PuppeteerSharpRendererOptions.localBrowserExecutablePath still tries to communicate with outside

[draptik]

I am trying to understand how to configure Plotly.NET so it does not require a connection to the internet.

The setup I am dealing with:

• a dotnet c# web-api, which calls an f# module using Plotly.NET
• I pass the path to a local chrome instance as parameter
• I use PuppeteerSharpRendererOptions.localBrowserExecutablePath <- Some validpath
• The path is configured in appsettings.json,i.e.:

  "ChromeSettings": {
    "Path": "/same-directory/as-the-application/chrome-linux64/chrome"
  }

With strict firewall settings on the target machine, I can see that there are still calls to the outside which are prohibited.
This leads to a timeout.

Opening some IPs in the firewall solved the problem, but that shouldn't be needed, if the local chrome version works.

This is an absolute show-stopper: This library should not communicate with the outside, once deployed.

I am a bit at a loss:

• what options do I have?
• is there a simple way of providing a minimal example?
• worst case: are there similar libraries for dotnet?

Thankful for any pointers.

Versions:

    <PackageVersion Include="Plotly.NET" Version="5.1.0"/>
    <PackageVersion Include="Plotly.NET.ImageExport" Version="6.1.0"/>

{
  "sdk": {
    "version": "8.0.0",
    "rollForward": "latestMajor",
    "allowPrerelease": true
  }
}

[kMutagene]

Hey @draptik,

I have a hunch what could be the issue. Have you set up Plotly.NET to use the full bundled plotly.js source? If not, the default settings apply, which will try to load plotly.js from the CDN in the documents, which could explain the outbound calls.

If this does not fix the issue, there might be more related PuppeteerSharp configs that i am not aware of, which i guess are best found in their docs.

[draptik]

@kMutagene thanks for pointing me in the right direction:

let toSvg chart =
    chart
    |> Chart.withDisplayOptionsStyle (PlotlyJSReference = Full)
    |> Chart.toSVGString (Width = 840, Height = 480)

Setting the PlotlyJSReference to Full solved the problem!

Thank you very much!