src/rpcmining.cpp

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2012 The Bitcoin developers
   3 // Distributed under the MIT/X11 software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "main.h"
   7 #include "db.h"
   8 #include "txdb.h"
   9 #include "init.h"
  10 #include "miner.h"
  11 #include "kernel.h"
  12 #include "bitcoinrpc.h"
  13
  14 using namespace json_spirit;
  15 using namespace std;
  16
  17 extern uint256 nPoWBase;
  18
  19 Value getsubsidy(const Array& params, bool fHelp)
  20 {
  21     if (fHelp || params.size() > 1)
  22         throw runtime_error(
  23             "getsubsidy [nTarget]\n"
  24             "Returns proof-of-work subsidy value for the specified value of target.");
  25
  26     unsigned int nBits = 0;
  27
  28     if (params.size() != 0)
  29     {
  30         CBigNum bnTarget(uint256(params[0].get_str()));
  31         nBits = bnTarget.GetCompact();
  32     }
  33     else
  34     {
  35         nBits = GetNextTargetRequired(pindexBest, false);
  36     }
  37
  38     return (uint64_t)GetProofOfWorkReward(nBits);
  39 }
  40
  41 Value getmininginfo(const Array& params, bool fHelp)
  42 {
  43     if (fHelp || params.size() != 0)
  44         throw runtime_error(
  45             "getmininginfo\n"
  46             "Returns an object containing mining-related information.");
  47
  48     float nKernelsRate = 0, nCoinDaysRate = 0;
  49     pwalletMain->GetStakeStats(nKernelsRate, nCoinDaysRate);
  50
  51     Object obj, diff, weight;
  52     obj.push_back(Pair("blocks",        (int)nBestHeight));
  53     obj.push_back(Pair("currentblocksize",(uint64_t)nLastBlockSize));
  54     obj.push_back(Pair("currentblocktx",(uint64_t)nLastBlockTx));
  55
  56     diff.push_back(Pair("proof-of-work",        GetDifficulty()));
  57     diff.push_back(Pair("proof-of-stake",       GetDifficulty(GetLastBlockIndex(pindexBest, true))));
  58     diff.push_back(Pair("search-interval",      (int)nLastCoinStakeSearchInterval));
  59     obj.push_back(Pair("difficulty",    diff));
  60
  61     obj.push_back(Pair("blockvalue",    (uint64_t)GetProofOfWorkReward(GetLastBlockIndex(pindexBest, false)->nBits)));
  62     obj.push_back(Pair("netmhashps",     GetPoWMHashPS()));
  63     obj.push_back(Pair("netstakeweight", GetPoSKernelPS()));
  64     obj.push_back(Pair("errors",        GetWarnings("statusbar")));
  65     obj.push_back(Pair("pooledtx",      (uint64_t)mempool.size()));
  66
  67     weight.push_back(Pair("kernelsrate",   nKernelsRate));
  68     weight.push_back(Pair("cdaysrate",   nCoinDaysRate));
  69     obj.push_back(Pair("stakestats", weight));
  70
  71     obj.push_back(Pair("stakeinterest",    (uint64_t)GetProofOfStakeReward(0, GetLastBlockIndex(pindexBest, true)->nBits, GetLastBlockIndex(pindexBest, true)->nTime, true)));
  72     obj.push_back(Pair("testnet",       fTestNet));
  73     return obj;
  74 }
  75
  76 Value scaninput(const Array& params, bool fHelp)
  77 {
  78     if (fHelp || params.size() > 4 || params.size() < 2)
  79         throw runtime_error(
  80             "scaninput <txid> <nout> [difficulty] [days]\n"
  81             "Scan specified input for suitable kernel solutions.\n"
  82             "    [difficulty] - upper limit for difficulty, current difficulty by default;\n"
  83             "    [days] - time window, 365 days by default.\n"
  84         );
  85
  86
  87     uint256 hash;
  88     hash.SetHex(params[0].get_str());
  89
  90     uint32_t nOut = params[1].get_int(), nBits = GetNextTargetRequired(pindexBest, true), nDays = 365;
  91
  92     if (params.size() > 2)
  93     {
  94         CBigNum bnTarget(nPoWBase);
  95         bnTarget *= 1000;
  96         bnTarget /= (int) (params[2].get_real() * 1000);
  97         nBits = bnTarget.GetCompact();
  98     }
  99
 100     if (params.size() > 3)
 101     {
 102         nDays = params[3].get_int();
 103     }
 104
 105     CTransaction tx;
 106     uint256 hashBlock = 0;
 107     if (GetTransaction(hash, tx, hashBlock))
 108     {
 109         if (nOut > tx.vout.size())
 110             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Incorrect output number");
 111
 112         if (hashBlock == 0)
 113             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Unable to find transaction in the blockchain");
 114
 115         CTxDB txdb("r");
 116
 117         CBlock block;
 118         CTxIndex txindex;
 119
 120         // Load transaction index item
 121         if (!txdb.ReadTxIndex(tx.GetHash(), txindex))
 122             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Unable to read block index item");
