Logging JSON RPC messages

Hello, I hope this is the right place to post this. If not, I apologize and please point me in the right direction.

I have been using this (great) implementation to build a language server that communicates with a vs code extension that uses the vscode-languageclient package. I am using version 18.1 of the server and 7.0.0-next.12 of vscode-languageclient.

I have implemented about 10 handlers and all is good but I've still never figured out how I can print the actual JSON RPC messages that are being sent between my server and my extension project. I can log just fine using Serilog and write to the output window in my extension with the ILanguageServerFacade and ITextDocumentLanguageServer interfaces but only with content I put in as strings, not the JSON RPC messages themselves.

I am not sure if this is something that I do with the ConfigureLogging method in the LanguageServer declaration or if there's another method or what, I can't seem to figure it out. I've gotten this far without it but I would really like to see these messages for a better understanding of the communication between client and server.

I should mention that I followed the Language Server Extension Guide that explained how to create a setting in the extension to set the verbosity of the communication between the server and client and print it, and I have done this and set the setting to "Verbose," but still, I only see my own hard-coded strings from the ILanguageServerFacade, etc. In the screenshot in the link, JSON RPC messages are printed, so I just don't understand. I assume it is because I need to manually configure this somewhere and don't know how..

Any help would be great and an example would be awesome. Thanks ahead for any help and if I need to post any code, I can.

Start with the LanguageServer declaration and its ConfigureLogging method, then compare the repository behavior with the linked Language Server Extension Guide and the reported Verbose setting. Done means identifying the relevant configuration or limitation and documenting a reproducible example for viewing JSON-RPC messages.