luarocks modules

Dogi

Hello, is there a way to install luarocks modules to run with LuaRT? in case i want to use LuaSocket for http connection,
how would i do that? I really appreciate any help.

Samir

HI Dogi,

Sadly LuaRocks on Windows is just a pain to use. I won't put efforts on support supporting it for LuaRT (I have not even tried).

I understand the problem, as LuaSocket binaries for Windows compatible with Lua 5.4 don't exists and building from sources is very hard.

You should use the LuaSocket binaries, compatible with Lua 5.4, bundled with LuaRT Studio and available under the bin\clibs54\ folder 👍🏻

Dogi

Samir Thank you for your answer, but im sorry, i dont get how do i " require " that module so that i would be able to make http requests with headers ( this is the reason i need it )

Dogi

Samir is there a way to "require" it? so i can send http requests with headers

Samir

LuaSocket is only available for scripts running in the LuaRT Studio IDE (to make it available at anytime you will need to copy the socket folders from the two previous locations inside your script folder).

Here is an example of an echo server runnable directly from LuaRT Studio :

-- load socket module
local socket = require("socket")
-- create a TCP socket and bind it to the local host, at any port
local server = assert(socket.bind("*", 80))
-- find out which port the OS chose for us
local ip, port = server:getsockname()
-- print a message informing what's up
print("Please telnet to localhost on port " .. port)
print("After connecting, you have 10s to enter a line to be echoed")
-- loop forever waiting for clients
while 1 do
  -- wait for a connection from any client
  local client = server:accept()
  -- make sure we don't block waiting for this client's line
  client:settimeout(10)
  -- receive the line
  local line, err = client:receive("test")
  -- if there was no error, send it back to the client
  if not err then client:send(line .. "\n") end
  -- done with client, close the object
  client:close()
end

Run it, and open your web browser and go to the following address "127.0.0.1"

Dogi

Samir thank you, but I'm looking for luasocket module that allows to make http requests with headers

wll8

Samir

The code above throws an error when run through the command line:

D:\xwapp\luart\LuaRT-Studio>luart untitled.lua
untitled.lua:2: module 'socket' not found:
        no field package.preload['socket']
        no file 'D:\xwapp\luart\bin\lua\socket.lua'
        no file 'D:\xwapp\luart\bin\lua\socket\init.lua'
        no file 'D:\xwapp\luart\bin\socket.lua'
        no file 'D:\xwapp\luart\bin\socket\init.lua'
        no file 'D:\xwapp\luart\bin\..\modules\socket\socket.lua'
        no file 'D:\xwapp\luart\bin\..\modules\socket\init.lua'
        no file '.\socket.lua'
        no file '.\socket.wlua'
        no file '.\socket\init.lua'
        no file 'D:\xwapp\luart\bin\lua\socket.wlua'
        no file 'D:\xwapp\luart\bin\socket.wlua'
        no file 'D:\xwapp\luart\bin\..\modules\socket\socket.wlua'
        no file '.\socket.wlua'
        no file ''
        no file 'D:\xwapp\luart\bin\socket.dll'
        no file 'D:\xwapp\luart\bin\..\lib\lua\5.4\socket.dll'
        no file 'D:\xwapp\luart\bin\..\modules\socket\socket.dll'
        no file 'D:\xwapp\luart\bin\loadall.dll'
        no file '.\socket.dll'
        no file ''

D:\xwapp\luart\LuaRT-Studio>where luart
D:\xwapp\luart\bin\luart.exe

I'm looking for an example of connecting to a luart WebSocket (ws) service using JavaScript.

After running LuaRT-Studio/examples/net/chatserver.lua, I'm unable to connect to it using JavaScript.

// Run this in a browser tab under http protocol
function startWs(wsLink){
  window.ws = new WebSocket(wsLink)
  ws.onopen = (evt) => { 
    ws.send(`client send`)
  }
  ws.onmessage = (evt) => {
    console.log( `serve get`, evt.data)
  }
}
startWs(`ws://127.0.0.1:5000`)

However, the JavaScript code above can successfully connect to a WebSocket service created by Node.js Express.

by luart v1.9.0

Samir

You're welcome. I don't use LuaSocket so I cannot help you more on this.
You should check the lualibs\socket folder in LuaRT Studio, it have the lua files you need (http.lua, headers.lua..)

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