bogQ

Learning about TCP servers and clients connection

18 posts in this topic




Nice tutorial. You should probably look at using variable declaration in your examples. For example your Global declaration should be Local as the variable isn't used anywhere else but in Local scope.


_AdapterConnections()_AlwaysRun()_AppMon()_AppMonEx()_BinaryBin()_CheckMsgBox()_CmdLineRaw()_ContextMenu()_ConvertLHWebColor()/_ConvertSHWebColor()_DesktopDimensions()_DisplayPassword()_DotNet_Load()/_DotNet_Unload()_Fibonacci()_FileCompare()_FileCompareContents()_FileNameByHandle()_FilePrefix/SRE()_FindInFile()_GetBackgroundColor()/_SetBackgroundColor()_GetConrolID()_GetCtrlClass()_GetDirectoryFormat()_GetDriveMediaType()_GetFilename()/_GetFilenameExt()_GetHardwareID()_GetIP()_GetIP_Country()_GetOSLanguage()_GetSavedSource()_GetStringSize()_GetSystemPaths()_GetURLImage()_GIFImage()_GoogleWeather()_GUICtrlCreateGroup()_GUICtrlListBox_CreateArray()_GUICtrlListView_CreateArray()_GUICtrlListView_SaveCSV()_GUICtrlListView_SaveHTML()_GUICtrlListView_SaveTxt()_GUICtrlListView_SaveXML()_GUICtrlMenu_Recent()_GUICtrlMenu_SetItemImage()_GUICtrlTreeView_CreateArray()_GUIDisable()_GUIImageList_SetIconFromHandle()_GUIRegisterMsg()_GUISetIcon()_Icon_Clear()/_Icon_Set()_IdleTime()_InetGet()_InetGetGUI()_InetGetProgress()_IPDetails()_IsFileOlder()_IsGUID()_IsHex()_IsPalindrome()_IsRegKey()_IsStringRegExp()_IsSystemDrive()_IsUPX()_IsValidType()_IsWebColor()_Language()_Log()_MicrosoftInternetConnectivity()_MSDNDataType()_PathFull/GetRelative/Split()_PathSplitEx()_PrintFromArray()_ProgressSetMarquee()_ReDim()_RockPaperScissors()/_RockPaperScissorsLizardSpock()_ScrollingCredits_SelfDelete()_SelfRename()_SelfUpdate()_SendTo()_ShellAll()_ShellFile()_ShellFolder()_SingletonHWID()_SingletonPID()_Startup()_StringCompact()_StringIsValid()_StringRegExpMetaCharacters()_StringReplaceWholeWord()_StringStripChars()_Temperature()_TrialPeriod()_UKToUSDate()/_USToUKDate()_WinAPI_Create_CTL_CODE()_WinAPI_CreateGUID()_WMIDateStringToDate()/_DateToWMIDateString()Au3 script parsingAutoIt SearchAutoIt3 PortableAutoIt3WrapperToPragmaAutoItWinGetTitle()/AutoItWinSetTitle()CodingDirToHTML5FileInstallrFileReadLastChars()GeoIP databaseGUI - Only Close ButtonGUI ExamplesGUICtrlDeleteImage()GUICtrlGetBkColor()GUICtrlGetStyle()GUIEventsGUIGetBkColor()Int_Parse() & Int_TryParse()IsISBN()LockFile()Mapping CtrlIDsOOP in AutoItParseHeadersToSciTE()PasswordValidPasteBinPosts Per DayPreExpandProtect GlobalsQueue()Resource UpdateResourcesExSciTE JumpSettings INISHELLHOOKShunting-YardSignature CreatorStack()Stopwatch()StringAddLF()/StringStripLF()StringEOLToCRLF()VSCROLLWM_COPYDATAMore Examples...

Updated: 04/09/2015

Share this post


Link to post
Share on other sites

I'm sure this will help a lot of people who are new to TCP!

I would love to see an example as detailed as this about maintaining multiple connections!

Share this post


Link to post
Share on other sites

#4 ·  Posted (edited)

server is already set to handle more than 1 connection, you just need to:

get rid of msgbox (use gui commands instead) that pause server

limit if needed numebr of connection that it will handle

change how and when will server disconnect clients

Read server part with explained code for more info.

Edited by bogQ

TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

Thanks for the code and tutorial, helpful codes. let me start by saying i am a beginner, so please don't laugh too at my questions!

1. with your codes, I have to run the server and client codes on every PC connected on my network. is there a possibility that I might run the codes for server just once and on the other PCs, i will just have to run but the codes for clients?

2. I wish to have 3 or more Computers, the first computer is my master, where my server runs, the other computers are my client. I wish to send message in both dirrection via TCP as is the case with your codes how am I going to do it?

3. I have tried to open TCP socket via internet but all my attemps have failed. my internet IPaddress is 192.168.1.1

I will be grateful if you find time and provide me some helps.

Best regards

Hubert

Share this post


Link to post
Share on other sites

#6 ·  Posted (edited)

Guess i need to add litle more info about networks on first post

lets expalind it heare like this

I have 2 computers and i need to do TCP over wireless network.

