fixed issue of download log option giving truncated file with fixed 2mb limit by making the limit option configurable.

DnsServerCore/DnsWebService.cs

@@ -405,7 +405,12 @@ namespace DnsServerCore
                     string logFileName = pathParts[2];
                     string logFile = Path.Combine(_log.LogFolder, logFileName + ".log");
 
-                    LogManager.DownloadLog(response, logFile, 2 * 1024 * 1024);
+                    int limit = 0;
+                    string strLimit = request.QueryString["limit"];
+                    if (!string.IsNullOrEmpty(strLimit))
+                        limit = int.Parse(strLimit);
+
+                    LogManager.DownloadLog(response, logFile, limit * 1024 * 1024);
                 }
                 else
                 {

DnsServerCore/LogManager.cs

@@ -34,7 +34,7 @@ namespace DnsServerCore
         string _logFile;
         StreamWriter _logOut;
         DateTime _logDate;
-        
+
         readonly object _logFileLock = new object();
 
         #endregion
@@ -117,7 +117,7 @@ namespace DnsServerCore
                 response.ContentType = "text/plain";
                 response.AddHeader("Content-Disposition", "attachment;filename=" + Path.GetFileName(logFile));
 
-                if (limit > fS.Length)
+                if ((limit > fS.Length) || (limit < 1))
                     limit = fS.Length;
 
                 OffsetStream oFS = new OffsetStream(fS, 0, limit);

DnsServerCore/www/js/main.js

@@ -2651,7 +2651,7 @@ function viewLog(logFile) {
     divLogViewer.show();
 
     HTTPGetFileRequest({
-        url: "/log/" + logFile + "?token=" + token,
+        url: "/log/" + logFile + "?limit=2&token=" + token,
         success: function (response) {
 
             divLogViewerLoader.hide();