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-rw-r--r--src/main.cpp290
1 files changed, 152 insertions, 138 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 22baf0f3eb..b29091b4fe 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3029,6 +3029,115 @@ bool static AlreadyHave(const CInv& inv)
unsigned char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
+void static ProcessGetData(CNode* pfrom)
+{
+ std::deque<CInv>::iterator it = pfrom->vRecvGetData.begin();
+
+ vector<CInv> vNotFound;
+
+ while (it != pfrom->vRecvGetData.end()) {
+ // Don't bother if send buffer is too full to respond anyway
+ if (pfrom->nSendSize >= SendBufferSize())
+ break;
+
+ const CInv &inv = *it;
+ {
+ if (fShutdown)
+ break;
+ it++;
+
+ if (inv.type == MSG_BLOCK || inv.type == MSG_FILTERED_BLOCK)
+ {
+ // Send block from disk
+ map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
+ if (mi != mapBlockIndex.end())
+ {
+ CBlock block;
+ block.ReadFromDisk((*mi).second);
+ if (inv.type == MSG_BLOCK)
+ pfrom->PushMessage("block", block);
+ else // MSG_FILTERED_BLOCK)
+ {
+ LOCK(pfrom->cs_filter);
+ if (pfrom->pfilter)
+ {
+ CMerkleBlock merkleBlock(block, *pfrom->pfilter);
+ pfrom->PushMessage("merkleblock", merkleBlock);
+ // CMerkleBlock just contains hashes, so also push any transactions in the block the client did not see
+ // This avoids hurting performance by pointlessly requiring a round-trip
+ // Note that there is currently no way for a node to request any single transactions we didnt send here -
+ // they must either disconnect and retry or request the full block.
+ // Thus, the protocol spec specified allows for us to provide duplicate txn here,
+ // however we MUST always provide at least what the remote peer needs
+ typedef std::pair<unsigned int, uint256> PairType;
+ BOOST_FOREACH(PairType& pair, merkleBlock.vMatchedTxn)
+ if (!pfrom->setInventoryKnown.count(CInv(MSG_TX, pair.second)))
+ pfrom->PushMessage("tx", block.vtx[pair.first]);
+ }
+ // else
+ // no response
+ }
+
+ // Trigger them to send a getblocks request for the next batch of inventory
+ if (inv.hash == pfrom->hashContinue)
+ {
+ // Bypass PushInventory, this must send even if redundant,
+ // and we want it right after the last block so they don't
+ // wait for other stuff first.
+ vector<CInv> vInv;
+ vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
+ pfrom->PushMessage("inv", vInv);
+ pfrom->hashContinue = 0;
+ }
+ }
+ }
+ else if (inv.IsKnownType())
+ {
+ // Send stream from relay memory
+ bool pushed = false;
+ {
+ LOCK(cs_mapRelay);
+ map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
+ if (mi != mapRelay.end()) {
+ pfrom->PushMessage(inv.GetCommand(), (*mi).second);
+ pushed = true;
+ }
+ }
+ if (!pushed && inv.type == MSG_TX) {
+ LOCK(mempool.cs);
+ if (mempool.exists(inv.hash)) {
+ CTransaction tx = mempool.lookup(inv.hash);
+ CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
+ ss.reserve(1000);
+ ss << tx;
+ pfrom->PushMessage("tx", ss);
+ pushed = true;
+ }
+ }
+ if (!pushed) {
+ vNotFound.push_back(inv);
+ }
+ }
+
+ // Track requests for our stuff.
+ Inventory(inv.hash);
+ }
+ }
+
+ pfrom->vRecvGetData.erase(pfrom->vRecvGetData.begin(), it);
+
+ if (!vNotFound.empty()) {
+ // Let the peer know that we didn't find what it asked for, so it doesn't
+ // have to wait around forever. Currently only SPV clients actually care
+ // about this message: it's needed when they are recursively walking the
+ // dependencies of relevant unconfirmed transactions. SPV clients want to
+ // do that because they want to know about (and store and rebroadcast and
+ // risk analyze) the dependencies of transactions relevant to them, without
+ // having to download the entire memory pool.
