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FinalVersion

Simple Server / Client

8 posts in this topic

I have absolutely no error checking at the moment, just trying to get the base working. I'm assuming my problem is in the server, but I can't spot it...

Also how can I change the title of a form / gui at run time?

Server:

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

$frmMain = GUICreate("Server - Not Connected", 375, 304, 192, 124)
$txtPort = GUICtrlCreateInput("", 35, 7, 46, 21)
$Label1 = GUICtrlCreateLabel("Port:", 5, 10, 26, 17)
$btnListen = GUICtrlCreateButton("&Listen", 215, 5, 75, 25)
$edtMain = GUICtrlCreateEdit("", 5, 35, 365, 264)
$btnExit = GUICtrlCreateButton("&Exit", 295, 5, 75, 25)
GUISetState(@SW_SHOW)

Local $sockMain = "", $sockClient = 0

If TCPStartup() <> 1 Then Exit

While 1
    If $sockMain = "" Then
        $sockMain = TCPListen("127.0.0.1", GUICtrlRead($txtPort))
    Else
        If $sockClient = 0 Then
            $sockClient = TCPAccept($sockMain)
        Else
            $szData = TCPRecv($sockClient, 255)
            GUICtrlSetData($edtMain, $szData)
        EndIf
    EndIf
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            If $sockMain <> "" Then TCPCloseSocket($sockMain)
            TCPShutdown()
            Exit
        Case $btnListen
            If GUICtrlRead($txtPort) = "" Then
                MsgBox(0, "Server", "You must enter a port to listen on!")
            Else
                $sockMain = TCPListen(@IPAddress1, GUICtrlRead($txtPort))
                If $sockMain = -1 Then
                    MsgBox(0, "Server", "Failed to set listening state!")
                Else
                    GUICtrlSetData($frmMain, "Server - Listening")
                EndIf
            EndIf
        EndSwitch
WEnd

Client

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

$frmMain = GUICreate("Client", 402, 62, 192, 124)
$Label1 = GUICtrlCreateLabel("IP:", 5, 10, 17, 17)
$txtIp = GUICtrlCreateInput("", 25, 7, 121, 21)
$Label2 = GUICtrlCreateLabel("Port:", 160, 10, 26, 17)
$txtPort = GUICtrlCreateInput("", 190, 7, 121, 21)
$btnConnect = GUICtrlCreateButton("&Connect", 325, 5, 75, 25)
$txtSend = GUICtrlCreateInput("", 5, 35, 316, 21)
$btnSend = GUICtrlCreateButton("&Send", 335, 35, 65, 25)
GUISetState(@SW_SHOW)

If TCPStartup() <> 1 Then Exit

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $btnConnect
            $sockMain = TCPConnect(GUICtrlRead($txtIp), GUICtrlRead($txtPort))
        Case $btnSend
            TCPSend($sockMain, GUICtrlRead($txtSend))
            GUICtrlSetData($txtSend, "")
    EndSwitch
WEnd

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Any hint for us about the symptoms you observe?


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None? :idea:

I found some bugs and modified the server part.

Compare old & new to see the difference.

Server

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

$frmMain = GUICreate("Server - Not Connected", 375, 304, 192, 124)
$txtPort = GUICtrlCreateInput("", 35, 7, 46, 21)
$Label1 = GUICtrlCreateLabel("Port:", 5, 10, 26, 17)
$btnListen = GUICtrlCreateButton("&Listen", 215, 5, 75, 25)
$edtMain = GUICtrlCreateEdit("", 5, 35, 365, 264)
$btnExit = GUICtrlCreateButton("&Exit", 295, 5, 75, 25)

$ip = @IPAddress1 ;use the public ip
;$ip = "127.0.0.1" ;use local ip

GUISetState(@SW_SHOW)
_debugConsoleWrite("Server listening on IP: " & $ip & @CRLF)

Local $sockMain = -1, $sockClient = -1

If TCPStartup() <> 1 Then Exit

While 1
    If $sockMain = -1 Then
        $sockMain = TCPListen($ip, GUICtrlRead($txtPort))
        _debugConsoleWrite("Server sockMain: " & $sockMain & @CRLF)
   Else
        If $sockClient = -1 Then
            $sockClient = TCPAccept($sockMain)
            _debugConsoleWrite("Server sockMain: " & $sockMain & " sockClient: " & $sockClient & @CRLF)
        Else
            $szData = TCPRecv($sockClient, 255)
            if $szData <> "" Then
                GUICtrlSetData($edtMain,  @HOUR & ":" & @MIN & ":" & @SEC & " >> " & $szData & @CRLF & GUICtrlRead($edtMain))
                _debugConsoleWrite("Server sockMain: " & $sockMain & " sockClient: " & $sockClient & " szData: '" & $szData & "'" & @CRLF)
            EndIf
        EndIf
    EndIf
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            If $sockMain <> -1 Then TCPCloseSocket($sockMain)
            TCPShutdown()
            Exit
        Case $btnListen
            If GUICtrlRead($txtPort) = "" Then
                MsgBox(0, "Server", "You must enter a port to listen on!")
            Else
                $sockMain = TCPListen($ip, GUICtrlRead($txtPort))
                If $sockMain = -1 Then
                    MsgBox(0, "Server", "Failed to set listening state!")
                Else
                    WinSetTitle($frmMain, "", "Server - Listening on " & $ip)
                EndIf
            EndIf
        EndSwitch
    WEnd

Func _debugConsoleWrite($txt)
    If @Compiled = 0 Then
        ConsoleWrite(@HOUR & ":" & @MIN & ":" & @SEC & " >> " & $txt)
    EndIf
EndFunc

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