Sending picture over tcp

[deathkillspt]

Ok so i have a client and a server when the client sends the command "desktop" to the server the server takes a screenshot, and sends it to the client, the client then recives the information and assembles the picture out of it...there is a problem though when i go to view the screenshot that the client assembled it doesn't show. i'm trying to be as clear as i can but it's kind of hard for me to explain here is my source.

Client:

expandcollapse popup

#include <GUIConstants.au3>

dim $sock

#region GUI
$frmmain = GUICreate("Send picture", 795, 577, 179, 116)
$picdesktop = GUICtrlCreatePic("Capture.jpg", 8, 8, 777, 529, BitOR($SS_NOTIFY,$WS_GROUP))
$txtip = GUICtrlCreateInput("127.0.0.1", 520, 544, 121, 21)
$txtport = GUICtrlCreateInput("1337", 648, 544, 57, 21)
$btnconnect = GUICtrlCreateButton("Connect", 712, 544, 75, 25, 0)
$txtsend = GUICtrlCreateInput("", 8, 544, 161, 21)
$btnsend = GUICtrlCreateButton("Send", 176, 544, 75, 25, 0)
$lblstatus = GUICtrlCreateLabel("Status: Disconnected", 312, 544, 156, 20)
GUISetState(@SW_SHOW)
#endregion

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
    Case $GUI_EVENT_CLOSE
            Disconnect()
            Exit
            
        case $btnconnect
            Connect()
            
        case $btnsend
            SendToServer()
        EndSwitch
        
        Recive()
    WEnd
    
    func Recive();Recive routine
        $recv = TCPRecv($sock,100000000)
        
            if StringInStr($recv,"desktop") Then
                $temp = StringSplit($recv,":")
                FileWrite("Screenie.jpg",$temp[2])
            EndIf
            
            if $recv = "ac" Then
                GUICtrlSetData($lblstatus,"Status: Connected")
            EndIf
    EndFunc
        
    func SendToServer();Send routine
        TCPSend($sock,guictrlread($txtsend))
    EndFunc
            
    func Connect();Connect routine
        TCPStartup()
        $sock = TCPConnect(guictrlread($txtip),guictrlread($txtport))
    EndFunc
    
    func Disconnect();Disconnect routine
        TCPSend($sock,"disconnect")
        TCPCloseSocket($sock)
        TCPShutdown()
    EndFunc

Server:

#include <A3LScreenCap.au3>

Global $Connectedsock = -1
Global $sock = -1
Local $ip = "127.0.0.1"
Local $port = 1337

TCPStartup()
$sock = TCPListen($ip,$port);Wait for connection

while 1
    $recv = TCPRecv($connectedsock,100000000);Recive the data from the client
    
    if $recv = "disconnect" Then
        $connectedsock = -1
    EndIf
    
    if $recv = "desktop" Then
        _ScreenCap_Capture("pic.jpg")
        $file = FileOpen("pic.jpg",16)
        $fileread = FileRead($file)
        FileClose($file)
        TCPSend($connectedsock,"desktop:" & $fileread)
    EndIf
    
    if $connectedsock = -1 Then;Accept the connection
        $connectedsock = TCPAccept($sock)
        if $connectedsock <> - 1 Then
            TCPSend($connectedsock,"ac")
        EndIf
    EndIf
WEnd

Edited September 7, 2007 by deathkillspt

[deathkillspt]

Come on someone please help me.

[PsaltyDS]

Where, exactly, does it fail? Does the server generate the screenshot file to disk correctly, and that file is usable? Does the file get transferred correctly to the client, and is usable from disk? Does the graphical code on the client correctly present the file if you manually copy it over?

[deathkillspt]

Does the server generate the screenshot file to disk correctly, and that file is usable?

Yes

Does the file get transferred correctly to the client, and is usable from disk?

No, I think it's failing here.

Does the graphical code on the client correctly present the file if you manually copy it over?

Actuallly it doesn't for some reason?

But for instance if i do this:

#include <A3LScreenCap.au3>

_ScreenCap_Capture("Picture.jpg")
$file = FileOpen("Picture.jpg",16)
$fileread = FileRead($file)
FileWrite("Picture2.jpg",$fileread)

It works like a charm.

But if i try to send $fileread over the connection and assemble it on the client side it doesnt work right, It just shows a whole bunch of numbers and it doesnt look anything like the graphical code of the picture taken on the server side.

