openai/codex · error · anyhow::Error

host is empty

Error message

host is empty

What it means

Error "host is empty" thrown in openai/codex.

Source

Thrown at codex-rs/network-proxy/src/policy.rs:23

use anyhow::bail;
use anyhow::ensure;
use globset::GlobBuilder;
use globset::GlobSet;
use globset::GlobSetBuilder;
use std::collections::HashSet;
use std::net::IpAddr;
use std::net::Ipv4Addr;
use std::net::Ipv6Addr;
use url::Host as UrlHost;

/// A normalized host string for policy evaluation.
#[derive(Clone, Debug, PartialEq, Eq, Hash)]
pub struct Host(String);

impl Host {
    pub fn parse(input: &str) -> Result<Self> {
        let normalized = normalize_host(input);
        ensure!(!normalized.is_empty(), "host is empty");
        Ok(Self(normalized))
    }

    pub fn as_str(&self) -> &str {
        &self.0
    }
}

/// Returns true if the host is a loopback hostname or IP literal.
pub fn is_loopback_host(host: &Host) -> bool {
    let host = host.as_str();
    let host = unscoped_ip_literal(host).unwrap_or(host);
    if host == "localhost" {
        return true;
    }
    if let Ok(ip) = host.parse::<IpAddr>() {
        return ip.is_loopback();
    }

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/network-proxy/src/policy.rs:23 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/9bcf8032b35535a9. Report an issue: GitHub.