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  • Send SYN packet in C#?

    - by Petr
    Hi, I am wondering whether it is even possible or I cannot do such a raw socket manipulation? If so, how can I try it? I am not trying to do this old DoS attack, just curious how to send it thru C#. Thanks

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  • HttpWebRequest and BindIPEndPointDelegate getting socket exception

    - by Evgeny Gavrin
    I've got c# code running on a computer with multiple network interfaces, and the following code to select an IP address for a HttpWebRequest to bind ServicePoint: HttpWebRequest request = (HttpWebRequest)WebRequest.Create(remoteFilename); request.KeepAlive = false; request.ServicePoint.BindIPEndPointDelegate = delegate( ServicePoint servicePoint, IPEndPoint remoteEndPoint, int retryCount) { return new IPEndPoint(IPAddress.Parse(ipAddr), 0); }; But it works only for one of the available network interfaces. Trying to access remote server through others throws an exception: System.Net.WebException: Unable to connect to the remote server --- System.Net.Sockets.SocketException: A socket operation was attempted to an unreachable network How can it be solved?

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  • Let other computer view my localhost over a network...

    - by Smickie
    Hi, I have apache and what not running on my local machine (mac), there also another mac on the local network. How does this other machine access my localhost? For example I have a local website at example.local.net in my vhost. How can another computer on the network navigate to this site? Cheers!

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  • NFS to NFS mount

    - by dude
    I have a machine that I need to bridge NFS files to. Can I mount an NFS directory on machine2 from machine1 and then mount the mounted NFS directory on machine2 on machine3 via NFS? Do you see any problems with that? I am basically bridging some subnet domains this way, in a certain fashion. My development machine is on a different and separate (unbridged) than where I would like to use the files, and I would like this machine1(dev machine) - machine2(passthrough machine) - machine3(test machine) connection. And no there is no way to move the test machine as it's a chassis :) and it's two buildings away.

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  • Facebook connect displaying invite friends dialog and closing on completion

    - by Dougnukem
    I'm trying to create a Facebook Connect application that displays a friend invite dialog within the page using Facebook's Javascript API (through a FBMLPopupDialog). The trouble is to display a friend invite dialog you use a multi-friend form which requires an action="url" attribute that represents the URL to redirect your page to when the user completes or skips the form. The problem is that I want to just close the FBMLPopupDialog (the same behavior as if the user just hit the 'X' button on the popup dialog). The best I can do is redirect the user back to the page they were on basically a reload but they lose all AJAX/Flash application state. I'm wondering if any Facebook Connect developers have run into this issue and have a good way to simply display a friend invite "lightbox" dialog within their website where they don't want to "refresh" or "redirect" when the user finishes. The facebook connect JS API provides a FB.Connect.inviteConnectUsers, which provides a nice dialog but only connects existing users of your application who also have a Facebook account and haven't connected. http://bugs.developers.facebook.com/show%5Fbug.cgi?id=4916 function fb_inviteFriends() { //Invite users log("Inviting users..."); FB.Connect.requireSession( function() { //Connect succes var uid = FB.Facebook.apiClient.get_session().uid; log('FB CONNECT SUCCESS: ' + uid); //Invite users log("Inviting users..."); //Update server with connected account updateAccountFacebookUID(); var fbml = fb_getInviteFBML() ; var dialog = new FB.UI. FBMLPopupDialog("Weblings Invite", fbml) ; //dialog.setFBMLContent(fbml); dialog.setContentWidth(650); dialog.setContentHeight(450); dialog.show(); }, //Connect cancelled function() { //User cancelled the connect log("FB Connect cancelled:"); } ); } function fb_getInviteFBML() { var uid = FB.Facebook.apiClient.get_session().uid; var fbml = ""; fbml = '<fb:fbml>\n' + '<fb:request-form\n'+ //Redirect back to this page ' action="'+ document.location +'"\n'+ ' method="POST"\n'+ ' invite="true"\n'+ ' type="Weblings Invite"\n' + ' content="I need your help to discover all the Weblings and save the Internet! WebWars: Weblings is a cool new game where we can collect fantastic creatures while surfing our favorite websites. Come find the missing Weblings with me!'+ //Callback the server with the appropriate Webwars Account URL ' <fb:req-choice url=\''+ WebwarsFB.WebwarsAccountServer +'/SplashPage.aspx?action=ref&reftype=Facebook' label=\'Check out WebWars: Weblings\' />"\n'+ '>\n'+ ' <fb:multi-friend-selector\n'+ ' rows="2"\n'+ ' cols="4"\n'+ ' bypass="Cancel"\n'+ ' showborder="false"\n'+ ' actiontext="Use this form to invite your friends to connect with WebWars: Weblings."/>\n'+ ' </fb:request-form>'+ ' </fb:fbml>'; return fbml; }