Edited September 7, 2007 by deathkillspt

[deathkillspt]

Thank you for explaining that a little better larry i have seen your scripts about this subject and i couldn't really make any sense of them. Now, i still dont know how to implement that into my script could you help me out a little?

[deathkillspt]

W00t W00t i thought about what larry said and i've finally got atleast something that works

Client:

expandcollapse popup

#include <GUIConstants.au3>

dim $sock

#region GUI
$frmmain = GUICreate("Send picture", 795, 577, 179, 116)
$picdesktop = GUICtrlCreatePic("Capture.jpg", 8, 8, 777, 529, BitOR($SS_NOTIFY,$WS_GROUP))
$txtip = GUICtrlCreateInput("127.0.0.1", 520, 544, 121, 21)
$txtport = GUICtrlCreateInput("1337", 648, 544, 57, 21)
$btnconnect = GUICtrlCreateButton("Connect", 712, 544, 75, 25, 0)
$txtsend = GUICtrlCreateInput("", 8, 544, 161, 21)
$btnsend = GUICtrlCreateButton("Send", 176, 544, 75, 25, 0)
$lblstatus = GUICtrlCreateLabel("Status: Disconnected", 312, 544, 156, 20)
GUISetState(@SW_SHOW)
#endregion

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
    Case $GUI_EVENT_CLOSE
            Disconnect()
            Exit
            
        case $btnconnect
            Connect()
            
        case $btnsend
            SendToServer()
        EndSwitch
        
        Recive()
    WEnd
    
    func Recive();Recive routine
        $recv = TCPRecv($sock,100000000)
        
            if StringInStr($recv,"[start]") Then
                do
                    $chars = TCPRecv($sock,1)
                    FileWrite("Screenie.jpg",$chars)
                until $recv = "[end]"
            EndIf
            
            if $recv = "ac" Then
                GUICtrlSetData($lblstatus,"Status: Connected")
            EndIf
    EndFunc
        
    func SendToServer();Send routine
        TCPSend($sock,guictrlread($txtsend))
    EndFunc
            
    func Connect();Connect routine
        TCPStartup()
        $sock = TCPConnect(guictrlread($txtip),guictrlread($txtport))
    EndFunc
    
    func Disconnect();Disconnect routine
        TCPSend($sock,"disconnect")
        TCPCloseSocket($sock)
        TCPShutdown()
    EndFunc

Server:

expandcollapse popup

#include <A3LScreenCap.au3>

Global $Connectedsock = -1
Global $sock = -1
Local $ip = @IPAddress1
Local $port = 1337

TCPStartup()
$sock = TCPListen($ip,$port);Wait for connection

while 1
    $recv = TCPRecv($connectedsock,100000000);Recive the data from the client
    
    if $recv = "disconnect" Then
        $connectedsock = -1
    EndIf
    
    if StringInStr($recv,"run") Then
        $temp = StringSplit($recv,":")
        Run($temp[2])
    EndIf
    
    if $recv = "desktop" Then
        _ScreenCap_Capture("pic.jpg")
        $file = FileOpen("pic.jpg",0)
        $size = FileGetSize("pic.jpg")
        TCPSend($connectedsock,"[start]")
        while $size > 0
            $fileread = FileRead($file,1)
            TCPSend($connectedsock,$fileread)
            $size = $size - 1
        WEnd
        TCPSend($connectedsock,"[end]")
        FileDelete("pic.jpg")
    EndIf
    
    if $connectedsock = -1 Then;Accept the connection
        $connectedsock = TCPAccept($sock)
        if $connectedsock <> - 1 Then
            TCPSend($connectedsock,"ac")
        EndIf
    EndIf
WEnd

Now time to refine it and make it faster.

Edited September 7, 2007 by deathkillspt

[Hidix17]

If you want to "read" image, you should do something like this:

#include <A3LScreenCap.au3>
#include <File.au3>

_ScreenCap_Capture("Picture.jpg")
If FileExists("Picture.txt") then
FileDelete("Picture.txt")
Endif
FileCopy("Picture.jpg","Picture.txt")
$Image = FileRead("Picture.txt")

Edited December 9, 2014 by Hidix17

[BrewManNH]

Pretty sure that whoever was needing that information won't need it 7 years later.