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Remove half-implemented publish/subscribe system

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This commit is contained in:
Gavin Andresen
2012-04-04 15:56:00 -04:00
parent b0a7e05a45
commit f487746ded
2 changed files with 0 additions and 167 deletions
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106
src/net.cpp
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@@ -289,105 +289,6 @@ void AddressCurrentlyConnected(const CService& addr)
void AbandonRequests(void (*fn)(void*, CDataStream&), void* param1)
{
// If the dialog might get closed before the reply comes back,
// call this in the destructor so it doesn't get called after it's deleted.
CRITICAL_BLOCK(cs_vNodes)
{
BOOST_FOREACH(CNode* pnode, vNodes)
{
CRITICAL_BLOCK(pnode->cs_mapRequests)
{
for (map<uint256, CRequestTracker>::iterator mi = pnode->mapRequests.begin(); mi != pnode->mapRequests.end();)
{
CRequestTracker& tracker = (*mi).second;
if (tracker.fn == fn && tracker.param1 == param1)
pnode->mapRequests.erase(mi++);
else
mi++;
}
}
}
}
}
//
// Subscription methods for the broadcast and subscription system.
// Channel numbers are message numbers, i.e. MSG_TABLE and MSG_PRODUCT.
//
// The subscription system uses a meet-in-the-middle strategy.
// With 100,000 nodes, if senders broadcast to 1000 random nodes and receivers
// subscribe to 1000 random nodes, 99.995% (1 - 0.99^1000) of messages will get through.
//
bool AnySubscribed(unsigned int nChannel)
{
if (pnodeLocalHost->IsSubscribed(nChannel))
return true;
CRITICAL_BLOCK(cs_vNodes)
BOOST_FOREACH(CNode* pnode, vNodes)
if (pnode->IsSubscribed(nChannel))
return true;
return false;
}
bool CNode::IsSubscribed(unsigned int nChannel)
{
if (nChannel >= vfSubscribe.size())
return false;
return vfSubscribe[nChannel];
}
void CNode::Subscribe(unsigned int nChannel, unsigned int nHops)
{
if (nChannel >= vfSubscribe.size())
return;
if (!AnySubscribed(nChannel))
{
// Relay subscribe
CRITICAL_BLOCK(cs_vNodes)
BOOST_FOREACH(CNode* pnode, vNodes)
if (pnode != this)
pnode->PushMessage("subscribe", nChannel, nHops);
}
vfSubscribe[nChannel] = true;
}
void CNode::CancelSubscribe(unsigned int nChannel)
{
if (nChannel >= vfSubscribe.size())
return;
// Prevent from relaying cancel if wasn't subscribed
if (!vfSubscribe[nChannel])
return;
vfSubscribe[nChannel] = false;
if (!AnySubscribed(nChannel))
{
// Relay subscription cancel
CRITICAL_BLOCK(cs_vNodes)
BOOST_FOREACH(CNode* pnode, vNodes)
if (pnode != this)
pnode->PushMessage("sub-cancel", nChannel);
}
}
CNode* FindNode(const CNetAddr& ip)
@@ -486,13 +387,6 @@ void CNode::CloseSocketDisconnect()
void CNode::Cleanup()
{
// All of a nodes broadcasts and subscriptions are automatically torn down
// when it goes down, so a node has to stay up to keep its broadcast going.
// Cancel subscriptions
for (unsigned int nChannel = 0; nChannel < vfSubscribe.size(); nChannel++)
if (vfSubscribe[nChannel])
CancelSubscribe(nChannel);
}