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500 Error when uploading large files

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    #1

    500 Error when uploading large files

    Alpha Five/11.0 Build/3381-4096

    I have a file upload handler with the following simple test case code that is failing to save an uploaded file when the uploaded file is large.
    It seems the upload works but then file.from_blob is failing. If anyone has run into this issue before I would love to here how you resolved it.

    Some Info:
    My web application Maximum POST body size (MB) is set to 1024 which should be more than enough.

    file_upload.a5w
    Code:
    <form id="fileUploader" method="post" enctype="multipart/form-data" action="handlers/file_upload_handler.a5w">
	<input name="file" type="file" multiple="">
	<input type="submit" value="Submit"/>
</form>
    file_upload_handler.a5w
    Code:
    <%a5	
	dim fileData as P=Request.Variables.file
	dim file_ext as C=lastword(fileData.fileName,".")

	dim upload_dir as C="c:/temp/"
	dim fullfilename as C=api_uuidcreate()+"."+file_ext
	dim absolute_file_path as C=upload_dir+fullfilename

	file.from_blob(absolute_file_path,fileData.data)
	
	if file.exists(absolute_file_path) then
		?"Uploaded"
	else
		?"Failed to upload"
	end if
%>
    I am receiving a 500 Internal Server Error with an 'out of memory' error.
    I have also tried using file.append() and receive the same error
    Code:
    500 Internal Server Error
Script Error
Error:Script:" handlers/file_upload_handler.a5w" line:9
file.from_blob(absolute_file_path,fileData.data)
Out of memory
fileData.data subelement not found.
    Scott Moniz - Computer Programmer/Analyst
    REA Inc.
    http://reainc.net
    (416)-533-3777
    [email protected]

    REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
    If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
    contact us to discuss options.
    Tags: None
    #2
    Re: 500 Error when uploading large files

    You should be using Request.Variables.file.SaveToFile() instead of file.from_blob. This avoids the need to load the file contents in to memory.

    Lenny Forziati
    Vice President, Internet Products and Technical Services
    Alpha Software Corporation

    Comment

      #3
      Re: 500 Error when uploading large files

      Hi Lenny,
      Thank you so much for your response.

      I tried to look for this function in the documentation but was unable to find it. Could you possibly provide a reference?
      Is the method signature just Request.Variables.file.SaveToFile() or am I passing a path Request.Variables.file.SaveToFile(absolute_path)?

      Thanks in advance.
      Scott Moniz - Computer Programmer/Analyst
      REA Inc.
      http://reainc.net
      (416)-533-3777
      [email protected]

      REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
      If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
      contact us to discuss options.

      Comment

        #4
        Re: 500 Error when uploading large files

        Hi again Lenny,
        I looked through the documentation and the section on 'Uploading Files to the Web Application Server' uses file.from_blob - which is why I was using it.
        I have replaced it with: Request.Variables.file.SaveToFile(fullpath) and this seems to work.

        However, I am getting the following:
        413 Request Entity Too Large
        The data sent in the body of this request is too large. You must upload less data in a request.

        Alpha Five/11.0 Build/3381-4096

        My server's Maximum POST body size (MB) is set to 1800. Is there another setting I need to modify?

        Please let me know.
        Scott Moniz - Computer Programmer/Analyst
        REA Inc.
        http://reainc.net
        (416)-533-3777
        [email protected]

        REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
        If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
        contact us to discuss options.

        Comment

          #5
          Re: 500 Error when uploading large files

          The documentation is at http://www.alphasoftware.com/documen...e%20Method.xml, but it is still not complete.

          The first parameter is the destination file path.

          The optional second parameter is to append to an existing file. The default behavior is to overwrite an existing file.

          Here is a very basic example

          Code:
          <html>
<head><title>File Upload</title></head>
<body>
<%a5
if eval_valid("Request.Variables.File1")
	dim UniqueId			as c = time("0h0m0s3")

	dim FNUploadedFile		as c = "c:\windows\temp\\" + UniqueId + "_" + Request.Variables.File1.FileName
	Request.Variables.File1.SaveToFile(FNUploadedFile)
	Response.Write("Saved uploaded file as <b>" + FnUploadedFile + "</b><br/>")

else
	Response.Write("Form has not been submitted.<br/>")
end if
%>
<hr/>
<form action="<%a5?Request.ScriptName%>" method="post" enctype="multipart/form-data">
<input type="file" name="File1"/><br/>
<input type="submit" name="cmd" value="Upload File"/>
</form>

</body></html>

          Lenny Forziati
          Vice President, Internet Products and Technical Services
          Alpha Software Corporation

          Comment

            #6
            Re: 500 Error when uploading large files

            Hi Lenny,
            Thank you very much for your assistance and the sample.

            The 413 error mysteriously disappeared this morning - so I am good to go now.
            The Request.Variables.file.SaveToFile(absolute_path) does solve the out of memory issue I was experiencing.

            All of your V11/V12 Open Documentation... help files reference using file.from_blob when uploading in order to save the file to disk.
            Hopefully this post will save some future users some frustration.

            Thank you so much for your assistance!

            Additional Tags: out of memory, file upload out of memory, upload out of memory, file.from_blob out of memory
            Scott Moniz - Computer Programmer/Analyst
            REA Inc.
            http://reainc.net
            (416)-533-3777
            [email protected]

            REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
            If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
            contact us to discuss options.

            Comment

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