+ pfrom->PushMessage("notfound", vNotFound);
+ }
+}
+
bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
{
RandAddSeedPerfmon();
@@ -3104,7 +3213,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
// Change version
pfrom->PushMessage("verack");
- pfrom->vSend.SetVersion(min(pfrom->nVersion, PROTOCOL_VERSION));
+ pfrom->ssSend.SetVersion(min(pfrom->nVersion, PROTOCOL_VERSION));
if (!pfrom->fInbound)
{
@@ -3168,7 +3277,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
else if (strCommand == "verack")
{
- pfrom->vRecv.SetVersion(min(pfrom->nVersion, PROTOCOL_VERSION));
+ pfrom->SetRecvVersion(min(pfrom->nVersion, PROTOCOL_VERSION));
}
@@ -3302,101 +3411,11 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
if (fDebugNet || (vInv.size() != 1))
printf("received getdata (%"PRIszu" invsz)\n", vInv.size());
- vector<CInv> vNotFound;
- BOOST_FOREACH(const CInv& inv, vInv)
- {
- if (fShutdown)
- return true;
- if (fDebugNet || (vInv.size() == 1))
- printf("received getdata for: %s\n", inv.ToString().c_str());
+ if ((fDebugNet && vInv.size() > 0) || (vInv.size() == 1))
+ printf("received getdata for: %s\n", vInv[0].ToString().c_str());
- if (inv.type == MSG_BLOCK || inv.type == MSG_FILTERED_BLOCK)
- {
- // Send block from disk
- map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(inv.hash);
- if (mi != mapBlockIndex.end())
- {
- CBlock block;
- block.ReadFromDisk((*mi).second);
- if (inv.type == MSG_BLOCK)
- pfrom->PushMessage("block", block);
- else // MSG_FILTERED_BLOCK)
- {
- LOCK(pfrom->cs_filter);
- if (pfrom->pfilter)
- {
- CMerkleBlock merkleBlock(block, *pfrom->pfilter);
- pfrom->PushMessage("merkleblock", merkleBlock);
- // CMerkleBlock just contains hashes, so also push any transactions in the block the client did not see
- // This avoids hurting performance by pointlessly requiring a round-trip
- // Note that there is currently no way for a node to request any single transactions we didnt send here -
- // they must either disconnect and retry or request the full block.
- // Thus, the protocol spec specified allows for us to provide duplicate txn here,
- // however we MUST always provide at least what the remote peer needs
- typedef std::pair<unsigned int, uint256> PairType;
- BOOST_FOREACH(PairType& pair, merkleBlock.vMatchedTxn)
- if (!pfrom->setInventoryKnown.count(CInv(MSG_TX, pair.second)))
- pfrom->PushMessage("tx", block.vtx[pair.first]);
- }
- // else
- // no response
- }
-
- // Trigger them to send a getblocks request for the next batch of inventory
- if (inv.hash == pfrom->hashContinue)
- {
- // Bypass PushInventory, this must send even if redundant,
- // and we want it right after the last block so they don't
- // wait for other stuff first.
- vector<CInv> vInv;
- vInv.push_back(CInv(MSG_BLOCK, hashBestChain));
- pfrom->PushMessage("inv", vInv);
- pfrom->hashContinue = 0;
- }
- }
- }
- else if (inv.IsKnownType())
- {
- // Send stream from relay memory
- bool pushed = false;
- {
- LOCK(cs_mapRelay);
- map<CInv, CDataStream>::iterator mi = mapRelay.find(inv);
- if (mi != mapRelay.end()) {
- pfrom->PushMessage(inv.GetCommand(), (*mi).second);
- pushed = true;
- }
- }
- if (!pushed && inv.type == MSG_TX) {
- LOCK(mempool.cs);
- if (mempool.exists(inv.hash)) {
- CTransaction tx = mempool.lookup(inv.hash);
- CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
- ss.reserve(1000);
- ss << tx;
- pfrom->PushMessage("tx", ss);
- pushed = true;
- }
- }
- if (!pushed) {
- vNotFound.push_back(inv);
- }
- }
-
- // Track requests for our stuff.
- Inventory(inv.hash);
-
- if (!vNotFound.empty()) {
- // Let the peer know that we didn't find what it asked for, so it doesn't
- // have to wait around forever. Currently only SPV clients actually care
- // about this message: it's needed when they are recursively walking the
- // dependencies of relevant unconfirmed transactions. SPV clients want to
- // do that because they want to know about (and store and rebroadcast and
- // risk analyze) the dependencies of transactions relevant to them, without
- // having to download the entire memory pool.
