[tools] update nNextInvSend to use mockable time

Author: amitiuttarwar

src/net.h

@@ -762,7 +762,7 @@ class CNode
         bool fSendMempool GUARDED_BY(cs_tx_inventory){false};
         // Last time a "MEMPOOL" request was serviced.
         std::atomic<std::chrono::seconds> m_last_mempool_req{std::chrono::seconds{0}};
-        int64_t nNextInvSend{0};
+        std::chrono::microseconds nNextInvSend{0};
 
         CCriticalSection cs_feeFilter;
         // Minimum fee rate with which to filter inv's to this node

src/net_processing.cpp

@@ -3548,6 +3548,8 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
 
         // Address refresh broadcast
         int64_t nNow = GetTimeMicros();
+        auto current_time = GetTime<std::chrono::microseconds>();
+
         if (pto->IsAddrRelayPeer() && !::ChainstateActive().IsInitialBlockDownload() && pto->nNextLocalAddrSend < nNow) {
             AdvertiseLocal(pto);
             pto->nNextLocalAddrSend = PoissonNextSend(nNow, AVG_LOCAL_ADDRESS_BROADCAST_INTERVAL);
@@ -3768,13 +3770,13 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
                 LOCK(pto->m_tx_relay->cs_tx_inventory);
                 // Check whether periodic sends should happen
                 bool fSendTrickle = pto->HasPermission(PF_NOBAN);
-                if (pto->m_tx_relay->nNextInvSend < nNow) {
+                if (pto->m_tx_relay->nNextInvSend < current_time) {
                     fSendTrickle = true;
                     if (pto->fInbound) {
-                        pto->m_tx_relay->nNextInvSend = connman->PoissonNextSendInbound(nNow, INVENTORY_BROADCAST_INTERVAL);
+                        pto->m_tx_relay->nNextInvSend = std::chrono::microseconds{connman->PoissonNextSendInbound(nNow, INVENTORY_BROADCAST_INTERVAL)};
                     } else {
                         // Use half the delay for outbound peers, as there is less privacy concern for them.
-                        pto->m_tx_relay->nNextInvSend = PoissonNextSend(nNow, INVENTORY_BROADCAST_INTERVAL >> 1);
+                        pto->m_tx_relay->nNextInvSend = PoissonNextSend(current_time, std::chrono::seconds{INVENTORY_BROADCAST_INTERVAL >> 1});
                     }
                 }
 
@@ -3889,7 +3891,7 @@ bool PeerLogicValidation::SendMessages(CNode* pto)
             connman->PushMessage(pto, msgMaker.Make(NetMsgType::INV, vInv));
 
         // Detect whether we're stalling
-        const auto current_time = GetTime<std::chrono::microseconds>();
+        current_time = GetTime<std::chrono::microseconds>();
         // nNow is the current system time (GetTimeMicros is not mockable) and
         // should be replaced by the mockable current_time eventually
         nNow = GetTimeMicros();