openai/codex · error · io::Error

AddrInUse

AddrInUse

Error message

Unable to determine the server port

What it means

Error "Unable to determine the server port" thrown in openai/codex.

Source

Thrown at codex-rs/login/src/server.rs:168

}

impl ShutdownHandle {
    /// Signals the login loop to terminate.
    pub fn shutdown(&self) {
        self.shutdown_notify.notify_one();
    }
}

/// Starts a local callback server and returns the browser auth URL.
pub fn run_login_server(opts: ServerOptions) -> io::Result<LoginServer> {
    let pkce = generate_pkce();
    let state = opts.force_state.clone().unwrap_or_else(generate_state);

    let server = bind_server(opts.port)?;
    let actual_port = match server.server_addr().to_ip() {
        Some(addr) => addr.port(),
        None => {
            return Err(io::Error::new(
                io::ErrorKind::AddrInUse,
                "Unable to determine the server port",
            ));
        }
    };
    let server = Arc::new(server);

    let redirect_uri = format!("http://localhost:{actual_port}/auth/callback");
    let auth_url = build_authorize_url(
        &opts.issuer,
        &opts.client_id,
        &redirect_uri,
        &pkce,
        &state,
        opts.forced_chatgpt_workspace_id.as_deref(),
    );

    if opts.open_browser {

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/login/src/server.rs:168 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/27d708390fd19207. Report an issue: GitHub.