Update

json = require "json"
local ws, err = http.websocket("ws://localhost:8082")

if err then
    print(err)

elseif ws then
    print("[TURTLE] > Connected")
    print("Which file would you like to request?")
    local file = read()
    print("[TURTLE] > Requesting files...")

    local sendMsg = {
        type = "requestFile",
        file = file
    }
    ws.send(json.encode(sendMsg))
    local message = ws.receive()
    local fileCont = json.decode(message)

    if fileCont.type == "file" then
        fileCont = fileCont.file

        local newFile = fs.open(file, "w")
        newFile.write(fileCont)
        newFile.close()

        print("[TURTLE] > Succesfully downloaded "..file)
    elseif fileCont.type == "error" then
        print("[TURTLE] > Error: "..fileCont.error)
    end
end

ws.close()