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Merge #15990: Add tests and documentation for blocksonly

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fa8ced32a6 doc: Mention blocksonly in reduce-traffic.md, unhide option (MarcoFalke)
fa320de79f test: Add test for p2p_blocksonly (MarcoFalke)
fa3872e7b4 test: Format predicate source as multiline on error (MarcoFalke)
fa1dce7329 net: Rename ::fRelayTxes to ::g_relay_txes (MarcoFalke)

Pull request description:

  This is de-facto no longer hidden

ACKs for commit fa8ced:
  jamesob:
    utACK fa8ced32a6

Tree-SHA512: 474fbdee6cbd035ed9068a066b6056c1f909ec7520be0417820fcd1672ab3069b53f55c5147968978d9258fd3a3933fe1a9ef8e4f6e14fb6ebbd79701a0a1245
This commit is contained in:
Wladimir J. van der Laan
2019-05-16 18:44:54 +02:00
parent 1c719f78d3 fa8ced32a6
commit df7addc4c6
10 changed files with 89 additions and 9 deletions
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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.