Need help with "Server"

local transferInfo = {
  action = "transfer",
  taker = "taker name",
  giverkey = "giverKey here",
  amount = 1,000,000,000

}

rednet.broadcast( transferInfo )

HPWebcamAble, on 14 January 2016 - 02:18 AM said:

- snip -

local host = 123


--# A method that waits for a message from the host to make sure it's up
local function isResponding()
    --# Try to get response from the server 5 times
    for i = 1, 5 do
        --# Send a message to the server so that it can later send one back
        rednet.send( host, {
            request = "ping";
        })
        --# Get response from the server
        local id, packet = rednet.receive( 1 )
        if id == host and type( packet ) == "table" and e[3]["response"] and e[3]["response"] == "pong" then --# Make sure that the id and message was valid
            return true
        end
    end
    return false
end


--# Check if the server is responding, if it isn't then print some error code or something
if isResponding() then
    --# the server is responding, do stuff
else
    print( "The server is not responding!" )
    error()
end

local e = { os.pullEvent() } --# Wait for an event
if e[1] == "rednet_message" then --# The first parameter you're going to get is the event, it's always the event
    if e[2] == 1337 and e[3] == "1337" then --# The second parameter in this case is going to be the ID of the sender, and the third is going to be the message
        print( "4 1337 M3554G3 W45 R3C13V3D" )
    end

elseif e[1] == "key" --# Do something else if a key was pulled
    --# code here etc.
end

function makeKey()
  a = math.random(0, 9)
  b = math.random(0, 9)
  c = math.random(0, 9)
  d = math.random(0, 9)
  e = math.random(0, 9)
  f = math.random(0, 9)
  g = math.random(0, 9)
  h = math.random(0, 9)
  i = math.random(0, 9)
  j = math.random(0, 9)

  newkey = a..b..c..d..e..f..g..h..i..j
  return newkey

end

local function makeKey()
    local key = ""
    for i = 1, 10 do
        key = key .. tostring( math.random( 0, 9 ) )
    end
    return key
end

• Tables
• Loops
• Event Handling

TheOddByte, on 15 January 2016 - 01:00 AM said:

it would be better to make the client program know what server it should connect to, instead of just sending the table to everyone.

HPWebcamAble, on 15 January 2016 - 01:13 AM said:

Ideally, broadcast is only used when a client wants to find servers in range

Ajt86, on 15 January 2016 - 05:14 PM said:

Ideally, rednet shouldn't even be used (easy packet sniffing and predictably simple protocol).

TheOddByte, on 15 January 2016 - 08:41 PM said:

Ajt86, on 15 January 2016 - 05:14 PM said:

Ideally, rednet shouldn't even be used (easy packet sniffing and predictably simple protocol).

Or you know, you can use rednet as a wrapper and create your own network api that's a bit more secure.

Ajt86, on 15 January 2016 - 05:14 PM said:

Ideally, rednet shouldn't even be used (easy packet sniffing and predictably simple protocol).

valithor, on 15 January 2016 - 08:58 PM said:

If you want the api to have any security at all, then you would need to use the modem api.