dotnet-debug.nvim

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dotnet-debug.nvim

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Neovim plugin for flexible Debug Adapter Protocol (DAP) configuration. Debug .NET applications (Core, ASP.NET Core, Android) using preferred debuggers like vsdbg-ui or netcoredbg directly within Neovim.

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# video
<a href="https://www.youtube.com/watch?v=S1Geve8Wl84">
  <img src="https://img.youtube.com/vi/S1Geve8Wl84/maxresdefault.jpg" alt="Debugging .NET for Android in Neovim" width="100%">
</a>

# dotnet-debug.nvim
`dotnet-debug.nvim` is a Neovim plugin that provides a flexible Debug Adapter Protocol (DAP) configuration for debugging .NET applications. It's designed to be debugger-agnostic, allowing users to integrate their preferred .NET debugger, such as `vsdbg-ui` or `netcoredbg`, with Neovim's DAP client. The plugin primarily focuses on enabling .NET debugging workflows, including specific support for Android targets.

This plugin sets up the necessary DAP adapters and handlers to connect Neovim to your chosen .NET debugger, facilitating features like breakpoints, stepping, variable inspection, and console output within your Neovim environment.

## Features

- Debug a .NET Core/ASP .NET Core project
- Debug a .NET for Android project

### Requirements

- [Neovim][3]
- [nvim-dap][1] - DAP client for [Neovim][3]
- [netcoredbg][2] - .NET Core debugger

## Installation

Assuming you are using `lazy.nvim`, add the following to your plugin configuration:

```lua
-- lazy.nvim minimal configuration
return {
  "kmiterror/dotnet-debug.nvim",
  dependencies = { "mfussenegger/nvim-dap" },
  -- For full configuration, see the examples below.
  config = function(_, opts)
    require("dotnet-debug").setup(opts)
  end,
}
```

## Configuration Examples

`dotnet-debug.nvim` is configured by passing options to its `setup()` function. The most critical options are `debugger_path` (the path to your chosen .NET debugger executable) and optionally `signer_path` (required by some debuggers like `vsdbg-ui` for handshake signing).

### Example with `vsdbg-ui` (Visual Studio Debugger UI)

This example shows how to configure `dotnet-debug.nvim` to use `vsdbg-ui`, typically found within a Visual Studio Code C# extension installation.

```lua
-- lazy.nvim configuration example for vsdbg-ui
return {
  "kmiterror/dotnet-debug.nvim",
  dependencies = { "mfussenegger/nvim-dap" },
  opts = {
    -- Path to the signing module.
    -- This is typically found within the Visual Studio Code.app bundle on macOS.
    signer_path = "/Applications/Visual Studio Code.app/Contents/Resources/app/node_modules.asar.unpacked/vsda/build/Release/vsda.node",
    -- This path is often found within the ms-dotnettools.csharp extension for VS Code.
    -- The `~` will be expanded to your home directory.
    debugger_path = "~/.vscode/extensions/ms-dotnettools.csharp-x.xxx.xx-darwin-arm64/.debugger/arm64/vsdbg-ui",
  },
  config = function(_, opts)
    require("dotnet-debug").setup(opts)
  end,
}
```

### Example with `netcoredbg`

This example demonstrates configuring `dotnet-debug.nvim` to use `netcoredbg`, a lightweight, open-source .NET Core debugger. `netcoredbg` typically does not require a separate `signer_path`.

```lua
-- lazy.nvim configuration example for netcoredbg
return {
  "kmiterror/dotnet-debug.nvim",
  dependencies = { "mfussenegger/nvim-dap" },
  opts = {
    -- Path to the netcoredbg executable.
    -- This can vary based on your installation method (e.g., global install, specific version).
    -- IMPORTANT: You must update this path to your actual netcoredbg installation.
    debugger_path = "/path/to/netcoredbg/netcoredbg",
    -- netcoredbg typically does not require a separate signer, so signer_path can be omitted
    -- or set to nil.
    signer_path = nil,
  },
  config = function(_, opts)
    require("dotnet-debug").setup(opts)
  end,
}
```

## `launch.json` Configuration Examples

Here are example `launch.json` configurations for different .NET application types. You should place this file in your project's `.vscode` directory.

### ASP.NET Core Web Application

For debugging ASP.NET Core web applications:

```json
{
  "name": ".NET Core Launch (web)",
  "type": "coreclr",
  "request": "launch",
  "program": "${workspaceFolder}/src/<YOUR_PROJECT_NAME>.Server.Core/bin/Debug/net10.0/<YOUR_PROJECT_NAME>.Server.Core.dll",
  "args": ["--interpreter=vscode"],
  "cwd": "${workspaceFolder}/src/<YOUR_PROJECT_NAME>.Server.Core",
  "stopAtEntry": false,
  "env": {
    "ASPNETCORE_URLS": "http://0.0.0.0:5010",
    "ASPNETCORE_ENVIRONMENT": "Development"
  }
}
```

### .NET Android Application

For debugging .NET Android applications:

```json
{
  "name": "Launch .NET Android",
  "type": "monovsdbg",
  "request": "launch",
  "projectPath": "${workspaceFolder}/src/<YOUR_PROJECT_NAME>.AndroidClient/<YOUR_PROJECT_NAME>.AndroidClient.csproj",
  "program": "${workspaceFolder}/src/<YOUR_PROJECT_NAME>.AndroidClient/bin/Debug/net10.0-android/<YOUR_PROJECT_NAME>.AndroidClient.dll",
  "cwd": "${workspaceFolder}",
  "buildConfiguration": "Debug",
  "adbTarget": "-s emulator-5554",
  "androidAttachDebugger": true,
  "androidSdbTargetPort": 50703,
  "androidSdbHostPort": 50703,
  "javaSdkDirectory": "/Library/Java/JavaVirtualMachines/microsoft-21.jdk/Contents/Home",
  "host": "127.0.0.1",
  "port": 4711,
  "debugServer": 4711,
  "debugPort": 50703,
  "useVSDbg": true,
  "platform": "android",
  "configuration": "Debug",
  "dotnetVersion": "10.0.100",
  "targetFramework": "net10.0-android",
  "justMyCode": true,
  "monoDebuggerOptions": {
    "ip": "127.0.0.1",
    "port": 50703,
    "platform": "android",
    "isServer": false,
    "assetsPath": "${workspaceFolder}/src/<YOUR_PROJECT_NAME>.AndroidClient/obj/Debug/net10.0-android/android/assets/;"
  }
}
```

## Legal Disclaimer

This plugin (`dotnet-debug.nvim`) is a tool for integrating various .NET debuggers with Neovim's Debug Adapter Protocol (DAP) client. It does not bundle, distribute, or endorse any specific debugger.

Users are solely responsible for acquiring, installing, and complying with the licensing terms and conditions of any third-party debugger (such as `vsdbg-ui`, `netcoredbg`, or others) they choose to use in conjunction with this plugin.

The configuration examples provided in this `README.md` are for illustrative purposes only, demonstrating how to connect different debuggers. These examples should not be construed as an endorsement of any particular debugger or as legal advice regarding their usage or licensing. Always refer to the official documentation and licensing agreements of the respective debugger.

[1]: https://github.com/mfussenegger/nvim-dap
[2]: https://github.com/Samsung/netcoredbg
[3]: https://github.com/neovim/neovim

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