net: No need to check individually for disconnection anymore

src/main.cpp

@@ -6527,7 +6527,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
             // Ping automatically sent as a latency probe & keepalive.
             pingSend = true;
         }
-        if (pingSend && !pto->fDisconnect) {
+        if (pingSend) {
             uint64_t nonce = 0;
             while (nonce == 0) {
                 GetRandBytes((unsigned char*)&nonce, sizeof(nonce));
@@ -6610,7 +6610,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
         if (pindexBestHeader == NULL)
             pindexBestHeader = chainActive.Tip();
         bool fFetch = state.fPreferredDownload || (nPreferredDownload == 0 && !pto->fClient && !pto->fOneShot); // Download if this is a nice peer, or we have no nice peers and this one might do.
-        if (!state.fSyncStarted && !pto->fClient && !pto->fDisconnect && !fImporting && !fReindex) {
+        if (!state.fSyncStarted && !pto->fClient && !fImporting && !fReindex) {
             // Only actively request headers from a single peer, unless we're close to today.
             if ((nSyncStarted == 0 && fFetch) || pindexBestHeader->GetBlockTime() > GetAdjustedTime() - 24 * 60 * 60) {
                 state.fSyncStarted = true;
@@ -6897,7 +6897,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
 
         // Detect whether we're stalling
         nNow = GetTimeMicros();
-        if (!pto->fDisconnect && state.nStallingSince && state.nStallingSince < nNow - 1000000 * BLOCK_STALLING_TIMEOUT) {
+        if (state.nStallingSince && state.nStallingSince < nNow - 1000000 * BLOCK_STALLING_TIMEOUT) {
             // Stalling only triggers when the block download window cannot move. During normal steady state,
             // the download window should be much larger than the to-be-downloaded set of blocks, so disconnection
             // should only happen during initial block download.
@@ -6910,7 +6910,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
         // We compensate for other peers to prevent killing off peers due to our own downstream link
         // being saturated. We only count validated in-flight blocks so peers can't advertise non-existing block hashes
         // to unreasonably increase our timeout.
-        if (!pto->fDisconnect && state.vBlocksInFlight.size() > 0) {
+        if (state.vBlocksInFlight.size() > 0) {
             QueuedBlock &queuedBlock = state.vBlocksInFlight.front();
             int nOtherPeersWithValidatedDownloads = nPeersWithValidatedDownloads - (state.nBlocksInFlightValidHeaders > 0);
             if (nNow > state.nDownloadingSince + consensusParams.nPowTargetSpacing * (BLOCK_DOWNLOAD_TIMEOUT_BASE + BLOCK_DOWNLOAD_TIMEOUT_PER_PEER * nOtherPeersWithValidatedDownloads)) {
@@ -6924,7 +6924,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
         // Message: getdata (blocks)
         //
         vector<CInv> vGetData;
-        if (!pto->fDisconnect && !pto->fClient && (fFetch || !IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
+        if (!pto->fClient && (fFetch || !IsInitialBlockDownload()) && state.nBlocksInFlight < MAX_BLOCKS_IN_TRANSIT_PER_PEER) {
             vector<CBlockIndex*> vToDownload;
             NodeId staller = -1;
             FindNextBlocksToDownload(pto->GetId(), MAX_BLOCKS_IN_TRANSIT_PER_PEER - state.nBlocksInFlight, vToDownload, staller, consensusParams);
@@ -6946,7 +6946,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
         //
         // Message: getdata (non-blocks)
         //
-        while (!pto->fDisconnect && !pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
+        while (!pto->mapAskFor.empty() && (*pto->mapAskFor.begin()).first <= nNow)
         {
             const CInv& inv = (*pto->mapAskFor.begin()).second;
             if (!AlreadyHave(inv))
@@ -6972,7 +6972,7 @@ bool SendMessages(CNode* pto, CConnman& connman)
         // Message: feefilter
         //
         // We don't want white listed peers to filter txs to us if we have -whitelistforcerelay
-        if (!pto->fDisconnect && pto->nVersion >= FEEFILTER_VERSION && GetBoolArg("-feefilter", DEFAULT_FEEFILTER) &&
+        if (pto->nVersion >= FEEFILTER_VERSION && GetBoolArg("-feefilter", DEFAULT_FEEFILTER) &&
             !(pto->fWhitelisted && GetBoolArg("-whitelistforcerelay", DEFAULT_WHITELISTFORCERELAY))) {
             CAmount currentFilter = mempool.GetMinFee(GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000).GetFeePerK();
             int64_t timeNow = GetTimeMicros();