReq)
  {
      UniValue ret(UniValue::VARR);
      for (unsigned int reqIdx = 0; reqIdx < vReq.size(); reqIdx++)
          ret.push_back(JSONRPCExecOne(vReq[reqIdx]));
  
      return ret.write() + "\n";
  }
  
  static bool HTTPReq_JSONRPC(AcceptedConnection* conn,
      string& strRequest,
      map<string, string>& mapHeaders,
      bool fRun)
  {
      // Check authorization
      if (mapHeaders.count("authorization") == 0) {
          conn->stream() << HTTPError(HTTP_UNAUTHORIZED, false) << std::flush;
          return false;
      }
  
      if (!HTTPAuthorized(mapHeaders)) {
          LogPrintf("ThreadRPCServer incorrect password attempt from %s\n", conn->peer_address_to_string());
          /* Deter brute-forcing
             If this results in a DoS the user really
             shouldn't have their RPC port exposed. */
          MilliSleep(250);
  
          conn->stream() << HTTPError(HTTP_UNAUTHORIZED, false) << std::flush;
          return false;
      }
  
      JSONRequest jreq;
      try {
          // Parse request
          UniValue valRequest;
          if (!valRequest.read(strRequest))
              throw JSONRPCError(RPC_PARSE_ERROR, "Parse error");
  
          // Return immediately if in warmup
          {
              LOCK(cs_rpcWarmup);
              if (fRPCInWarmup)
                  throw JSONRPCError(RPC_IN_WARMUP, rpcWarmupStatus);
          }
  
          string strReply;
  
          // singleton request
          if (valRequest.isObject()) {
              jreq.parse(valRequest);
  
              UniValue result = tableRPC.execute(jreq.strMethod, jreq.params);
  
              // Send reply
              strReply = JSONRPCReply(result, NullUniValue, jreq.id);
  
          // array of requests
          } else if (valRequest.isArray())
              strReply = JSONRPCExecBatch(valRequest.get_array());
          else
              throw JSONRPCError(RPC_PARSE_ERROR, "Top-level object parse error");
  
          conn->stream() << HTTPReplyHeader(HTTP_OK, fRun, strReply.size()) << strReply << std::flush;
      } catch (const UniValue& objError) {
          ErrorReply(conn->stream(), objError, jreq.id);
          return false;
      } catch (std::exception& e) {
          ErrorReply(conn->stream(), JSONRPCError(RPC_PARSE_ERROR, e.what()), jreq.id);
          return false;
      }
      return true;
  }
  
  void ServiceConnection(AcceptedConnection* conn)
  {
      bool fRun = true;
      while (fRun && !ShutdownRequested()) {
          int nProto = 0;
          map<string, string> mapHeaders;
          string strRequest, strMethod, strURI;
  
          // Read HTTP request line
          if (!ReadHTTPRequestLine(conn->stream(), nProto, strMethod, strURI))
              break;
  
          // Read HTTP message headers and body
          ReadHTTPMessage(conn->stream(), mapHeaders, strRequest, nProto, MAX_SIZE);
  
          // HTTP Keep-Alive is false; close connection immediately
          if ((mapHeaders["connection"] == "close") || (!GetBoolArg("-rpckeepalive", true)))
              fRun = false;
  
          // Process via JSON-RPC API
          if (strURI == "/") {
              if (!HTTPReq_JSONRPC(conn, strRequest, mapHeaders, fRun))
                  break;
  
              // Process via HTTP REST API
          } else if (strURI.substr(0, 6) == "/rest/" && GetBoolArg("-rest", false)) {
              if (!HTTPReq_REST(conn, strURI, mapHeaders, fRun))
                  break;
  
          } else {
              conn->stream() << HTTPError(HTTP_NOT_FOUND, false) << std::flush;
              break;
          }
      }
  }
  
  UniValue CRPCTable::execute(const std::string &strMethod, const UniValue &params) const
  {
      // Find method
      const CRPCCommand* pcmd = tableRPC[strMethod];
      if (!pcmd)
          throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found");
  #ifdef ENABLE_WALLET
      if (pcmd->reqWallet && !pwalletMain)
          throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found (disabled)");
  #endif
  
      // Observe safe mode
      string strWarning = GetWarnings("rpc");
      if (strWarning != "" && !GetBoolArg("-disablesafemode", false) &&
          !pcmd->okSafeMode)
          throw JSONRPCError(RPC_FORBIDDEN_BY_SAFE_MODE, string("Safe mode: ") + strWarning);
  
      try {
          // Execute
          UniValue result;
          {
              if (pcmd->threadSafe)
                  result = pcmd->actor(params, false);
  #ifdef ENABLE_WALLET
              else if (!pwalletMain) {
                  LOCK(cs_main);
                  result = pcmd->actor(params, false);
              } else {
                  while (true) {
                      TRY_LOCK(cs_main, lockMain);
                      if (!lockMain) {
                          MilliSleep(50);
                          continue;
                      }
                      while (true) {
                          TRY_LOCK(pwalletMain->cs_wallet, lockWallet);
                          if (!lockMain) {
                              MilliSleep(50);
                              continue;
                          }
                          result = pcmd->actor(params, false);
                          break;
                      }
                      break;
                  }
              }
  #else  // ENABLE_WALLET
              else {
                  LOCK(cs_main);
                  result = pcmd->actor(params, false);
              }
  #endif // !ENABLE_WALLET
          }
          return result;
      } catch (std::exception& e) {
          throw JSONRPCError(RPC_MISC_ERROR, e.what());
      }
  }
  
  std::vector<std::string> CRPCTable::listCommands() const
  {
      std::vector<std::string> commandList;
      typedef std::map<std::string, const CRPCCommand*> commandMap;
  
      std::transform( mapCommands.begin(), mapCommands.end(),
                     std::back_inserter(commandList),
                     boost::bind(&commandMap::value_type::first,_1) );
      return commandList;
  }
  
  std::string HelpExampleCli(string methodname, string args)
  {
      return "> new808coin-cli " + methodname + " " + args + "\n";
  }
  
  std::string HelpExampleRpc(string methodname, string args)
  {
      return "> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", "
             "\"method\": \"" +
             methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;' http://127.0.0.1:8089/\n";
  }
  
  const CRPCTable tableRPC;
  