WatsonWebserver.Core.dll - System.Text.Json loading issue.

[GitHubProUser67]

Hello, with the last version of the nuget package, an issue started to happen, which is related to assembly loading.

This states that the assembly System.Text.Json is unable to be loaded.

I tried to copy it to the output directory, didn't help.

For some reasons this happens when loading it as a library alone, loading it within a server using the package makes this issue disapear.

So to sum it up:

HTTPServer -> Plugin -> WatsonWebserver.Core.dll -> Fails.

WatsonWebserver.Core.dll -> Costura.Fody -> HTTPSecureServer -> Plugin -> Success.

[jchristn]

Strange, this isn't happening for me using WatsonWebserverTest. Any additional steps to help reproduce?

[GitHubProUser67]

Yep, strange issue, the steps to reproduce are this:

Go to this project https://github.com/GitHubProUser67/MultiServer3

Dowload it via the download zip function, then press build.bat

After this go to ~BuildOutput/Multiserver/Debug|Release and start the HTTPServer.exe

[jchristn]

Just built it and didn't receive an error.

[GitHubProUser67]

Yep, that's because there is no plugins.

Ideally compile a plugin such as HomeWebTools and start the server.

[jchristn]

Sorry, I built from VS instead of running build.bat. Reporting back in a moment.

[jchristn]

Yep, I see the exception.

It looks like you're running into an issue caused by dependency loading from using things like Assembly.LoadFromFile and other similar methods.

I've had to deal with this in other projects, and to get around it, I've had to ensure that subordinate projects correctly packed dependencies in their output. Specifically, this in the .csproj file. e.g. if project A is dynamically loading project B, project B must have this in the .csproj file, specifically within the top-level property group, to ensure the right DLLs are packed:

<CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
<PublishSingleFile>true</PublishSingleFile>
<SelfContained>true</SelfContained>

I'm happy to chat with you to go through a very, very similar example to yours that caused me to go through this exact exercise and deal with this same problem. Please feel free to email me at joel dot christner at gmail dot com.

However, since this isn't an issue with the library, I'll close this and move it to discussions.

Cheers, Joel