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  • Posting comments to a wordpress-blog in Android

    - by Samuh
    I am working on a module that allows users to post comments on a blog published on Wordpress. I looked at the HTML source for Post-Comment-Form displayed at the bottom of a blog entry (Leave a Reply section). Using that as a reference, I translated it to Java using DefaultHTTPClient and BasicNameValuePairs and my code looks like: DefaultHttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://xycabz.wordpress.com/wp-comments-post.php"); httppost.setHeader("Content-type","application/x-www-form-urlencoded;charset=UTF-8"); List<NameValuePair> nvps = new ArrayList<NameValuePair>(); nvps.add(new BasicNameValuePair("author","abc")); nvps.add(new BasicNameValuePair("email","[email protected]")); nvps.add(new BasicNameValuePair("url","")); nvps.add(new BasicNameValuePair("comment","entiendamonos?")); nvps.add(new BasicNameValuePair("comment_post_ID","123")); //this was a hidden field and always set to 0 nvps.add(new BasicNameValuePair("comment_parent","0")); try { httppost.setEntity(new UrlEncodedFormEntity(nvps)); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } BasicResponseHandler handler = new BasicResponseHandler(); try { Log.e("OUTPUT",httpclient.execute(httppost,handler)); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } The above code works fine when I try it out on my blog. But when I try this on the actual blog, I get HTTP 302 Found (Redirect to temporary location) exceptions in the logs. The comments never make it to the blog page. Usually, when you post a comment(on the web page) you are taken back to the blog page that enlists all the comments. The URL I am getting in the redirects is the same. Questions: 1. Could this be a post-a-comment settings problem(perhaps something the original blog owner might have set)? 2. How should my HTTPClient handle 302 status code? Eventually, I just have to notify the user of success and failure and not actually take him to the comments page.

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  • jquery ajax call in onsubmit function is not working

    - by shilna mk
    I have form submission page add_sale.php and an ajax page ajx_check_sale.php.Ajax call is inthe onsubmit function.But ajax is not worikng.Anybody give any solution plz.. I have form submission page add_sale.php and an ajax page ajx_check_sale.php.Ajax call is inthe onsubmit function.But ajax is not worikng.Anybody give any solution plz.. add_sale.php function sale_credit(id) { var cust_name=$('#cust_name').val(); $.ajax({ type: "POST", url: 'ajx_typ1.php', data:'id='+id, success: function(msg) { $("#sale_type1").html(msg); } }); $.ajax({ type: "POST", url: 'ajx_typ3.php', data:'id='+id, success: function(msg) { $("#sale_type3").html(msg); } }); $.ajax({ type: "POST", url: 'ajx_typ2.php', data:'id='+id, success: function(msg) { $("#sale_type2").html(msg); } }); } function validate_form() { var cust_name= $('#cust_name').val(); var total= $('#total').val(); var sale_type= $('#sale_type').val(); if(sale_type=='return') { $.ajax({ type: "POST", url: 'ajx_check_sale.php', data:'cust_name='+cust_name + '&total=' + total, success: function(msg) { alert(msg); /*if(msg==0) { alert("Return is greater then sale"); return false; } */ } }); } } <form action="" method="post" name="adFrm" onSubmit="return validate_form()"> <select name="sale_type" style="width:130px;" id="sale_type" onchange="sale_credit(this.value)" > <option value="">Select</option> <option value="credit">Credit</option> <option value="payment">Payment</option> <option value="return">Return</option> </select> </form> ajx_check_sale.php require_once("codelibrary/inc/variables.php"); require_once("codelibrary/inc/functions.php"); echo $cust_name=$_POST['cust_name']; echo $return=$_POST['total']; $cus="select sum(total) as total_sum from customer where id='$cust_id'"; $cus2=mysql_query($cus); $fet=mysql_fetch_array($cus2); $total=$fet['total_sum']; if($return>$total) { $status=0; echo $status; } else { $status=1; echo $status; }

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  • Rails: AJAX Controller JS not firing...

    - by neezer
    I'm having an issue with one of my controller's AJAX functionality. Here's what I have: class PhotosController < ApplicationController # ... def create @photo = Photo.new(params[:photo]) @photo.image_content_type = MIME::Types.type_for(@photo.image_file_name).to_s @photo.image_width = Paperclip::Geometry.from_file(params[:photo][:image]).width.to_i @photo.image_height = Paperclip::Geometry.from_file(params[:photo][:image]).height.to_i @photo.save! respond_to do |format| format.js end end # ... end This is called through a POST request sent by this code: $(function() { // add photos link $('a.add-photos-link').colorbox({ overlayClose: false, onComplete: function() { wire_add_photo_modal(); } }); function wire_add_photo_modal() { <% session_key = ActionController::Base.session_options[:key] %> $('#upload_photo').uploadify({ uploader: '/swf/uploadify.swf', script: '/photos', cancelImg: '/images/buttons/cancel.png', buttonText: 'Upload Photo(s)', auto: true, queueID: 'queue', fileDataName: 'photo[image]', scriptData: { '<%= session_key %>': '<%= u cookies[session_key] %>', commit: 'Adding Photo', controller: 'photos', action: 'create', '_method': 'post', 'photo[gallery_id]': $('#gallery_id').val(), 'photo[user_id]': $('#user_id').val(), authenticity_token: encodeURIComponent('<%= u form_authenticity_token if protect_against_forgery? %>') }, multi: true }); } }); Finally, I have my response code in app/views/photos/create.js.erb: alert('photo added!'); My log file shows that the request was successful (the photo was successfully uploaded), and it even says that it rendered the create action, yet I never get the alert. My browser shows NO javascript errors. Here's the log AFTER a request from the above POST request is submitted: Processing PhotosController#create (for 127.0.0.1 at 2010-03-16 14:35:33) [POST] Parameters: {"Filename"=>"tumblr_kx74k06IuI1qzt6cxo1_400.jpg", "photo"=>{"user_id"=>"1", "image"=>#<File:/tmp/RackMultipart20100316-54303-7r2npu-0>}, "commit"=>"Adding Photo", "_edited_session"=>"edited", "folder"=>"/kakagiloon/", "authenticity_token"=>"edited", "action"=>"create", "_method"=>"post", "Upload"=>"Submit Query", "controller"=>"photos"} [paperclip] Saving attachments. [paperclip] saving /public/images/assets/kakagiloon/thumbnail/tumblr_kx74k06IuI1qzt6cxo1_400.jpg [paperclip] saving /public/images/assets/kakagiloon/profile/tumblr_kx74k06IuI1qzt6cxo1_400.jpg [paperclip] saving /public/images/assets/kakagiloon/original/tumblr_kx74k06IuI1qzt6cxo1_400.jpg Rendering photos/create Completed in 248ms (View: 1, DB: 6) | 200 OK [http://edited.local/photos] NOTE: I edited out all the SQL statements and I put "edited" in place of sensitive info. What gives? Why aren't I getting my alert();? Please let me know if you need anymore info to help me solve this issue! Thanks.

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  • Array Sorting Question for News System

    - by lemonpole
    Hello all. I'm currently stuck trying to figure out how to sort my array files. I have a simple news posting system that stores the content in seperate .dat files and then stores them in an array. I numbered the files so that my array can sort them from lowest number to greatest; however, I have run into a small problem. To begin here is some more information on my system so that you can understand it better. The function that gathers my files is: function getNewsList() { $fileList = array(); // Open the actual directory if($handle = opendir(ABSPATH . ADMIN . "data")) { // Read all file from the actual directory while($file = readdir($handle)) { if(!is_dir($file)) { $fileList[] = $file; } } } // Return the array. return $fileList; } On a seperate file is the programming that processes the news post. I didn't post that code for simplicity's sake but I will explain how the files are named. The files are numbered and the part of the post's title is used... for the numbering I get a count of the array and add "1" as an offset. I get the title of the post, encode it to make it file-name-friendly and limit the amount of text so by the end of it all I end up with: // Make the variable that names the file that will contain // the post. $filename = "00{$newnumrows}_{$snipEncode}"; When running print_r on the above function I get: Array ( [0] => 0010_Mira_mi_Soledad.dat [1] => 0011_WOah.dat [2] => 0012_Sinep.dat [3] => 0013_Living_in_Warfa.dat [4] => 0014_Hello.dat [5] => 001_AS.dat [6] => 002_ASASA.dat [7] => 003_SSASAS.dat ... [13] => 009_ASADADASADAFDAF.dat ) And this is how my content is displayed. For some reason according to the array sorting 0010 comes before 001...? Is there a way I can get my array to sort 001 before 0010?

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  • Getresponse not working after authentication

    - by Hazler
    For starters, here's my code: // Create a request using a URL that can receive a post. WebRequest request = WebRequest.Create("http://mydomain.com/cms/csharptest.php"); request.Credentials = new NetworkCredential("myUser", "myPass"); // Set the Method property of the request to POST. request.Method = "POST"; // Create POST data and convert it to a byte array. string postData = "name=PersonName&age=25"; byte[] byteArray = Encoding.UTF8.GetBytes(postData); // Set the ContentType property of the WebRequest. request.ContentType = "application/x-www-form-urlencoded"; // Set the ContentLength property of the WebRequest. request.ContentLength = byteArray.Length; // Get the request stream. Stream dataStream = request.GetRequestStream(); // Write the data to the request stream. dataStream.Write(byteArray, 0, byteArray.Length); // Close the Stream object. dataStream.Close(); // Get the response. HttpWebResponse response = (HttpWebResponse)request.GetResponse(); // Display the status. Console.WriteLine((response).StatusDescription); // Get the stream containing content returned by the server. dataStream = response.GetResponseStream(); // Open the stream using a StreamReader for easy access. StreamReader reader = new StreamReader(dataStream); // Read the content. string responseFromServer = reader.ReadToEnd(); // Display the content. Console.WriteLine(responseFromServer); // Clean up the streams. reader.Close(); dataStream.Close(); response.Close(); The directory cms/ requires authentication, but if I try running this same code somewhere, where authentication isn't needed, it works fine. The error (System.Net.WebException: The remote server returned an error: (403) Forbidden) occurs at HttpWebResponse response = (HttpWebResponse)request.GetResponse(); I have managed in reading data after authenticating, but not if I also send POST data. What's wrong with this?

