Client

print("client")
local component = require("component")
local computer = require("computer")
local event = require("event")
local m = component.modem
local spaceing = "}|}!"
local spaceing2 = "!?!?db?!?}{w"
local self_address
local connectedToRouter = false
local router_address = ""
local test_passed = false
local prefix = "remote_robots"
local robots_string
local isConnected = false
m.open(5)
computer.beep()

function split(s, delimiter)
    result = {};
    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
        table.insert(result, match);
    end
    return result;
end
function sendMessage(to, message)
    m.send(router_address, 5, "send" .. spaceing .. to .. spaceing .. message)
    end
function sendBroadcast(message)
    m.send(router_address, 5, "broadcast" .. spaceing .. message)
    end
function listenToRouter()
    local _, _, from, port, _, message = event.pull("modem_message")
    if port == 5 then
        command = split(message, spaceing)
        if command[1] == "transmit" then
            if command[2] == "send" then
                if command[4] == "connectionTest" then
                    test_passed = true
                    end
                end
            if command[2] == "broadcast" then
                end
            end
        if command[1] == "connect" then
            if command[2] == "2" then
                connectToRouter()
                end
            end
        end
    end

function connectToRouter()
    m.broadcast(5, "connect" .. spaceing)
    local _, _, from, port, _, message = event.pull("modem_message")
    if port == 5 then
        command = split(message, spaceing)
        if command[1] == "connect" then
            if command[2] == "1" then
                router_address = from
                self_address = command[3]
                connectedToRouter = true
                end
            end
        end
    end
function start()
    print("searching for router...")
    connectToRouter()
    connectToRouter()
    print("Done...")
    print("test connection...")
    sendMessage(self_address, "connectionTest")
    listenToRouter()
    if test_passed == true then
        print("Done... Connection works...")
        print("searching for robots...")
        sendBroadcast(prefix .. spaceing2 .. "searching_for_robot")
        local run = true
        while true do
            local _, _, from, port, _, message = event.pull(10, "modem_message")
            if from == nil then
                run = false
                break
                else
                    if port == 5 then
                        command = split(message, spaceing)
                        if command[3] == self_address then
                        else
                            print(message)
                        end
                    end
            end
        end
        print("")
        else
            print("test failed, try again...")
            start()
            end
    end
start()