foster/bitcoin-bitcoin-core
0
0
Fork 0
mirror of https://github.com/bitcoin/bitcoin.git synced 2025-02-10 10:52:31 -05:00
Code Issues Activity
bitcoin-bitcoin-core/src/rpcclient.cpp
Gavin Andresen 171ca7745e estimatefee / estimatepriority RPC methods 
New RPC methods: return an estimate of the fee (or priority) a
transaction needs to be likely to confirm in a given number of
blocks.

Mike Hearn created the first version of this method for estimating fees.
It works as follows:

For transactions that took 1 to N (I picked N=25) blocks to confirm,
keep N buckets with at most 100 entries in each recording the
fees-per-kilobyte paid by those transactions.

(separate buckets are kept for transactions that confirmed because
they are high-priority)

The buckets are filled as blocks are found, and are saved/restored
in a new fee_estiamtes.dat file in the data directory.

A few variations on Mike's initial scheme:

To estimate the fee needed for a transaction to confirm in X buckets,
all of the samples in all of the buckets are used and a median of
all of the data is used to make the estimate. For example, imagine
25 buckets each containing the full 100 entries. Those 2,500 samples
are sorted, and the estimate of the fee needed to confirm in the very
next block is the 50'th-highest-fee-entry in that sorted list; the
estimate of the fee needed to confirm in the next two blocks is the
150'th-highest-fee-entry, etc.

That algorithm has the nice property that estimates of how much fee
you need to pay to get confirmed in block N will always be greater
than or equal to the estimate for block N+1. It would clearly be wrong
to say "pay 11 uBTC and you'll get confirmed in 3 blocks, but pay
12 uBTC and it will take LONGER".

A single block will not contribute more than 10 entries to any one
bucket, so a single miner and a large block cannot overwhelm
the estimates.
2014-06-06 10:44:57 -04:00