 123
 124         // Read block header
 125         if (!block.ReadFromDisk(txindex.pos.nFile, txindex.pos.nBlockPos, false))
 126             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "CBlock::ReadFromDisk() failed");
 127
 128         uint64_t nStakeModifier = 0;
 129         if (!GetKernelStakeModifier(block.GetHash(), nStakeModifier))
 130             throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No kernel stake modifier generated yet");
 131
 132         std::pair<uint32_t, uint32_t> interval;
 133         interval.first = GetTime();
 134         // Only count coins meeting min age requirement
 135         if (nStakeMinAge + block.nTime > interval.first)
 136             interval.first += (nStakeMinAge + block.nTime - interval.first);
 137         interval.second = interval.first + nDays * 86400;
 138
 139         SHA256_CTX ctx;
 140         GetKernelMidstate(nStakeModifier, block.nTime, txindex.pos.nTxPos - txindex.pos.nBlockPos, tx.nTime, nOut, ctx);
 141
 142         std::pair<uint256, uint32_t> solution;
 143         if (ScanMidstateForward(ctx, nBits, tx.nTime, tx.vout[nOut].nValue, interval, solution))
 144         {
 145             Object r;
 146             r.push_back(Pair("hash", solution.first.GetHex()));
 147             r.push_back(Pair("time", DateTimeStrFormat(solution.second)));
 148
 149             return r;
 150         }
 151     }
 152     else
 153         throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "No information available about transaction");
 154
 155     return Value::null;
 156 }
 157
 158 Value getworkex(const Array& params, bool fHelp)
 159 {
 160     if (fHelp || params.size() > 2)
 161         throw runtime_error(
 162             "getworkex [data, coinbase]\n"
 163             "If [data, coinbase] is not specified, returns extended work data.\n"
 164         );
 165
 166     if (vNodes.empty())
 167         throw JSONRPCError(-9, "NovaCoin is not connected!");
 168
 169     if (IsInitialBlockDownload())
 170         throw JSONRPCError(-10, "NovaCoin is downloading blocks...");
 171
 172     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 173     static mapNewBlock_t mapNewBlock;
 174     static vector<CBlock*> vNewBlock;
 175     static CReserveKey reservekey(pwalletMain);
 176
 177     if (params.size() == 0)
 178     {
 179         // Update block
 180         static unsigned int nTransactionsUpdatedLast;
 181         static CBlockIndex* pindexPrev;
 182         static int64_t nStart;
 183         static CBlock* pblock;
 184         if (pindexPrev != pindexBest ||
 185             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 186         {
 187             if (pindexPrev != pindexBest)
 188             {
 189                 // Deallocate old blocks since they're obsolete now
 190                 mapNewBlock.clear();
 191                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 192                     delete pblock;
 193                 vNewBlock.clear();
 194             }
 195             nTransactionsUpdatedLast = nTransactionsUpdated;
 196             pindexPrev = pindexBest;
 197             nStart = GetTime();
 198
 199             // Create new block
 200             pblock = CreateNewBlock(pwalletMain);
 201             if (!pblock)
 202                 throw JSONRPCError(-7, "Out of memory");
 203             vNewBlock.push_back(pblock);
 204         }
 205
 206         // Update nTime
 207         pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 208         pblock->nNonce = 0;
 209
 210         // Update nExtraNonce
 211         static unsigned int nExtraNonce = 0;
 212         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 213
 214         // Save
 215         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 216
 217         // Prebuild hash buffers
 218         char pmidstate[32];
 219         char pdata[128];
 220         char phash1[64];
 221         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 222
 223         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 224
 225         CTransaction coinbaseTx = pblock->vtx[0];
 226         std::vector<uint256> merkle = pblock->GetMerkleBranch(0);
 227
 228         Object result;
 229         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 230         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 231
 232         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 233         ssTx << coinbaseTx;
 234         result.push_back(Pair("coinbase", HexStr(ssTx.begin(), ssTx.end())));
 235
 236         Array merkle_arr;
