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  • Wireshark Plugin: Dissecting Payloads With Multiple Packets Per UDP Frame

    - by John Dibling
    I am writing a Wireshark plugin to dissect a protocol that places multiple application-level packets in a single UDP frame. There is no enclosing protocol that indicates how many packets there are in the frame. So essentially, the payload coming down the wire will look like this: uint64 sequence1 uint64 data1 uint8 flags1 uint64 sequence2 uint64 data2 uint8 flags2 : : : uint64 sequence_n uint64 data_n uint8 flags_n In my server code that actually processes this information, I simply loop through the frame until I reach the end. In looking through the plugins included with the wireshark source code, I didn't see any protocols that did any looping like this. I know other protocols pack multiple payloads per frame. What is the cannonical or standard way to handle protocols like this in a Wireshark dissector?

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  • Replace method doesn't work properly

    - by John Smith
    Hello I have a string and when i try to use replace method in for loop it doesn't work String phrase="hello friend"; String[] wordds=phrase.split(" "); String newPhrase="sup friendhello weirdo"; for (int g=0;g<2;g++) { finalPhrase+=newPhrase.replace(wordds[g],"");} } System.out.println(finalPhrase) It prints out "sup hello weirdo" and i expect it to print "sup weirdo". What am i doing wrong?

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  • Resque: Slow worker startup and Forking

    - by David John
    I'm currently moving my application from a Linode setup to EC2. Redis is currently installed on a remote instance with various worker instances interacting with the queue. Thats all going fantastic. My problem is with the amount of time it takes for a worker to be 'instantiated' and slow forking. Starting a worker will usually take between 30 seconds and a minute(from god.rb starting the worker rake task and the worker actively starting work on the queue). I could live with that, but I've not experienced such a wait time on my current Linode production box so I believe its one of my symptoms to a bigger problem. Next issue is that jobs that took a second or less in my previous environment now seem to take about 5 to 10 times longer.. I'm assuming this must be some sort of issue with my Ubuntu install on EC2? One notable difference is that I'm running REE 1.8.7-2010.01 in my new setup, and REE 1.8.6 on the old Linode boxes. Anyone else experienced these issues?

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  • How to package AIR 2 native installer?

    - by John Isaacks
    I have made an AIR 2.0 app that uses NativeProcess so it needs to be packaged as a native installer (.exe) rather than a .air file. I first tried using Package Assistant but I kept getting an error telling me it cannot load keystore file. so I tried using the command line I use: pathToAirSDK>adt -args but I get an error telling me that "adt" is not a known command so I try: pathToAirSDK>adt.jar -args but I get a pop up telling me windows does not know how to open adt.jar files. Has anyone packaged a native installer for an AIR 2.0 app? How did you do it? edit forgot to mention I am doing this in windows using the windows command line.

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  • How to load images and fragments dynamically in LiveCycle Designer forms?

    - by John
    Hi there. I've created a couple of shared templates (.xdp) which will be shared among several clients. Obviously, each client has their own logo and I'd like to set the logo upon form generation. I've managed to change the logo dynamically although I'm not sure if my approach is good. In the xml datasource I've got this element: <ClientID>SomeNumber</ClientId> In the form itself I set the image href with this javascript code: SomeHiddenTextField::calculate HeaderLogo.value.image.href = $record.ClientID + "_logo.jpg"; I've got the logos stored on the server in the same folder as the shared templates. Is this an alright approach to load logos dynamically? I've been trying to achieve the same dynamic behaviour with each client's footer fragment, but I have been unable to figure out how to load these on demand. I could make each footer fragment in to an image but I'd like to avoid it if possible.

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  • Microsoft leaning support for VS2010

    - by John
    OK, I am a big fan of WPF, and while it is large area to fully understand, Microsoft has been great in posting loads of training video at http://windowsclient.net/learn/videos_wpf.aspx However with the release of 2010 it all seams to have gone very quite. I expected a lot of the support to be updated for 2010 and I also expected a lot of new videos on the best way to use the new features in 2010. Currently I find myself working through videos based on 2008 (or even 2005) and trying to apply them to 2010. Don't get me wrong it not that I mind doing this, it just that I fear I may be learning methods which have better or different solutions in 2010. It is just me expecting too much of Microsoft, or have I missed out on a new website?