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  • jQuery: load refuses to get dynamic content in IE6

    - by user260157
    jQuery refuses to load my dynamic content in IE6. All in FireFox & Safari works fine. Only IE6 is being a pain. When I try the a html with <p>Hello World</p> that works. Properly. But when loading a PHP it doesn't work! As you can see it's doing multiple things. <script type="text/javascript"> // When the document is ready set up our sortable with it's inherant function(s) $(document).ready(function() { // Sort list & amend in database function sortTableMenuAndReload() { var order = $('#menuList').sortable('serialize'); $.post("PLUGINS/SortableMenu/process-sortable.php",order); $("#menuList").load("PLUGINS/SortableMenu/sortableMenu_ajax.php"); } function sortTableOrder() { var order = $('#menuList').sortable('serialize'); $.post("PLUGINS/SortableMenu/process-sortable.php",order); } function sortTableOrderAndRemove(removeID) { $('#listItem_'+removeID).remove(); var order = $('#menuList').sortable('serialize'); $.post("PLUGINS/SortableMenu/process-sortable.php",order); $("#menuList").load("PLUGINS/SortableMenu/sortableMenu_ajax.php"); } $("#menuList > li > .remove").live('click', function () { var removeID = $(this).attr('id'); $.ajax({ type: 'post', url: 'PLUGINS/SortableMenu/removeLine.php', data: 'id='+removeID, success: sortTableOrderAndRemove(removeID) }); }); $("#menuList > li > .publish").live('click', function () { var publishID = $(this).attr('id'); $.ajax({ type: 'post', url: 'PLUGINS/SortableMenu/publishLine.php', data: 'id='+publishID, success: sortTableOrder }); }); $('#new_documents > li').draggable({ addClasses: false, helper:'clone', connectToSortable:'#menuList' }); $("#menuList").droppable({ addClasses: false, drop: function() { var clone = $("#menuList > li#newArticleTYPE1"); $(clone).attr("id","listItem_newArticleTYPE1"); } }); $("#menuList").sortable({ opacity: 0.6, handle : '.handle, .remove', update : sortTableMenuAndReload }); }); </script>

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  • -[NSConcreteMutableData release]: message sent to deallocated instance

    - by kamibutt
    Dear members, I am facing a problem of -[NSConcreteMutableData release]: message sent to deallocated instance, i have attached my sample code as well. - (IBAction)uploadImage { NSString *urlString = @"http://192.168.1.108/iphoneimages/uploadfile.php?userid=1&charid=23&msgid=3"; //if(FALSE) for (int i=0; i<[imgArray count]; i++) { // setting up the request object now NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:[NSURL URLWithString:urlString]]; [request setHTTPMethod:@"POST"]; /* add some header info now we always need a boundary when we post a file also we need to set the content type You might want to generate a random boundary.. this is just the same as my output from wireshark on a valid html post */ NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"]; NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary]; [request addValue:contentType forHTTPHeaderField: @"Content-Type"]; /* now lets create the body of the post */ NSMutableData *body = [[NSMutableData data] autorelease]; NSString *str = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile%d.jpg\"\r\n",i]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:str] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; NSData *imageData = UIImageJPEGRepresentation([imgArray objectAtIndex:i], 90); [body appendData:[NSData dataWithData:imageData]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; // setting the body of the post to the reqeust [request setHTTPBody:body]; // now lets make the connection to the web [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; //NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding]; //NSLog(@"%@",returnString); [imageData release]; [request release]; //[body release]; } } It successfully upload the images to the folder and there is no any error in the execution but when it complete it process and try to go back it give error -[NSConcreteMutableData release]: message sent to deallocated instance Please help me out. Thanks

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  • Dealing with C++ web views

    - by Jeffrey
    I'm working, as an hobby (before any one rage out of their mind, I'm just trying to study C++ regarding something I love: web. I'm not trying to reinvent your precious wheel, and I'm not trying to create the new web technology. I just have the time to go for it.), creating a web CGI C++ library. I'm at a pretty good point, but in the future I see one big problem: views. I'm used to the great <body><?php echo "Hey!"; ?></body> embedded php, but there's no such thing in C++, so I'm wondering: How would you deal with views? Would you create a simple find-replace-variable templating system and deal with thousands of partial views? For example: View view; view.load("header.html"); view.load("nav.html"); view.load("post_start.html"); for (int i = 0; i < 10; i++) { std::map<std::string, std::string> post; Post p(i); post = p.get(); view.load(post_view.html, post); // p is passed as argument and every `{% varname %}` in the html will be replaced with its value inside the map } view.load(post_end.html); view.load(footer); Would you create a simple templating system? So that we can deal with this C++ code: std::vector<std::map<std::string, std::string>> posts; Posts p; posts = p.getAll(); view.load(posts.html, posts); and then this HTML/TPL: <html> ... <body> <h2> Posts </h2> {% for (i = 0; i < 10; i++): %} <div class="post">...</div> {% endfor %} </body> </html> Is there any other way? What is the best way to do this? (And no, I don't think this is subjective question)

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  • How to pass multiple PHP variables to a jQuery function?

    - by jcpeden
    I'm working on a Wordpress plugin. I need to pass plugin directories (that can change depending on an individual's installation) to a jquery function. What is the best way of doing this? The version of the plugin that I can to work on had included all the javascript in the PHP file so the functions were parsed along with the rest of the content before being rendered in a browser. I'm looking at AJAX but I think it might be more complicated than I need. I can get away with just two variables in this case (directories, nothing set by the user). As I've read its good practice, I'm trying to keep the js and php separate. When the plugin initializes, it call the js file: //Wordpress calls the .js when the plugin loads wp_enqueue_script( 'wp-backitup-funtions', plugin_dir_url( __FILE__ ) . 'js/wp-backitup.js', array( 'jquery' ) ); Then I'm in the .js file and need to figure out how to generate the following variables: dir = '<?php echo content_url() ."/plugins"; ?>'; dir = '<?php echo content_url() ."/themes"; ?>'; dir = '<?php echo content_url() ."/uploads"; ?>'; And run the parse the following requests: xmlhttp.open("POST","<?php echo plugins_url() .'/wp-backitup/includes/wp-backitup-restore.php'); ?>",true); xmlhttp.open("POST","<?php echo plugins_url() .'/wp-backitup/includes/wp-backitup-start.php'); ?>",true); xmlhttp.open("POST","<?php echo plugins_url() .'/wp-backitup/wp-backitup-directory.php'); ?>",true); xmlhttp.open("POST","<?php echo plugins_url() .'/wp-backitup/wp-backitup-db.php'); ?>",true); window.location = "<?php echo plugins_url() .'/wp-backitup/backitup-project.zip'); ?>"; xmlhttp.open("POST","<?php echo plugins_url() .'/wp-backitup/wp-backitup-delete.php'); ?>",true); Content URL and Plugins URL differ only by /plugins/ so if I was hard pressed, I would only really need to make a single PHP request and then bring this into the JS.

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  • Using the jQuery UI Library in a MVC 3 Application to Build a Dialog Form