My first computer (he will be server) need to lissen on my second adapter (my first adapter is lan, my second adapter is wireless card), he (wirelles card) is with IP adress @IPAddress2 or 192.168.0.1 (@IPAddress2 is my wireless adapter IP that i manyaly tuped on adapter)

my second computer that have only client on him is with ip address 192.168.0.2 on his wireless lan card and he is connected over that card to my wireless card so that we can be in network, but his IP is not important cos i only need to know server IP adress 192.168.0.1 so that i can connect on him.

so on server im starting it with

$Listen = TCPListen(@IPAddress2, 1018, 500)

or with $Listen = TCPListen('192.168.0.1', 1018, 500), it is identical cos @IPAddress2 will return (in my case) IP address of my second device 192.168.0.1

and on client script im putting

$Socket = TCPConnect('192.168.0.1', 1018)

so im connection on IP adress of server with client

now let's say that i wanna connect more than one pc but not on my wireless network cos it accept only 2 computers, i wanna do it on lan network adapter (my first lan device), on lan i have 6 PC-s connected on network.

My first comp is with ip adress lets say 10.0.252.30 on my local area connection adapter.

How can i confirm that my ip is 10.0.252.30?! From start meny i sellect run (or in win 7 just tupe cmd and hit enter with no run) tupe in cmd and press enter. after that in cmd i type in ipconfig and press enter.

it will list all of your adapters and their ip (IPv4) addresses.

So im gona start server on my network lan adapter

$Listen = TCPListen('10.0.252.30', 1018, 500)

and every client i connect on him will connect to that ip adress

so on client im dooing this

$Socket = TCPConnect('10.0.252.30', 1018)

So i will connect more than one client and only one comp (my first comp) will serve as my server.

Note that somethimes firewall can cose problems, so if you have problems turn it off to see if it will work.

As for internet communication i can't help a lot, i never tried coz my ports are forwarded. Main thing i know is if your behind router form your ISP and your ports arn't forwarded you need to call your ISP on the phone and to tell him to forward that darn port and don't hang up till he say "ok i forwarded it".

If router is in your controll, don't call ISP, take a look at this videos (they are nice tytorials)

and do it yourself ;)

here you can check if others can see you on that port

http://www.yougetsignal.com/tools/open-ports/

or

http://www.canyouseeme.org/

Edited by bogQ

TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

#7 ·  Posted (edited)

Thank you bogQ for this terrific tutorial!

The time you put into this is very much appreciated!

Great work!

Would you be okay with taking this to the next level?

-Adding GUI instead of Msgbox

-Having one script work as both server and client to create an Instant Messaging program

-Adding Contact List of all machines that are connected (listed as IP address or @ComputerName

This would probably be a big project, but written in the style that you have already done would be of great help.

I figure it never hurts to ask and certainly you've given us a great base of understanding to work from.

Thank you again!

Edited by coffeeturtle

Share this post


Link to post
Share on other sites

Thnx for your helpful topic.

I have a question though. I would like to use TCP to connect (lets say) 2 computers but in different houses. So different IP adresses.

So the connection should go via WAN, not LAN. How can I make my real IP adress, like 77.170.181.98, serve as a server?

Thnx in advance :)

Share this post


Link to post
Share on other sites

#9 ·  Posted (edited)

Guess someone with more experience with internet communication should answer this one but if im wrong they can still correct me or at least confirm if this is correct :P (as i stated before "i can't help a lot, i never tried coz my ports are forwarded")

So "if im not wrong",

one computer is server, his public IP address is 77.170.181.98

one client, we dont need to know his ip adress, but he need to know server public IP address.

Server TCPListen on his addapter IP adress (so that isnt 77.170.181.98, we need adapter address) (port must be forwarded on router)

Client connect to 77.170.181.98 server public IP adress.

So client try to connect to server

*Client send msg to server ip adress

77.170.181.98:8080 -> "are you there?"

*router recive msg for port 8080 and forward it on that port to your listening device 10.0.252.30

->77.170.181.98:8080 -> 10.0.252.30:8080 -> "are you there?"

Edited by bogQ

TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

#10 ·  Posted (edited)

that's basically how it works. i just use TCPListen("0.0.0.0", 8080) and it automatically listens on your default adaptor. no need to even get lan/wan ip on the server.

on the router, forward 8080 to your local server ip.

on the client, connect to the servers WAN.

or use @IPAddress1 instead of 0.0.0.0. either should work fine.

edit: 0.0.0.0 makes it listen on "any available" ip, so it will work with multiple adaptoras, i believe.

Edited by caleb41610

Share this post


Link to post
Share on other sites

Ok thnx for the info.

It is still not working though.

This is a picture of the port I forwarded (is this right??):

Posted Image

And then this is the server script line:

$Listen = TCPListen('192.168.2.8', 8080, 500)

And this is the client's line:

$Socket = TCPConnect('77.170.181.98', 8080)

This should be good, right?

It is not working though, please tell me if I did something wrong

Share this post


Link to post
Share on other sites

as i told my isp did not forwarded my ports so i can test

in theory it should work

i posted 2 links in first post

http://www.yougetsignal.com/tools/open-ports/

or

http://www.canyouseeme.org/

so can they see you on port 8080?

another question is , is your port 8080 free? no other program is using him?

did you try on some other port? is your wirewall off?


TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

Ok thnx for the info.

