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return 304 from TransformingTransport

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If the caching headers in the request are valid, return a 304 response
instead of doing the transformation.

Ref #92
This commit is contained in:
Will Norris 2017-06-14 20:04:41 -04:00
parent a7a04ebe7b
commit d64b0f81c9
1 changed files with 5 additions and 0 deletions
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5
imageproxy.go
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@ -294,6 +294,11 @@ func (t *TransformingTransport) RoundTrip(req *http.Request) (*http.Response, er
return nil, err return nil, err
} }
if should304(req, resp) {
// bare 304 response, full response will be used from cache
return &http.Response{StatusCode: http.StatusNotModified}, nil
}
defer resp.Body.Close() defer resp.Body.Close()
b, err := ioutil.ReadAll(resp.Body) b, err := ioutil.ReadAll(resp.Body)
if err != nil { if err != nil {