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Merge bitcoin/bitcoin#23706: rpc: getblockfrompeer followups

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923312fbf6 rpc: use peer_id, block_hash for FetchBlock (Sjors Provoost)
34d5399211 rpc: more detailed errors for getblockfrompeer (Sjors Provoost)
60243cac72 rpc: turn already downloaded into error in getblockfrompeer (Sjors Provoost)
809d66bb65 rpc: clarify getblockfrompeer behavior when called multiple times (Sjors Provoost)
0e3d7c5ee1 refactor: drop redundant hash argument from FetchBlock (Sjors Provoost)
8d1a3e6498 rpc: allow empty JSON object result (Sjors Provoost)
bfbf91d0b2 test: fancier Python for getblockfrompeer (Sjors Provoost)

Pull request description:

  Followups from #20295.

ACKs for top commit:
  jonatack:
    ACK 923312fbf6 📦
  fjahr:
    tested ACK 923312fbf6

Tree-SHA512: da9eca76e302e249409c9d7f0d16cca668ed981e2ab6ca2d1743dad0d830b94b1bc5ffb9028a00764b863201945c273cc8f4409a4c9ca3817830007dffa2bc20
This commit is contained in:
MarcoFalke
2022-01-25 18:48:35 +01:00
parent b94d0c7af1 923312fbf6
commit 39d9bbe4ac
7 changed files with 48 additions and 58 deletions
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36
src/net_processing.cpp
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@@ -320,7 +320,7 @@ public:
/** Implement PeerManager */
void StartScheduledTasks(CScheduler& scheduler) override;
void CheckForStaleTipAndEvictPeers() override;
bool FetchBlock(NodeId id, const uint256& hash, const CBlockIndex& index) override;
std::optional<std::string> FetchBlock(NodeId peer_id, const CBlockIndex& block_index) override;
bool GetNodeStateStats(NodeId nodeid, CNodeStateStats& stats) const override;
bool IgnoresIncomingTxs() override { return m_ignore_incoming_txs; }
void SendPings() override;
@@ -1460,39 +1460,39 @@ bool PeerManagerImpl::BlockRequestAllowed(const CBlockIndex* pindex)
(GetBlockProofEquivalentTime(*pindexBestHeader, *pindex, *pindexBestHeader, m_chainparams.GetConsensus()) < STALE_RELAY_AGE_LIMIT);
}
bool PeerManagerImpl::FetchBlock(NodeId id, const uint256& hash, const CBlockIndex& index)
std::optional<std::string> PeerManagerImpl::FetchBlock(NodeId peer_id, const CBlockIndex& block_index)
{
if (fImporting || fReindex) return false;
if (fImporting) return "Importing...";
if (fReindex) return "Reindexing...";
LOCK(cs_main);
// Ensure this peer exists and hasn't been disconnected
CNodeState* state = State(id);
if (state == nullptr) return false;
CNodeState* state = State(peer_id);
if (state == nullptr) return "Peer does not exist";
// Ignore pre-segwit peers
if (!state->fHaveWitness) return false;
if (!state->fHaveWitness) return "Pre-SegWit peer";
// Mark block as in-flight unless it already is
if (!BlockRequested(id, index)) return false;
// Mark block as in-flight unless it already is (for this peer).
// If a block was already in-flight for a different peer, its BLOCKTXN
// response will be dropped.
if (!BlockRequested(peer_id, block_index)) return "Already requested from this peer";
// Construct message to request the block
const uint256& hash{block_index.GetBlockHash()};
std::vector<CInv> invs{CInv(MSG_BLOCK | MSG_WITNESS_FLAG, hash)};
// Send block request message to the peer
bool success = m_connman.ForNode(id, [this, &invs](CNode* node) {
bool success = m_connman.ForNode(peer_id, [this, &invs](CNode* node) {
const CNetMsgMaker msgMaker(node->GetCommonVersion());
this->m_connman.PushMessage(node, msgMaker.Make(NetMsgType::GETDATA, invs));
return true;
});
if (success) {
LogPrint(BCLog::NET, "Requesting block %s from peer=%d\n",
hash.ToString(), id);
} else {
RemoveBlockRequest(hash);
LogPrint(BCLog::NET, "Failed to request block %s from peer=%d\n",
hash.ToString(), id);
}
return success;
if (!success) return "Peer not fully connected";
LogPrint(BCLog::NET, "Requesting block %s from peer=%d\n",
hash.ToString(), peer_id);
return std::nullopt;
}
std::unique_ptr<PeerManager> PeerManager::make(const CChainParams& chainparams, CConnman& connman, AddrMan& addrman,