It is still not working though.

This is a picture of the port I forwarded (is this right??):

Posted Image

And then this is the server script line:

$Listen = TCPListen('192.168.2.8', 8080, 500)

And this is the client's line:

$Socket = TCPConnect('77.170.181.98', 8080)

This should be good, right?

It is not working though, please tell me if I did something wrong

You must also open the port in your firewall.

Share this post


Link to post
Share on other sites

#15 ·  Posted (edited)

Ok still now working.

I changed to port 8081 (just to be sure the port wasn't used by anything else)

I also opened 8081 on my windows firewall.

I checked with the port website, and it says the port is open (if the server is running):

As you see, the port is open.Posted Image

Now when I run the client, I get the following error:

!--> TCPConnect error number ( 10060 ), look in the help file (on MSDN link) on func TCPConnect to get more info about this error.

BTW: I'm running the client and server on the same pc (thus same ip adress). Could this be causing my trouble?

I've been trying to make this work for ages now, please help me out once more!

Thnx :)

Edited by ludocus

Share this post


Link to post
Share on other sites

#16 ·  Posted (edited)

yes it can, if you ever had experience with wamp server or wow servers for example, you couldn't never connect to the site or gameserver on internet connection ip adress from the computer that is running that server, but you can go to that adress if you go to some proxy with browser site and connecting with it with no problems.

so

WSAETIMEDOUT 10060

Connection timed out.

A connection attempt failed because the connected party did not properly respond after a period of time, or the established connection failed because the connected host has failed to respond.

can be cuz of that, and in addition it can be cuz of port problem, or something third.

So please do try to connect with 2 different computers with 2 different internet connection on them. (call some friend and tell him to run your client)

if it dont work try some other random ports eg 3724 8129 28960...

and try to lisssen on ip 0.0.0.0

for some other info to "can it realy work" you can look at this post to see that TCP do work on internet if everything is configyred in the correct way and your isp isnt playing with you.

http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

Edited by bogQ

TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

just a quick note from my side, after i convince my isp to geave me some free ports for next month, i tryed to connect over internet on port 8080 today to test do it work or not

tcp lisen on 0.0.0.0 and after that on @IPAddress1 with port 8080, connected to server public IP and message recived, sended, and recived with no problems

port 80 did have probably cos my wamp did use it when i try it on.

So it do work with no problem if everything is configured correctly.


TCP server and client - Learning about TCP servers and clients connection
Au3 oIrrlicht - Irrlicht project
Au3impact - Another 3D DLL game engine for autoit. (3impact 3Drad related)



460px-Thief-4-temp-banner.jpg
There are those that believe that the perfect heist lies in the preparation.
Some say that it’s all in the timing, seizing the right opportunity. Others even say it’s the ability to leave no trace behind, be a ghost.

 

Share this post


Link to post
Share on other sites

#18 ·  Posted (edited)

Excellent. This was exactly what I needed.

I have another script I'm building that's generating text output. I wanted to be able to call a separate script running a TCP server, pass the data over Stdin, and have the Server duplicate out whatever data is was sent to whatever clients are connected at the time, and manage listening, opening, and closing Sockets.

I have something like this compiled to .EXE, though if running as an .au3 file, it will prompt you with an Input box for data to send. Connect and disconnect as many Telnet (Putty, Teraterm) sessions as you want and they start getting output.

 

#include <Array.au3>
#include <WinAPIProc.au3>
;Ref https://www.autoitscript.com/forum/topic/144987-learning-about-tcp-servers-and-clients-connection/
    $ParentPID = _WinAPI_GetParentProcess()
TCPStartup()
OnAutoItExitRegister("OnAutoItExit")
    Dim $Socket_Data[1]
$Socket_Data[0] = 0
$Listen = TCPListen("0.0.0.0", 1018, 500)
If @error Then
    ConsoleWrite('!--> TCPListen error number ( ' & @error & ' ), look in the help file (on MSDN link) on func TCPListen to get more info about this error.' & @CRLF)
    Exit
EndIf
    While ProcessExists($ParentPID)
    If @Compiled=0 Then
        $TCPdata=InputBox("TCPServer","Type Data to send")
    Else
        $TCPData = ConsoleRead()
        EndIf
        If StringLen($TCPData) > 0 Then
        For $x = $Socket_Data[0] To 1 Step -1
            TCPSend($Socket_Data[$x], $TCPData)
            If @error Then
                _CloseConnection()
            EndIf
        Next
    EndIf
    _Accept()
    Sleep(500)
WEnd
    Func _Accept()
    Local $Accept = TCPAccept($Listen)
    If $Accept <> -1 Then
        _ArrayAdd($Socket_Data, $Accept)
        $Socket_Data[0] += 1
    EndIf
EndFunc   ;==>_Accept
    Func _CloseConnection()
    _ArrayDelete($Socket_Data, $x)
    $Socket_Data[0] -= 1
EndFunc   ;==>_CloseConnection
    Func OnAutoItExit()
    TCPShutdown() ; Close the TCP service.
EndFunc   ;==>OnAutoItExit

    I then use this script to establish the link to Stdin:
     