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  • Delphi: Get MAC of Router

    - by Daniel Marschall
    Hello, I am using Delphi and I want to determinate the physical MAC address of a network device in my network, in this case the Router itself. My code: var idsnmp: tidsnmp; val:string; begin idsnmp := tidsnmp.create; try idsnmp.QuickSend('.1.3.6.1.2.1.4.22.1.2', 'public', '10.0.0.1', val); showmessage(val); finally idsnmp.free; end; end; where 10.0.0.1 is my router. Alas, QuickSend does always send "Connection reset by peer #10054". I tried to modify the MIB-OID and I also tried the IP 127.0.0.1 which connection should never fail. I did not find any useable Tutorials about TIdSNMP at Google. :-( Regards Daniel Marschall

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  • Android: How to obtain Mac Address of WiFi Network Interface?

    - by Gubatron
    It seems the java.net.NetworkInterface implementation of android does not have a byte[] getHardwareAddress() method http://developer.android.com/reference/java/net/NetworkInterface.html I've found several forums of people trying to do this with no definitive answer, I need to get a somewhat cross-device UUID, so I can't rely on phone numbers or in ANDROID_ID (which can be overwritten and which I think depends on the user having a google account) http://developer.android.com/reference/android/provider/Settings.Secure.html#ANDROID_ID In linux you can use ifconfig or read from /proc/net/arp and you can easily get the Hardware address. Is there a file in android that I can read? There has to be a way to get this address since it's shown in the "Settings About Phone Status" of the phone.

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  • Access virtualhosts over LAN (Also in xpmode (Virtual PC))

    - by Pheter
    Hi, I am running Wamp on my computer (the host). I have set up several virtualhosts in apache and they are working fine when I access them from the same computer (host). I have installed Windows XPMode on my computer (which is running windows 7). XPMode (which uses Virtual PC) is set up to use a NAT network. The network in XPMode is working fine, and I can access the host PC via the IP address 192.168.1.5, just as I would if I was using any physical computer on the same network. I can view all the web pages at 192.168.1.5 and it's subdirectories. However, I cannot access any of the subdomains that are configured in the virtualhosts of the host computer. How can I access the subdomains? I don't think that the fact that I am using XPMode and am using a virtualized OS has anything to do with it, but I thought that it was worth mentioning.

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  • [LAZARUS] Access Remote SQL Server Database on WinCE programming

    - by Dels
    I'm programming using Lazarus (Freepascal IDE, Delphi Like), and i have a problem when i need to connect into a remote SQL Server database on the network. My question: Is there any way to connect to a remote SQLdb on Lazarus? What is required connector type for SQL Server 2005? Is there any ODBC driver available for Windows CE (Windows Mobile 5/6)? (If so, I could use TODBCConnection...) I already searched and asked on the Lazarus community forum but didn't get any response

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  • C# Sockets Buffer Overflow No Error

    - by Michael Covelli
    I have one thread that is receiving data over a socket like this: while (sock.Connected) { // Receive Data (Block if no data) recvn = sock.Receive(recvb, 0, rlen, SocketFlags.None, out serr); if (recvn <= 0 || sock == null || !sock.Connected) { OnError("Error In Receive, recvn <= 0 || sock == null || !sock.Connected"); return; } else if (serr != SocketError.Success) { OnError("Error In Receive, serr = " + serr); return; } // Copy Data Into Tokenizer tknz.Read(recvb, recvn); // Parse Data while (tknz.MoveToNext()) { try { ParseMessageAndRaiseEvents(tknz.Buffer(), tknz.Length); } catch (System.Exception ex) { string BadMessage = ByteArrayToStringClean(tknz.Buffer(), tknz.Length); string msg = string.Format("Exception in MDWrapper Parsing Message, Ex = {0}, Msg = {1}", ex.Message, BadMessage); OnError(msg); } } } And I kept seeing occasional errors in my parsing function indicating that the message wasn't valid. At first, I thought that my tokenizer class was broken. But after logging all the incoming bytes to the tokenizer, it turns out that the raw bytes in recvb weren't a valid message. I didn't think that corrupted data like this was possible with a tcp data stream. I figured it had to be some type of buffer overflow so I set sock.ReceiveBufferSize = 1024 * 1024 * 8; and the parsing error never, ever occurs in testing (it happens often enough to replicate if I don't change the ReceiveBufferSize). But my question is: why wasn't I seeing an exception or an error state or something if the socket's internal buffer was overflowing before I changed this buffer size?

