Passing arguments to the Importer or Exporter Extension

• Transcoders (objects that implement an importer or exporter interface) may be passed arguments in a dictionary object. For instance, FiddlerScript can invoke the HTTPArchive transcoder, passing in the filename string and maximum response size integers as follows:

  var oSessions = FiddlerApplication.UI.GetAllSessions();
  var oExportOptions = FiddlerObject.createDictionary();
  oExportOptions.Add("Filename", "C:\\users\\ericlaw\\desktop\\out1.har");
  oExportOptions.Add("MaxTextBodyLength", 1024);
  oExportOptions.Add("MaxBinaryBodyLength", 16384);
  FiddlerApplication.DoExport("HTTPArchive v1.2", oSessions, oExportOptions, null);
  

• A transcoder extension may collect these options as follows:

  public bool ExportSessions(string sFormat, Session[] oSessions, 
      Dictionary<string, object> dictOptions, EventHandler<ProgressCallbackEventArgs> evtProgressNotifications)
  {
  
  //...
  
    if (null != dictOptions)
    { 
      if (dictOptions.ContainsKey("Filename"))
      {
      sFilename = dictOptions["Filename"] as string;
      }
  
      if (dictOptions.ContainsKey("MaxTextBodyLength"))
      {
        iMaxTextBodyLength = (int)dictOptions["MaxTextBodyLength"];
      }
  
      if (dictOptions.ContainsKey("MaxBinaryBodyLength"))
      {
         iMaxBinaryBodyLength = (int)dictOptions["MaxBinaryBodyLength"];
      }
    }