diff --git a/internal/tun2/connection.go b/internal/tun2/connection.go
index ae2d646..9db2195 100644
--- a/internal/tun2/connection.go
+++ b/internal/tun2/connection.go
@@ -2,7 +2,9 @@ package tun2
 
 import (
 	"bufio"
+	"bytes"
 	"context"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"time"
@@ -138,6 +140,15 @@ func (c *Connection) RoundTrip(req *http.Request) (*http.Response, error) {
 	if err != nil {
 		return nil, errors.Wrap(err, ErrCantReadResponse.Error())
 	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, errors.Wrap(err, "can't read response body")
+	}
+
+	resp.Body = ioutil.NopCloser(bytes.NewBuffer(body))
+	resp.ContentLength = int64(len(body))
 
 	return resp, nil
 }