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  • RegEx replace query to pick out wiki syntax

    - by Jeremy Thake
    I've got a string of HTML that I need to grab the "[Title|http://www.test.com]" pattern out of e.g. "dafasdfasdf, adfasd. [Test|http://www.test.com/] adf ddasfasdf [SDAF|http://www.madee.com/] assg ad" I need to replace "[Title|http://www.test.com]" this with "Title". What is the best away to approach this? I was getting close with: string test = "dafasdfasdf adfasd [Test|http://www.test.com/] adf ddasfasdf [SDAF|http://www.madee.com/] assg ad "; string p18 = @"(\[.*?|.*?\])"; MatchCollection mc18 = Regex.Matches(test, p18, RegexOptions.Singleline | RegexOptions.IgnoreCase); foreach (Match m in mc18) { string value = m.Groups[1].Value; string fulltag = value.Substring(value.IndexOf("["), value.Length - value.IndexOf("[")); Console.WriteLine("text=" + fulltag); } There must be a cleaner way of getting the two values out e.g. the "Title" bit and the url itself. