+package httpTracker
+
+import (
+ "context"
+ "log"
+ "net/http"
+ "net/url"
+
+ "github.com/anacrolix/torrent/bencode"
+ "github.com/anacrolix/torrent/tracker/udp"
+ "github.com/anacrolix/torrent/types/infohash"
+)
+
+type scrapeResponse struct {
+ Files files `bencode:"files"`
+}
+
+// Bencode should support bencode.Unmarshalers from a string in the dict key position.
+type files = map[string]udp.ScrapeInfohashResult
+
+func (cl Client) Scrape(ctx context.Context, ihs []infohash.T) (out udp.ScrapeResponse, err error) {
+ _url := cl.url_.JoinPath("..", "scrape")
+ query, err := url.ParseQuery(_url.RawQuery)
+ if err != nil {
+ return
+ }
+ for _, ih := range ihs {
+ query.Add("info_hash", ih.AsString())
+ }
+ _url.RawQuery = query.Encode()
+ log.Printf("%q", _url.String())
+ req, err := http.NewRequestWithContext(ctx, http.MethodGet, _url.String(), nil)
+ if err != nil {
+ return
+ }
+ resp, err := cl.hc.Do(req)
+ if err != nil {
+ return
+ }
+ defer resp.Body.Close()
+ var decodedResp scrapeResponse
+ err = bencode.NewDecoder(resp.Body).Decode(&decodedResp)
+ for _, ih := range ihs {
+ out = append(out, decodedResp.Files[ih.AsString()])
+ }
+ return
+}