Sign in to follow this  
Followers 0
yair

UDP crash test

2 posts in this topic

#1 ·  Posted (edited)

im trying to setup a simple crash detector.

my software will send an int every few seconds via udp socket

autoit3 should run in loop and trip on failed transmition.

i tried doing it like so

but am getting a brain freeze.

; Start The UDP Services
;==============================================
UDPStartup()
; Register the cleanup function.
OnAutoItExitRegister("Cleanup")
; Bind to a SOCKET
;==============================================
$socket = UDPBind("127.0.0.1", 65532)
If @error <> 0 Then Exit
While 1
$data=""
    $data = UDPRecv($socket, 50)
$msg="stop"
;my software send sa "3" and it apears as this...
    If $data == "0x696E74002C69000000000003" Then
        $msg="continue"
    EndIf
    sleep(1000)
if $msg == "stop" Then ExitLoop
WEnd
MsgBox("error","",1)
Func Cleanup()
    UDPCloseSocket($socket)
    UDPShutdown()
EndFunc

any help?

Edited by yair

Share this post


Link to post
Share on other sites



Probably you should wait to be sure you get some data...

what about something like this?

; Start The UDP Services
;==============================================
UDPStartup()
; Register the cleanup function.
OnAutoItExitRegister("Cleanup")
; Bind to a SOCKET
;==============================================
$socket = UDPBind("127.0.0.1", 65532)
If @error <> 0 Then Exit
While 1
    $data=""
    $data = UDPRecv($socket, 50)
    If $data <> "" Then ;wait until we get some data
        ;my software send as "3" and it apears as this...
        If $data <> "0x696E74002C69000000000003" Then
            ExitLoop ;if not expected data exit
        EndIf
    EndIf
    sleep(1000)
WEnd
MsgBox("error","",1)
Func Cleanup()
    UDPCloseSocket($socket)
    UDPShutdown()
EndFunc

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
Sign in to follow this  
Followers 0

  • Similar Content

    • Turtlix21
      By Turtlix21
      I've a problem with receiving data on my PC by TCP and UDP. I can send data to another computer, but can't receive it.
      I'm not shure where is the problem (on PC or on "another comupers")
      This is client code:
      ;TCP client TCPStartup() $socket = TCPConnect("192.168.0.18", 7777) ;try to connect to server and save number of socket If $socket = -1 Then ;if $socket = -1 then error MsgBox(16, "Error:", "Can't connect to server") EndIf $sendedBytes = TCPSend($socket, "nothing here :)") ;send message to connected socket If $sendedBytes = 0 Then ;if receiving data TCPSend(...) = 0 then error MsgBox(16, "Error", "Can't send message") EndIf TCPCloseSocket($socket) TCPShutdown() and server code:
      ;TCP server TCPStartup() $mainsocket = TCPListen("192.168.0.18", 7777) ;making main receiving socket While 1 ;receiving loop $acceptedSocket = TCPAccept($mainsocket) ;possible connection to accept If $acceptedSocket <> -1 Then $receivedData = TCPRecv($acceptedSocket, 1024) ;if main socket is connected then receive message MsgBox(64, "Received message!", "Message: " & $receivedData) TCPCloseSocket($acceptedSocket) ;close open connecion EndIf WEnd TCPShutdown()  
      When server is on PC I can't receive any messages from any other computers.
      When client is on PC I can receive messages on any another computer.
      I tried to turn off antiviruses and windows firewall but it did't change anything
       
      EDIT:
      Error code from client from TCPConnect is 10060 (connection time out) and from TCPSend: 10038
      I've found something about 10060 error code, Microsoft says "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."
      So it means that the problem is with time of response but it makes no sense couse "another computer" is Virtual Machine with bridge internet connection from PC (pings beetwen PC  and VM are lower than 1ms.
      About 10038 error code microsoft says that this is problem with socket and it actually makes sense.
       
