ReceiveHeadError

    pub const ReceiveHeadError = http.Reader.HeadError || ConnectError || error{
        /// Server sent headers that did not conform to the HTTP protocol.
        ///
        /// To find out more detailed diagnostics, `http.Reader.head_buffer` can be
        /// passed directly to `Request.Head.parse`.
        HttpHeadersInvalid,
        TooManyHttpRedirects,
        /// This can be avoided by calling `receiveHead` before sending the
        /// request body.
        RedirectRequiresResend,
        HttpRedirectLocationMissing,
        HttpRedirectLocationOversize,
        HttpRedirectLocationInvalid,
        HttpContentEncodingUnsupported,
        HttpChunkInvalid,
        HttpChunkTruncated,
        HttpHeadersOversize,
        UnsupportedUriScheme,

        /// Sending the request failed. Error code can be found on the
        /// `Connection` object.
        WriteFailed,
    }