luaHow to create HTTP server

We'll create sample HTTP server in the file named srv.lua and launch it with lua srv.lua command. Press Ctrl+C to stop server.

local server = require 'http.server'
local headers = require 'http.headers'

local srv = server.listen {
  host = 'localhost',
  port = 82,
  onstream = function (sv, out)
    local hdrs = out:get_headers()
    local method = hdrs:get(':method')
    local path = hdrs:get(':path') or '/'

    local rh = headers.new()
    rh:append(':status','200')
    rh:append('content-type','text/plain')

    out:write_headers(rh, false)
    out:write_chunk(("Received '%s' request on '%s' at %s\n"):format(method, path, os.date()), true)
  end
}

srv:listen()
srv:loop()ctrl + cyoutubegithub

`require 'http.` loads lua-http module	`server.listen` launch HTTP server to listen for requests
`localhost` host to listen on	`82` port to listen on
`onstream` callback to process request and return response	`method` request method
`path` request path	`out:write_headers` send headers to response
`out:write_chunk` send text to response	`srv:listen()` launch our HTTP server

Usage example

lua srv.lua
curl http://127.0.0.1:82/test

output

Received 'GET' request on '/test' at Fri Feb  4 13:42:53 2022

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