How to block all external resource on import

Aspose.HTML Product Family
1

Hello,
I am using Aspose.HTML (v. 23.8.1) for .NET.
When I use my app behind a proxy that is not controlled by me, the request for external resources like
<link rel="stylesheet" type="text/css" href="https://cdn.sstatic.net/Sites/stackoverflow/primary.css?v=d51441aaae20">

trigger a really long file import.
Is it possible to block all imports of external resources?

2

@ork

We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): HTMLNET-4865

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

3

@ork

You can use the Message handler mechanism to intercept network requests, check the protocol in the URI and reject it.

using Aspose.Html;
using Aspose.Html.Net;
using Aspose.Html.Services;

namespace TestMessageHandlers;

internal class Program
{
    private static void Main(string[] args)
    {
        // Create an instance of the Configuration class
        using var configuration = new Configuration();

        // Call the INetworkService which contains the functionality for managing network operations
        var network = configuration.GetService<INetworkService>();

        // Add the TimeoutMessageHandler to the top of existing message handler chain
        network.MessageHandlers.Insert(0, new NetworkDisabledMessageHandler());

        // Prepare path to a source document file
        var documentPath = Path.Combine("c:\\temp", "document.html");

        // Create an HTML document with a custom configuration
        using var document = new HTMLDocument(documentPath, configuration);
    }

    // Define the NetworkDisabledMessageHandler class that is derived from the MessageHandler class
    public class NetworkDisabledMessageHandler : MessageHandler
    {
        // Override the Invoke() method
        public override void Invoke(INetworkOperationContext context)
        {
            if (context.Request.RequestUri.Protocol == "file:" || context.Request.RequestUri.Protocol == "base64:")
                Next(context);
        }
    }
}
4

The issues you have found earlier (filed as HTMLNET-4865) have been fixed in this update. This message was posted using Bugs notification tool by avpavlysh