    - by ChrisD
    Using a simulated dialog window is a nice way to handle inline data editing. The jQuery UI has a UI widget for a dialog window that makes it easy to get up and running with it in your application. With the release of ASP.NET MVC 3, Microsoft included the jQuery UI scripts and files in the MVC 3 project templates for Visual Studio. With the release of the MVC 3 Tools Update, Microsoft implemented the inclusion of those with NuGet as packages. That means we can get up and running using the latest version of the jQuery UI with minimal effort. To the code! Another that might interested you about JQuery Mobile and ASP.NET MVC 3 with C#. If you are starting with a new MVC 3 application and have the Tools Update then you are a NuGet update and a <link> and <script> tag away from adding the jQuery UI to your project. If you are using an existing MVC project you can still get the jQuery UI library added to your project via NuGet and then add the link and script tags. Assuming that you have pulled down the latest version (at the time of this publish it was 1.8.13) you can add the following link and script tags to your <head> tag: < link href = "@Url.Content(" ~ / Content / themes / base / jquery . ui . all . css ")" rel = "Stylesheet" type = "text/css" /> < script src = "@Url.Content(" ~ / Scripts / jquery-ui-1 . 8 . 13 . min . js ")" type = "text/javascript" ></ script > The jQuery UI library relies upon the CSS scripts and some image files to handle rendering of its widgets (you can choose a different theme or role your own if you like). Adding these to the stock _Layout.cshtml file results in the following markup: <!DOCTYPE html> < html > < head >     < meta charset = "utf-8" />     < title > @ViewBag.Title </ title >     < link href = "@Url.Content(" ~ / Content / Site . css ")" rel = "stylesheet" type = "text/css" />     <link href="@Url.Content("~/Content/themes/base/jquery.ui.all.css")" rel="Stylesheet" type="text/css" />     <script src="@Url.Content("~/Scripts/jquery-1.5.1.min.js")" type="text/javascript"></script>     <script src="@Url.Content("~/Scripts/modernizr-1.7.min . js ")" type = "text/javascript" ></ script >     < script src = "@Url.Content(" ~ / Scripts / jquery-ui-1 . 8 . 13 . min . js ")" type = "text/javascript" ></ script > </ head > < body >     @RenderBody() </ body > </ html > Our example will involve building a list of notes with an id, title and description. Each note can be edited and new notes can be added. The user will never have to leave the single page of notes to manage the note data. The add and edit forms will be delivered in a jQuery UI dialog widget and the note list content will get reloaded via an AJAX call after each change to the list. To begin, we need to craft a model and a data management class. We will do this so we can simulate data storage and get a feel for the workflow of the user experience. The first class named Note will have properties to represent our data model. namespace Website . Models {     public class Note     {         public int Id { get ; set ; }         public string Title { get ; set ; }         public string Body { get ; set ; }     } } The second class named NoteManager will be used to set up our simulated data storage and provide methods for querying and updating the data. We will take a look at the class content as a whole and then walk through each method after. using System . Collections . ObjectModel ; using System . Linq ; using System . Web ; namespace Website . Models {     public class NoteManager     {         public Collection < Note > Notes         {             get             {                 if ( HttpRuntime . Cache [ "Notes" ] == null )                     this . loadInitialData ();                 return ( Collection < Note >) HttpRuntime . Cache [ "Notes" ];             }         }         private void loadInitialData ()         {             var notes = new Collection < Note >();             notes . Add ( new Note                           {                               Id = 1 ,                               Title = "Set DVR for Sunday" ,                               Body = "Don't forget to record Game of Thrones!"                           });             notes . Add ( new Note                           {                               Id = 2 ,                               Title = "Read MVC article" ,                               Body = "Check out the new iwantmymvc.com post"                           });             notes . Add ( new Note                           {                               Id = 3 ,                               Title = "Pick up kid" ,                               Body = "Daughter out of school at 1:30pm on Thursday. Don't forget!"                           });             notes . Add ( new Note                           {                               Id = 4 ,                               Title = "Paint" ,                               Body = "Finish the 2nd coat in the bathroom"                           });             HttpRuntime . Cache [ "Notes" ] = notes ;         }         public Collection < Note > GetAll ()         {             return Notes ;         }         public Note GetById ( int id )         {             return Notes . Where ( i => i . Id == id ). FirstOrDefault ();         }         public int Save ( Note item )         {             if ( item . Id <= 0 )                 return saveAsNew ( item );             var existingNote = Notes . Where ( i => i . Id == item . Id ). FirstOrDefault ();             existingNote . Title = item . Title ;             existingNote . Body = item . Body ;             return existingNote . Id ;         }         private int saveAsNew ( Note item )         {             item . Id = Notes . Count + 1 ;             Notes . Add ( item );             return item . Id ;         }     } } The class has a property named Notes that is read only and handles instantiating a collection of Note objects in the runtime cache if it doesn't exist, and then returns the collection from the cache. This property is there to give us a simulated storage so that we didn't have to add a full blown database (beyond the scope of this post). The private method loadInitialData handles pre-filling the collection of Note objects with some initial data and stuffs them into the cache. Both of these chunks of code would be refactored out with a move to a real means of data storage. The GetAll and GetById methods access our simulated data storage to return all of our notes or a specific note by id. The Save method takes in a Note object, checks to see if it has an Id less than or equal to zero (we assume that an Id that is not greater than zero represents a note that is new) and if so, calls the private method saveAsNew . If the Note item sent in has an Id , the code finds that Note in the simulated storage, updates the Title and Description , and returns the Id value. The saveAsNew method sets the Id , adds it to the simulated storage, and returns the Id value. The increment of the Id is simulated here by getting the current count of the note collection and adding 1 to it. The setting of the Id is the only other chunk of code that would be refactored out when moving to a different data storage approach. With our model and data manager code in place we can turn our attention to the controller and views. We can do all of our work in a single controller. If we use a HomeController , we can add an action method named Index that will return our main view. An action method named List will get all of our Note objects from our manager and return a partial view. We will use some jQuery to make an AJAX call to that action method and update our main view with the partial view content returned. Since the jQuery AJAX call will cache the call to the content in Internet Explorer by default (a setting in jQuery), we will decorate the List, Create and Edit action methods with the OutputCache attribute and a duration of 0. This will send the no-cache flag back in the header of the content to the browser and jQuery will pick that up and not cache the AJAX call. The Create action method instantiates a new Note model object and returns a partial view, specifying the NoteForm.cshtml view file and passing in the model. The NoteForm view is used for the add and edit functionality. The Edit action method takes in the Id of the note to be edited, loads the Note model object based on that Id , and does the same return of the partial view as the Create method. The Save method takes in the posted Note object and sends it to the manager to save. It is decorated with the HttpPost attribute to ensure that it will only be available via a POST. It returns a Json object with a property named Success that can be used by the UX to verify everything went well (we won't use that in our example). Both the add and edit actions in the UX will post to the Save action method, allowing us to reduce the amount of unique jQuery we need to write in our view. The contents of the HomeController.cs file: using System . Web . Mvc ; using Website . Models ; namespace Website . Controllers {     public class HomeController : Controller     {         public ActionResult Index ()         {             return View ();         }         [ OutputCache ( Duration = 0 )]         public ActionResult List ()         {             var manager = new NoteManager ();             var model = manager . GetAll ();             return PartialView ( model );         }         [ OutputCache ( Duration = 0 )]         public ActionResult Create ()         {             var model = new Note ();             return PartialView ( "NoteForm" , model );         }         [ OutputCache ( Duration = 0 )]         public ActionResult Edit ( int id )         {             var manager = new NoteManager ();             var model = manager . GetById ( id );             return PartialView ( "NoteForm" , model );         }         [ HttpPost ]         public JsonResult Save ( Note note )         {             var manager = new NoteManager ();             var noteId = manager . Save ( note );             return Json ( new { Success = noteId > 0 });         }     } } The view for the note form, NoteForm.cshtml , looks like so: @model Website . Models . Note @using ( Html . BeginForm ( "Save" , "Home" , FormMethod . Post , new { id = "NoteForm" })) { @Html . Hidden ( "Id" ) < label class = "Title" >     < span > Title < /span><br / >     @Html . TextBox ( "Title" ) < /label> <label class="Body">     <span>Body</ span >< br />     @Html . TextArea ( "Body" ) < /label> } It is a strongly typed view for our Note model class. We give the <form> element an id attribute so that we can reference it via jQuery. The <label> and <span> tags give our UX some structure that we can style with some CSS. The List.cshtml view is used to render out a <ul> element with all of our notes. @model IEnumerable < Website . Models . Note > < ul class = "NotesList" >     @foreach ( var note in Model )     {     < li >         @note . Title < br />         @note . Body < br />         < span class = "EditLink ButtonLink" noteid = "@note.Id" > Edit < /span>     </ li >     } < /ul> This view is strongly typed as well. It includes a <span> tag that we will use as an edit button. We add a custom attribute named noteid to the <span> tag that we can use in our jQuery to identify the Id of the note object we want to edit. The view, Index.cshtml , contains a bit of html block structure and all of our jQuery logic code. @ {     ViewBag . Title = "Index" ; } < h2 > Notes < /h2> <div id="NoteListBlock"></ div > < span class = "AddLink ButtonLink" > Add New Note < /span> <div id="NoteDialog" title="" class="Hidden"></ div > < script type = "text/javascript" >     $ ( function () {         $ ( "#NoteDialog" ). dialog ({             autoOpen : false , width : 400 , height : 330 , modal : true ,             buttons : {                 "Save" : function () {                     $ . post ( "/Home/Save" ,                         $ ( "#NoteForm" ). serialize (),                         function () {                             $ ( "#NoteDialog" ). dialog ( "close" );                             LoadList ();                         });                 },                 Cancel : function () { $ ( this ). dialog ( "close" ); }             }         });         $ ( ".EditLink" ). live ( "click" , function () {             var id = $ ( this ). attr ( "noteid" );             $ ( "#NoteDialog" ). html ( "" )                 . dialog ( "option" , "title" , "Edit Note" )                 . load ( "/Home/Edit/" + id , function () { $ ( "#NoteDialog" ). dialog ( "open" ); });         });         $ ( ".AddLink" ). click ( function () {             $ ( "#NoteDialog" ). html ( "" )                 . dialog ( "option" , "title" , "Add Note" )                 . load ( "/Home/Create" , function () { $ ( "#NoteDialog" ). dialog ( "open" ); });         });         LoadList ();     });     function LoadList () {         $ ( "#NoteListBlock" ). load ( "/Home/List" );     } < /script> The <div> tag with the id attribute of "NoteListBlock" is used as a container target for the load of the partial view content of our List action method. It starts out empty and will get loaded with content via jQuery once the DOM is loaded. The <div> tag with the id attribute of "NoteDialog" is the element for our dialog widget. The jQuery UI library will use the title attribute for the text in the dialog widget top header bar. We start out with it empty here and will dynamically change the text via jQuery based on the request to either add or edit a note. This <div> tag is given a CSS class named "Hidden" that will set the display:none style on the element. Since our call to the jQuery UI method to make the element a dialog widget will occur in the jQuery document ready code block, the end user will see the <div> element rendered in their browser as the page renders and then it will hide after that jQuery call. Adding the display:hidden to the <div> element via CSS will ensure that it is never rendered until the user triggers the request to open the dialog. The jQuery document load block contains the setup for the dialog node, click event bindings for the edit and add links, and a call to a JavaScript function called LoadList that handles the AJAX call to the List action method. The .dialog() method is called on the "NoteDialog" <div> element and the options are set for the dialog widget. The buttons option defines 2 buttons and their click actions. The first is the "Save" button (the text in quotations is used as the text for the button) that will do an AJAX post to our Save action method and send the serialized form data from the note form (targeted with the id attribute "NoteForm"). Upon completion it will close the dialog widget and call the LoadList to update the UX without a redirect. The "Cancel" button simply closes the dialog widget. The .live() method handles binding a function to the "click" event on all elements with the CSS class named EditLink . We use the .live() method because it will catch and bind our function to elements even as the DOM changes. Since we will be constantly changing the note list as we add and edit we want to ensure that the edit links get wired up with click events. The function for the click event on the edit links gets the noteid attribute and stores it in a local variable. Then it clears out the HTML in the dialog element (to ensure a fresh start), calls the .dialog() method and sets the "title" option (this sets the title attribute value), and then calls the .load() AJAX method to hit our Edit action method and inject the returned content into the "NoteDialog" <div> element. Once the .load() method is complete it opens the dialog widget. The click event binding for the add link is similar to the edit, only we don't need to get the id value and we load the Create action method. This binding is done via the .click() method because it will only be bound on the initial load of the page. The add button will always exist. Finally, we toss in some CSS in the Content/Site.css file to style our form and the add/edit links. . ButtonLink { color : Blue ; cursor : pointer ; } . ButtonLink : hover { text - decoration : underline ; } . Hidden { display : none ; } #NoteForm label { display:block; margin-bottom:6px; } #NoteForm label > span { font-weight:bold; } #NoteForm input[type=text] { width:350px; } #NoteForm textarea { width:350px; height:80px; } With all of our code in place we can do an F5 and see our list of notes: If we click on an edit link we will get the dialog widget with the correct note data loaded: And if we click on the add new note link we will get the dialog widget with the empty form: The end result of our solution tree for our sample:

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  • IIS logs show sc-win32-status=64 but only through some networks