    #include <AutoItConstants.au3>
$iPID = Run("tcpserver.exe", "", @SW_HIDE, $STDIN_CHILD)
While 1
    $Data=InputBox("Input","data")
    StdinWrite($iPID,$Data)
Wend
   

 

Edited by TurionAltec

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Similar Content

    • tarretarretarre
      By tarretarretarre
      AutoIt-SocketIo
      Yep yep, this is pretty much an attempt to port the existing project's concept https://socket.io/ to AutoIt's Codebase. So i will not go in to so much detail.
      This is how the communication is done http://i.imgur.com/0mMfsBD.png Each client is isolated to the server http://i.imgur.com/rVO2LFb.png Features
      Easy API VarType Translation (Example: If the server sends an int, the client will receive an int and vice versa) Fully featured examples Data encryption (Using Autoit's UDF Crypt.au3) Limitations / Drawbacks
      Every Broadcast/Emit is limited to a maximum of 16 parameters Every Callback Function has to have the same number of parameters as the Broadcasted/Emited event It is not possible to Broadcast/Emit objects Only 1D-arrays are allowed to be Broadcasted/Emitted (2D arrays will probably never be supported) Changelog
      Version 1.4.0 (This update DOES NOT break scripts)
      Added a new server method: _Io_getSockets which will return an array of all sockets. See more in the doc Added a banning-system, see more at: _Io_getBanlist, _Io_Ban, _Io_Sanction, _Io_IsBanned Added a new default event for clients banned. See more at default events Added two new client and server methods _Io_setEventPreScript And _Io_setEventPostScript. The intent for these is to not DRY when doing debug \ tasks that requires to be ran before or after events. Added a new client and server method _Io_ClearEvents. Added a third optional parameter to _Io_On called $socket, you may only pass the socket returned from _Io_Listen or _Io_Connect. The intent for this change is to allow for server + client in the same envoirment. Added a second parameter to _Io_Loop called $WhoAmI which should used with the new enums $_IO_SERVER and $_IO_CLIENT. The intent for this change is to allow for server + client in the same envoirment. Added a new client method _Io_TransferSocket. Added a new server method _Io_getActiveSocketCount. Optimations, avoiding Redims and unnecessary nested arrays as good as possible etc. Version 1.3.0 (This update DOES NOT break scripts)
      Got rid of unnecessary Redims with sockets and subscriptions in the main loop (This increased write performence greatly) Changed $iMaxDeadSocketsBeforeTidy from 100 to 1000 Changed _Io_setRecvPackageSize($nPackageSize = 2048) to _Io_setRecvPackageSize($nPackageSize = 4096) because 2017. Added Tests for both subscriptions and the automatic TidyUp Added a new server method: _Io_getMaxConnections Added a new server method: _Io_getMaxDeadSocketsCount Added a fifth parameter to the _Io_Listen method called $iMaxConnections which defaults to 100000. If the iMaxConnection + 1 user connects, they will be instantly disconnected. Added a parameter to _Io_Disconnect called $socket which defaults to null. If the iMaxConnections + 1 client connects, they will be instantly disconnected. Version 1.2.0 (This update DOES NOT break scripts)
      Added an option to set the packet-size of TCP-transports, see _Io_setRecvPackageSize Got rid of unnecessary StringLen's in _Io_loop Changed __Io_TidyUp to _Io_TidyUp and added it to the public Api reference list. Changed $iMaxDeadSocketsBeforeTidy default value from 1000 to 100 and added an option to disable it, read more at _Io_Listen Changed $bAutoReconnect from False to True. Fixed gitignore epicZ fail Improvemend Documentation Version 1.1.0 (This update DOES NOT break scripts)
      Fixed bug when Emitting / Broadcasting without any parameters causing a $fCallback crash Optimized Package-handling once again. Added 1D-Array support (Endless nestning). Added Subscriptions (See _Io_Subscribe _Io_Unsubscribe and _Io_BroadcastToRoom). Added new example for subscriptions (Be sure to use different room names when joining with clients) Added Unit testing (See Tests\Runner.au3 and Tests\Tests.au3, to run tests you need a udf found here: https://github.com/tarreislam/Autoit-Unit-Tester) Version 1.0.0
      (This update DOES NOT break scripts) Added data encryption (Using Autoit's UDF Crypt.au3) See more at _Io_EnableEncryption Added new method _Io_Disconnect which can be used with both servers and clients Improved package-handling to increase performance Increased the limit of Broadcasted/Emit parameters from 10 to 16 Api methods
      Server methods
      _Io_Listen($iPort, $iAddress = @IPAddress1, $iMaxPendingConnections = Default, $iMaxDeadSocketsBeforeTidy = 1000, $iMaxConnections = 100000) _Io_Subscribe(ByRef $socket, $sRoomName) _Io_Unsubscribe(ByRef $socket, $sRoomName = null) _Io_Broadcast(ByRef $socket, $sEventName, $p1, $p2, ...$p16)  
      _Io_BroadcastToAll(ByRef $socket, $sEventName, $p1, $p2, ...$p16) _Io_BroadcastToRoom(ByRef $socket, $sDesiredRoomName, $sEventName, $p1, $p2, ...$p16) _Io_socketGetProperty(ByRef $socket, $sProp = Default) _Io_getSockets($bForceUpdate = False, $socket = $__g_io_mySocket, $whoAmI = $__g_io_whoami) _Io_getDeadSocketCount() _Io_getSocketsCount() _Io_getActiveSocketCount() _Io_getMaxConnections() _Io_getMaxDeadSocketsCount() _Io_getBanlist($iEntry = Default) _Io_Ban($socketOrIp, $nTime = 3600, $sReason = "Banned", $sIssuedBy = "system") _Io_Sanction($socketOrIp) _Io_IsBanned($socketOrIp) _Io_TidyUp() Client methods
      _Io_Connect($iAddress, $iPort, $bAutoReconnect = True) _Io_Reconnect(ByRef $socket) Server and Client methods
      _Io_setEventPreScript($fCallback) _Io_setEventPostScript($fCallback) _Io_getVer() _Io_On(Const $sEventName, Const $fCallback, $socket = $__g_io_mySocket) _Io_Emit(ByRef $socket, $sEventName, $p1, $p2, ...$p16) _Io_Loop(ByRef $socket, $whoAmI = $__g_io_whoami) _Io_LoopFacade() _Io_EnableEncryption($sFileOrKey, $CryptAlgId = $CALG_AES_256) _Io_Disconnect($socket = null) _Io_setRecvPackageSize($nPackageSize = 4096) _Io_ClearEvents() _Io_TransferSocket(ByRef $from, ByRef $to) Default events
      Server events
      connection Client events
      banned Server and Client events
      disconnect View source on github
       
