Function deserialize_port_range

gateway/src/config.rs:71–102

Deserialize a port range from either a single integer (443) or a string range ("443-543").

(deserializer: D)

/// Deserialize a port range from either a single integer (443) or a string range ("443-543").
fn deserialize_port_range<'de, D>(deserializer: D) -> std::result::Result<Vec<u16>, D::Error>
where
    D: serde::Deserializer<'de>,
{
    use serde::de;

    #[derive(Deserialize)]
    #[serde(untagged)]
    enum PortSpec {
        Single(u16),
        Range(String),
    }

    match PortSpec::deserialize(deserializer)? {
        PortSpec::Single(p) => Ok(vec![p]),
        PortSpec::Range(s) => {
            if let Some((start, end)) = s.split_once('-') {
                let start: u16 = start.trim().parse().map_err(de::Error::custom)?;
                let end: u16 = end.trim().parse().map_err(de::Error::custom)?;
                if start > end {
                    return Err(de::Error::custom(format!(
                        "invalid port range: {start} > {end}"
                    )));
                }
                Ok((start..=end).collect())
            } else {
                let p: u16 = s.trim().parse().map_err(de::Error::custom)?;
                Ok(vec![p])
            }
        }
    }
}

#[derive(Debug, Clone, Deserialize)]
pub struct ProxyConfig {