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  • java.net.SocketException: Connection reset

    - by Darryl
    I am getting the following error trying to read from a socket. I'm doing a readInt() on that InputStream, and I am getting this error. Perusing the documentation this suggests that the client part of the connection closed the connection. In this scenario, I am the server. I have access to the client log files and it is not closing the connection, and in fact its log files suggest I am closing the connection. So does anybody have an idea why this is happening? What else to check for? Does this arise when there are local resources that are perhaps reaching thresholds? Many thanks, Darryl

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  • Social Game Mechanics in Django

    - by oliland
    I want users to receive 'points' for completing various tasks in my application - ranging from tasks such as tagging objects to making friends. I havn't yet found a Django application that simplifies this. At the moment I'm thinking that the best way to accumulate points is that each user action creates the equivalent of a "stream item", and the points are calculated through counting the value of each action published to their stream. Obviously social game mechanics is a huge area with a lot of research going on at the moment. But from a development perspective what's the easiest way to get started? Am I on the wrong track or are there better / simpler ways?

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  • Brainstorming - MIDI over LAN

    - by Hunter Bridges
    I'm planning out a summer coding project for myself. I work with a lot of MIDI and have been researching it a lot. I know it's an old technology, but it works with a lot of music hardware/software so in my eyes, it's still viable. Anyway, I haven't ever worked with writing drivers or anything, so I don't know where I would start with this. So, provided I have MIDI data already being sent over LAN to a server (I know how to do that part), what steps would it take for the server to channel those received messages to an emulated MIDI device, that could then be accessed in music software and so on? Also, what would it take to also send MIDI data back through the LAN to be received by the device that originally received the message? I'm not really looking for too specific a solution. Really I am just trying to come up with a game plan right now and I need to figure out where/what to research.

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  • Capturing network traffic in ruby - pcap related issues

    - by Acidburn2k
    What I need is to write very simple application, which would listen to network traffic, filter out some packets based on various layer 4/5 information and then dump those information into database. I am quite confused on which pcap gem/plugin should I use. The basic pcap implemention seem to be a bit outdated (no changes since 2001) and doesn't work properly. I also tried pcaprub, but I am not quite sure how to get around with this library. It seem to capture raw packets without te ability to actualy get any data out of the pcap dump. Do you have any advices on how can I realize this simple task? Thanks in advance. :-)

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  • Blackberry - Exception when sending SMS programmatically

    - by user213199
    Hello all, I am developing a Blackberry application. I am trying to send SMS programmatically to GSM number. I have gone through many queries and answers related to that and finally added the code for that as below. When the code tries to execute sending some text message to the particular mobile number, it doesn't send and throws exception as "blocking operation not permitted on event dispatch thread". So i created a separate background thread where i put the SMS code and running the code now. But still observing the same exception. Could someone please suggest what am i doing wrong (or) how to do that? class DummyFirst extends MainScreen { private Bitmap background; private VerticalFieldManager _container; private VerticalFieldManager mainVerticalManager; private HorizontalFieldManager horizontalFldManager; private BackGroundThread _thread; CustomControl buttonControl1; public DummyFirst() { super(); LabelField appTitle = new LabelField("Dummy App"); setTitle(appTitle); background = Bitmap.getBitmapResource("HomeBack.png"); _container = new VerticalFieldManager(Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void paint(Graphics g) { // Instead of these next two lines, draw your bitmap int y = DummyFirst.this.getMainManager() .getVerticalScroll(); g.clear(); g.drawBitmap(0, 0, background.getWidth(), background .getHeight(), background, 0, 0); super.paint(g); } protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; mainVerticalManager = new VerticalFieldManager( Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) { protected void sublayout(int maxWidth, int maxHeight) { int width = background.getWidth(); int height = background.getHeight(); super.sublayout(width, height); setExtent(width, height); } }; HorizontalFieldManager horizontalFldManager = new HorizontalFieldManager(Manager.USE_ALL_WIDTH); buttonControl1 = new CustomControl("Send", ButtonField.CONSUME_CLICK, 83, 15); horizontalFldManager.add(buttonControl1); this.setStatus(horizontalFldManager); FieldListener listner = new FieldListener(); buttonControl1.setChangeListener(listner); _container.add(mainVerticalManager); this.add(_container); } class FieldListener implements FieldChangeListener { public void fieldChanged(Field f, int context) { if (f == buttonControl1) { _thread = new BackGroundThread(); _thread.start(); } } } private class BackGroundThread extends Thread { public BackGroundThread() { /*** initialize parameters in constructor *****/ } public void run() { // UiApplication.getUiApplication().invokeLater(new Runnable() UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { try { MessageConnection msgConn = (MessageConnection) Connector .open("sms://:0"); Message msg = msgConn .newMessage( MessageConnection.TEXT_MESSAGE); TextMessage txtMsg = (TextMessage) msg; String msgAdr = "sms://+919861348735"; txtMsg.setAddress(msgAdr); txtMsg.setPayloadText("Test Message"); // here exception is thrown msgConn.send(txtMsg); System.out.println("Sending" + " SMS success !!!"); } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); } } // run }); } } public boolean onClose() { System.out.println("close event called, request to be" + " in the backgroud...."); UiApplication.getUiApplication().requestBackground(); return true; } } I resolved this issue by creating a separate thread and then not using Port etc. Here it is: SMSThread smsthread = new SMSThread("Some message",mobNumber); smsthread.start(); class SMSThread extends Thread { Thread myThread; MessageConnection msgConn; String message; String mobilenumber; public SMSThread( String textMsg, String mobileNumber ) { message = textMsg; mobilenumber = mobileNumber; } public void run() { try { msgConn = (MessageConnection) Connector.open("sms://+"+ mobilenumber); TextMessage text = (TextMessage) msgConn.newMessage(MessageConnection.TEXT_MESSAGE); text.setPayloadText(message); msgConn.send(text); msgConn.close(); } catch (Exception e) { System.out.println("Exception: " + e); } } }

