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Solve proof of works if requested.

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This commit is contained in:
JoelKatz
2012-12-05 23:48:23 -08:00
parent 7f313afe80
commit e0a9520d9d
3 changed files with 55 additions and 2 deletions
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49
src/cpp/ripple/Peer.cpp
View File

@@ -1146,7 +1146,27 @@ void Peer::recvProofWork(ripple::TMProofWork& packet)
if (packet.has_target() && packet.has_challenge() && packet.has_iterations())
{ // this is a challenge
// WRITEME
// WRITEME: Reject from inbound connections
uint256 challenge, target;
if ((packet.challenge().size() != (256 / 8)) || (packet.target().size() != (256 / 8)))
{
punishPeer(PP_INVALID_REQUEST);
return;
}
memcpy(challenge.begin(), packet.challenge().data(), 256 / 8);
memcpy(target.begin(), packet.target().data(), 256 / 8);
ProofOfWork::pointer pow = boost::make_shared<ProofOfWork>(packet.token(), packet.iterations(),
challenge, target);
if (!pow->isValid())
{
punishPeer(PP_INVALID_REQUEST);
return;
}
theApp->getJobQueue().addJob(jtPROOFWORK,
boost::bind(&Peer::doProofOfWork, _1, boost::weak_ptr<Peer>(shared_from_this()), pow));
return;
}
@@ -1587,6 +1607,33 @@ void Peer::punishPeer(PeerPunish)
{
}
void Peer::doProofOfWork(Job&, boost::weak_ptr<Peer> peer, ProofOfWork::pointer pow)
{
if (peer.expired())
return;
uint256 solution = pow->solve();
if (solution.isZero())
{
cLog(lsWARNING) << "Failed to solve proof of work";
}
else
{
Peer::pointer pptr(peer.lock());
if (pptr)
{
ripple::TMProofWork reply;
reply.set_token(pow->getToken());
reply.set_response(solution.begin(), solution.size());
pptr->sendPacket(boost::make_shared<PackedMessage>(reply, ripple::mtPROOFOFWORK));
}
else
{
// WRITEME: Save solved proof of work for new connection
}
}
}
Json::Value Peer::getJson()
{
Json::Value ret(Json::objectValue);

4
src/cpp/ripple/Peer.h
View File

@@ -13,6 +13,8 @@
#include "Ledger.h"
#include "Transaction.h"
#include "InstanceCounter.h"
#include "JobQueue.h"
#include "ProofOfWork.h"
enum PeerPunish
{
@@ -116,6 +118,8 @@ protected:
void addLedger(const uint256& ledger);
void addTxSet(const uint256& TxSet);
static void doProofOfWork(Job&, boost::weak_ptr<Peer>, ProofOfWork::pointer);
public:
//bool operator == (const Peer& other);

4
src/cpp/ripple/ProofOfWork.h
View File

@@ -33,13 +33,15 @@ protected:
static const int sMaxIterations;
public:
typedef boost::shared_ptr<ProofOfWork> pointer;
ProofOfWork(const std::string& token, int iterations, const uint256& challenge, const uint256& target) :
mToken(token), mChallenge(challenge), mTarget(target), mIterations(iterations)
{ ; }
bool isValid() const;
uint256 solve(int maxIterations) const;
uint256 solve(int maxIterations = 2 * sMaxIterations) const;
bool checkSolution(const uint256& solution) const;
const std::string& getToken() const { return mToken; }