      Autoit-Socket-IO-1.0.0.zip (OLD!)
      Autoit-Socket-IO-1.1.0.zip (OLD)
      Autoit-Socket-IO-1.3.0.zip (OLD)
      Autoit-Socket-IO-1.4.0.zip (NEWEST 2017-08-11)
    • timmalos
      By timmalos
      Hello all.
      In case this is interesting few of you, I share my AMCP 2.1 protocol UDF in AutoIT. This protocol is used by CasparCG server, which is a Windows and Linux software used to play out professional graphics, audio and video to multiple outputs as a layerbased real-time compositor. It has been in 24/7 broadcast production since 2006. It's free and opensource.
      The UDF I share allows communication between an AutoIt based client and the CasparCG, based on following documentation : http://casparcg.com/wiki/CasparCG_2.1_AMCP_Protocol
      If you want more details on CasparCG :  official WebSite or have a look to this video
      I'm currently building a full Client based on AutoIt, with many features like drag-and-drop layers, but sadly I can't share it right now, might come later. Don't hesitate to ask questions if you have any or need a basic example.
      The only requirement for this UDF is the other Event-driven TCP UDF by Kip
       
       

      AMCP_shared.au3
      TCP.au3
    • kingjacob90
      By kingjacob90
      Hi
      I am trying to send a file over TCP from a TCP client to server. If I run the server and client on the same computer the file is send fine, but if the server is on one computer on the network and the client on another the file is sent in what looks like more than one packet. In other words the server receives 4 msg from the client.
      Why is this, how do I make it send in one go, or what is a way around it?
      Side Note: TCP server has a max of 999999999
    • AlexFing17
      By AlexFing17
      i am trying to figure out how a server can connect to a client Over the internet. 
      In this is script. The client connects to the server on the same machine (localhost) and executes the commands from the client.
      How can I change that instead communicating over localhost to communicate over the internet with tcp ipaddress and a port.
       
      What i actually need help of is
      1. The server will open a port and  listen to communication from a No-ip address
      2. I input the no-ip address and correct port in the client side, and when i click on connect, it connects to the server if its online
       
