43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
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package transport
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import (
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"context"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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)
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func (t *transport) DereferenceMedia(c context.Context, iri *url.URL, expectedContentType string) ([]byte, error) {
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l := t.log.WithField("func", "DereferenceMedia")
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l.Debugf("performing GET to %s", iri.String())
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req, err := http.NewRequest("GET", iri.String(), nil)
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if err != nil {
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return nil, err
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}
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req = req.WithContext(c)
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if expectedContentType == "" {
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req.Header.Add("Accept", "*/*")
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} else {
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req.Header.Add("Accept", expectedContentType)
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}
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req.Header.Add("Date", t.clock.Now().UTC().Format("Mon, 02 Jan 2006 15:04:05")+" GMT")
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req.Header.Add("User-Agent", fmt.Sprintf("%s %s", t.appAgent, t.gofedAgent))
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req.Header.Set("Host", iri.Host)
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t.getSignerMu.Lock()
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err = t.getSigner.SignRequest(t.privkey, t.pubKeyID, req, nil)
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t.getSignerMu.Unlock()
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if err != nil {
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return nil, err
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}
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resp, err := t.client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("GET request to %s failed (%d): %s", iri.String(), resp.StatusCode, resp.Status)
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}
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return ioutil.ReadAll(resp.Body)
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}
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