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  • VirtualBox guest OS accessing local server on host OS.

    - by Maxim
    Hi, On my Ubuntu HOST I have my local webserver. I installed VirtualBox and Debian as a GUEST. I would like Debian guest to be able to hit my webserver running on my Ubuntu host (for example, I just type http://localhost:8080/ in the browser under Debian). How can this be done? Thanks in advance.

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  • how to send classes defined in .proto (protocol-buffers) over a socket

    - by make
    Hi, I am trying to send a proto over a socket, but i am getting segmentation error. Could someone please help and tell me what is wrong with this example? file.proto message data{ required string x1 = 1; required uint32 x2 = 2; required float x3 = 3; } client.cpp ... // class defined in proto data data_snd; data data_rec; char *y1 = "operation1"; uint32_t y2 = 123 ; float y3 = 3.14; // assigning data to send() data_snd.set_x1(y1); data_snd.set_x2(y2); data_snd.set_x3(y3); //sending data to the server if (send(socket, &data_snd, sizeof(data_snd), 0) < 0) { cerr << "send() failed" ; exit(1); } //receiving data from the client if (recv(socket, &data_rec, sizeof(data_rec), 0) < 0) { cerr << "recv() failed"; exit(1); } //printing received data cout << data_rec.x1() << "\n"; cout << data_rec.x2() << "\n"; cout << data_rec.x3() << "\n"; ... server.cpp ... //receiving data from the client if (recv(socket, &data_rec, sizeof(data_rec), 0) < 0) { cerr << "recv() failed"; exit(1); } //printing received data cout << data_rec.x1() << "\n"; cout << data_rec.x2() << "\n"; cout << data_rec.x3() << "\n"; // assigning data to send() data_snd.set_x1(data_rec.x1()); data_snd.set_x2(data_rec.x2()); data_snd.set_x3(data_rec.x3()); //sending data to the server if (send(socket, &data_snd, sizeof(data_snd), 0) < 0) { cerr << "send() failed" ; exit(1); } ... Thanks for help and replies-

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  • starting smartcard programming

    - by hyperboreean
    How could one get started with smartcards programming? I am asking here about all the toolkit he needs in order to get started: books, tutorials, hardware etc. I am planning in playing around with a couple of smartcards programmers and I am pretty new to this field. Edit: I am mostly interested in programmers that play nice with Unix-like operating systems. Also, I am not sure how this works ... but I would like to program them in C/C++

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  • book "Programming Role Playing Games with DirectX 2nd edition" and newer DirectX api

    - by numerical25
    I got the book "Programming Role Playing Games with DirectX 2nd edition" and I notice there are things in the book that are now considered deprecated. There is a whole Section on DirectPlay. And as much as I would like to avoid this section, I am afraid it might screw up the entire engine he is trying to build. So I was just curious to know even though DirectPlay is considered deprecated by XNA, and directX10. Is it possible to use it still in DirectX 9 ??

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