       
      This is the client
      #include <GuiConstantsEx.au3> THIS IS THE CLIENT #include <NamedPipes.au3> #include <StaticConstants.au3> #include <WinAPI.au3> #include <WindowsConstants.au3> ; =============================================================================================================================== ; Description ...: This is the client side of the pipe demo ; Author ........: Paul Campbell (PaulIA) ; Notes .........: ; =============================================================================================================================== ; =============================================================================================================================== ; Global constants ; =============================================================================================================================== Global Const $BUFSIZE = 4096 Global Const $DEFCMD = "cmd.exe /c dir c:\" Global Const $PIPE_NAME = "\\$\\pipe\\AutoIt3" Global Const $ERROR_MORE_DATA = 234 ; =============================================================================================================================== ; Global variables ; =============================================================================================================================== Global $g_idEdit, $g_idMemo, $g_idSend, $g_idServer, $g_hPipe ; =============================================================================================================================== ; Main ; =============================================================================================================================== CreateGUI() MsgLoop() ; =============================================================================================================================== ; Creates a GUI for the client ; =============================================================================================================================== Func CreateGUI() Local $hGUI = GUICreate("FarC0nn3c7", 500, 400, -1, -1, $WS_SIZEBOX) GUICtrlCreateLabel("Server:", 2, 14, 52, 20, $SS_RIGHT) $g_idServer = GUICtrlCreateEdit("<local>", 56, 10, 200, 20, $SS_LEFT) GUICtrlCreateLabel("Command:", 2, 36, 52, 20, $SS_RIGHT) $g_idEdit = GUICtrlCreateEdit($DEFCMD, 56, 32, 370, 20, $SS_LEFT) $g_idSend = GUICtrlCreateButton("Pawn Dem", 430, 32, 60, 20) $g_idMemo = GUICtrlCreateEdit("", 0, 62, _WinAPI_GetClientWidth($hGUI), 332) GUICtrlSetFont($g_idMemo, 9, 400, 0, "Courier New") GUISetState() EndFunc ;==>CreateGUI ; =============================================================================================================================== ; Logs an error message to the display ; =============================================================================================================================== Func LogError($sMessage) $sMessage &= " (" & _WinAPI_GetLastErrorMessage() & ")" GUICtrlSetData($g_idMemo, GUICtrlRead($g_idMemo) & $sMessage & @CRLF) EndFunc ;==>LogError ; =============================================================================================================================== ; Logs a message to the display ; =============================================================================================================================== Func LogMsg($sMessage) GUICtrlSetData($g_idMemo, GUICtrlRead($g_idMemo) & $sMessage & @CRLF) EndFunc ;==>LogMsg ; =============================================================================================================================== ; MsgLoop ; =============================================================================================================================== Func MsgLoop() While True Switch GUIGetMsg() Case $g_idSend SendCmd() Case $GUI_EVENT_CLOSE Exit EndSwitch WEnd EndFunc ;==>MsgLoop ; =============================================================================================================================== ; This function opens a pipe to the server ; =============================================================================================================================== Func OpenPipe() Local $sName, $sPipe ; Get pipe handle $sName = GUICtrlRead($g_idServer) If $sName = "<local>" Then $sName = "." $sPipe = StringReplace($PIPE_NAME, "$", $sName) $g_hPipe = _WinAPI_CreateFile($sPipe, 2, 6) If $g_hPipe <> -1 Then Return True LogError("OpenPipe failed") Return False EndFunc ;==>OpenPipe ; =============================================================================================================================== ; This function reads a message from the pipe ; =============================================================================================================================== Func ReadMsg() Local $bSuccess, $iRead, $pBuffer, $tBuffer $tBuffer = DllStructCreate("char Text[4096]") $pBuffer = DllStructGetPtr($tBuffer) GUICtrlSetData($g_idMemo, "") While 1 $bSuccess = _WinAPI_ReadFile($g_hPipe, $pBuffer, $BUFSIZE, $iRead, 0) If $iRead = 0 Then ExitLoop If Not $bSuccess Or (_WinAPI_GetLastError() = $ERROR_MORE_DATA) Then ExitLoop GUICtrlSetData($g_idMemo, StringLeft(DllStructGetData($tBuffer, "Text"), $iRead), 1) WEnd EndFunc ;==>ReadMsg ; =============================================================================================================================== ; This function sends a command to the server ; =============================================================================================================================== Func SendCmd() If OpenPipe() Then SetReadMode() WriteMsg(GUICtrlRead($g_idEdit)) ReadMsg() _WinAPI_CloseHandle($g_hPipe) EndIf EndFunc ;==>SendCmd ; =============================================================================================================================== ; This function sets the pipe read mode ; =============================================================================================================================== Func SetReadMode() If Not _NamedPipes_SetNamedPipeHandleState($g_hPipe, 1, 0, 0, 0) Then LogError("SetReadMode: _NamedPipes_SetNamedPipeHandleState failed") EndIf EndFunc ;==>SetReadMode ; =============================================================================================================================== ; This function writes a message to the pipe ; =============================================================================================================================== Func WriteMsg($sMessage) Local $iWritten, $iBuffer, $pBuffer, $tBuffer $iBuffer = StringLen($sMessage) + 1 $tBuffer = DllStructCreate("char Text[" & $iBuffer & "]") $pBuffer = DllStructGetPtr($tBuffer) DllStructSetData($tBuffer, "Text", $sMessage) If Not _WinAPI_WriteFile($g_hPipe, $pBuffer, $iBuffer, $iWritten, 0) Then LogError("WriteMsg: _WinAPI_WriteFile failed") EndIf EndFunc ;==>WriteMsg  
