Auth Interceptor

[lbensaad]

I want to intercept every response and if the http status is 401 I have to authenticate first then resend the request.
My problem is that I did not know how to check for the 401 response status:
this is the interceptor from documentation:

const logger: Interceptor = (next) => async (req) => {
  console.log(`sending message to ${req.url}`);
  const res = await next(req);
  if (!res.stream) {
    console.log("message:", res.message);
  }
  return res;
};

[lbensaad]

I solved it with this interceptor

export const auth: Interceptor = (next) => async (req) => {    
    try {
        return await next(req);
    } catch (error) {
        if(error instanceof ConnectError){
            if(error.code === Code.Unauthenticated){
                await refreshToken()
                return  await next(req);
            }    
        }
        throw error
    }
};

But the connect-go server has to return the error with:
connect.NewError(connect.CodeUnauthenticated, err)