According to the overview at https://microsoft.github.io/language-server-protocol/overviews/lsp/overview/, VSCode language servers are essentially JSON-RPC servers. Once VSCode is open and running at least 1 language server, how can you tell what port that language server is running on in order to access it from outside of VSCode?
I want to make an experimental application where a VSCode language server is the back-end for a custom code editor that runs in a separate process.
A language server is usually a console application launched by VSCode based on configuration, and its stdin/stdout streams are redirected. There is no port opened usually. Aka, JSON-RPC is a protocol over stdin/stdout, not JSON over HTTP.
If you want to integrate a language server with your own editor, you might fully implement the language server protocol client on the editor side, so that it can perform the same language server process management and stdin/stdout stream redirection. There are many open source projects out there for famous editors, such as
https://github.com/autozimu/LanguageClient-neovim
https://github.com/atom-community/atom-languageclient
Depending on the programming language your editor is built upon, you can find more specific examples to follow.
Related
I made an LSP server for a language named Typer. I can build the server executable and use a pipe connection. I've used Emacs as a client with lsp-mode to test my server so far. I would like to use VsCode as a client also for testing purposes. Can someone guide me on how to do it?
I am developing a free software code coverage tool that leverages LSP. I do not want to reinvent the wheel in order to specify and launch a particular language server. What seems to make sense is to use VSCode to obtain the LS extension from the marketplace which will establish an entry in ~/.vscode/extensions. Once I have the extension on my computer I would use it to launch the LS much as VSCode does.
So now I need to grok this extension format to develop a launcher inside my tool. I am looking for specs, examples, tutorials, code or other material that will help, especially from other developers who have done this already.
I am already quite familiar with the LSP spec and some Microsoft VSCode sites and articles, fwiw.
Perhaps a link to the VSCode source where it leverages an extension to launch a language server would be helpful.
I'm currently working on creating a LabVIEW server and LabVIEW client for gRPC.
I would like to know if LabVIEW is one of the supported languages for protocol buffers for gRPC?
There is an open source repository where NI has been building tools to enable users to create a LabVIEW Server gRPC interface: https://github.com/ni/grpc-labview
There is not currently a lot of client support for gRPC in LabVIEW.
LabVIEW is not currently supported for gRPC, for official information on supported languages refer to the gRPC Languages page.
There have been attempts at implementation using either C++, .Net or Python integration but no official packages that I am aware of.
Full gRPC implementation in a language is a pretty complex process that must enable a language to build classes based on the configuration of a Protobuf definition file.
I've taken a look at the VS Code documentation on creating a language server but can only see reference to a nodejs implementation. Is there SDK support for creating a language server written in C#? Ultimately this would be a DNX or Core 1.0 library.
It doesn't matter which language is being used to create a language server. as long as you are able to communicate with it from within Visual Studio Code.
A common way to establish the communication is made by using the VSCode Language Server Protocol.
You can build your language service in C#, Java, C++, Delphi or whatever language as long as you create a command line server which is able to handle that protocol.
You can see how a language server in C# is implemented when you take a look at the OmniSharp project.
I need to show to a user an interface of some application running on a server using a browser. It should be like RDP-client for a single application on a server.
Are there any solutions or services that can implement following functionality? Maybe Citrix?
Thanks in advance!
This looks like what you're looking for:
http://freerdp.net/
About FreeRDP-WebConnect
FreeRDP-WebConnect is an open source gateway for accessing RDP
sessions using any HTML5 compliant browser. In particular it relies on
the Canvas and the WebSockets feature. FreeRDP-WebConnect is a
subproject of the FreeRDP project.
On the server side, a standalone daemon - written in C++ - provides a
Web page via HTTPS (or HTTP, if configured) and uses FreeRDP libs to
connect as a client to any RDP session. The server side WebSockets
implementation handles current RFC6455 only, so browsers that
implement the older drafts do not work. With RFC6455 being raised to
the "Proposed Standard" level, this should change now really soon.
I would create an account on the server for the user, and only give it access to the one application it needs access to.
You can use Cameyo. To start, create yourself a free account, and click on "Add App". If your installer supports unattended installation, you simply need to submit it. Otherwise, you can build a Cameyo package locally and send it in. It will then be playable as HTML5.
You don't indicate what server you are running on.
As an alternative to FreeRDP-Webconnect cited above, also open source and also using FreeRDP as rdp client through an HTTP gateway, there is Myrtille.
FreeRDP-WebConnect embeds a standalone daemon written in C++ to provide a web page via HTTP(S), and so will also work on Linux servers, while Myrtille have a IIS/.NET (C#) implementation and an MSI installer, thus is more intended for Windows Servers.