+
+func (this KeepClient) Get(hash string) (reader io.ReadCloser,
+ contentLength int64, url string, err error) {
+ return this.AuthorizedGet(hash, "", "")
+}
+
+func (this KeepClient) AuthorizedGet(hash string,
+ signature string,
+ timestamp string) (reader io.ReadCloser,
+ contentLength int64, url string, err error) {
+
+ // Calculate the ordering for asking servers
+ sv := this.ShuffledServiceRoots(hash)
+
+ for _, host := range sv {
+ var req *http.Request
+ var err error
+ var url string
+ if signature != "" {
+ url = fmt.Sprintf("%s/%s+A%s@%s", host, hash,
+ signature, timestamp)
+ } else {
+ url = fmt.Sprintf("%s/%s", host, hash)
+ }
+ if req, err = http.NewRequest("GET", url, nil); err != nil {
+ continue
+ }
+
+ req.Header.Add("Authorization", fmt.Sprintf("OAuth2 %s", this.ApiToken))
+
+ var resp *http.Response
+ if resp, err = this.Client.Do(req); err != nil {
+ continue
+ }
+
+ if resp.StatusCode == http.StatusOK {
+ return resp.Body, resp.ContentLength, url, nil
+ }
+ }
+
+ return nil, 0, "", BlockNotFound
+}
+
+func (this KeepClient) Ask(hash string) (contentLength int64, url string, err error) {
+ return this.AuthorizedAsk(hash, "", "")
+}
+
+func (this KeepClient) AuthorizedAsk(hash string, signature string,
+ timestamp string) (contentLength int64, url string, err error) {
+ // Calculate the ordering for asking servers
+ sv := this.ShuffledServiceRoots(hash)
+
+ for _, host := range sv {
+ var req *http.Request
+ var err error
+ if signature != "" {
+ url = fmt.Sprintf("%s/%s+A%s@%s", host, hash,
+ signature, timestamp)
+ } else {
+ url = fmt.Sprintf("%s/%s", host, hash)
+ }
+
+ if req, err = http.NewRequest("HEAD", url, nil); err != nil {
+ continue
+ }
+
+ req.Header.Add("Authorization", fmt.Sprintf("OAuth2 %s", this.ApiToken))
+
+ var resp *http.Response
+ if resp, err = this.Client.Do(req); err != nil {
+ continue
+ }
+
+ if resp.StatusCode == http.StatusOK {
+ return resp.ContentLength, url, nil
+ }
+ }
+
+ return 0, "", BlockNotFound
+
+}