 237
 238         BOOST_FOREACH(uint256 merkleh, merkle) {
 239             merkle_arr.push_back(HexStr(BEGIN(merkleh), END(merkleh)));
 240         }
 241
 242         result.push_back(Pair("merkle", merkle_arr));
 243
 244
 245         return result;
 246     }
 247     else
 248     {
 249         // Parse parameters
 250         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 251         vector<unsigned char> coinbase;
 252
 253         if(params.size() == 2)
 254             coinbase = ParseHex(params[1].get_str());
 255
 256         if (vchData.size() != 128)
 257             throw JSONRPCError(-8, "Invalid parameter");
 258
 259         CBlock* pdata = (CBlock*)&vchData[0];
 260
 261         // Byte reverse
 262         for (int i = 0; i < 128/4; i++)
 263             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 264
 265         // Get saved block
 266         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 267             return false;
 268         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 269
 270         pblock->nTime = pdata->nTime;
 271         pblock->nNonce = pdata->nNonce;
 272
 273         if(coinbase.size() == 0)
 274             pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 275         else
 276             CDataStream(coinbase, SER_NETWORK, PROTOCOL_VERSION) >> pblock->vtx[0]; // FIXME - HACK!
 277
 278         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 279
 280         return CheckWork(pblock, *pwalletMain, reservekey);
 281     }
 282 }
 283
 284
 285 Value getwork(const Array& params, bool fHelp)
 286 {
 287     if (fHelp || params.size() > 1)
 288         throw runtime_error(
 289             "getwork [data]\n"
 290             "If [data] is not specified, returns formatted hash data to work on:\n"
 291             "  \"midstate\" : precomputed hash state after hashing the first half of the data (DEPRECATED)\n" // deprecated
 292             "  \"data\" : block data\n"
 293             "  \"hash1\" : formatted hash buffer for second hash (DEPRECATED)\n" // deprecated
 294             "  \"target\" : little endian hash target\n"
 295             "If [data] is specified, tries to solve the block and returns true if it was successful.");
 296
 297     if (vNodes.empty())
 298         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 299
 300     if (IsInitialBlockDownload())
 301         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 302
 303     typedef map<uint256, pair<CBlock*, CScript> > mapNewBlock_t;
 304     static mapNewBlock_t mapNewBlock;    // FIXME: thread safety
 305     static vector<CBlock*> vNewBlock;
 306     static CReserveKey reservekey(pwalletMain);
 307
 308     if (params.size() == 0)
 309     {
 310         // Update block
 311         static unsigned int nTransactionsUpdatedLast;
 312         static CBlockIndex* pindexPrev;
 313         static int64_t nStart;
 314         static CBlock* pblock;
 315         if (pindexPrev != pindexBest ||
 316             (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 60))
 317         {
 318             if (pindexPrev != pindexBest)
 319             {
 320                 // Deallocate old blocks since they're obsolete now
 321                 mapNewBlock.clear();
 322                 BOOST_FOREACH(CBlock* pblock, vNewBlock)
 323                     delete pblock;
 324                 vNewBlock.clear();
 325             }
 326
 327             // Clear pindexPrev so future getworks make a new block, despite any failures from here on
 328             pindexPrev = NULL;
 329
 330             // Store the pindexBest used before CreateNewBlock, to avoid races
 331             nTransactionsUpdatedLast = nTransactionsUpdated;
 332             CBlockIndex* pindexPrevNew = pindexBest;
 333             nStart = GetTime();
 334
 335             // Create new block
 336             pblock = CreateNewBlock(pwalletMain);
 337             if (!pblock)
 338                 throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 339             vNewBlock.push_back(pblock);
 340
 341             // Need to update only after we know CreateNewBlock succeeded
 342             pindexPrev = pindexPrevNew;
 343         }
 344
 345         // Update nTime
 346         pblock->UpdateTime(pindexPrev);
 347         pblock->nNonce = 0;
 348
 349         // Update nExtraNonce
 350         static unsigned int nExtraNonce = 0;
 351         IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
 352
 353         // Save
 354         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 355
 356         // Pre-build hash buffers
