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thanh159

TCP Listen (socket and packet )

2 posts in this topic

#1 ·  Posted (edited)

I want to listen packet from another ip send to my PC on port 8888

and close which sockets try to flood my PC by send packet using WPE

:) thanks :!

Edited by thanh159

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#2 ·  Posted (edited)

The example for TCPRecv has a full single-connection server: http://www.autoitscript.com/autoit3/docs/functions/TCPRecv.htm

If you need multiple connections (you probably do), I know someone posted an example 5 years ago on the forum. I can't find it at the moment, sorry.

However, if you are looking at a telnet client or HTTP server. Then both of my examples have support for multiple connections. I will tell you what I told someone else yesterday who asked for remote control in turning pumps on and off:

It would be easy to set up a telnet server written in AutoIt to do what you want. In the past I have made availabele a telnet server skeleton to get you started:

Here you can implement commands like:

Switch $sBuffer[$x]
    Case "quit", "q", "exit"
        ; Closes the server on the remote client
        TCPCloseSocket($sSocket[$x])
        $sSocket[$x] = ""
        $sBuffer[$x] = ""
        $iAuth[$x] = 0
    Case "pumpon"
        ; Turn the pump on with some Autoit code here
        TCPSend($sSocket[$x], "Pump is turned on")
    Case "pumpoff"
        ; Turn the pump off with some Autoit code here
        TCPSend($sSocket[$x], "Pump is turned off")
    Case Else
        TCPSend($sSocket[$x], "Invalid command. Valid commands are: pumpon, pumpoff, quit.")
EndSwitch

You connect to the server via a telnet client from any operating system and most smartphones. If you think that a telnet server is not powerful enough for you, or you simply don't want to type commands then you can get started with this HTTP server:

The downside of the HTTP server is that authentication is not supported in the skeleton like it is in the telnet client.

There is an issue with this. You mentioned WPE. Since AutoIt is fully interpreted it will not have the same performance as the same thing written in another language that is more low-level. When you tell WPE to open 100 connections to the server, and spam parseable messages into those connections, then the server will probably not work anymore until it handles all those packets which may take a few minutes even.

The telnet server has favorable performance over the HTTP server. Mainly because if you have not yet authenticated it will only check the password like a dumb robot until you send the right password. You can make it drop the connection after a wrong password and I predict that the server will stand up to WPE with reasonable performance. No warranties though.

Edited by Manadar

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