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Honor --max-peers if --min-peers is not specified (#8087)

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* Change interpretation min and max peers

* Only min specified -> Set min to that value and max to default
* Only max specified -> Set min and max to that value
* Both specified -> Set min the smallest value and max to the largest value

* simplify logic, new ParseError & add tests

* simplify code according to the review comments

* address review comments

* more fine-grained tests
This commit is contained in:
Niklas Adolfsson
2018-04-03 16:51:57 +02:00
committed by Rando
parent dcaff6f4c8
commit 0a535bf485
3 changed files with 92 additions and 8 deletions
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22
parity/cli/mod.rs
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@@ -409,11 +409,11 @@ usage! {
"--port=[PORT]",
"Override the port on which the node should listen.",
ARG arg_min_peers: (u16) = 25u16, or |c: &Config| c.network.as_ref()?.min_peers.clone(),
ARG arg_min_peers: (Option<u16>) = None, or |c: &Config| c.network.as_ref()?.min_peers.clone(),
"--min-peers=[NUM]",
"Try to maintain at least NUM peers.",
ARG arg_max_peers: (u16) = 50u16, or |c: &Config| c.network.as_ref()?.max_peers.clone(),
ARG arg_max_peers: (Option<u16>) = None, or |c: &Config| c.network.as_ref()?.max_peers.clone(),
"--max-peers=[NUM]",
"Allow up to NUM peers.",
@@ -1504,8 +1504,8 @@ mod tests {
// -- Networking Options
flag_no_warp: false,
arg_port: 30303u16,
arg_min_peers: 25u16,
arg_max_peers: 50u16,
arg_min_peers: Some(25u16),
arg_max_peers: Some(50u16),
arg_max_pending_peers: 64u16,
arg_snapshot_peers: 0u16,
arg_allow_ips: "all".into(),
@@ -1896,4 +1896,18 @@ mod tests {
stratum: None,
});
}
#[test]
fn should_not_accept_min_peers_bigger_than_max_peers() {
match Args::parse(&["parity", "--max-peers=39", "--min-peers=40"]) {
Err(ArgsError::PeerConfiguration) => (),
_ => assert_eq!(false, true),
}
}
#[test]
fn should_accept_max_peers_equal_or_bigger_than_min_peers() {
Args::parse(&["parity", "--max-peers=40", "--min-peers=40"]).unwrap();
Args::parse(&["parity", "--max-peers=100", "--min-peers=40"]).unwrap();
}
}