Issues with replyAsBinary() method in jadeHTMLClass

[timmeh]

Hi,

I've been trying to get this method to work for me but keep running into the same weird issue.

I follow the documentation and re-implement generateHTMLString(), add the code to convert a file to binary, when I click a link to download the file
it works, downloads first time. Then after the first response all other requests receive no response, the server stops replying until i restart the application although
no exceptions are logged.

Below is the code:

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generateHTMLString(): String updating; vars downloadFile : File; message : Binary; header : String; begin //checks if the request should initiate file download if getHttpValue("downloadFile") = "file" then create downloadFile transient; downloadFile.fileName := 'c:/test/test.pdf'; downloadFile.kind := downloadFile.Kind_Binary; downloadFile.mode := File.Mode_Input; downloadFile.open; message := downloadFile.readBinary(downloadFile.fileLength); downloadFile.close; header := 'HTTP/1.1 200 OK' & CrLf & 'Content-Type: ' & 'application/pdf' & CrLf & downloadFile.fileName & CrLf & 'Content-Disposition: attachment;filename=' & downloadFile.fileName & CrLf & 'Content-Length: ' & message.length.String & CrLf & CrLf; return replyAsBinary(header,message); endif; epilog delete downloadFile; end;

if I change

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return replyAsBinary(header,message);

to

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return header & message.String;

The file downloads, yet when I open it its corrupt, although the webserver still works and I can still navigate throughout the website.
(I read in the documentation that the header is UTF8 and the binary isnt? Not sure if this has some effect)

Any suggestions would be greatly appreciated, this has got me really stuck!

[kpd]

Timmeh,

We have recently experienced problems with using replyAsBinary as well, that are related to the IIS version we are running with. The recommended header code that you are using is fine when using IIS 6, but if you are running with IIS 7 or 7.5, then you need to remove the HTTP/1.1 line from the header string. i.e. change your code to

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header := 'Content-Type: ' & 'application/pdf' & CrLf & downloadFile.fileName & CrLf & 'Content-Disposition: attachment;filename=' & downloadFile.fileName & CrLf & 'Content-Length: ' & message.length.String & CrLf & CrLf;

and it will work regardless of the IIS version.

Cheers,
Kevin Douglas

[timmeh]

Thanks! That was really helpful for a recent upgrade, my original issue was i didnt reimplement some of the other classes replyAsBinary required

[M45HY]

Hi Everyone,

I've come across the same problem that timmeh was initialling coming across and I'm unable to fix it. I believe the problem is where the system is using the replyAsBinary method. At the moment, when I use replyAsBinary, it makes a file downloadable but then the browser stops responding (we are using JADE generated HTML but will be moving to Web Services but for the short term, we still need to get this working for existing clients).

Once the Windows dialog box appears/closes (Open/Save/Close) the user has to refresh the web page (F5) and then the system starts to respond. I was wondering whether someone could tell me how to reimplement the replyAsBinary method, just in case that's the solution or whether there is another method I could use instead of replyAsBinary?

Thanks,
Omash