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  • close android open home widget

    - by John
    Hi, I have android open home running on my google android phone. I'd like to close it but I can't see how to. I don't want to un-install it just close it. I've tried turning my phone off and on but it boots up with it loaded. Anyone have any ideas? Thanks

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  • REGEX to extract word connected to nearest semicolon?

    - by John Kaybern
    I'm attempting to extract a series of data values from a text file. The values are in the format: <MODIFIER NAME1 VALUE; MODIFIER NAME2 VALUE;> For the purposes of the current task that I have, I only care about extracting the VALUE that is situated next to each semicolon. What would the REGEX command look like that would isolate each of these VALUES (preferably so that I backreference all values in the replacement part of my processing.) I believe that ^(.*?); is somehow used, but I'm not seeing how to isolate only the word that is attached to the semicolon in a group for backreference use. Thanks!

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  • How to install older Android SDK in Eclipse

    - by John Brunner
    I'm working at the moment at a simple app in eclipse for android. Just receiving and sending data, and using the camera API. I've set the minSDKversion to 8, because I think that has the widest user base. But at the beginning of the project eclipse was asking me which target SDK version I would use, and because I had just one installed (the latest 4.0.3) I've took this. Now I'm asking me if it wouldn't be wiser to install a lower SDK, like Android 2.2, because it would be not that big (compared to the 4.0.3) and my app would not have included all the fancy new features, which are not used in any way?! Or is this complete nonsense I'm talking here, and just should take my 4.0.3 SDK? When not, how can I install a lower version? Help -> SDK Manager is not showing old SDKs...

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  • R: how can I concatenate a list?

    - by John
    I'm trying to produce a single variable which is a concatenation of two chars e.g to go from "p30s4" "p28s4" to "p30s4 p28s4". I've tried cat and paste as shown below. Both return empty variables. What am I doing wrong? > blah = c("p30s4","p28s4") > blah [1] "p30s4" "p28s4" > foo = cat(blah) p30s4 p28s4 > foo NULL > foo = paste(cat(blah)) p30s4 p28s4 > foo character(0)

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  • Polling servers at the same port - Threads and Java

    - by John
    Hi there. I'm currently busy working on an IP ban tool for the early versions of Call of Duty 1. (Apparently such a feature wasn't implemented in these versions). I've finished a single threaded application but it won't perform well enough for multiple servers, which is why I am trying to implement threading. Right now, each server has its own thread. I have a Networking class, which has a method; "GetStatus" -- this method is synchronized. This method uses a DatagramSocket to communicate with the server. Since this method is static and synchronized, I shouldn't get in trouble and receive a whole bunch of "Address already in use" exceptions. However, I have a second method named "SendMessage". This method is supposed to send a message to the server. How can I make sure "SendMessage" cannot be invoked when there's already a thread running in "GetStatus", and the other way around? If I make both synchronized, I will still get in trouble if Thread A is opening a socket on Port 99999 and invoking "SendMessage" while Thread B is opening a socket on the same port and invoking "GetStatus"? (Game servers are usually hosted on the same ports) I guess what I am really after is a way to make an entire class synchronized, so that only one method can be invoked and run at a time by a single thread. Hope that what I am trying to accomplish/avoid is made clear in this text. Any help is greatly appreciated.

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  • Opening response stream in silverlight

    - by John Maloney
    Hello, I am attempting to return a image from a server using Silverlight 3. The server returns the Response stream like this: context.Response.ContentType = imageFactory.ContentType imgStream.WriteTo(context.Response.OutputStream) imgStream.Close() context.Response.End() On the Silverlight client I am handling the stream like: Dim request As HttpWebRequest = result.AsyncState Dim response As HttpWebResponse = request.EndGetResponse(result) Dim responseStream As IO.Stream = response.GetResponseStream() I want to take that stream and open the browsers save dialog, one option I have explored is using the Html.Window.Navigate(New Uri("image url")) and this opened the correct browser default dialog but it is not an option because I need to send extended information(e.g. XML) to the server through the HttpRequest.Headers.Item and the Navigate doesn't allow this. How can I take a Response Stream and force the default browser Save dialog to appear from the Silverlight Application without using the Html.Window.Navigate(New Uri("image url"))?

