openai/codex · error · io::Error

NotFound

NotFound

Error message

accepted connection is absent from the IPv4 TCP owner table

What it means

Error "accepted connection is absent from the IPv4 TCP owner table" thrown in openai/codex.

Source

Thrown at codex-rs/network-proxy/src/windows_tcp_attribution.rs:146

            .cast::<u8>()
            .add(rows_offset)
            .cast::<MIB_TCPROW_OWNER_PID>();
        std::slice::from_raw_parts(rows_ptr, row_count)
    };
    Ok(rows)
}

fn unique_client_process_id(
    rows: &[MIB_TCPROW_OWNER_PID],
    accepted_local_addr: SocketAddrV4,
    accepted_peer_addr: SocketAddrV4,
) -> io::Result<u32> {
    let mut matching_process_ids = rows
        .iter()
        .filter(|row| client_row_matches(row, accepted_local_addr, accepted_peer_addr))
        .map(|row| row.dwOwningPid);
    let process_id = matching_process_ids.next().ok_or_else(|| {
        io::Error::new(
            io::ErrorKind::NotFound,
            "accepted connection is absent from the IPv4 TCP owner table",
        )
    })?;
    if matching_process_ids.next().is_some() {
        return Err(io::Error::new(
            io::ErrorKind::InvalidData,
            "accepted connection has multiple IPv4 TCP owner rows",
        ));
    }
    Ok(process_id)
}

fn client_row_matches(
    row: &MIB_TCPROW_OWNER_PID,
    accepted_local_addr: SocketAddrV4,
    accepted_peer_addr: SocketAddrV4,
) -> bool {

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/network-proxy/src/windows_tcp_attribution.rs:146 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/2cfc0e108d1b1992. Report an issue: GitHub.