net: Avoid wasting inv traffic during IBD

1 files changed, 14 insertions, 3 deletions

diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 4fb4e1c120..02ad41ab00 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -4392,10 +4392,21 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
             !pto->HasPermission(PF_FORCERELAY)) {
             CAmount currentFilter = m_mempool.GetMinFee(gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
             int64_t timeNow = GetTimeMicros();
+            static FeeFilterRounder g_filter_rounder{CFeeRate{DEFAULT_MIN_RELAY_TX_FEE}};
+            if (m_chainman.ActiveChainstate().IsInitialBlockDownload()) {
+                // Received tx-inv messages are discarded when the active
+                // chainstate is in IBD, so tell the peer to not send them.
+                currentFilter = MAX_MONEY;
+            } else {
+                static const CAmount MAX_FILTER{g_filter_rounder.round(MAX_MONEY)};
+                if (pto->m_tx_relay->lastSentFeeFilter == MAX_FILTER) {
+                    // Send the current filter if we sent MAX_FILTER previously
+                    // and made it out of IBD.
+                    pto->m_tx_relay->nextSendTimeFeeFilter = timeNow - 1;
+                }
+            }
             if (timeNow > pto->m_tx_relay->nextSendTimeFeeFilter) {
-                static CFeeRate default_feerate(DEFAULT_MIN_RELAY_TX_FEE);
-                static FeeFilterRounder filterRounder(default_feerate);
-                CAmount filterToSend = filterRounder.round(currentFilter);
+                CAmount filterToSend = g_filter_rounder.round(currentFilter);
                 // We always have a fee filter of at least minRelayTxFee
                 filterToSend = std::max(filterToSend, ::minRelayTxFee.GetFeePerK());
                 if (filterToSend != pto->m_tx_relay->lastSentFeeFilter) {