Merge #16171: Remove -mempoolreplacement to prevent needless block prop slowness.

8053e5cdad Remove -mempoolreplacement to prevent needless block prop slowness. (Matt Corallo)

Pull request description:

  At this point there is no reasonable excuse to disable opt-in RBF,
  and, unlike when this option was added, there are now significant
  issues created when disabling it (in the form of compact block
  reconstruction failures). Further, it breaks a lot of modern wallet
  behavior.

  This removes an option that is:

  * (a) only useful when a large portion of (other) miners enforce it as well
  * (b) is detrimental to everyone (income for miners, RBF notifications for others) who uses it individually otherwise
  * (c) is effectively unused
  * (d) is often confused with disabling RBF (rather than just remaining stubbornly unaware of it while the rest of the network lets it through)

ACKs for commit 8053e5:
  practicalswift:
    utACK 8053e5cdade87550f0381d51feab81dedfec6c46
  promag:
    Deprecation would save from unlikely rantings, still ACK 8053e5c.
  jtimon:
    utACK 8053e5cdade87550f0381d51feab81dedfec6c46
  ajtowns:
    ACK 8053e5cdade87550f0381d51feab81dedfec6c46 -- quick code review, checked tests work
  MarcoFalke:
    ACK 8053e5cdade87550f0381d51feab81dedfec6c46

Tree-SHA512: 01aee8905b2487fc38a3a86649d422d2d2345bc60f878889ebda4b8680783e1f1a97c2000c27ef086719501be2abc2911b2039a259a5e5c04f3b24ff02b0427e

1 files changed, 0 insertions, 10 deletions

diff --git a/src/init.cpp b/src/init.cpp
index 93aa6f21b5..2a10f28a84 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -523,7 +523,6 @@ void SetupServerArgs()
     gArgs.AddArg("-bytespersigop", strprintf("Equivalent bytes per sigop in transactions for relay and mining (default: %u)", DEFAULT_BYTES_PER_SIGOP), false, OptionsCategory::NODE_RELAY);
     gArgs.AddArg("-datacarrier", strprintf("Relay and mine data carrier transactions (default: %u)", DEFAULT_ACCEPT_DATACARRIER), false, OptionsCategory::NODE_RELAY);
     gArgs.AddArg("-datacarriersize", strprintf("Maximum size of data in data carrier transactions we relay and mine (default: %u)", MAX_OP_RETURN_RELAY), false, OptionsCategory::NODE_RELAY);
-    gArgs.AddArg("-mempoolreplacement", strprintf("Enable transaction replacement in the memory pool (default: %u)", DEFAULT_ENABLE_REPLACEMENT), false, OptionsCategory::NODE_RELAY);
     gArgs.AddArg("-minrelaytxfee=<amt>", strprintf("Fees (in %s/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: %s)",
         CURRENCY_UNIT, FormatMoney(DEFAULT_MIN_RELAY_TX_FEE)), false, OptionsCategory::NODE_RELAY);
     gArgs.AddArg("-whitelistforcerelay", strprintf("Force relay of transactions from whitelisted peers even if the transactions were already in the mempool or violate local relay policy (default: %d)", DEFAULT_WHITELISTFORCERELAY), false, OptionsCategory::NODE_RELAY);
@@ -1175,15 +1174,6 @@ bool AppInitParameterInteraction()
 
     nMaxTipAge = gArgs.GetArg("-maxtipage", DEFAULT_MAX_TIP_AGE);
 
-    fEnableReplacement = gArgs.GetBoolArg("-mempoolreplacement", DEFAULT_ENABLE_REPLACEMENT);
-    if ((!fEnableReplacement) && gArgs.IsArgSet("-mempoolreplacement")) {
-        // Minimal effort at forwards compatibility
-        std::string strReplacementModeList = gArgs.GetArg("-mempoolreplacement", "");  // default is impossible
-        std::vector<std::string> vstrReplacementModes;
-        boost::split(vstrReplacementModes, strReplacementModeList, boost::is_any_of(","));
-        fEnableReplacement = (std::find(vstrReplacementModes.begin(), vstrReplacementModes.end(), "fee") != vstrReplacementModes.end());
-    }
-
     return true;
 }