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net: make a few values immutable, and use deterministic randomness for the localnonce #9050

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Nov 3, 2016
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net: make a few values immutable, and use deterministic randomness for the localnonce #9050

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aff6584
net: constify a few CNode vars to indicate that they're threadsafe
theuni Oct 31, 2016
59ac5c5
net: Use deterministic randomness for CNode's nonce, and make it const
theuni Oct 26, 2016
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net: constify a few CNode vars to indicate that they're threadsafe
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@theuni
theuni committed Oct 31, 2016
commit aff6584e09938768838a768b67722db553cf8ef4
11 changes: 5 additions & 6 deletions src/net.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2512,9 +2512,13 @@ unsigned int CConnman::GetSendBufferSize() const{ return nSendBufferMaxSize; }
CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn, SOCKET hSocketIn, const CAddress& addrIn, uint64_t nKeyedNetGroupIn, const std::string& addrNameIn, bool fInboundIn) :
ssSend(SER_NETWORK, INIT_PROTO_VERSION),
addr(addrIn),
fInbound(fInboundIn),
id(idIn),
nKeyedNetGroup(nKeyedNetGroupIn),
addrKnown(5000, 0.001),
filterInventoryKnown(50000, 0.000001)
filterInventoryKnown(50000, 0.000001),
nLocalServices(nLocalServicesIn),
nMyStartingHeight(nMyStartingHeightIn)
{
nServices = NODE_NONE;
nServicesExpected = NODE_NONE;
Expand All @@ -2533,7 +2537,6 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn
fOneShot = false;
fClient = false; // set by version message
fFeeler = false;
fInbound = fInboundIn;
fNetworkNode = false;
fSuccessfullyConnected = false;
fDisconnect = false;
Expand Down Expand Up @@ -2562,12 +2565,8 @@ CNode::CNode(NodeId idIn, ServiceFlags nLocalServicesIn, int nMyStartingHeightIn
minFeeFilter = 0;
lastSentFeeFilter = 0;
nextSendTimeFeeFilter = 0;
id = idIn;
nOptimisticBytesWritten = 0;
nLocalServices = nLocalServicesIn;

GetRandBytes((unsigned char*)&nLocalHostNonce, sizeof(nLocalHostNonce));
nMyStartingHeight = nMyStartingHeightIn;

BOOST_FOREACH(const std::string &msg, getAllNetMessageTypes())
mapRecvBytesPerMsgCmd[msg] = 0;
Expand Down
8 changes: 4 additions & 4 deletions src/net.h
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Expand Up @@ -589,7 +589,7 @@ class CNode
bool fFeeler; // If true this node is being used as a short lived feeler.
bool fOneShot;
bool fClient;
bool fInbound;
const bool fInbound;
bool fNetworkNode;
bool fSuccessfullyConnected;
bool fDisconnect;
Expand All @@ -603,7 +603,7 @@ class CNode
CCriticalSection cs_filter;
CBloomFilter* pfilter;
int nRefCount;
NodeId id;
const NodeId id;

const uint64_t nKeyedNetGroup;
protected:
Expand Down Expand Up @@ -679,8 +679,8 @@ class CNode

uint64_t nLocalHostNonce;
// Services offered to this peer
ServiceFlags nLocalServices;
int nMyStartingHeight;
const ServiceFlags nLocalServices;
const int nMyStartingHeight;
public:

NodeId GetId() const {
Expand Down