 357         char pmidstate[32];
 358         char pdata[128];
 359         char phash1[64];
 360         FormatHashBuffers(pblock, pmidstate, pdata, phash1);
 361
 362         uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 363
 364         Object result;
 365         result.push_back(Pair("midstate", HexStr(BEGIN(pmidstate), END(pmidstate)))); // deprecated
 366         result.push_back(Pair("data",     HexStr(BEGIN(pdata), END(pdata))));
 367         result.push_back(Pair("hash1",    HexStr(BEGIN(phash1), END(phash1)))); // deprecated
 368         result.push_back(Pair("target",   HexStr(BEGIN(hashTarget), END(hashTarget))));
 369         return result;
 370     }
 371     else
 372     {
 373         // Parse parameters
 374         vector<unsigned char> vchData = ParseHex(params[0].get_str());
 375         if (vchData.size() != 128)
 376             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter");
 377         CBlock* pdata = (CBlock*)&vchData[0];
 378
 379         // Byte reverse
 380         for (int i = 0; i < 128/4; i++)
 381             ((unsigned int*)pdata)[i] = ByteReverse(((unsigned int*)pdata)[i]);
 382
 383         // Get saved block
 384         if (!mapNewBlock.count(pdata->hashMerkleRoot))
 385             return false;
 386         CBlock* pblock = mapNewBlock[pdata->hashMerkleRoot].first;
 387
 388         pblock->nTime = pdata->nTime;
 389         pblock->nNonce = pdata->nNonce;
 390         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
 391         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 392
 393         return CheckWork(pblock, *pwalletMain, reservekey);
 394     }
 395 }
 396
 397
 398 Value getblocktemplate(const Array& params, bool fHelp)
 399 {
 400     if (fHelp || params.size() > 1)
 401         throw runtime_error(
 402             "getblocktemplate [params]\n"
 403             "Returns data needed to construct a block to work on:\n"
 404             "  \"version\" : block version\n"
 405             "  \"previousblockhash\" : hash of current highest block\n"
 406             "  \"transactions\" : contents of non-coinbase transactions that should be included in the next block\n"
 407             "  \"coinbaseaux\" : data that should be included in coinbase\n"
 408             "  \"coinbasevalue\" : maximum allowable input to coinbase transaction, including the generation award and transaction fees\n"
 409             "  \"target\" : hash target\n"
 410             "  \"mintime\" : minimum timestamp appropriate for next block\n"
 411             "  \"curtime\" : current timestamp\n"
 412             "  \"mutable\" : list of ways the block template may be changed\n"
 413             "  \"noncerange\" : range of valid nonces\n"
 414             "  \"sigoplimit\" : limit of sigops in blocks\n"
 415             "  \"sizelimit\" : limit of block size\n"
 416             "  \"bits\" : compressed target of next block\n"
 417             "  \"height\" : height of the next block\n"
 418             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 419
 420     std::string strMode = "template";
 421     if (params.size() > 0)
 422     {
 423         const Object& oparam = params[0].get_obj();
 424         const Value& modeval = find_value(oparam, "mode");
 425         if (modeval.type() == str_type)
 426             strMode = modeval.get_str();
 427         else if (modeval.type() == null_type)
 428         {
 429             /* Do nothing */
 430         }
 431         else
 432             throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 433     }
 434
 435     if (strMode != "template")
 436         throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode");
 437
 438     if (vNodes.empty())
 439         throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "NovaCoin is not connected!");
 440
 441     if (IsInitialBlockDownload())
 442         throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "NovaCoin is downloading blocks...");
 443
 444     static CReserveKey reservekey(pwalletMain);
 445
 446     // Update block
 447     static unsigned int nTransactionsUpdatedLast;
 448     static CBlockIndex* pindexPrev;
 449     static int64_t nStart;
 450     static CBlock* pblock;
 451     if (pindexPrev != pindexBest ||
 452         (nTransactionsUpdated != nTransactionsUpdatedLast && GetTime() - nStart > 5))
 453     {
 454         // Clear pindexPrev so future calls make a new block, despite any failures from here on
 455         pindexPrev = NULL;
 456
 457         // Store the pindexBest used before CreateNewBlock, to avoid races
