try to fix some long delays with the crawler

scripts/crawler.go

@@ -48,12 +48,17 @@ func doRequest(request map[string]interface{}) map[string]interface{} {
 			panic(err)
 		}
 		bs := make([]byte, 65535)
+		deadline := time.Now().Add(6 * time.Second)
+		sock.SetReadDeadline(deadline)
 		n, err := sock.Read(bs)
+		sock.Close()
 		if err != nil {
+			continue
 			panic(bs)
 		}
 		bs = bs[:n]
 		if err = json.Unmarshal(bs, &res); err != nil {
+			return nil
 			panic(err)
 		}
 		// TODO parse res, check if there's an error

scripts/ratio.py

@@ -36,6 +36,8 @@ for kdx in xrange(len(kinds)):
     axs[kdx].set_title("ratio (dht/peers)")
   axs[kdx].hist(bins, bins=nbins)
 plt.savefig("fig.svg")
+plt.yscale('log')
+plt.savefig("fig-logy.svg")
 
 print results