- pfrom->PushMessage("notfound", vNotFound);
- }
- }
+ pfrom->vRecvGetData.insert(pfrom->vRecvGetData.end(), vInv.begin(), vInv.end());
+ ProcessGetData(pfrom);
}
@@ -3705,13 +3724,11 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
return true;
}
+// requires LOCK(cs_vRecvMsg)
bool ProcessMessages(CNode* pfrom)
{
- CDataStream& vRecv = pfrom->vRecv;
- if (vRecv.empty())
- return true;
//if (fDebug)
- // printf("ProcessMessages(%u bytes)\n", vRecv.size());
+ // printf("ProcessMessages(%zu messages)\n", pfrom->vRecvMsg.size());
//
// Message format
@@ -3721,33 +3738,41 @@ bool ProcessMessages(CNode* pfrom)
// (4) checksum
// (x) data
//
+ bool fOk = true;
- loop
- {
+ if (!pfrom->vRecvGetData.empty())
+ ProcessGetData(pfrom);
+
+ std::deque<CNetMessage>::iterator it = pfrom->vRecvMsg.begin();
+ while (!pfrom->fDisconnect && it != pfrom->vRecvMsg.end()) {
// Don't bother if send buffer is too full to respond anyway
- if (pfrom->vSend.size() >= SendBufferSize())
+ if (pfrom->nSendSize >= SendBufferSize())
+ break;
+
+ // get next message
+ CNetMessage& msg = *it;
+
+ //if (fDebug)
+ // printf("ProcessMessages(message %u msgsz, %zu bytes, complete:%s)\n",
+ // msg.hdr.nMessageSize, msg.vRecv.size(),
+ // msg.complete() ? "Y" : "N");
+
+ // end, if an incomplete message is found
+ if (!msg.complete())
break;
+ // at this point, any failure means we can delete the current message
+ it++;
+
// Scan for message start
- CDataStream::iterator pstart = search(vRecv.begin(), vRecv.end(), BEGIN(pchMessageStart), END(pchMessageStart));
- int nHeaderSize = vRecv.GetSerializeSize(CMessageHeader());
- if (vRecv.end() - pstart < nHeaderSize)
- {
- if ((int)vRecv.size() > nHeaderSize)
- {
- printf("\n\nPROCESSMESSAGE MESSAGESTART NOT FOUND\n\n");
- vRecv.erase(vRecv.begin(), vRecv.end() - nHeaderSize);
- }
+ if (memcmp(msg.hdr.pchMessageStart, pchMessageStart, sizeof(pchMessageStart)) != 0) {
+ printf("\n\nPROCESSMESSAGE: INVALID MESSAGESTART\n\n");
+ fOk = false;
break;
}
- if (pstart - vRecv.begin() > 0)
- printf("\n\nPROCESSMESSAGE SKIPPED %"PRIpdd" BYTES\n\n", pstart - vRecv.begin());
- vRecv.erase(vRecv.begin(), pstart);
// Read header
- vector<char> vHeaderSave(vRecv.begin(), vRecv.begin() + nHeaderSize);
- CMessageHeader hdr;
- vRecv >> hdr;
+ CMessageHeader& hdr = msg.hdr;
if (!hdr.IsValid())
{
printf("\n\nPROCESSMESSAGE: ERRORS IN HEADER %s\n\n\n", hdr.GetCommand().c_str());
@@ -3757,19 +3782,9 @@ bool ProcessMessages(CNode* pfrom)
// Message size
unsigned int nMessageSize = hdr.nMessageSize;
- if (nMessageSize > MAX_SIZE)
- {
- printf("ProcessMessages(%s, %u bytes) : nMessageSize > MAX_SIZE\n", strCommand.c_str(), nMessageSize);
- continue;
- }
- if (nMessageSize > vRecv.size())
- {
- // Rewind and wait for rest of message
- vRecv.insert(vRecv.begin(), vHeaderSave.begin(), vHeaderSave.end());
- break;
- }
// Checksum
+ CDataStream& vRecv = msg.vRecv;
uint256 hash = Hash(vRecv.begin(), vRecv.begin() + nMessageSize);
unsigned int nChecksum = 0;
memcpy(&nChecksum, &hash, sizeof(nChecksum));
@@ -3780,20 +3795,16 @@ bool ProcessMessages(CNode* pfrom)
continue;
}
- // Copy message to its own buffer
- CDataStream vMsg(vRecv.begin(), vRecv.begin() + nMessageSize, vRecv.nType, vRecv.nVersion);
- vRecv.ignore(nMessageSize);
-
// Process message
bool fRet = false;
try
{
{
LOCK(cs_main);
- fRet = ProcessMessage(pfrom, strCommand, vMsg);
+ fRet = ProcessMessage(pfrom, strCommand, vRecv);
}
if (fShutdown)
- return true;
+ break;
}
catch (std::ios_base::failure& e)
{
@@ -3822,8 +3833,11 @@ bool ProcessMessages(CNode* pfrom)
printf("ProcessMessage(%s, %u bytes) FAILED\n", strCommand.c_str(), nMessageSize);
}
- vRecv.Compact();
- return true;
+ // In case the connection got shut down, its receive buffer was wiped
+ if (!pfrom->fDisconnect)
+ pfrom->vRecvMsg.erase(pfrom->vRecvMsg.begin(), it);
+
+ return fOk;
}
@@ -3837,7 +3851,7 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
// Keep-alive ping. We send a nonce of zero because we don't use it anywhere
// right now.
- if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSend.empty()) {
+ if (pto->nLastSend && GetTime() - pto->nLastSend > 30 * 60 && pto->vSendMsg.empty()) {
uint64 nonce = 0;
if (pto->nVersion > BIP0031_VERSION)
pto->PushMessage("ping", nonce);
generated by cgit v1.2.3 (git 2.26.2) at 2024-08-25 16:15:04 +0000