    - by wweicker
    I have an ASP.NET application running on a client server (W2k3, IIS6, .NET 2.0). FWIW, this is a Test instance, it hasn't been moved into Production yet. So it is not running under SSL, load balancing, etc. When I access one of the pages on their server from our office, the page gets hit once. Inspecting the IIS logs (c:WINDOWS\system32\LogFiles\W3SVC1) show a GET for that page, then I push a button on the page and the log file shows a POST. This seems to be working fine so far. Now when I remote into the client's network and access the page from one of their local machines, the log file shows a GET, then I push the button on the page and the log shows two POSTs at the same second. The first one shows status (sc-status, sc-substatus, sc-win32-status) 200 0 64, the second shows 200 0 0. In the log file, both POSTs are identical. Basically the log looks like this (except I masked some of the data): #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status 2009-08-11 20:19:32 x.x.x.x GET /File.aspx - 80 - y.y.y.y Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+6.0;+WOW64;+Trident/4.0;+SLCC1;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.21022;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30618;+MDDR;+OfficeLiveConnector.1.4;+OfficeLivePatch.0.0) 200 0 0 2009-08-11 20:19:45 x.x.x.x POST /File.aspx - 80 - y.y.y.y Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+6.0;+WOW64;+Trident/4.0;+SLCC1;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.21022;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30618;+MDDR;+OfficeLiveConnector.1.4;+OfficeLivePatch.0.0) 200 0 64 2009-08-11 20:19:45 x.x.x.x POST /File.aspx - 80 - y.y.y.y Mozilla/4.0+(compatible;+MSIE+8.0;+Windows+NT+6.0;+WOW64;+Trident/4.0;+SLCC1;+.NET+CLR+2.0.50727;+.NET+CLR+3.5.21022;+.NET+CLR+3.5.30729;+.NET+CLR+3.0.30618;+MDDR;+OfficeLiveConnector.1.4;+OfficeLivePatch.0.0) 200 0 0 The problem is, the page is getting hit twice. The database performs an operation for the first request, then the second request detects that a duplicate operation is being performed and throws an error message. The users think their operation failed, but it actually succeeded. The error description of sc-win32-status 64 is: "The specified network name is no longer available." This leads me to believe, given that both POST requests show an HTTP status of 200, that the server is successful in serving the request, but the client is never notified and resubmits the request. How can I troubleshoot this? Any ideas what could be causing this behavior on their internal network only? I should mention, this is happening at two separate client sites, but does not happen at six of our other client sites, or in our office, or connecting to any of our eight clients over the web. What could be making this reproducible 100% of the time on their local network but 0% of the time anywhere else? Update: I found a very small number of the duplicated POST requests had sc-win32-status of 995 instead of 64 as originally reported. The error description of sc-win32-status=995 is: "The I/O operation has been aborted because of either a thread exit or an application request." This doesn't make any sense (considering I have full access to the code). I still don't understand how or why this issue is occurring, but the new error code leads me to believe it may not be a network issue after all and I am now investigating the possibility of a random code bug.

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  • Disable Java Hardware Acceleration in windows?

    - by Odys
    I have some issues with my graphics card and I want to disable Hardware Acceleration for java apps. Everything that uses HA is displayed blurry. I've seen some tutorials on how to set this parameter -Dsun.java2d.d3d=false The problem is that the Java Control panel itself is using hardware acceleration and I cannot see anything in order to add this parameter. Edit: Went to java control panel in safe mode, added that parameter and problem continues.. Edit2: Win 7 x64 JRE 6 update 30 Edit3: my deployment.properties (after your suggestions) file is: #deployment.properties #Sun Jan 08 01:12:04 EET 2012 deployment.version=6.0 deployment.capture.mime.types=true deployment.browser.path=C\:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe #Java Deployment jre's #Sun Jan 08 01:12:04 EET 2012 deployment.javaws.jre.0.registered=true deployment.javaws.jre.0.platform=1.6 deployment.javaws.jre.0.osname=Windows deployment.javaws.jre.0.path=C\:\\Program Files (x86)\\Java\\jre6\\bin\\javaw.exe deployment.javaws.jre.0.product=1.6.0_30 deployment.javaws.jre.0.osarch=x86 deployment.javaws.jre.0.location=http\://java.sun.com/products/autodl/j2se deployment.javaws.jre.0.enabled=true deployment.javaws.jre.0.args=-Dsun.java2d.d3d\=false deployment.javaws.jre.1.args=-Dsun.java2d.d3d\=false deployment.javaws.jre.0.args=-Dsun.java2d.noddraw=true deployment.javaws.jre.1.args=-Dsun.java2d.noddraw=true still hardware acceleration is enabled. Is there a possibility that applications can override these settings?

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  • Apache2 - mod_rewrite : RequestHeader and environment variables

    - by Guillaume
    I try to get the value of the request parameter "authorization" and to store it in the header "Authorization" of the request. The first rewrite rule works fine. In the second rewrite rule the value of $2 does not seem to be stored in the environement variable. As a consequence the request header "Authorization" is empty. Any idea ? Thanks. <VirtualHost *:8010> RewriteLog "/var/apache2/logs/rewrite.log" RewriteLogLevel 9 RewriteEngine On RewriteRule ^/(.*)&authorization=@(.*)@(.*) http://<ip>:<port>/$1&authorization=@$2@$3 [L,P] RewriteRule ^/(.*)&authorization=@(.*)@(.*) - [E=AUTHORIZATION:$2,NE] RequestHeader add "Authorization" "%{AUTHORIZATION}e" </VirtualHost> I need to handle several cases because sometimes parameters are in the path and sometines they are in the query. Depending on the user. This last case fails. The header value for AUTHORIZATION looks empty. # if the query string includes the authorization parameter RewriteCond %{QUERY_STRING} ^(.*)authorization=@(.*)@(.*)$ # keep the value of the parameter in the AUTHORIZATION variable and redirect RewriteRule ^/(.*) http://<ip>:<port>/ [E=AUTHORIZATION:%2,NE,L,P] # add the value of AUTHORIZATION in the header RequestHeader add "Authorization" "%{AUTHORIZATION}e"

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  • Apache2 - mod_rewrite : RequestHeader and environment variables

    - by Guillaume
    I try to get the value of the request parameter "authorization" and to store it in the header "Authorization" of the request. The first rewrite rule works fine. In the second rewrite rule the value of $2 does not seem to be stored in the environement variable. As a consequence the request header "Authorization" is empty. Any idea ? Thanks. <VirtualHost *:8010> RewriteLog "/var/apache2/logs/rewrite.log" RewriteLogLevel 9 RewriteEngine On RewriteRule ^/(.*)&authorization=@(.*)@(.*) http://<ip>:<port>/$1&authorization=@$2@$3 [L,P] RewriteRule ^/(.*)&authorization=@(.*)@(.*) - [E=AUTHORIZATION:$2,NE] RequestHeader add "Authorization" "%{AUTHORIZATION}e" </VirtualHost> I need to handle several cases because sometimes parameters are in the path and sometines they are in the query. Depending on the user. This last case fails. The header value for AUTHORIZATION looks empty. # if the query string includes the authorization parameter RewriteCond %{QUERY_STRING} ^(.*)authorization=@(.*)@(.*)$ # keep the value of the parameter in the AUTHORIZATION variable and redirect RewriteRule ^/(.*) http://<ip>:<port>/ [E=AUTHORIZATION:%2,NE,L,P] # add the value of AUTHORIZATION in the header RequestHeader add "Authorization" "%{AUTHORIZATION}e"

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  • Fedora 16 can connect to samba share using smbclient but not in nautilus 3.2.1

