Merge #15680: Remove resendwallettransactions RPC method

ea1a2d8794 [wallet] Remove ResendWalletTransactionsBefore (John Newbery)
f5162458cd [rpc] remove resendwallettransactions RPC (John Newbery)

Pull request description:

  Remove resendwallettransactions RPC method

  This RPC was added for testing wallet rebroadcasts. Since we now have a real test for wallet rebroadcasts, it's no longer needed.

  The call in wallet_basic.py can be removed because wallet_resendwallettransactions.py tests wallet rebroadcast.

ACKs for commit ea1a2d:
  MarcoFalke:
    re-utACK ea1a2d8794
  promag:
    utACK ea1a2d8.

Tree-SHA512: 48245d947be1a2d2b8c30d2946105818c454a03b70b63534ecadf2144da64dafe1c9527ea670a5f4d1acd05ccdfc6c9be43ca636ee2ba58a8b7a7b2fc7bc88fd

3 files changed, 21 insertions, 84 deletions

diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 47bb44f7a3..60f95c8195 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -2668,50 +2668,6 @@ static UniValue unloadwallet(const JSONRPCRequest& request)
     return NullUniValue;
 }
 
-static UniValue resendwallettransactions(const JSONRPCRequest& request)
-{
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    CWallet* const pwallet = wallet.get();
-
-    if (!EnsureWalletIsAvailable(pwallet, request.fHelp)) {
-        return NullUniValue;
-    }
-
-    if (request.fHelp || request.params.size() != 0)
-        throw std::runtime_error(
-            RPCHelpMan{"resendwallettransactions",
-                "Immediately re-broadcast unconfirmed wallet transactions to all peers.\n"
-                "Intended only for testing; the wallet code periodically re-broadcasts\n"
-                "automatically.\n",
-                {},
-                RPCResult{
-            "Returns an RPC error if -walletbroadcast is set to false.\n"
-            "Returns array of transaction ids that were re-broadcast.\n"
-                },
-                 RPCExamples{""},
-             }.ToString()
-            );
-
-    if (!pwallet->chain().p2pEnabled()) {
-        throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
-    }
-
-    auto locked_chain = pwallet->chain().lock();
-    LOCK(pwallet->cs_wallet);
-
-    if (!pwallet->GetBroadcastTransactions()) {
-        throw JSONRPCError(RPC_WALLET_ERROR, "Error: Wallet transaction broadcasting is disabled with -walletbroadcast");
-    }
-
-    std::vector<uint256> txids = pwallet->ResendWalletTransactionsBefore(*locked_chain, GetTime());
-    UniValue result(UniValue::VARR);
-    for (const uint256& txid : txids)
-    {
-        result.push_back(txid.ToString());
-    }
-    return result;
-}
-
 static UniValue listunspent(const JSONRPCRequest& request)
 {
     std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
@@ -4085,7 +4041,6 @@ UniValue importmulti(const JSONRPCRequest& request);
 static const CRPCCommand commands[] =
 { //  category              name                                actor (function)                argNames
     //  --------------------- ------------------------          -----------------------         ----------
-    { "hidden",             "resendwallettransactions",         &resendwallettransactions,      {} },
     { "rawtransactions",    "fundrawtransaction",               &fundrawtransaction,            {"hexstring","options","iswitness"} },
     { "wallet",             "abandontransaction",               &abandontransaction,            {"txid"} },
     { "wallet",             "abortrescan",                      &abortrescan,                   {} },
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index b137bbb9d5..f9fb73087d 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2110,53 +2110,37 @@ bool CWalletTx::IsEquivalentTo(const CWalletTx& _tx) const
         return CTransaction(tx1) == CTransaction(tx2);
 }
 
-std::vector<uint256> CWallet::ResendWalletTransactionsBefore(interfaces::Chain::Lock& locked_chain, int64_t nTime)
-{
-    std::vector<uint256> result;
-
-    LOCK(cs_wallet);
-
-    // Sort them in chronological order
-    std::multimap<unsigned int, CWalletTx*> mapSorted;
-    for (std::pair<const uint256, CWalletTx>& item : mapWallet)
-    {
-        CWalletTx& wtx = item.second;
-        // Don't rebroadcast if newer than nTime:
-        if (wtx.nTimeReceived > nTime)
-            continue;
-        mapSorted.insert(std::make_pair(wtx.nTimeReceived, &wtx));
-    }
-    for (const std::pair<const unsigned int, CWalletTx*>& item : mapSorted)
-    {
-        CWalletTx& wtx = *item.second;
-        if (wtx.RelayWalletTransaction(locked_chain)) {
-            result.push_back(wtx.GetHash());
-        }
-    }
-    return result;
-}
-
 void CWallet::ResendWalletTransactions(interfaces::Chain::Lock& locked_chain, int64_t nBestBlockTime)
 {
     // Do this infrequently and randomly to avoid giving away
     // that these are our transactions.
-    if (GetTime() < nNextResend || !fBroadcastTransactions)
-        return;
+    if (GetTime() < nNextResend || !fBroadcastTransactions) return;
     bool fFirst = (nNextResend == 0);
     nNextResend = GetTime() + GetRand(30 * 60);
-    if (fFirst)
-        return;
+    if (fFirst) return;
 
     // Only do it if there's been a new block since last time
-    if (nBestBlockTime < nLastResend)
-        return;
+    if (nBestBlockTime < nLastResend) return;
     nLastResend = GetTime();
 
-    // Rebroadcast unconfirmed txes older than 5 minutes before the last
-    // block was found:
-    std::vector<uint256> relayed = ResendWalletTransactionsBefore(locked_chain, nBestBlockTime-5*60);
-    if (!relayed.empty())
-        WalletLogPrintf("%s: rebroadcast %u unconfirmed transactions\n", __func__, relayed.size());
+    int relayed_tx_count = 0;
+
+    { // cs_wallet scope
+        LOCK(cs_wallet);
+
+        // Relay transactions
+        for (std::pair<const uint256, CWalletTx>& item : mapWallet) {
+            CWalletTx& wtx = item.second;
+            // only rebroadcast unconfirmed txes older than 5 minutes before the
+            // last block was found
+            if (wtx.nTimeReceived > nBestBlockTime - 5 * 60) continue;
+            relayed_tx_count += wtx.RelayWalletTransaction(locked_chain) ? 1 : 0;
+        }
+    } // cs_wallet
+
+    if (relayed_tx_count > 0) {
+        WalletLogPrintf("%s: rebroadcast %u unconfirmed transactions\n", __func__, relayed_tx_count);
+    }
 }
 
 /** @} */ // end of mapWallet
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 24a1b92f7d..5960fc1c71 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -947,8 +947,6 @@ public:
     void TransactionRemovedFromMempool(const CTransactionRef &ptx) override;
     void ReacceptWalletTransactions(interfaces::Chain::Lock& locked_chain) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     void ResendWalletTransactions(interfaces::Chain::Lock& locked_chain, int64_t nBestBlockTime) override;
-    // ResendWalletTransactionsBefore may only be called if fBroadcastTransactions!
-    std::vector<uint256> ResendWalletTransactionsBefore(interfaces::Chain::Lock& locked_chain, int64_t nTime);
     CAmount GetBalance(const isminefilter& filter=ISMINE_SPENDABLE, const int min_depth=0) const;
     CAmount GetUnconfirmedBalance() const;
     CAmount GetImmatureBalance() const;