      And this is the server
      #include <GuiConstantsEx.au3> #include <NamedPipes.au3> #include <WinAPI.au3> #include <WindowsConstants.au3> #NoTrayIcon ; =============================================================================================================================== ; Description ...: This is the server side of the pipe demo ; Author ........: Paul Campbell (PaulIA) ; Notes .........: ; =============================================================================================================================== ; =============================================================================================================================== ; Global constants ; =============================================================================================================================== Global Const $DEBUGGING = False Global Const $BUFSIZE = 4096 Global Const $PIPE_NAME = "\\.\\pipe\\AutoIt3" Global Const $TIMEOUT = 5000 Global Const $WAIT_TIMEOUT = 258 Global Const $ERROR_IO_PENDING = 997 Global Const $ERROR_PIPE_CONNECTED = 535 ; =============================================================================================================================== ; Global variables ; =============================================================================================================================== Global $g_hEvent, $g_idMemo, $g_pOverlap, $g_tOverlap, $g_hPipe, $g_hReadPipe, $g_iState, $g_iToWrite ; =============================================================================================================================== ; Main ; =============================================================================================================================== CreateGUI() InitPipe() MsgLoop() ; =============================================================================================================================== ; Creates a GUI for the server ; =============================================================================================================================== Func CreateGUI() Local $hGUI $hGUI = GUICreate("Pipe Server", 500, 400, -1, -1, $WS_SIZEBOX) $g_idMemo = GUICtrlCreateEdit("", 0, 0, _WinAPI_GetClientWidth($hGUI), _WinAPI_GetClientHeight($hGUI)) GUICtrlSetFont($g_idMemo, 9, 400, 0, "Courier New") GUISetState() EndFunc ;==>CreateGUI ; =============================================================================================================================== ; This function creates an instance of a named pipe ; =============================================================================================================================== Func InitPipe() ; Create an event object for the instance $g_tOverlap = DllStructCreate($tagOVERLAPPED) $g_pOverlap = DllStructGetPtr($g_tOverlap) $g_hEvent = _WinAPI_CreateEvent() If $g_hEvent = 0 Then LogError("InitPipe ..........: API_CreateEvent failed") Return EndIf DllStructSetData($g_tOverlap, "hEvent", $g_hEvent) ; Create a named pipe $g_hPipe = _NamedPipes_CreateNamedPipe($PIPE_NAME, _ ; Pipe name 2, _ ; The pipe is bi-directional 2, _ ; Overlapped mode is enabled 0, _ ; No security ACL flags 1, _ ; Data is written to the pipe as a stream of messages 1, _ ; Data is read from the pipe as a stream of messages 0, _ ; Blocking mode is enabled 1, _ ; Maximum number of instances $BUFSIZE, _ ; Output buffer size $BUFSIZE, _ ; Input buffer size $TIMEOUT, _ ; Client time out 0) ; Default security attributes If $g_hPipe = -1 Then LogError("InitPipe ..........: _NamedPipes_CreateNamedPipe failed") Else ; Connect pipe instance to client ConnectClient() EndIf EndFunc ;==>InitPipe ; =============================================================================================================================== ; This function loops waiting for a connection event or the GUI to close ; =============================================================================================================================== Func MsgLoop() Local $iEvent Do $iEvent = _WinAPI_WaitForSingleObject($g_hEvent, 0) If $iEvent < 0 Then LogError("MsgLoop ...........: _WinAPI_WaitForSingleObject failed") Exit EndIf If $iEvent = $WAIT_TIMEOUT Then ContinueLoop Debug("MsgLoop ...........: Instance signaled") Switch $g_iState Case 0 CheckConnect() Case 1 ReadRequest() Case 2 CheckPending() Case 3 RelayOutput() EndSwitch Until GUIGetMsg() = $GUI_EVENT_CLOSE EndFunc ;==>MsgLoop ; =============================================================================================================================== ; Checks to see if the pending client connection has finished ; =============================================================================================================================== Func CheckConnect() Local $iBytes ; Was the operation successful? If Not _WinAPI_GetOverlappedResult($g_hPipe, $g_pOverlap, $iBytes, False) Then LogError("CheckConnect ......: Connection failed") ReconnectClient() Else $g_iState = 1 EndIf EndFunc ;==>CheckConnect ; =============================================================================================================================== ; This function reads a request message from the client ; =============================================================================================================================== Func ReadRequest() Local $pBuffer, $tBuffer, $iRead, $bSuccess $tBuffer = DllStructCreate("char Text[" & $BUFSIZE & "]") $pBuffer = DllStructGetPtr($tBuffer) $bSuccess = _WinAPI_ReadFile($g_hPipe, $pBuffer, $BUFSIZE, $iRead, $g_pOverlap) If $bSuccess And ($iRead <> 0) Then ; The read operation completed successfully Debug("ReadRequest .......: Read success") Else ; Wait for read Buffer to complete If Not _WinAPI_GetOverlappedResult($g_hPipe, $g_pOverlap, $iRead, True) Then LogError("ReadRequest .......: _WinAPI_GetOverlappedResult failed") ReconnectClient() Return Else ; Read the command from the pipe $bSuccess = _WinAPI_ReadFile($g_hPipe, $pBuffer, $BUFSIZE, $iRead, $g_pOverlap) If Not $bSuccess Or ($iRead = 0) Then LogError("ReadRequest .......: _WinAPI_ReadFile failed") ReconnectClient() Return EndIf EndIf EndIf ; Execute the console command If Not