client.Do错误获取状态码[关闭]

Question

When I call client.Do method, how would I be notified for errors like 429 response code (aka too many requests). Should I expect to get a response object back with a status code 429 or will I get an error with just the message “too many requests”?

I am seeing the latter and what I need is to be able to get status code for all errors (server/dial/tcp/dns/etc.) and successes and only in some cases I can get the actual code in case of errors. Is there anyway to get all response codes irrespective of the error type - the error message seems to reflect the details but would still like to get the code if possible.

Answer 1

The http documentation covers this very clearly.

Of particular interest are the documentation for Do:

An error is returned if caused by client policy (such as CheckRedirect), or failure to speak HTTP (such as a network connectivity problem). A non-2xx status code doesn't cause an error.

(Emphasis added)

And the documentation for the Response object returned by Do:

type Response struct {
    Status     string // e.g. "200 OK"
    StatusCode int    // e.g. 200