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msgpack-rpc testing

msgpack-rpc is a inter-process messaging library that uses MessagePack for object serialization.

  • msgpack-rpc service implementation with Ruby. Add gem 'msgpack-rpc' in your Gemfile
require 'msgpack/rpc'

class MyHandler
  def add(x, y)
    x + y
  end

  def hello(name)
    "hello " + name
  end
end

svr = MessagePack::RPC::Server.new
svr.listen('0.0.0.0', 18800, MyHandler.new)
svr.run
  • msgpack-rpc request from index.http file
### msgpack add request
//@name msgpack-add
MSGPACK 127.0.0.1:18800/add
Content-Type: application/json

[1, 2]


### msgpack hello request
//@name msgpack-hello
MSGPACK 127.0.0.1:18800/hello
Content-Type: application/json

"Jackie"

Neovim RPC testing

Yes, you can use NIVM to test Nvim RPC.

  • Start Nvim with RPC service: nvim --listen 127.0.0.1:6666
  • Call nvim_comand_name from NVIM as following:
### nvim Lua exec
NVIM nvim_exec_lua
Content-Type: text/x-lua

vim.api.nvim_command('!ls')

### msgpack request
NVIM nvim_buf_set_lines
Host: 127.0.0.1:6666
Content-Type: application/json

[0, 0, 0, true, ["hello"]]

For more, please refer https://neovim.io/doc/user/api.html

X-Args-N HTTP Header

X-Args-0, X-Args-1 introduce for language injection in JetBrains IDEs.

For example, if you want to invoke nvim_exec_lua, first param is Lua code, and second param is array as params for Lua code. You can introduce X-Args-1: [] for second params, and http body as first param, then you easy to edit Lua code with language injection. 

### nvim Lua exec
//@name nvim-lua
MSGPACK 127.0.0.1:6666/nvim_exec_lua
Content-Type: text/x-lua
X-Args-1: []

local mark = "line:"
return mark .. vim.api.nvim_win_get_cursor(0)[1]

You can use this feature with JSONRPC and DUBBO methods.