282 lines
12 KiB
C++
Raw Blame History

// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2013 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "rpcclient.h"
#include "rpcprotocol.h"
#include "util.h"
#include "ui_interface.h"
#include "chainparams.h" // for Params().RPCPort()
#include <stdint.h>
#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 "json/json_spirit_writer_template.h"
using namespace std;
using namespace boost;
using namespace boost::asio;
using namespace json_spirit;
Object CallRPC(const string& strMethod, const Array& params)
{
if (mapArgs["-rpcuser"] == "" && mapArgs["-rpcpassword"] == "")
throw runtime_error(strprintf(
_("You must set rpcpassword=<password> in the configuration file:\n%s\n"
"If the file does not exist, create it with owner-readable-only file permissions."),
GetConfigFile().string().c_str()));
// Connect to localhost
bool fUseSSL = GetBoolArg("-rpcssl", false);
asio::io_service io_service;
ssl::context context(io_service, ssl::context::sslv23);
context.set_options(ssl::context::no_sslv2);
asio::ssl::stream<asio::ip::tcp::socket> sslStream(io_service, context);
SSLIOStreamDevice<asio::ip::tcp> d(sslStream, fUseSSL);
iostreams::stream< SSLIOStreamDevice<asio::ip::tcp> > stream(d);
bool fWait = GetBoolArg("-rpcwait", false); // -rpcwait means try until server has started
do {
bool fConnected = d.connect(GetArg("-rpcconnect", "127.0.0.1"), GetArg("-rpcport", itostr(Params().RPCPort())));
if (fConnected) break;
if (fWait)
MilliSleep(1000);
else
throw runtime_error("couldn't connect to server");
} while (fWait);
// HTTP basic authentication
string strUserPass64 = EncodeBase64(mapArgs["-rpcuser"] + ":" + mapArgs["-rpcpassword"]);
map<string, string> mapRequestHeaders;
mapRequestHeaders["Authorization"] = string("Basic ") + strUserPass64;
// Send request
string strRequest = JSONRPCRequest(strMethod, params, 1);
string strPost = HTTPPost(strRequest, mapRequestHeaders);
stream << strPost << std::flush;
// Receive HTTP reply status
int nProto = 0;
int nStatus = ReadHTTPStatus(stream, nProto);
// Receive HTTP reply message headers and body
map<string, string> mapHeaders;
string strReply;
ReadHTTPMessage(stream, mapHeaders, strReply, nProto);
if (nStatus == HTTP_UNAUTHORIZED)
throw runtime_error("incorrect rpcuser or rpcpassword (authorization failed)");
else if (nStatus >= 400 && nStatus != HTTP_BAD_REQUEST && nStatus != HTTP_NOT_FOUND && nStatus != HTTP_INTERNAL_SERVER_ERROR)
throw runtime_error(strprintf("server returned HTTP error %d", nStatus));
else if (strReply.empty())
throw runtime_error("no response from server");
// Parse reply
Value valReply;
if (!read_string(strReply, valReply))
throw runtime_error("couldn't parse reply from server");
const Object& reply = valReply.get_obj();
if (reply.empty())
throw runtime_error("expected reply to have result, error and id properties");
return reply;
}
template<typename T>
void ConvertTo(Value& value, bool fAllowNull=false)
{
if (fAllowNull && value.type() == null_type)
return;
if (value.type() == str_type)
{
// reinterpret string as unquoted json value
Value value2;
string strJSON = value.get_str();
if (!read_string(strJSON, value2))
throw runtime_error(string("Error parsing JSON:")+strJSON);
ConvertTo<T>(value2, fAllowNull);
value = value2;
}
else
{
value = value.get_value<T>();
}
}
// Convert strings to command-specific RPC representation
Array RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams)
{
Array params;
BOOST_FOREACH(const std::string &param, strParams)
params.push_back(param);
int n = params.size();
//
// Special case non-string parameter types
//
if (strMethod == "stop" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "getaddednodeinfo" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "setgenerate" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "setgenerate" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "getnetworkhashps" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "getnetworkhashps" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "sendtoaddress" && n > 1) ConvertTo<double>(params[1]);
if (strMethod == "settxfee" && n > 0) ConvertTo<double>(params[0]);
if (strMethod == "getreceivedbyaddress" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "getreceivedbyaccount" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "listreceivedbyaddress" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "listreceivedbyaddress" && n > 1) ConvertTo<bool>(params[1]);
if (strMethod == "listreceivedbyaccount" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "listreceivedbyaccount" && n > 1) ConvertTo<bool>(params[1]);
if (strMethod == "getbalance" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "getblockhash" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "move" && n > 2) ConvertTo<double>(params[2]);
if (strMethod == "move" && n > 3) ConvertTo<int64_t>(params[3]);
if (strMethod == "sendfrom" && n > 2) ConvertTo<double>(params[2]);
if (strMethod == "sendfrom" && n > 3) ConvertTo<int64_t>(params[3]);
