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413 Request Entity Too Large with IIS – Nginx

I am qute new web developer and I am facing a problem with uploading files to Azure file storage. From Angular I am sending a files into Flask backend and from there it is uploaded to Azure. My application is able to transfer small files but with bigger ones like couple of MB I am receiving following error.
error: "<html>rn<head><title>413 Request Entity Too Large</title></head>rn<body>rn<center><h1>413 Request Entity Too Large</h1></center>rn<hr><center>nginx</center>rn</body>rn</html>rn"
During my resarches I have found that it can be the problem with IIS. So I modified my web.config file to following

    <?xml version="1.0" encoding="utf-8"?>
     <configuration>
      <system.web>
       <httpRuntime maxRequestLength="500000" executionTimeout="120" />
      </system.web>
     <system.webServer>
       <security>
        <requestFiltering>
         <requestLimits maxAllowedContentLength="500000000"  />
        </requestFiltering>
       </security>  
        <rewrite>
    <rules>
      <rule name="Angular Routes" stopProcessing="true">
        <match url=".*" />
        <conditions logicalGrouping="MatchAll">
          <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
          <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
        </conditions>
        <action type="Rewrite" url="./index.html" />
      </rule>
    </rules>
   </rewrite>
   <staticContent>
      <mimeMap fileExtension=".json" mimeType="application/json" />
      <mimeMap fileExtension=".woff" mimeType="font/woff" />
      <mimeMap fileExtension=".woff2" mimeType="font/woff2" />
      <mimeMap fileExtension=".mp4" mimeType="video/mp4" />
  </staticContent>
</system.webServer>

</configuration>

But unfortunately it doesn’t help me. The strange thing is that I am not using nginx but in the error message there is <center>nginx</center> and I have no idea why nginx is mentioned there.
I have also found that there is something like HTTP binding but I am not sure which I have and I don’t how to check it. Does someone have any idea what can be wrong with my application? Thanks in advance

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2

Answers


  1. Chosen as BEST ANSWER
    0

    In the app nginx is not used but it is used in kubernetess ingress and there was a need to change the upload_max_filesize setting to bigger value. Default was 1MB


  2. 0

    To resolve this issue, your Angular app can request a SAS token with write permission from the Flask backend and use this SAS token to upload a file to Azure storage directly by JavaScript v12 SDK for browser.

    For how to generate a SAS token by python blob SDK, pls see my previous post. In this demo, you should set permission as permission=BlobSasPermissions(write=True) for uploading a file to the storage blob.

    This way could also greatly ease server IO pressure.

    Let me know if it helps.

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