diff --git a/ratiospoof/ratiospoof.go b/ratiospoof/ratiospoof.go
index 7f804db..37c8e15 100644
--- a/ratiospoof/ratiospoof.go
+++ b/ratiospoof/ratiospoof.go
@@ -10,9 +10,9 @@ import (
 	"math"
 	"math/rand"
 	"net/http"
-	"net/url"
 	"os"
 	"os/signal"
+	"regexp"
 	"strconv"
 	"strings"
 	"sync"
@@ -367,8 +367,8 @@ func (R *ratioSpoofState) changeCurrentTimer(newAnnounceRate int) {
 }
 
 func (R *ratioSpoofState) tryMakeRequest(query string) *trackerResponse {
-	for idx, url := range R.torrentInfo.trackerInfo.urls {
-		completeURL := url + "?" + strings.TrimLeft(query, "?")
+	for idx, baseUrl := range R.torrentInfo.trackerInfo.urls {
+		completeURL := buildFullUrl(baseUrl, query)
 		R.lastAnounceRequest = completeURL
 		req, _ := http.NewRequest("GET", completeURL, nil)
 		for header, value := range R.bitTorrentClient.Headers() {
@@ -402,6 +402,13 @@ func (R *ratioSpoofState) tryMakeRequest(query string) *trackerResponse {
 
 }
 
+func buildFullUrl(baseurl, query string) string {
+	if len(strings.Split(baseurl, "?")) > 1 {
+		return baseurl + "&" + strings.TrimLeft(query, "&")
+	}
+	return baseurl + "?" + strings.TrimLeft(query, "?")
+}
+
 func calculateNextTotalSizeByte(speedBytePerSecond, currentByte, pieceSizeByte, seconds, limitTotalBytes int) int {
 	if speedBytePerSecond == 0 {
 		return currentByte
@@ -421,7 +428,16 @@ func extractInfoHashURLEncoded(rawData []byte, torrentData map[string]interface{
 	h := sha1.New()
 	h.Write([]byte(rawData[byteOffsets[0]:byteOffsets[1]]))
 	ret := h.Sum(nil)
-	return url.QueryEscape(string(ret))
+	var buf bytes.Buffer
+	re := regexp.MustCompile(`[a-zA-Z0-9\.\-\_\~]`)
+	for _, b := range ret {
+		if re.Match([]byte{b}) {
+			buf.WriteByte(b)
+		} else {
+			buf.WriteString(fmt.Sprintf("%%%02x", b))
+		}
+	}
+	return buf.String()
 
 }
 func extractTotalSize(torrentData map[string]interface{}) int {
diff --git a/ratiospoof/ratiospoof_test.go b/ratiospoof/ratiospoof_test.go
index 461182a..2db0e0a 100644
--- a/ratiospoof/ratiospoof_test.go
+++ b/ratiospoof/ratiospoof_test.go
@@ -8,7 +8,7 @@ import (
 func assertAreEqual(t *testing.T, got, want interface{}) {
 	t.Helper()
 	if got != want {
-		t.Errorf("\ngot: %v\n want: %v", got, want)
+		t.Errorf("\ngot : %v\nwant: %v", got, want)
 	}
 }
 
@@ -55,3 +55,11 @@ func TestClculateNextTotalSizeByte(T *testing.T) {
 // 	want := "%60N%7d%1f%8b%3a%9bT%d5%fc%ad%d1%27%ab5%02%1c%fb%03%b0"
 // 	assertAreEqual(T, got, want)
 // }
+
+// func TestUrlEncodeInfoHash2(T *testing.T) {
+
+// 	b, _ := ioutil.ReadFile("")
+// 	got := extractInfoHashURLEncoded(b, beencode.Decode(b))
+// 	want := "%02r%fd%fe%bf%fbt%d0%0f%cf%d9%8c%e0%a9%97%f8%08%9b%00%b2"
+// 	assertAreEqual(T, got, want)
+// }