    • j0kky
      By j0kky
      Hi guysssss,
      have you ever heard of STUN?! No?
      When you are under a NAT and you try to connect to an online server, you make the request using an internal port and your local IP.
      But when your request arrives to the router, it uses its own port list and it enstablishes the connection to the final server using a different port (which has a different port number, but it is associated to your internal port) and the public (external) IP. So, the server responds to your request using the couple external IP\port assigned by the router.
      Well, STUN is a protocol that permits you to know your external IP but, more interesting, your external port associated to your internal port.
      But, which is the point?
      Client/Server connections don't require to know these informations, but what about P2P connection?
      STUN UDF is the second step (the first was my winsock UDF, which is used in this script) to UDP Hole Punching technique:
      Here you are the function:
      ; #FUNCTION# ======================================================================================================================== ; Name...........: _STUN ; Description ...: Makes a STUN request and processes the response ; Syntax.........: _STUN($iLocalPort, $iStunServer = "", $iStunPort = "") ; Parameters ....: $iLocalPort - The local port to be tested ; |1 : 65535 ; $iStunServer - name of the STUN server [Default = ""] ; $iStunPort - STUN server port, used only if $iStunServer <> "" ; |1 : 65535 - [Default = 3478] ; Return values .: On success it returns an array: ; |[0] - The external IP address ; |[1] - The external port ; On failure it returns -1 and sets @error to non zero: ; |-1 - internal error ; |-2 - missing DLL (Ws2_32.dll) ; |-3 - Unable to connect to internet ; |-4 - $iLocalPort is not a valid port ; |-5 - can't bind to $iLocalPort, try a different port ; |-6 - problem with servers ; Remarks .......: This function is used by a client to know which external port/IP correspond to the indicated internal port. ; By default it is used a STUN server list composed by: ; stun.l.google.com:19302, stun1.l.google.com:19302, stun.ekiga.net:3478, stun.ideasip.com:3478, stun.schlund.de:3478 ; If $iStunServer is indicated, the first element of the list is replaced by $iStunServer:$iStunPort ; Author ........: j0kky ; Modified ......: 1.0.0 ; Links .........: STUN RFC 5389: https://tools.ietf.org/html/rfc5389 ; ==================================================================================================================================== #include "winsock.au3" Func _STUN($iLocalPort, $iStunServer = "", $iStunPort = "") $iLocalPort = Int($iLocalPort) If ($iLocalPort < 1) Or ($iLocalPort > 65535) Then Return SetError(-4, 0, -1) $iExtended = 0 If $iStunServer = Default Then $iStunServer = "" $iStunServer = String($iStunServer) If $iStunServer Then $iStunServer = StringRegExpReplace($iStunServer, "^http.?://", "") If StringRight($iStunServer, 1) = "/" Then $iStunServer = StringTrimRight($iStunServer, 1) If Not StringRegExp($iStunServer, ".+\..{2,}") Then $iStunServer = "" ; invalid parameter $iExtended = -1 EndIf EndIf $hWs2 = DllOpen("Ws2_32.dll") If @error Then Return SetError(-2, $iExtended, -1) $tHeader = DllStructCreate("ushort MessageType; ushort MessageLenght; ulong MagicCookie; byte TransactionID[12]") $aRet = DllCall($hWs2, "ushort", "htons", "ushort", 0x0001) If @error Then DllClose($hWs2) Return SetError(-1, $iExtended, -1) Else DllStructSetData($tHeader, "MessageType", $aRet[0]) ;MessageType EndIf DllStructSetData($tHeader, "MessageLenght", 0x0000) ;MessageLenght $aRet = DllCall($hWs2, "ulong", "htonl", "ulong", 0x2112A442) If @error Then DllClose($hWs2) Return SetError(-1, $iExtended, -1) Else DllStructSetData($tHeader, "MagicCookie", $aRet[0]) ;MagicCookie EndIf For $i = 1 To 12 DllStructSetData($tHeader, "TransactionID", Random(0x00, 0xff, 1), $i) ;TransactionID Next _UDPStartup() If @error Then DllClose($hWs2) Return SetError(-1, $iExtended, -1) EndIf $sLocalIP = _GetIPs() If @error Then _UDPShutdown() DllClose($hWs2) Return SetError(-3, $iExtended, -1) EndIf $sLocalIP = $sLocalIP[0] If $iStunServer Then $sFirstServer = $iStunServer If $iStunPort Then $nFirstPort = $iStunPort Else $nFirstPort = 3478 EndIf Else $sFirstServer = "stun.l.google.com" $nFirstPort = 19302 EndIf Local $aStunServer[5][2] = [[$sFirstServer, $nFirstPort], ["stun1.l.google.com", 19302], ["stun.ekiga.net", 3478], ["stun.ideasip.com", 3478], ["stun.schlund.de", 3478]] $nBindSocket = _UDPBind($sLocalIP, $iLocalPort) If @error Then Return SetError(-5, $iExtended, -1) For $j = 0 To 4 $iError = 0 $sServerName = $aStunServer[$j][0] $sServerIP = _TCPNameToIP($sServerName) If @error Then $iError = -6 If Not $iError Then ;RFC indicates that $nRcMaxValue should be equal to 7 and $nRm should be equal to 16, ;but, following those rules, if the server doesn't respond quickly, the script is blocked for more than 1 minute $tByteHeader = DllStructCreate("byte[" & DllStructGetSize($tHeader) & "]", DllStructGetPtr($tHeader)) Local $nRTO = 500, $hTime = TimerInit(), $nRTOTotal = 0, $nRc = 0, $nRcMaxValue = 2, $aRecv = "", $nRm = 2 Do If ($nRc < $nRcMaxValue) And (TimerDiff($hTime) >= $nRTOTotal) Then _UDPSendTo($sServerIP, $aStunServer[$j][1], DllStructGetData($tByteHeader, 1), $nBindSocket) If @error Then $iError = -1 $nRTOTotal += $nRTO * (2 ^ $nRc) $nRc += 1 If $nRc = $nRcMaxValue Then $hTime = TimerInit() EndIf $aRecv = _UDPRecvFrom($nBindSocket, 2048, 1) If @error Then $iError = -1 Sleep(100) Until ($aRecv <> -1) Or (($nRc = $nRcMaxValue) And (TimerDiff($hTime) >= $nRTO * $nRm)) If Not IsArray($aRecv) Then $iError = -1 EndIf If Not $iError Then $dResponse = $aRecv[0] $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 3, 2)) ;MessageLenght If @error Then $iError = -1 Else $nMessageLenght = $aRet[0] EndIf If Not ($nMessageLenght > 0) Then $iError = -6 EndIf If Not $iError Then $dResponse = BinaryMid($dResponse, 1, $nMessageLenght + 20) ;message lenght plus header size $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 1, 2)) ;MessageType If @error Then $iError = -1 Else $nMessageType = $aRet[0] If Not (($nMessageType = 0x0101) Or ($nMessageType = 0x0111)) Then $iError = -6 EndIf EndIf If Not $iError Then $nByteNumber = 1 If $nMessageType = 0x0101 Then ;Binding success response Do $iError = 0 $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 20 + $nByteNumber, 2)) ;Attribute Type If @error Then $iError = -1 Else $nAttributeType = $aRet[0] EndIf If Not $iError And (($nAttributeType = 0x0001) Or ($nAttributeType = 0x0020)) Then ;MAPPED-ADDRESS or XOR-MAPPED-ADDRESS $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 24 + $nByteNumber, 2)) ;Family If @error Then $iError = -1 Else $nFamily = $aRet[0] EndIf EndIf If Not $iError Then Local $aResult[2] If $nAttributeType = 0x0020 Then ;XOR-MAPPED-ADDRESS $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 26 + $nByteNumber, 2)) ;Port If @error Then $iError = -1 Else $aResult[1] = BitXOR($aRet[0], 0x2112) ;Xored with the most significant 16 bit of Magic Cookie EndIf If Not $iError Then If $nFamily = 0x0001 Then ;IPv4 $dNBOIP = BinaryMid($dResponse, 28 + $nByteNumber, 4) $dNBOCookie = Binary("0x" & Hex(0x2112A442)) $tNBOXoredIP = DllStructCreate("byte[4]") For $i = 1 To 4 DllStructSetData($tNBOXoredIP, 1, BitXOR(BinaryMid($dNBOIP, $i, 1), BinaryMid($dNBOCookie, $i, 1)), $i) Next $aRet = DllCall($hWs2, "ptr", "inet_ntoa", "ulong", Int(DllStructGetData($tNBOXoredIP, 1))) If @error Then $iError = -1 ElseIf $aRet[0] = Null Then $iError = -6 Else $aResult[0] = DllStructGetData(DllStructCreate("char[15]", $aRet[0]), 1) ;IP address xored with Magic Cookie EndIf Else ;IPv6 $dNBOIP = BinaryMid($dResponse, 28 + $nByteNumber, 16) $dNBOConcatenation = BinaryMid($dResponse, 5, 16) $tNBOXoredIP = DllStructCreate("byte[16]") For $i = 1 To 16 DllStructSetData($tNBOXoredIP, 1, BitXOR(BinaryMid($dNBOIP, $i, 1), BinaryMid($dNBOConcatenation, $i, 1)), $i) Next $tIP = DllStructCreate("char[46]") $aRet = DllCall($hWs2, "ptr", "inet_ntop", _ "int", 23, "ptr", DllStructGetPtr($tNBOXoredIP), "ptr", DllStructGetPtr($tIP), "ULONG_PTR", DllStructGetSize($tIP)) If @error Then $iError = -1 ElseIf $aRet[0] = Null Then $iError = -6 Else $aResult[0] = DllStructGetData($tIP, 1) ;IP address EndIf EndIf EndIf ExitLoop 2 ElseIf $nAttributeType = 0x0001 Then ;MAPPED-ADDRESS $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 26 + $nByteNumber, 2)) ;Port If @error Then $iError = -1 Else $aResult[1] = $aRet[0] EndIf If Not $iError Then If $nFamily = 0x0001 Then ;IPv4 $aRet = DllCall($hWs2, "ptr", "inet_ntoa", "ulong", BinaryMid($dResponse, 28 + $nByteNumber, 4)) If @error Then $iError = -1 ElseIf $aRet[0] = Null Then $iError = -6 Else $aResult[0] = DllStructGetData(DllStructCreate("char[15]", $aRet[0]), 1) ;IP address EndIf Else ;IPv6 $tNBOIP = DllStructCreate("byte[16]") DllStructSetData($tNBOIP, 1, BinaryMid($dResponse, 28 + $nByteNumber, 16)) $tIP = DllStructCreate("char[46]") $aRet = DllCall($hWs2, "ptr", "inet_ntop", _ "int", 23, "ptr", DllStructGetPtr($tNBOIP), "ptr", DllStructGetPtr($tIP), "ULONG_PTR", DllStructGetSize($tIP)) If @error Then $iError = -1 ElseIf $aRet[0] = Null Then $iError = -6 Else $aResult[0] = DllStructGetData($tIP, 1) ;IP address EndIf EndIf EndIf ExitLoop 2 Else $aRet = DllCall($hWs2, "ushort", "ntohs", "ushort", BinaryMid($dResponse, 22 + $nByteNumber, 2)) ;Attribute Lenght If @error Then $iError = -1 Else $nAttributeLenght = $aRet[0] If Not (Mod($nAttributeLenght, 4) = 0) Then $nAttributeLenght += 4 - Mod($nAttributeLenght, 4) ;padding $nByteNumber += 4 + $nAttributeLenght ;TLV EndIf EndIf EndIf Until $nByteNumber > $nMessageLenght Else ;0x0111 = Binding error response $iError = -6 EndIf EndIf Next _UDPCloseSocket($nBindSocket) _UDPShutdown() DllClose($hWs2) If $iError Then $aResult = -1 If $iStunServer And ($iStunServer <> $sServerName) Then $iExtended = -2 Return SetError($iError, $iExtended, $aResult) EndFunc ;==>_STUN  
      Please test it (especially if you have an IPv6 interface) and report every bug you can try
       
