diff --git a/lib/server/socket.js b/lib/server/socket.js
index cbfb63fe..323a6808 100644
--- a/lib/server/socket.js
+++ b/lib/server/socket.js
@@ -59,28 +59,13 @@ function getExec(error, stdout, stderr) {
 }
 
 
-/**
- * Windows-1251 to Unicode converter
- * Useful when having to use GET query parameters.
- * e.g. unescaped "%F2%E5%EA%F1%F2", "òåêñò" becomes "текст"
- * Source: http://xpoint.ru/know-how/JavaScript/PoleznyieFunktsii?38#PerekodirovkaIzWindows1251IKOI
- */
-function win2unicode(str) {
-   var charmap   = unescape(
-      "%u0402%u0403%u201A%u0453%u201E%u2026%u2020%u2021%u20AC%u2030%u0409%u2039%u040A%u040C%u040B%u040F" +
-      "%u0452%u2018%u2019%u201C%u201D%u2022%u2013%u2014%u0000%u2122%u0459%u203A%u045A%u045C%u045B%u045F" +
-      "%u00A0%u040E%u045E%u0408%u00A4%u0490%u00A6%u00A7%u0401%u00A9%u0404%u00AB%u00AC%u00AD%u00AE%u0407" +
-      "%u00B0%u00B1%u0406%u0456%u0491%u00B5%u00B6%u00B7%u0451%u2116%u0454%u00BB%u0458%u0405%u0455%u0457");
-     
-   var code2char = function(code) {
-               if(code >= 0xC0 && code <= 0xFF) return String.fromCharCode(code - 0xC0 + 0x0410);
-               if(code >= 0x80 && code <= 0xBF) return charmap.charAt(code - 0x80);
-               return String.fromCharCode(code);
-            };
-            
-   var res = "";
-   
-   for(var i = 0; i < str.length; i++) res = res + code2char(str.charCodeAt(i));
-   
-   return res;
-};
\ No newline at end of file
+// Windows code page 1251 Cyrillic
+var encodings = '\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\u0402\u0403\u201a\u0453\u201e\u2026\u2020\u2021\u20ac\u2030\u0409\u2039\u040a\u040c\u040b\u040f\u0452\u2018\u2019\u201c\u201d\u2022\u2013\u2014\ufffd\u2122\u0459\u203a\u045a\u045c\u045b\u045f\xa0\u040e\u045e\u0408\xa4\u0490\xa6\xa7\u0401\xa9\u0404\xab\xac\xad\xae\u0407\xb0\xb1\u0406\u0456\u0491\xb5\xb6\xb7\u0451\u2116\u0454\xbb\u0458\u0405\u0455\u0457\u0410\u0411\u0412\u0413\u0414\u0415\u0416\u0417\u0418\u0419\u041a\u041b\u041c\u041d\u041e\u041f\u0420\u0421\u0422\u0423\u0424\u0425\u0426\u0427\u0428\u0429\u042a\u042b\u042c\u042d\u042e\u042f\u0430\u0431\u0432\u0433\u0434\u0435\u0436\u0437\u0438\u0439\u043a\u043b\u043c\u043d\u043e\u043f\u0440\u0441\u0442\u0443\u0444\u0445\u0446\u0447\u0448\u0449\u044a\u044b\u044c\u044d\u044e\u044f';
+
+function win2unicode(bytes) {
+    var n= bytes.length;
+    var chars= new Array(n);
+    for (var i= 0; i<n; i++)
+        chars[i]= encodings.charAt(bytes.charCodeAt(i));
+    return chars.join('');
+}
\ No newline at end of file