    - by Nathan Jones
    I have a machine running Ubuntu 11.10 Server acting as a Samba server to share my home directory. Everything works fine on my Windows 7 machine, but on my Fedora 16 laptop, if I use Nautilus to try to access the share using smb://192.168.0.8/nathan in the location bar, it just has the loading cursor and does nothing. It never shows any errors, nothing. Using smbclient works just fine, but I'd like to get it working in Nautilus. I know that there can be problems with SELinux and Samba, so I created a file called booleans.local that contains samba_enable_home_dirs=1. My smb.conf file looks like this: # For Unix password sync to work on a Debian GNU/Linux system, the following # parameters must be set (thanks to Ian Kahan <<[email protected]> for # sending the correct chat script for the passwd program in Debian Sarge). passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . # This boolean controls whether PAM will be used for password changes # when requested by an SMB client instead of the program listed in # 'passwd program'. The default is 'no'. pam password change = yes # This option controls how unsuccessful authentication attempts are mapped # to anonymous connections map to guest = bad user ########## Domains ########### # Is this machine able to authenticate users. Both PDC and BDC # must have this setting enabled. If you are the BDC you must # change the 'domain master' setting to no # ; domain logons = yes # # The following setting only takes effect if 'domain logons' is set # It specifies the location of the user's profile directory # from the client point of view) # The following required a [profiles] share to be setup on the # samba server (see below) ; logon path = \\%N\profiles\%U # Another common choice is storing the profile in the user's home directory # (this is Samba's default) # logon path = \\%N\%U\profile # The following setting only takes effect if 'domain logons' is set # It specifies the location of a user's home directory (from the client # point of view) ; logon drive = H: # logon home = \\%N\%U # The following setting only takes effect if 'domain logons' is set # It specifies the script to run during logon. The script must be stored # in the [netlogon] share # NOTE: Must be store in 'DOS' file format convention ; logon script = logon.cmd # This allows Unix users to be created on the domain controller via the SAMR # RPC pipe. The example command creates a user account with a disabled Unix # password; please adapt to your needs ; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u # This allows machine accounts to be created on the domain controller via the # SAMR RPC pipe. # The following assumes a "machines" group exists on the system ; add machine script = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u # This allows Unix groups to be created on the domain controller via the SAMR # RPC pipe. ; add group script = /usr/sbin/addgroup --force-badname %g ########## Printing ########## # If you want to automatically load your printer list rather # than setting them up individually then you'll need this # load printers = yes # lpr(ng) printing. You may wish to override the location of the # printcap file ; printing = bsd ; printcap name = /etc/printcap # CUPS printing. See also the cupsaddsmb(8) manpage in the # cupsys-client package. ; printing = cups ; printcap name = cups ############ Misc ############ # Using the following line enables you to customise your configuration # on a per machine basis. The %m gets replaced with the netbios name # of the machine that is connecting ; include = /home/samba/etc/smb.conf.%m # Most people will find that this option gives better performance. # See smb.conf(5) and /usr/share/doc/samba-doc/htmldocs/Samba3-HOWTO/speed.html # for details # You may want to add the following on a Linux system: # SO_RCVBUF=8192 SO_SNDBUF=8192 # socket options = TCP_NODELAY # The following parameter is useful only if you have the linpopup package # installed. The samba maintainer and the linpopup maintainer are # working to ease installation and configuration of linpopup and samba. ; message command = /bin/sh -c '/usr/bin/linpopup "%f" "%m" %s; rm %s' & # Domain Master specifies Samba to be the Domain Master Browser. If this # machine will be configured as a BDC (a secondary logon server), you # must set this to 'no'; otherwise, the default behavior is recommended. # domain master = auto # Some defaults for winbind (make sure you're not using the ranges # for something else.) ; idmap uid = 10000-20000 ; idmap gid = 10000-20000 ; template shell = /bin/bash # The following was the default behaviour in sarge, # but samba upstream reverted the default because it might induce # performance issues in large organizations. # See Debian bug #368251 for some of the consequences of *not* # having this setting and smb.conf(5) for details. ; winbind enum groups = yes ; winbind enum users = yes # Setup usershare options to enable non-root users to share folders # with the net usershare command. # Maximum number of usershare. 0 (default) means that usershare is disabled. ; usershare max shares = 100 # Allow users who've been granted usershare privileges to create # public shares, not just authenticated ones usershare allow guests = yes #======================= Share Definitions ======================= # Un-comment the following (and tweak the other settings below to suit) # to enable the default home directory shares. This will share each # user's home director as \\server\username [homes] comment = Home Directories browseable = yes # By default, the home directories are exported read-only. Change the # next parameter to 'no' if you want to be able to write to them. read only = no # File creation mask is set to 0700 for security reasons. If you want to # create files with group=rw permissions, set next parameter to 0775. ; create mask = 0775 # Directory creation mask is set to 0700 for security reasons. If you want to # create dirs. with group=rw permissions, set next parameter to 0775. ; directory mask = 0775 # By default, \\server\username shares can be connected to by anyone # with access to the samba server. Un-comment the following parameter # to make sure that only "username" can connect to \\server\username # The following parameter makes sure that only "username" can connect # # This might need tweaking when using external authentication schemes valid users = %S # Un-comment the following and create the netlogon directory for Domain Logons # (you need to configure Samba to act as a domain controller too.) ;[netlogon] ; comment = Network Logon Service ; path = /home/samba/netlogon ; guest ok = yes ; read only = yes # Un-comment the following and create the profiles directory to store # users profiles (see the "logon path" option above) # (you need to configure Samba to act as a domain controller too.) # The path below should be writable by all users so that their # profile directory may be created the first time they log on ;[profiles] ; comment = Users profiles ; path = /home/samba/profiles ; guest ok = no ; browseable = no ; create mask = 0600 ; directory mask = 0700 [printers] comment = All Printers browseable = no path = /var/spool/samba printable = yes guest ok = no read only = no create mask = 0700 # Windows clients look for this share name as a source of downloadable # printer drivers [print$] comment = Printer Drivers path = /var/lib/samba/printers browseable = yes read only = yes guest ok = no # Uncomment to allow remote administration of Windows print drivers. # You may need to replace 'lpadmin' with the name of the group your # admin users are members of. # Please note that you also need to set appropriate Unix permissions # to the drivers directory for these users to have write rights in it ; write list = root, @lpadmin # A sample share for sharing your CD-ROM with others. ;[cdrom] ; comment = Samba server's CD-ROM ; read only = yes ; locking = no ; path = /cdrom ; guest ok = yes # The next two parameters show how to auto-mount a CD-ROM when the # cdrom share is accesed. For this to work /etc/fstab must contain # an entry like this: # # /dev/scd0 /cdrom iso9660 defaults,noauto,ro,user 0 0 # # The CD-ROM gets unmounted automatically after the connection to the # # If you don't want to use auto-mounting/unmounting make sure the CD # is mounted on /cdrom # ; preexec = /bin/mount /cdrom ; postexec = /bin/umount /cdrom smbusers: <nathan> = <"nathan"> Any help would be very much appreciated! Thanks!

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  • nginx: dump HTTP requests for debugging

    - by Alexander Gladysh
    Ubuntu 10.04.2 nginx 0.7.65 I see some weird HTTP requests coming to my nginx server. To better understand what is going on, I want to dump whole HTTP request data for such queries. (I.e. dump all request headers and body somewhere I can read them.) Can I do this with nginx? Alternatively, is there some HTTP server that allows me to do this out of the box, to which I can proxy these requests by the means of nginx? Update: Note that this box has a bunch of normal traffic, and I would like to avoid capturing all of it on low level (say, with tcpdump) and filtering it out later. I think it would be much easier to filter good traffic first in a rewrite rule (fortunately I can write one quite easily in this case), and then deal with bogus traffic only. And I do not want to channel bogus traffic to another box just to be able to capture it there with tcpdump. Update 2: To give a bit more details, bogus request have parameter named (say) foo in their GET query (the value of the parameter can differ). Good requests are guaranteed not to have this parameter ever. If I can filter by this in tcpdump or ngrep somehow — no problem, I'll use these.

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  • Debian dependency problems / partially installed

    - by Michael
    I tried to install curl support for php 5 on my debian squeeze machine and since I'm having problems. After trying to install curl I got dependency issues which I tried to solve by removing what started the issues. From one thing came another and I'm currently looking at ~29 issues when I try to do an apt-get upgrade. These issues vary from unable to config, dependency and unable to remove errors. I tried apt-get upgrade -f and installing packages using dpkg command. I tried removing using purge and force. I manually removed stuff to try and fix it. I tried running dpkg --configure -a. I've to say I'm still pretty new to linux so I'm out of idea's and cant seem to find an answer online that matches my problems. Here's a part of the apt-get upgrade command output: Reading package lists... Building dependency tree... Reading state information... 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 29 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up libgeoip1 (1.4.7~beta6+dfsg-1) ... Bus error dpkg: error processing libgeoip1 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libisc62 (1:9.7.3.dfsg-1~squeeze3) ... Bus error dpkg: error processing libisc62 (--configure): subprocess installed post-installation script returned error exit status 135 dpkg: dependency problems prevent configuration of libdns69: libdns69 depends on libgeoip1 (>= 1.4.7~beta6+dfsg); however: Package libgeoip1 is not configured yet. libdns69 depends on libisc62; however: Package libisc62 is not configured yet. dpkg: error processing libdns69 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libisccc60: libisccc60 depends on libisc62; however: Package libisc62 is not configured yet. dpkg: error processing libisccc60 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of libisccfg62: libisccfg62 depends on libdns69; however: Package libdns69 is not configured yet. .. continues Errors were encountered while processing: libgeoip1 libisc62 libdns69 libisccc60 libisccfg62 libbind9-60 liblwres60 bind9-host libavahi-core7 libdaemon0 avahi-daemon libexif12 libffi5 libgomp1 libgphoto2-port0 libgphoto2-2 libperl5.10 libsensors4 libsnmp15 libhpmud0 libieee1284-3 libnss-mdns libossp-uuid16 libpq5 libv4l-0 libsane libsane-hpaio libssh2-1 python-gobject dpkg --configure -a Setting up libpq5 (8.4.8-0squeeze2) ... Bus error dpkg: error processing libpq5 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libperl5.10 (5.10.1-17squeeze2) ... Bus error dpkg: error processing libperl5.10 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libffi5 (3.0.9-3) ... Bus error dpkg: error processing libffi5 (--configure): subprocess installed post-installation script returned error exit status 135 Setting up libexif12 (0.6.19-1) ... .. continues Suggestions are really welcome I really don't know what to do. Michael.

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  • /etc/hosts: What is loghost? (fresh install of Solaris 10 update 9)

    - by cjavapro
    # # Internet host table # ::1 localhost 127.0.0.1 localhost XX.XX.XX.XX myserver loghost What is the purpose of loghost? If it was not for having loghost in there, all the /etc/hosts files on all the servers in this particular network could be identical. Edit: I looked at /etc/syslog.conf #ident "@(#)syslog.conf 1.5 98/12/14 SMI" /* SunOS 5.0 */ # # Copyright (c) 1991-1998 by Sun Microsystems, Inc. # All rights reserved. # # syslog configuration file. # # This file is processed by m4 so be careful to quote (`') names # that match m4 reserved words. Also, within ifdef's, arguments # containing commas must be quoted. # *.err;kern.notice;auth.notice /dev/sysmsg *.err;kern.debug;daemon.notice;mail.crit /var/adm/messages *.alert;kern.err;daemon.err operator *.alert root *.emerg * # if a non-loghost machine chooses to have authentication messages # sent to the loghost machine, un-comment out the following line: #auth.notice ifdef(`LOGHOST', /var/log/authlog, @loghost) mail.debug ifdef(`LOGHOST', /var/log/syslog, @loghost) # # non-loghost machines will use the following lines to cause "user" # log messages to be logged locally. # ifdef(`LOGHOST', , user.err /dev/sysmsg user.err /var/adm/messages user.alert `root, operator' user.emerg * ) Very interesting. when shutting down,, alerts go to all users probably through *.emerg * Looking at ifdef, it seems that the first parameter checks to see if current machine is a loghost, second parameter is what to do if it is and third parameter is what to do if it is not. Edit: If you want to test a logging rule you can use svcadm restart system-log to restart the logging service and then logger -p notice "test" to send a test log message where notice can be replaced with any type such as user.err, auth.notice, etc.