if (strMethod == "listtransactions" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "listtransactions" && n > 2) ConvertTo<int64_t>(params[2]);
if (strMethod == "listaccounts" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "walletpassphrase" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "getblocktemplate" && n > 0) ConvertTo<Object>(params[0]);
if (strMethod == "listsinceblock" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "sendmany" && n > 1) ConvertTo<Object>(params[1]);
if (strMethod == "sendmany" && n > 2) ConvertTo<int64_t>(params[2]);
if (strMethod == "addmultisigaddress" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "addmultisigaddress" && n > 1) ConvertTo<Array>(params[1]);
if (strMethod == "createmultisig" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "createmultisig" && n > 1) ConvertTo<Array>(params[1]);
if (strMethod == "listunspent" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "listunspent" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "listunspent" && n > 2) ConvertTo<Array>(params[2]);
if (strMethod == "getblock" && n > 1) ConvertTo<bool>(params[1]);
if (strMethod == "getrawtransaction" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "createrawtransaction" && n > 0) ConvertTo<Array>(params[0]);
if (strMethod == "createrawtransaction" && n > 1) ConvertTo<Object>(params[1]);
if (strMethod == "signrawtransaction" && n > 1) ConvertTo<Array>(params[1], true);
if (strMethod == "signrawtransaction" && n > 2) ConvertTo<Array>(params[2], true);
if (strMethod == "sendrawtransaction" && n > 1) ConvertTo<bool>(params[1], true);
if (strMethod == "gettxout" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "gettxout" && n > 2) ConvertTo<bool>(params[2]);
if (strMethod == "lockunspent" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "lockunspent" && n > 1) ConvertTo<Array>(params[1]);
if (strMethod == "importprivkey" && n > 2) ConvertTo<bool>(params[2]);
if (strMethod == "verifychain" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "verifychain" && n > 1) ConvertTo<int64_t>(params[1]);
if (strMethod == "keypoolrefill" && n > 0) ConvertTo<int64_t>(params[0]);
if (strMethod == "getrawmempool" && n > 0) ConvertTo<bool>(params[0]);
if (strMethod == "estimatefee" && n > 0) ConvertTo<boost::int64_t>(params[0]);
if (strMethod == "estimatepriority" && n > 0) ConvertTo<boost::int64_t>(params[0]);
return params;
}
int CommandLineRPC(int argc, char *argv[])
{
string strPrint;
int nRet = 0;
try
{
// Skip switches
while (argc > 1 && IsSwitchChar(argv[1][0]))
{
argc--;
argv++;
}
// Method
if (argc < 2)
throw runtime_error("too few parameters");
string strMethod = argv[1];
// Parameters default to strings
std::vector<std::string> strParams(&argv[2], &argv[argc]);
Array params = RPCConvertValues(strMethod, strParams);
// Execute
Object reply = CallRPC(strMethod, params);
// Parse reply
const Value& result = find_value(reply, "result");
const Value& error = find_value(reply, "error");
if (error.type() != null_type)
{
// Error
strPrint = "error: " + write_string(error, false);
int code = find_value(error.get_obj(), "code").get_int();
nRet = abs(code);
}
else
{
// Result
if (result.type() == null_type)
strPrint = "";
else if (result.type() == str_type)
strPrint = result.get_str();
else
strPrint = write_string(result, true);
}
}
catch (boost::thread_interrupted) {
throw;
}
catch (std::exception& e) {
strPrint = string("error: ") + e.what();
nRet = abs(RPC_MISC_ERROR);
}
catch (...) {
PrintExceptionContinue(NULL, "CommandLineRPC()");
throw;
}
if (strPrint != "")
{
fprintf((nRet == 0 ? stdout : stderr), "%s\n", strPrint.c_str());
}
return nRet;
}
std::string HelpMessageCli(bool mainProgram)
{
string strUsage;
if(mainProgram)
{
strUsage += _("Options:") + "\n";
strUsage += " -? " + _("This help message") + "\n";
strUsage += " -conf=<file> " + _("Specify configuration file (default: bitcoin.conf)") + "\n";
strUsage += " -datadir=<dir> " + _("Specify data directory") + "\n";
strUsage += " -testnet " + _("Use the test network") + "\n";
strUsage += " -regtest " + _("Enter regression test mode, which uses a special chain in which blocks can be "
"solved instantly. This is intended for regression testing tools and app development.") + "\n";
} else {
strUsage += _("RPC client options:") + "\n";
}
strUsage += " -rpcconnect=<ip> " + _("Send commands to node running on <ip> (default: 127.0.0.1)") + "\n";
strUsage += " -rpcport=<port> " + _("Connect to JSON-RPC on <port> (default: 8332 or testnet: 18332)") + "\n";
strUsage += " -rpcwait " + _("Wait for RPC server to start") + "\n";
if(mainProgram)
{
strUsage += " -rpcuser=<user> " + _("Username for JSON-RPC connections") + "\n";
strUsage += " -rpcpassword=<pw> " + _("Password for JSON-RPC connections") + "\n";
strUsage += "\n" + _("SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n";
strUsage += " -rpcssl " + _("Use OpenSSL (https) for JSON-RPC connections") + "\n";
}
return strUsage;
}
View git blame Copy permalink