      STUN.zip
    • topten
      By topten
      Hi I have an idea of creating a parental filter (freeware) , which will be protecting children from navigating to adult websites.  I want to ask, what is your opinion, how to do it best way?
      How to catch the traffic from the very beginning?
      For example if a user is starting IE or Firefox, or if he has some alternate BLABLA-browser - how can I catch the url before actual navigation to website, so that my script could first check if the website is ok, and then if it decides that the website is not ok, just block connection to this IP.
       
      Looking forward to your opinions, Great thanx in advance!
    • AoRaToS
      By AoRaToS
      I started working on this program in the summer then I stopped cause I faced some problems I couldn't overcome back then. Now that I've practiced more and have become a better scripter/programmer I'm releasing the program to the public to get some opinions. I know it's not a new concept but it's the first program I started besides some small stuff I did just for practice! I won't post the source code yet because it's still under construction, although I'm sure I've posted early stages of the code with bugs in the past in some topic...
      What I wanted was a simple, small, serverless program that would work without installation cause I wanted it for where I work, so I ended up with this!
       
      I have attached some images of various versions, also visit the forum thread.
       
      The package includes s!mpL3 LAN Messenger, the License Agreement and the change log.
       
      Current version 2.9.8.8! [30/09/2015]
       
      Check the Change Log below!
       
       
      http://www.autoitscript.com/forum/index.php?showtopic=88782
       
       
       
      Read the license before using this software.
       
    • shaggy89
      By shaggy89
      Hi all,
      Im hoping some could help me out.
      I'm using an IM client that sends messages via UDP.
      I was wondering is there a way I could make a button with a pre canned message to send to all online users automatically E.g "about to get coffee place your oder" send to all online
      Saves sending to one person at a time.
       
      Cheers
      Shaggy
       
      Edit ::::
       
      After looking into it more,  there are scripts on the forum that do the job i need all i have to do edit them to my needs
       
      Thanks anyways