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  • Syntax error, unexpected '}' wordpress error

    - by Zach Johnson
    Hello I am not a PHP programmer so I have no idea what the problem is here. Basiclly I am trying to use a wordpress theme but I get this error The Parse error: syntax error, unexpected '}' in / home/a5618915/public_html/photo/wp-content/themes/iphoto/functions.php on line 1 I have no Idea what exactly is wrong in the php file. The code for the functions.php is below. If someone could point out whats wrong I would be really grateful. <?php define('THEME_NAME','iphoto'); load_theme_textdomain( THEME_NAME,TEMPLATEPATH .'/languages'); add_custom_background(); add_theme_support( 'automatic-feed-links' ); add_theme_support( 'post-formats', array( 'video')); if ( function_exists('register_nav_menus') ) { register_nav_menus(array('primary' => 'header')); } add_action('wp_ajax_b_ajax_post_action', 'b_ajax_callback'); function b_ajax_callback() { global $wpdb; if(isset($_POST['type']) && $_POST['type'] == 'upload') { $clickedID = $_POST['data']; $filename = $_FILES[$clickedID]; $filename['name'] = preg_replace('/[^a-zA-Z0-9._-]/', '', $filename['name']); $override['test_form'] = false; $override['action'] = 'wp_handle_upload'; $uploaded_file = wp_handle_upload($filename,$override); $upload_tracking[] = $clickedID; update_option($clickedID, $uploaded_file['url'] ); if(!empty($uploaded_file['error'])) {echo 'Upload Error: ' . $uploaded_file['error']; } else { echo $uploaded_file['url']; } } die(); } function post_thumbnail($a){ global $post; $post_img = ''; ob_start(); ob_end_clean(); $output = preg_match_all('/\<img.+?src="(.+?)".*?\/>/is',$post->post_content,$matches ,PREG_SET_ORDER); $cnt = count( $matches ); if($a==1){ if($cnt>0){ if($cnt>1){ if($cnt>3) $cnt=3; for($i=0;$i<$cnt;$i++){ $post_current = $i+1; $post_img_src = $matches[$i][1]; if($i==0){$post_spans .= '<span class="current">'.$post_current.'</span>';}else{ $post_spans .= '<span>'.$post_current.'</span>'; } $post_imgs .='<img src="'.get_bloginfo('template_url').'/timthumb.php?src='.$post_img_src.'&amp;w=285&amp;zc=1" />'; } $post_img = $post_imgs.'<span class="imgNav">'.$post_spans.'</span>'; }else{ $post_img_src = $matches [0][1]; $post_img = '<img src="'.get_bloginfo('template_url').'/timthumb.php?src='.$post_img_src.'&amp;w=285&amp;zc=1" />'; } echo $post_img; } }else{ return $cnt; } } function post_content_thumbnail($c) { if(is_single()){ $c = preg_replace('/\width="*".+?height="*"/i', '', $c); $s = array('/src="(.+?.(jpg|bmp|png|jepg|gif))".+?/i' => 'src="'.get_bloginfo("template_url").'/timthumb.php?src=$1&amp;h=440&amp;zc=1"'); foreach($s as $p => $r){ $c = preg_replace($p,$r,$c); } return $c; } } add_filter( 'the_content', 'post_content_thumbnail' ); function ajax_post(){ if( isset($_GET['action'])&& $_GET['action'] == 'ajax_post'){ if(isset($_GET['cat'])){ $args = array( 'category_name' => $_GET['cat'], 'paged' => $_GET['pag'] ); }else if(isset($_GET['pag'])){ $args = array( 'paged' => $_GET['pag'] ); } query_posts($args); if(have_posts()){while (have_posts()):the_post();?> <?php get_template_part( 'content', get_post_format() ); ?> <?php endwhile;} die(); }else{return;} } add_action('init', 'ajax_post'); function pagenavi( $p = 2 ) { if ( is_singular() ) return; global $wp_query,$paged; $max_page = $wp_query->max_num_pages; if ( $max_page == 1 ){ echo '<span id="post-current">1</span> / <span id="post-count">1</span>'; return; } if ( empty( $paged ) ) $paged = 1; if ( $paged >1 ) echo "<a id='prev' title='Prev' href='",esc_html( get_pagenum_link( $paged -1 ) ),"'>&lt;&lt;</a> "; echo '<span id="post-current">'.$paged .'</span> / <span id="post-count">'.$max_page .'</span>'; if ( $paged <$max_page ) echo "<a id='next' title='Next' href='",esc_html( get_pagenum_link( $paged +1) ),"'>&gt;&gt;</a> "; } function iphoto_comment($comment,$args,$depth) { $GLOBALS['comment'] = $comment; ;echo ' <li ';comment_class();;echo ' id="li-comment-';comment_ID() ;echo '" > <div id="comment-';comment_ID();;echo '" class="comment-body"> <div class="commentmeta">';echo get_avatar( $comment->comment_author_email,$size = '48');;echo '</div> ';if ($comment->comment_approved == '0') : ;echo ' <em>';_e('Your comment is awaiting moderation.') ;echo '</em><br /> ';endif;;echo ' <div class="commentmetadata">&nbsp;-&nbsp;';printf(__('%1$s %2$s'),get_comment_date('Y.n.d'),get_comment_time('G:i'));;echo '</div> <div class="reply">';comment_reply_link(array_merge( $args,array('depth'=>$depth,'max_depth'=>$args['max_depth'],'reply_text'=>__('Reply')))) ;echo '</div> <div class="vcard">';printf(__('%s'),get_comment_author_link()) ;echo '</div> ';comment_text() ;echo ' </div> '; } add_action('admin_init', 'iphoto_init'); function iphoto_init() { if (isset($_GET['page']) && $_GET['page'] == 'functions.php') { $dir = get_bloginfo('template_directory'); wp_enqueue_script('adminjquery', $dir . '/includes/admin.js', false, '1.0.0', false); wp_enqueue_style('admincss', $dir . '/includes/admin.css', false, '1.0.0', 'screen'); } } add_action('admin_menu','iphoto_page'); function iphoto_page (){ if ( count($_POST) >0 &&isset($_POST['iphoto_settings']) ){ $options = array ('keywords','description','analytics','lib','views','noajax','animate','phzoom','copyright'); foreach ( $options as $opt ){ delete_option ( 'iphoto_'.$opt,$_POST[$opt] ); add_option ( 'iphoto_'.$opt,$_POST[$opt] ); } } add_theme_page('iPhoto '.__('Theme Options',THEME_NAME),__('Theme Options',THEME_NAME),'edit_themes',basename(__FILE__),'iphoto_settings'); } function iphoto_settings(){?> <div class="wrap"> <div> <h2><?php _e( 'iPhoto Theme Options<span>Version: ',THEME_NAME);?><?php $theme_data=get_theme_data(TEMPLATEPATH . '/style.css'); echo $theme_data['Version'];?></span></h2> </div> <div class="clear"></div> <form method="post" action=""> <div id="theme-Option"> <div id="theme-menu"> <span class="m1"><?php _e( 'jQuery Effect',THEME_NAME);?></span> <span class="m2"><?php _e( 'Relative Plugins',THEME_NAME);?></span> <span class="m3"><?php _e( 'Website Information',THEME_NAME);?></span> <span class="m4"><?php _e( 'Analytics Code',THEME_NAME);?></span> <span class="m5"><?php _e( 'Footer Copyright',THEME_NAME);?></span> <span class="m6"><?php _e( 'iPhoto Theme Declare',THEME_NAME);?></span> <div class="clear"></div> </div> <div id="theme-content"> <ul> <li> <tr><td> <em><?php _e( 'iPhoto use jquery 1.4.4 which contained in this theme, you can also use the Google one instead.',THEME_NAME);?></em><br/> <label><input name="lib" type="checkbox" id="lib" value="1" <?php if (get_option('iphoto_lib')!='') echo 'checked="checked"' ;?>/><?php _e( 'Load the jQuery Library supported by Google',THEME_NAME);?></label><br/><br/> </td></tr> <tr><td> <em><?php _e( 'Index page infinite loading posts.',THEME_NAME);?></em><br/> <label><input name="noajax" type="checkbox" id="noajax" value="1" <?php if (get_option('iphoto_noajax')!='') echo 'checked="checked"' ;?>/><?php _e( 'Deactivate the Infinite loading posts',THEME_NAME);?></label><br/><br/> </td></tr> <tr><td> <em><?php _e( '<strong>Animation of relayout elements</strong>',THEME_NAME);?></em><br /> <input name="animate" type="checkbox" id="animate" value="1" <?php if (get_option('iphoto_animate')!='') echo 'checked="checked"';?>/><?php _e( 'Deactivate animation effect on index page',THEME_NAME);?> </td></tr> </li> <li> <tr><td> <em><?php _e( 'WP-PostViews, Enables you to display how many times a post/page had been viewed.',THEME_NAME);?></em><br/> <label><input name="views" type="checkbox" id="views" value="1" <?php if (get_option('iphoto_views')!='') echo 'checked="checked"' ?>/><?php _e( 'Activate WP-PostViews',THEME_NAME);?></label><br/><br/> </td></tr> </li> <li> <tr><td> <?php _e( '<em>Keywords, separate by English commas. like MuFeng, Computer, Software</em>',THEME_NAME);?><br/> <textarea name="keywords" id="keywords" rows="1" cols="70" style="font-size:11px;width:100%;"><?php echo get_option('iphoto_keywords');?></textarea><br/> </td></tr> <tr><td> <?php _e( '<em>Description, explain what\'s this site about. like MuFeng, Breathing the wind</em>',THEME_NAME);?><br/> <textarea name="description" id="description" rows="3" cols="70" style="font-size:11px;width:100%;"><?php echo get_option('iphoto_description');?></textarea> </td></tr> </li> <li> <tr><td> <?php _e( 'You can get your Google Analytics code <a target="_blank" href="https://www.google.com/analytics/settings/check_status_profile_handler">here</a>.',THEME_NAME);?></label><br> <textarea name="analytics" id="analytics" rows="5" cols="70" style="font-size:11px;width:100%;"><?php echo stripslashes(get_option('iphoto_analytics'));?></textarea> </td></tr> </li> <li> <tr><td> <textarea name="copyright" id="copyright" rows="5" cols="70" style="font-size:11px;width:100%;"><?php if(stripslashes(get_option('iphoto_copyright'))!=''){echo stripslashes(get_option('iphoto_copyright'));}else{echo 'Copyright &copy; '.date('Y').' '.'<a href="'.home_url( '/').'" title="'.esc_attr( get_bloginfo( 'name') ).'">'.esc_attr( get_bloginfo( 'name') ).'</a> All rights reserved'; };?></textarea> <br/><em><?php _e( '<b>Preview</b>',THEME_NAME);?><span> : </span><span><?php if(stripslashes(get_option('iphoto_copyright'))!=''){echo stripslashes(get_option('iphoto_copyright'));}else{echo 'Copyright &copy; '.date('Y').' '.'<a href="'.home_url( '/').'" title="'.esc_attr( get_bloginfo( 'name') ).'">'.esc_attr( get_bloginfo( 'name') ).'</a> All rights reserved'; };?></span></em> </td></tr> </li> <li> <tr><td> <p><?php _e('iPhoto is created, developed and maintained by <a href="http://mufeng.me/">MuFeng</a>. If you like iPhoto, please donate. It will help in developing new features and versions.',THEME_NAME);?><?php _e('Alipay',THEME_NAME);?>:</strong> <a href="http://www.alipay.com" target="_blank" title="Alipay">[email protected]</a></p> <h3 style="color:#333" id="introduce"><?php _e( 'Introduction',THEME_NAME);?></h3> <p style="text-indent: 2em;margin:10px 0;"><?php _e( 'iPhoto is evolved from one theme of Tumblr and turned it into a photo theme which can be used at wordpress.',THEME_NAME);?></p> <h3 style="color:#333"><?php _e( 'Published Address',THEME_NAME);?></h3> <p id="release" style="text-indent: 2em;margin:10px 0;"><a href="http://mufeng.me/wordpress-theme-iphoto.html" target="_blank">http://mufeng.me/wordpress-theme-iphoto.html</a></p> <h3 style="color:#333"><?php _e( 'Preview Address',THEME_NAME);?></h3> <p id="preview" style="text-indent: 2em;margin:10px 0;"><a href="http://mufeng.me/photo/" target="_blank">http://mufeng.me/photo/</a></p> <h3 style="color:#333" id="bug"><?php _e( 'Report Bugs',THEME_NAME);?></h3> <p style="text-indent: 2em;margin:10px 0;"><?php _e( 'Weibo <a href="http://weibo.com/meapo" target="_blank">@mufeng.me</a> or leave a message at <a href="http://mufeng.me" target="_blank">http://mufeng.me</a>?',THEME_NAME);?></p> </td></tr> </li> </ul> </div> </div> <p class="submit"> <input type="submit" name="Submit" class="button-primary" value="<?php _e( 'Save Options',THEME_NAME);?>" /> <input type="hidden" name="iphoto_settings" value="save" style="display:none;" /> </p> </form> </div> <?php } ?>