ExecuteCmd(DllStructGetData($tBuffer, "Text")) Then ReconnectClient() Return EndIf ; Relay console output back to the client $g_iState = 3 EndFunc ;==>ReadRequest ; =============================================================================================================================== ; This function relays the console output back to the client ; =============================================================================================================================== Func CheckPending() Local $bSuccess, $iWritten $bSuccess = _WinAPI_GetOverlappedResult($g_hPipe, $g_pOverlap, $iWritten, False) If Not $bSuccess Or ($iWritten <> $g_iToWrite) Then Debug("CheckPending ......: Write reconnecting") ReconnectClient() Else Debug("CheckPending ......: Write complete") $g_iState = 3 EndIf EndFunc ;==>CheckPending ; =============================================================================================================================== ; This function relays the console output back to the client ; =============================================================================================================================== Func RelayOutput() Local $pBuffer, $tBuffer, $sLine, $iRead, $bSuccess, $iWritten $tBuffer = DllStructCreate("char Text[" & $BUFSIZE & "]") $pBuffer = DllStructGetPtr($tBuffer) ; Read data from console pipe _WinAPI_ReadFile($g_hReadPipe, $pBuffer, $BUFSIZE, $iRead) If $iRead = 0 Then LogMsg("RelayOutput .......: Write done") _WinAPI_CloseHandle($g_hReadPipe) _WinAPI_FlushFileBuffers($g_hPipe) ReconnectClient() Return EndIf ; Get the data and strip out the extra carriage returns $sLine = StringLeft(DllStructGetData($tBuffer, "Text"), $iRead) $sLine = StringReplace($sLine, @CR & @CR, @CR) $g_iToWrite = StringLen($sLine) DllStructSetData($tBuffer, "Text", $sLine) ; Relay the data back to the client $bSuccess = _WinAPI_WriteFile($g_hPipe, $pBuffer, $g_iToWrite, $iWritten, $g_pOverlap) If $bSuccess And ($iWritten = $g_iToWrite) Then Debug("RelayOutput .......: Write success") Else If Not $bSuccess And (_WinAPI_GetLastError() = $ERROR_IO_PENDING) Then Debug("RelayOutput .......: Write pending") $g_iState = 2 Else ; An error occurred, disconnect from the client LogError("RelayOutput .......: Write failed") ReconnectClient() EndIf EndIf EndFunc ;==>RelayOutput ; =============================================================================================================================== ; This function is called to start an overlapped connection operation ; =============================================================================================================================== Func ConnectClient() $g_iState = 0 ; Start an overlapped connection If _NamedPipes_ConnectNamedPipe($g_hPipe, $g_pOverlap) Then LogError("ConnectClient .....: ConnectNamedPipe 1 failed") Else Switch @error ; The overlapped connection is in progress Case $ERROR_IO_PENDING Debug("ConnectClient .....: Pending") ; Client is already connected, so signal an event Case $ERROR_PIPE_CONNECTED LogMsg("ConnectClient .....: Connected") $g_iState = 1 If Not _WinAPI_SetEvent(DllStructGetData($g_tOverlap, "hEvent")) Then LogError("ConnectClient .....: SetEvent failed") EndIf ; Error occurred during the connection event Case Else LogError("ConnectClient .....: ConnectNamedPipe 2 failed") EndSwitch EndIf EndFunc ;==>ConnectClient ; =============================================================================================================================== ; Dumps debug information to the screen ; =============================================================================================================================== Func Debug($sMessage) If $DEBUGGING Then LogMsg($sMessage) EndFunc ;==>Debug ; =============================================================================================================================== ; Executes a command and returns the results ; =============================================================================================================================== Func ExecuteCmd($sCmd) Local $tProcess, $tSecurity, $tStartup, $hWritePipe ; Set up security attributes $tSecurity = DllStructCreate($tagSECURITY_ATTRIBUTES) DllStructSetData($tSecurity, "Length", DllStructGetSize($tSecurity)) DllStructSetData($tSecurity, "InheritHandle", True) ; Create a pipe for the child process's STDOUT If Not _NamedPipes_CreatePipe($g_hReadPipe, $hWritePipe, $tSecurity) Then LogError("ExecuteCmd ........: _NamedPipes_CreatePipe failed") Return False EndIf ; Create child process $tProcess = DllStructCreate($tagPROCESS_INFORMATION) $tStartup = DllStructCreate($tagSTARTUPINFO) DllStructSetData($tStartup, "Size", DllStructGetSize($tStartup)) DllStructSetData($tStartup, "Flags", BitOR($STARTF_USESTDHANDLES, $STARTF_USESHOWWINDOW)) DllStructSetData($tStartup, "StdOutput", $hWritePipe) DllStructSetData($tStartup, "StdError", $hWritePipe) If Not _WinAPI_CreateProcess("", $sCmd, 0, 0, True, 0, 0, "", DllStructGetPtr($tStartup), DllStructGetPtr($tProcess)) Then LogError("ExecuteCmd ........: _WinAPI_CreateProcess failed") _WinAPI_CloseHandle($g_hReadPipe) _WinAPI_CloseHandle($hWritePipe) Return False EndIf _WinAPI_CloseHandle(DllStructGetData($tProcess, "hProcess")) _WinAPI_CloseHandle(DllStructGetData($tProcess, "hThread")) ; Close the write end of the pipe so that we can read from the read end _WinAPI_CloseHandle($hWritePipe) LogMsg("ExecuteCommand ....: " & $sCmd) Return True EndFunc ;==>ExecuteCmd ; =============================================================================================================================== ; Logs an error message to the display ; =============================================================================================================================== Func LogError($sMessage) $sMessage &= " (" & _WinAPI_GetLastErrorMessage() & ")" ConsoleWrite($sMessage & @LF) EndFunc ;==>LogError ; =============================================================================================================================== ; This function is called when an error occurs or when the client closes its handle to the pipe ; =============================================================================================================================== Func ReconnectClient() ; Disconnect the pipe instance If Not _NamedPipes_DisconnectNamedPipe($g_hPipe) Then LogError("ReconnectClient ...: DisonnectNamedPipe failed") Return EndIf ; Connect to a new client ConnectClient() EndFunc ;==>ReconnectClient