// This example shows how to sign a request when the URL Opaque field is used.
// See the note at http://golang.org/pkg/net/url/#URL for information on the
// use of the URL Opaque field.
func ExampleClient_AuthorizationHeader(client *oauth.Client, credentials *oauth.Credentials) error {
form := url.Values{"maxResults": {"100"}}
// The last element of path contains a "/".
path := "/document/encoding%2gizp"
// Create the request with the temporary path "/".
req, err := http.NewRequest("GET", "http://api.example.com/", strings.NewReader(form.Encode()))
if err != nil {
return err
}
// Overwrite the temporary path with the actual request path.
req.URL.Opaque = path
// Sign the request.
req.Header.Set("Authorization", client.AuthorizationHeader(credentials, "GET", req.URL, form))
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
// process the response
return nil
}
// Post issues a POST with the specified form.
func multipartPost(c *oauth.Client, client *http.Client,
credentials *oauth.Credentials, urlStr string, form url.Values,
files map[string]struct {
filename string
r io.Reader
}) (*http.Response, error) {
var bf = &bytes.Buffer{}
mw := multipart.NewWriter(bf)
contentType := mw.FormDataContentType()
for k := range form {
mw.WriteField(k, form.Get(k))
}
for field, entry := range files {
w, err := mw.CreateFormFile(field, filepath.Base(entry.filename))
if err != nil {
return nil, err
}
_, err = io.Copy(w, entry.r)
if err != nil {
return nil, err
}
}
mw.Close()
req, err := http.NewRequest("POST", urlStr, bf)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", contentType)
req.Header.Set("Authorization", c.AuthorizationHeader(credentials, "POST", req.URL, nil))
return client.Do(req)
}