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  • SQL SERVER – SHRINKFILE and TRUNCATE Log File in SQL Server 2008

    - by pinaldave
    Note: Please read the complete post before taking any actions. This blog post would discuss SHRINKFILE and TRUNCATE Log File. The script mentioned in the email received from reader contains the following questionable code: “Hi Pinal, If you could remember, I and my manager met you at TechEd in Bangalore. We just upgraded to SQL Server 2008. One of our jobs failed as it was using the following code. The error was: Msg 155, Level 15, State 1, Line 1 ‘TRUNCATE_ONLY’ is not a recognized BACKUP option. The code was: DBCC SHRINKFILE(TestDBLog, 1) BACKUP LOG TestDB WITH TRUNCATE_ONLY DBCC SHRINKFILE(TestDBLog, 1) GO I have modified that code to subsequent code and it works fine. But, are there other suggestions you have at the moment? USE [master] GO ALTER DATABASE [TestDb] SET RECOVERY SIMPLE WITH NO_WAIT DBCC SHRINKFILE(TestDbLog, 1) ALTER DATABASE [TestDb] SET RECOVERY FULL WITH NO_WAIT GO Configuration of our server and system is as follows: [Removed not relevant data]“ An email like this that suddenly pops out in early morning is alarming email. Because I am a dead, busy mind, so I had only one min to reply. I wrote down quickly the following note. (As I said, it was a single-minute email so it is not completely accurate). Here is that quick email shared with all of you. “Hi Mr. DBA [removed the name] Thanks for your email. I suggest you stop this practice. There are many issues included here, but I would list two major issues: 1) From the setting database to simple recovery, shrinking the file and once again setting in full recovery, you are in fact losing your valuable log data and will be not able to restore point in time. Not only that, you will also not able to use subsequent log files. 2) Shrinking file or database adds fragmentation. There are a lot of things you can do. First, start taking proper log backup using following command instead of truncating them and losing them frequently. BACKUP LOG [TestDb] TO  DISK = N'C:\Backup\TestDb.bak' GO Remove the code of SHRINKING the file. If you are taking proper log backups, your log file usually (again usually, special cases are excluded) do not grow very big. There are so many things to add here, but you can call me on my [phone number]. Before you call me, I suggest for accuracy you read Paul Randel‘s two posts here and here and Brent Ozar‘s Post here. Kind Regards, Pinal Dave” I guess this post is very much clear to you. Please leave your comments here. As mentioned, this is a very huge subject; I have just touched a tip of the ice-berg and have tried to point to authentic knowledge. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Backup and Restore, SQL Data Storage, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • April 30th Links: ASP.NET, ASP.NET MVC, Visual Studio 2010

    - by ScottGu
    Here is the latest in my link-listing series. [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] ASP.NET Data Web Control Enhancements in ASP.NET 4.0: Scott Mitchell has a good article that summarizes some of the nice improvements coming to the ASP.NET 4 data controls. Refreshing an ASP.NET AJAX UpdatePanel with JavaScript: Scott Mitchell has another nice article in his series on using ASP.NET AJAX that demonstrates how to programmatically trigger an UpdatePanel refresh using JavaScript on the client. ASP.NET MVC ASP.NET MVC 2: Basics and Introduction: Scott Hanselman delivers an awesome introductory talk on ASP.NET MVC.  Great for people looking to understand and learn ASP.NET MVC. ASP.NET MVC 2: Ninja Black Belt Tips: Another great talk by Scott Hanselman about how to make the most of several features of ASP.NET MVC 2. ASP.NET MVC 2 Html.Editor/Display Templates: A great blog post detailing the new Html.EditorFor() and Html.DisplayFor() helpers within ASP.NET MVC 2. MVCContrib Grid: Jeremy Skinner’s video presentation about the new Html.Grid() helper component within the (most awesome) MvcContrib project for ASP.NET MVC. Code Snippets for ASP.NET MVC 2 in VS 2010: Raj Kaimal documents some of the new code snippets for ASP.NET MVC 2 that are now built-into Visual Studio 2010.  Read this article to learn how to do common scenarios with fewer keystrokes. Turn on Compile-time View Checking for ASP.NET MVC Projects in TFS 2010 Build: Jim Lamb has a nice post that describes how to enable compile-time view checking as part of automated builds done with a TFS Build Server.  This will ensure any errors in your view templates raise build-errors (allowing you to catch them at build-time instead of runtime). Visual Studio 2010 VS 2010 Keyboard Shortcut Posters for VB, C#, F# and C++: Keyboard shortcut posters that you can download and then printout. Ideal to provide a quick reference on your desk for common keystroke actions inside VS 2010. My Favorite New Features in VS 2010: Scott Mitchell has a nice article that summarizes some of his favorite new features in VS 2010.  Check out my VS 2010 and .NET 4 blog series for more details on some of them. 6 Cool VS 2010 Quick Tips and Features: Anoop has a nice blog post describing 6 cool features of VS 2010 that you can take advantage of. SharePoint Development with VS 2010: Beth Massi links to a bunch of nice “How do I?” videos that that demonstrate how to use the SharePoint development support built-into VS 2010. How to Pin a Project to the Recent Projects List in VS 2010: A useful tip/trick that demonstrates how to “pin” a project to always show up on the “Recent Projects” list within Visual Studio 2010. Using the WPF Tree Visualizer in VS 2010: Zain blogs about the new WPF Tree Visualizer supported by the VS 2010 debugger.  This makes it easier to visualize WPF control hierarchies within the debugger. TFS 2010 Power Tools Released: Brian Harry blogs about the cool new TFS 2010 extensions released with this week’s TFS 2010 Power Tools release. What is New with T4 in VS 2010: T4 is the name of Visual Studio’s template-based code generation technology.  Lots of scenarios within VS 2010 now use T4 for code generation customization. Two examples are ASP.NET MVC Views and EF4 Model Generation.  This post describes some of the many T4 infrastructure improvements in VS 2010. Hope this helps, Scott P.S. If you haven’t already, check out this month’s "Find a Hoster” page on the www.asp.net website to learn about great (and very inexpensive) ASP.NET hosting offers.

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  • Programação paralela no .NET Framework 4 – Parte II

    - by anobre
    Olá pessoal, tudo bem? Este post é uma continuação da série iniciada neste outro post, sobre programação paralela. Meu objetivo hoje é apresentar o PLINQ, algo que poderá ser utilizado imediatamente nos projetos de vocês. Parallel LINQ (PLINQ) PLINQ nada mais é que uma implementação de programação paralela ao nosso famoso LINQ, através de métodos de extensão. O LINQ foi lançado com a versão 3.0 na plataforma .NET, apresentando uma maneira muito mais fácil e segura de manipular coleções IEnumerable ou IEnumerable<T>. O que veremos hoje é a “alteração” do LINQ to Objects, que é direcionado a coleções de objetos em memória. A principal diferença entre o LINQ to Objects “normal” e o paralelo é que na segunda opção o processamento é realizado tentando utilizar todos os recursos disponíveis para tal, obtendo uma melhora significante de performance. CUIDADO: Nem todas as operações ficam mais rápidas utilizando recursos de paralelismo. Não deixe de ler a seção “Performance” abaixo. ParallelEnumerable Tudo que a gente precisa para este post está organizado na classe ParallelEnumerable. Esta classe contém os métodos que iremos utilizar neste post, e muito mais: AsParallel AsSequential AsOrdered AsUnordered WithCancellation WithDegreeOfParallelism WithMergeOptions WithExecutionMode ForAll … O exemplo mais básico de como executar um código PLINQ é utilizando o métodos AsParallel, como o exemplo: var source = Enumerable.Range(1, 10000); var evenNums = from num in source.AsParallel() where Compute(num) > 0 select num; Algo tão interessante quanto esta facilidade é que o PLINQ não executa sempre de forma paralela. Dependendo da situação e da análise de alguns itens no cenário de execução, talvez seja mais adequado executar o código de forma sequencial – e nativamente o próprio PLINQ faz esta escolha.  É possível forçar a execução para sempre utilizar o paralelismo, caso seja necessário. Utilize o método WithExecutionMode no seu código PLINQ. Um teste muito simples onde podemos visualizar a diferença é demonstrado abaixo: static void Main(string[] args) { IEnumerable<int> numbers = Enumerable.Range(1, 1000); IEnumerable<int> results = from n in numbers.AsParallel() where IsDivisibleByFive(n) select n; Stopwatch sw = Stopwatch.StartNew(); IList<int> resultsList = results.ToList(); Console.WriteLine("{0} itens", resultsList.Count()); sw.Stop(); Console.WriteLine("Tempo de execução: {0} ms", sw.ElapsedMilliseconds); Console.WriteLine("Fim..."); Console.ReadKey(true); } static bool IsDivisibleByFive(int i) { Thread.SpinWait(2000000); return i % 5 == 0; }   Basta remover o AsParallel da instrução LINQ que você terá uma noção prática da diferença de performance. 1. Instrução utilizando AsParallel   2. Instrução sem utilizar paralelismo Performance Apesar de todos os benefícios, não podemos utilizar PLINQ sem conhecer todos os seus detalhes. Lembre-se de fazer as perguntas básicas: Eu tenho trabalho suficiente que justifique utilizar paralelismo? Mesmo com o overhead do PLINQ, vamos ter algum benefício? Por este motivo, visite este link e conheça todos os aspectos, antes de utilizar os recursos disponíveis. Conclusão Utilizar recursos de paralelismo é ótimo, aumenta a performance, utiliza o investimento realizado em hardware – tudo isso sem custo de produtividade. Porém, não podemos usufruir de qualquer tipo de tecnologia sem conhece-la a fundo antes. Portanto, faça bom uso, mas não esqueça de manter o conhecimento a frente da empolgação. Abraços.

