From 890a92eba819763a4dd182245cc7daddacec2ef4 Mon Sep 17 00:00:00 2001 From: MarcoFalke Date: Thu, 9 May 2019 09:29:08 -0400 Subject: [PATCH] doc: Mention blocksonly in reduce-traffic.md, unhide option Github-Pull: #15990 Rebased-From: fa8ced32a60dea37ac169241cf9a1f708ef46c4b --- doc/reduce-traffic.md | 13 +++++++++++++ src/init.cpp | 2 +- 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/doc/reduce-traffic.md b/doc/reduce-traffic.md index dd1469f563..5a71f62e0f 100644 --- a/doc/reduce-traffic.md +++ b/doc/reduce-traffic.md @@ -35,3 +35,16 @@ blocks and transactions to fewer nodes. Reducing the maximum connected nodes to a minimum could be desirable if traffic limits are tiny. Keep in mind that bitcoin's trustless model works best if you are connected to a handful of nodes. + +## 4. Turn off transaction relay (`-blocksonly`) + +Forwarding transactions to peers increases the P2P traffic. To only sync blocks +with other peers, you can disable transaction relay. + +Be reminded of the effects of this setting. + +- Fee estimation will no longer work. +- Not relaying other's transactions could hurt your privacy if used while a + wallet is loaded or if you use the node to broadcast transactions. +- It makes block propagation slower because compact block relay can only be + used when transaction relay is enabled. diff --git a/src/init.cpp b/src/init.cpp index 52f1f0d84f..7cb7092254 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -376,7 +376,7 @@ void SetupServerArgs() gArgs.AddArg("-blocksdir=", "Specify blocks directory (default: /blocks)", false, OptionsCategory::OPTIONS); gArgs.AddArg("-blocknotify=", "Execute command when the best block changes (%s in cmd is replaced by block hash)", false, OptionsCategory::OPTIONS); gArgs.AddArg("-blockreconstructionextratxn=", strprintf("Extra transactions to keep in memory for compact block reconstructions (default: %u)", DEFAULT_BLOCK_RECONSTRUCTION_EXTRA_TXN), false, OptionsCategory::OPTIONS); - gArgs.AddArg("-blocksonly", strprintf("Whether to operate in a blocks only mode (default: %u)", DEFAULT_BLOCKSONLY), true, OptionsCategory::OPTIONS); + gArgs.AddArg("-blocksonly", strprintf("Whether to reject transactions from network peers. Transactions from the wallet or RPC are not affected. (default: %u)", DEFAULT_BLOCKSONLY), false, OptionsCategory::OPTIONS); gArgs.AddArg("-conf=", strprintf("Specify configuration file. Relative paths will be prefixed by datadir location. (default: %s)", BITCOIN_CONF_FILENAME), false, OptionsCategory::OPTIONS); gArgs.AddArg("-datadir=", "Specify data directory", false, OptionsCategory::OPTIONS); gArgs.AddArg("-dbbatchsize", strprintf("Maximum database write batch size in bytes (default: %u)", nDefaultDbBatchSize), true, OptionsCategory::OPTIONS);