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3cb8293ba5
fa8ced32a60dea37ac169241cf9a1f708ef46c4b doc: Mention blocksonly in reduce-traffic.md, unhide option (MarcoFalke)
fa320de79faaca2b088fcbe7f76701faa9bff236 test: Add test for p2p_blocksonly (MarcoFalke)
fa3872e7b4540857261aed948b94b6b2bfdbc3d1 test: Format predicate source as multiline on error (MarcoFalke)
fa1dce7329d3e74d46ab98b93772b1832a3f1819 net: Rename ::fRelayTxes to ::g_relay_txes (MarcoFalke)
Pull request description:
This is de-facto no longer hidden
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Tree-SHA512: 474fbdee6cbd035ed9068a066b6056c1f909ec7520be0417820fcd1672ab3069b53f55c5147968978d9258fd3a3933fe1a9ef8e4f6e14fb6ebbd79701a0a1245
51 lines
2.0 KiB
Markdown
51 lines
2.0 KiB
Markdown
Reduce Traffic
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==============
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Some node operators need to deal with bandwidth caps imposed by their ISPs.
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By default, Dash Core allows up to 125 connections to different peers, 8 of
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which are outbound. You can therefore, have at most 117 inbound connections.
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The default settings can result in relatively significant traffic consumption.
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Ways to reduce traffic:
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## 1. Use `-maxuploadtarget=<MiB per day>`
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A major component of the traffic is caused by serving historic blocks to other nodes
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during the initial blocks download phase (syncing up a new node).
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This option can be specified in MiB per day and is turned off by default.
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This is *not* a hard limit; only a threshold to minimize the outbound
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traffic. When the limit is about to be reached, the uploaded data is cut by no
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longer serving historic blocks (blocks older than one week).
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Keep in mind that new nodes require other nodes that are willing to serve
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historic blocks.
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Whitelisted peers will never be disconnected, although their traffic counts for
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calculating the target.
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## 2. Disable "listening" (`-listen=0`)
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Disabling listening will result in fewer nodes connected (remember the maximum of 8
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outbound peers). Fewer nodes will result in less traffic usage as you are relaying
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blocks and transactions to fewer nodes.
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## 3. Reduce maximum connections (`-maxconnections=<num>`)
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Reducing the maximum connected nodes to a minimum could be desirable if traffic
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limits are tiny. Keep in mind that dash's trustless model works best if you are
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connected to a handful of nodes.
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## 4. Turn off transaction relay (`-blocksonly`)
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Forwarding transactions to peers increases the P2P traffic. To only sync blocks
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with other peers, you can disable transaction relay.
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Be reminded of the effects of this setting.
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- Fee estimation will no longer work.
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- Not relaying other's transactions could hurt your privacy if used while a
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wallet is loaded or if you use the node to broadcast transactions.
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- It makes block propagation slower because compact block relay can only be
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used when transaction relay is enabled.
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