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  • ASP.NET JavaScript Routing for ASP.NET MVC–Constraints

    - by zowens
    If you haven’t had a look at my previous post about ASP.NET routing, go ahead and check it out before you read this post: http://weblogs.asp.net/zowens/archive/2010/12/20/asp-net-mvc-javascript-routing.aspx And the code is here: https://github.com/zowens/ASP.NET-MVC-JavaScript-Routing   Anyways, this post is about routing constraints. A routing constraint is essentially a way for the routing engine to filter out route patterns based on the day from the URL. For example, if I have a route where all the parameters are required, I could use a constraint on the required parameters to say that the parameter is non-empty. Here’s what the constraint would look like: Notice that this is a class that inherits from IRouteConstraint, which is an interface provided by System.Web.Routing. The match method returns true if the value is a match (and can be further processed by the routing rules) or false if it does not match (and the route will be matched further along the route collection). Because routing constraints are so essential to the route matching process, it was important that they be part of my JavaScript routing engine. But the problem is that we need to somehow represent the constraint in JavaScript. I made a design decision early on that you MUST put this constraint into JavaScript to match a route. I didn’t want to have server interaction for the URL generation, like I’ve seen in so many applications. While this is easy to maintain, it causes maintenance issues in my opinion. So the way constraints work in JavaScript is that the constraint as an object type definition is set on the route manager. When a route is created, a new instance of the constraint is created with the specific parameter. In its current form the constraint function MUST return a function that takes the route data and will return true or false. You will see the NotEmpty constraint in a bit. Another piece to the puzzle is that you can have the JavaScript exist as a string in your application that is pulled in when the routing JavaScript code is generated. There is a simple interface, IJavaScriptAddition, that I have added that will be used to output custom JavaScript. Let’s put it all together. Here is the NotEmpty constraint. There’s a few things at work here. The constraint is called “notEmpty” in JavaScript. When you add the constraint to a parameter in your C# code, the route manager generator will look for the JsConstraint attribute to look for the name of the constraint type name and fallback to the class name. For example, if I didn’t apply the “JsConstraint” attribute, the constraint would be called “NotEmpty”. The JavaScript code essentially adds a function to the “constraintTypeDefs” object on the “notEmpty” property (this is how constraints are added to routes). The function returns another function that will be invoked with routing data. Here’s how you would use the NotEmpty constraint in C# and it will work with the JavaScript routing generator. The only catch to using route constraints currently is that the following is not supported: The constraint will work in C# but is not supported by my JavaScript routing engine. (I take pull requests so if you’d like this… go ahead and implement it).   I just wanted to take this post to explain a little bit about the background on constraints. I am looking at expanding the current functionality, but for now this is a good start. Thanks for all the support with the JavaScript router. Keep the feedback coming!

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  • GPGPU

    WhatGPU obviously stands for Graphics Processing Unit (the silicon powering the display you are using to read this blog post). The extra GP in front of that stands for General Purpose computing.So, altogether GPGPU refers to computing we can perform on GPU for purposes beyond just drawing on the screen. In effect, we can use a GPGPU a bit like we already use a CPU: to perform some calculation (that doesn’t have to have any visual element to it). The attraction is that a GPGPU can be orders of magnitude faster than a CPU.WhyWhen I was at the SuperComputing conference in Portland last November, GPGPUs were all the rage. A quick online search reveals many articles introducing the GPGPU topic. I'll just share 3 here: pcper (ignoring all pages except the first, it is a good consumer perspective), gizmodo (nice take using mostly layman terms) and vizworld (answering the question on "what's the big deal").The GPGPU programming paradigm (from a high level) is simple: in your CPU program you define functions (aka kernels) that take some input, can perform the costly operation and return the output. The kernels are the things that execute on the GPGPU leveraging its power (and hence execute faster than what they could on the CPU) while the host CPU program waits for the results or asynchronously performs other tasks.However, GPGPUs have different characteristics to CPUs which means they are suitable only for certain classes of problem (i.e. data parallel algorithms) and not for others (e.g. algorithms with branching or recursion or other complex flow control). You also pay a high cost for transferring the input data from the CPU to the GPU (and vice versa the results back to the CPU), so the computation itself has to be long enough to justify the overhead transfer costs. If your problem space fits the criteria then you probably want to check out this technology.HowSo where can you get a graphics card to start playing with all this? At the time of writing, the two main vendors ATI (owned by AMD) and NVIDIA are the obvious players in this industry. You can read about GPGPU on this AMD page and also on this NVIDIA page. NVIDIA's website also has a free chapter on the topic from the "GPU Gems" book: A Toolkit for Computation on GPUs.If you followed the links above, then you've already come across some of the choices of programming models that are available today. Essentially, AMD is offering their ATI Stream technology accessible via a language they call Brook+; NVIDIA offers their CUDA platform which is accessible from CUDA C. Choosing either of those locks you into the GPU vendor and hence your code cannot run on systems with cards from the other vendor (e.g. imagine if your CPU code would run on Intel chips but not AMD chips). Having said that, both vendors plan to support a new emerging standard called OpenCL, which theoretically means your kernels can execute on any GPU that supports it. To learn more about all of these there is a website: gpgpu.org. The caveat about that site is that (currently) it completely ignores the Microsoft approach, which I touch on next.On Windows, there is already a cross-GPU-vendor way of programming GPUs and that is the DirectX API. Specifically, on Windows Vista and Windows 7, the DirectX 11 API offers a dedicated subset of the API for GPGPU programming: DirectCompute. You use this API on the CPU side, to set up and execute the kernels that run on the GPU. The kernels are written in a language called HLSL (High Level Shader Language). You can use DirectCompute with HLSL to write a "compute shader", which is the term DirectX uses for what I've been referring to in this post as a "kernel". For a comprehensive collection of links about this (including tutorials, videos and samples) please see my blog post: DirectCompute.Note that there are many efforts to build even higher level languages on top of DirectX that aim to expose GPGPU programming to a wider audience by making it as easy as today's mainstream programming models. I'll mention here just two of those efforts: Accelerator from MSR and Brahma by Ananth. Comments about this post welcome at the original blog.

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  • MSMQ messages using HTTP just won't get delivered

    - by John Breakwell
    I'm starting off the blog with a discussion of an unusual problem that has hit a couple of my customers this month. It's not a problem you'd expect to bump into and the solution is potentially painful. Scenario You want to make use of the HTTP protocol to send MSMQ messages from one machine to another. You have installed HTTP support for MSMQ and have addressed your messages correctly but they will not leave the outgoing queue. There is no configuration for HTTP support - setup has already done all that for you (although you may want to check the most recent "Installation of the MSMQ HTTP Support Subcomponent" section of MSMQINST.LOG to see if anything DID go wrong) - so you can't tweak anything. Restarting services and servers makes no difference - the messages just will not get delivered. The problem is documented and resolved by Knowledgebase article 916699 "The message may not be delivered when you use the HTTP protocol to send a message to a server that is running Message Queuing 3.0". It is unlikely that you would be able to resolve the problem without the assistance of PSS because there are no messages that can be seen to assist you and only access to the source code exposes the root cause. As this communication is over HTTP, the IIS logs would be a good place to start. POST entries are logged which show that connectivity is working and message delivery is being attempted: #Software: Microsoft Internet Information Services 6.0 #Version: 1.0 #Date: 2006-09-12 12:11:29 #Fields: date time s-sitename s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status 2006-09-12 12:12:12 W3SVC1 10.1.17.219 POST /msmq/private$/test - 80 - 10.2.200.3 - 200 0 0 If you capture the traffic with Network Monitor you can see the POST being sent to the server but you also see a response being returned to the client: HTTP: Response to Client; HTTP/1.1; Status Code = 500 - Internal Server Error "Internal Server Error" means we can probably stop looking at IIS and instead focus on the Message Queuing ISAPI extension (Mqise.dll). MSMQ 3.0 (Windows XP and Windows Server 2003) comes with error logging enabled by default but the log files are in binary format - MSMQ 2.0 generated logging in plain text. The symbolic information needed for formatting the files is not currently publicly available so log files have to be sent in to Microsoft PSS.  Although this does mean raising a support case, formatting the log files to text and returning them to the customer shouldn't take long. Obviously the engineer analyses them for you - I just want to point out that you can see the logging output in text format if you want it. The important entries in the log for this problem are: [7]b48.928 09/12/2006-13:20:44.552 [mqise GetNetBiosNameFromIPAddr] ERROR:Failed to get the NetBios name from the DNS name, error = 0xea [7]b48.928 09/12/2006-13:20:44.552 [mqise RPCToServer] ERROR:RPC call R_ProcessHTTPRequest failed, error code = 1702(RPC_S_INVALID_BINDING) which allow a Microsoft escalation engineer to check the MQISE source code to see what is going wrong. This problem according to the article occurs when the extension tries to bind to the local MSMQ service after the extension receives a POST request that contains an MSMQ message. MSMQ resolves the server name by using the DNS host name but the extension cannot bind to the service because the buffer that MSMQ uses to resolve the server name is too small - server names that are exactly 15 characters long will not fit. RPC exception 0x6a6 (RPC_S_INVALID_BINDING) occurs in the W3wp.exe process but the exception is handled and so you do not receive an error message. The workaround is to rename the MSMQ server to something less than 15 characters. If the problem has only just been noticed in a production environment - an application may have been modified to get through a newly-implemented firewall, for example - then renaming is going to be an issue. Other applications may need to be reinstalled or modified if server names are hard-coded or stored in the registry. The renaming may also break a company naming convention where the name is built up from something like location+department+number. If you want to learn more about MSMQ logging then check out Chapter 15 of the MSMQ FAQ. In fact, even if you DON'T want to learn anything about MSMQ logging you should read the FAQ anyway as there is a huge amount of useful information on known issues and the like.

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