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  • Replicating iPhone Calendar View Lame?

    - by John Wright
    I am building an iPhone app that will need to display info primarily in a calendar view. Users will need to be able to search for entries and view them by day, month or in a list view. It seems like the built-in calendar type interface is ideal for my app. So I could build a similar calendar with 3 buttons at the bottom for list/day/month view as well as a button for today, in short a very similar interface to the built in iPhone calendar with different colors primarily. However, if I replicate it am I a) a lame copycat for replicating the built-in interface or smart for using a well-known iPhone metaphor and b) in danger of having my app rejected?

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  • replace values in form.data when form fails validation

    - by John
    Hi I have a form field which requires a json object as its value when it is rendered. When the form is submitted it returns a comma seperated string of ids as its value (not a json string). however if the form does not validate i want to turn this string of ids back into a json string so it will display properly (is uses jquery to render the json object correctly). how would i do this? I was thinking of overwriting the form.clean method but when I tried to change self.data['fieldname'] I got the error 'This QueryDict instance is immutable' and when i tried to change self.cleaned_data['fieldname'] it didn't make a difference to the value of the field. Thanks

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  • Jquery to hightlight elements in a list

    - by John
    Hi I have a ol list: <ol> <li class="group1">item 1</li> <li class="group1">item 2</li> <li class="group2"> item 3</li> <li class="group3">item 4</li> <li class="group1">item 5</li> <li class="group3"> item 6</li> <ol> and a set of checkboxes which correspond to the class names <input type="checkbox" value="group1" />group 1 <input type="checkbox" value="group2" />group 2 <input type="checkbox" value="group3" />group 3 What I want to happen is that when a user clicks on a checkbox to 'tick' it, any li rows which are not checked are fadedOut (change opacity) and then any rows which have the class which matches the value of the checkbox are highlighter (background colour changed to yellow). So for example if group 3 was clicked, item 4 and item 6 would be highlighted. Then if group 2 was clicked item 3 would be highlighted (item 4 and 6 would remain highlighted). If group 2 was un-ticked, item 3 would become faded out although item 4 and 6 would remain highlighted. The code I have at the moment is: $('input').click(function(){ input = $(this); classVal = "." + input.val(); elements = $(classVal ); if (input.is(':checked')) { elements.css("background-color", "#FFFF00"); } else { elements.css("background-color", ""); } }); This handles the highlighting but does not do the fading of the unchecked elements. I know I can change the opacity using css("opacity", 0.33) or fadeTo("slow", 0.33) but not sure how to handle this in the code and where to put it. If any of my other code can be tidied up also please let me know Thanks

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  • Change background colour of individual elements on the fly

    - by John
    Hi, Is there a way in CSS or JQuery where I can dynamically change the background of li tags so they get slightly lighter for each element until it gets to white. For example say I had a list of 10 li elements. The first would have a red (#ff0000) background, the next one would then be a lighter shade of red, and so on and so on until we got to the last one which would have a background of white (#FFFFFF) The list can be any length and i just want the background colour to go from one colour e.g. red to another colour e.g. white. My site uses JQuery so if I have to use that I don't mind. Thanks

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  • How can I have a web link perform an action in a specific desktop application?

    - by John
    The specific situation is I have a .zip file that I want to open with a certain application. However, I don't want all ZIP files associated with that application. I think the answer is that instead of saying, "download this zip file, and open it with application X" I could have the browser basically go well my desktop application to go fetch it on its own (the same way directives like itunes: mailto: or aim: do things like launch the itunes store, add buddies, etc). Thoughts?

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