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doc: Mention blocksonly in reduce-traffic.md, unhide option

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MarcoFalke 2019-05-09 09:29:08 -04:00
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13
doc/reduce-traffic.md
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@ -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.

2
src/init.cpp
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@ -383,7 +383,7 @@ void SetupServerArgs()
gArgs.AddArg("-blocksdir=<dir>", "Specify blocks directory (default: <datadir>/blocks)", false, OptionsCategory::OPTIONS);
gArgs.AddArg("-blocknotify=<cmd>", "Execute command when the best block changes (%s in cmd is replaced by block hash)", false, OptionsCategory::OPTIONS);
gArgs.AddArg("-blockreconstructionextratxn=<n>", 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=<file>", strprintf("Specify configuration file. Relative paths will be prefixed by datadir location. (default: %s)", BITCOIN_CONF_FILENAME), false, OptionsCategory::OPTIONS);
gArgs.AddArg("-datadir=<dir>", "Specify data directory", false, OptionsCategory::OPTIONS);
gArgs.AddArg("-dbbatchsize", strprintf("Maximum database write batch size in bytes (default: %u)", nDefaultDbBatchSize), true, OptionsCategory::OPTIONS);