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Allow configuration of max transmission unit

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This commit is contained in:
Tilo Spannagel 2021-12-20 17:03:44 +00:00 • committed by GitHub
parent 81264916e5
commit 23af49dde5
3 changed files with 20 additions and 4 deletions
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16
src/config.rs
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@ -17,6 +17,7 @@ pub struct Config {
pub(crate) endpoint_addr: SocketAddr,
pub(crate) source_peer_ip: IpAddr,
pub(crate) keepalive_seconds: Option<u16>,
pub(crate) max_transmission_unit: usize,
pub(crate) log: String,
pub(crate) warnings: Vec<String>,
}
@ -82,6 +83,13 @@ impl Config {
.long("keep-alive")
.env("ONETUN_KEEP_ALIVE")
.help("Configures a persistent keep-alive for the WireGuard tunnel, in seconds."),
Arg::with_name("max-transmission-unit")
.required(false)
.takes_value(true)
.long("max-transmission-unit")
.env("ONETUN_MTU")
.default_value("1420")
.help("Configures the max-transmission-unit (MTU) of the WireGuard tunnel."),
Arg::with_name("log")
.required(false)
.takes_value(true)
@ -163,6 +171,8 @@ impl Config {
.with_context(|| "Invalid source peer IP")?,
keepalive_seconds: parse_keep_alive(matches.value_of("keep-alive"))
.with_context(|| "Invalid keep-alive value")?,
max_transmission_unit: parse_mtu(matches.value_of("max-transmission-unit"))
.with_context(|| "Invalid max-transmission-unit value")?,
log: matches.value_of("log").unwrap_or_default().into(),
warnings,
})
@ -209,6 +219,12 @@ fn parse_keep_alive(s: Option<&str>) -> anyhow::Result<Option<u16>> {
}
}
fn parse_mtu(s: Option<&str>) -> anyhow::Result<usize> {
s.with_context(|| "Missing MTU")?
.parse()
.with_context(|| "Invalid MTU")
}
#[cfg(unix)]
fn is_file_insecurely_readable(path: &str) -> Option<(bool, bool)> {
use std::fs::File;