 458         nTransactionsUpdatedLast = nTransactionsUpdated;
 459         CBlockIndex* pindexPrevNew = pindexBest;
 460         nStart = GetTime();
 461
 462         // Create new block
 463         if(pblock)
 464         {
 465             delete pblock;
 466             pblock = NULL;
 467         }
 468         pblock = CreateNewBlock(pwalletMain);
 469         if (!pblock)
 470             throw JSONRPCError(RPC_OUT_OF_MEMORY, "Out of memory");
 471
 472         // Need to update only after we know CreateNewBlock succeeded
 473         pindexPrev = pindexPrevNew;
 474     }
 475
 476     // Update nTime
 477     pblock->UpdateTime(pindexPrev);
 478     pblock->nNonce = 0;
 479
 480     Array transactions;
 481     map<uint256, int64_t> setTxIndex;
 482     int i = 0;
 483     CTxDB txdb("r");
 484     BOOST_FOREACH (CTransaction& tx, pblock->vtx)
 485     {
 486         uint256 txHash = tx.GetHash();
 487         setTxIndex[txHash] = i++;
 488
 489         if (tx.IsCoinBase() || tx.IsCoinStake())
 490             continue;
 491
 492         Object entry;
 493
 494         CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
 495         ssTx << tx;
 496         entry.push_back(Pair("data", HexStr(ssTx.begin(), ssTx.end())));
 497
 498         entry.push_back(Pair("hash", txHash.GetHex()));
 499
 500         MapPrevTx mapInputs;
 501         map<uint256, CTxIndex> mapUnused;
 502         bool fInvalid = false;
 503         if (tx.FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid))
 504         {
 505             entry.push_back(Pair("fee", (int64_t)(tx.GetValueIn(mapInputs) - tx.GetValueOut())));
 506
 507             Array deps;
 508             BOOST_FOREACH (MapPrevTx::value_type& inp, mapInputs)
 509             {
 510                 if (setTxIndex.count(inp.first))
 511                     deps.push_back(setTxIndex[inp.first]);
 512             }
 513             entry.push_back(Pair("depends", deps));
 514
 515             int64_t nSigOps = tx.GetLegacySigOpCount();
 516             nSigOps += tx.GetP2SHSigOpCount(mapInputs);
 517             entry.push_back(Pair("sigops", nSigOps));
 518         }
 519
 520         transactions.push_back(entry);
 521     }
 522
 523     Object aux;
 524     aux.push_back(Pair("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end())));
 525
 526     uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
 527
 528     static Array aMutable;
 529     if (aMutable.empty())
 530     {
 531         aMutable.push_back("time");
 532         aMutable.push_back("transactions");
 533         aMutable.push_back("prevblock");
 534     }
 535
 536     Object result;
 537     result.push_back(Pair("version", pblock->nVersion));
 538     result.push_back(Pair("previousblockhash", pblock->hashPrevBlock.GetHex()));
 539     result.push_back(Pair("transactions", transactions));
 540     result.push_back(Pair("coinbaseaux", aux));
 541     result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue));
 542     result.push_back(Pair("target", hashTarget.GetHex()));
 543     result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1));
 544     result.push_back(Pair("mutable", aMutable));
 545     result.push_back(Pair("noncerange", "00000000ffffffff"));
 546     result.push_back(Pair("sigoplimit", (int64_t)MAX_BLOCK_SIGOPS));
 547     result.push_back(Pair("sizelimit", (int64_t)MAX_BLOCK_SIZE));
 548     result.push_back(Pair("curtime", (int64_t)pblock->nTime));
 549     result.push_back(Pair("bits", HexBits(pblock->nBits)));
 550     result.push_back(Pair("height", (int64_t)(pindexPrev->nHeight+1)));
 551
 552     return result;
 553 }
 554
 555 Value submitblock(const Array& params, bool fHelp)
 556 {
 557     if (fHelp || params.size() < 1 || params.size() > 2)
 558         throw runtime_error(
 559             "submitblock <hex data> [optional-params-obj]\n"
 560             "[optional-params-obj] parameter is currently ignored.\n"
 561             "Attempts to submit new block to network.\n"
 562             "See https://en.bitcoin.it/wiki/BIP_0022 for full specification.");
 563
 564     vector<unsigned char> blockData(ParseHex(params[0].get_str()));
 565     CDataStream ssBlock(blockData, SER_NETWORK, PROTOCOL_VERSION);
 566     CBlock block;
 567     try {
 568         ssBlock >> block;
 569     }
 570     catch (std::exception &e) {
 571         throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block decode failed");
 572     }
 573
 574     bool fAccepted = ProcessBlock(NULL, &block);
 575     if (!fAccepted)
 576         return "rejected";
 577
 578     return Value::null;
 579 }
 580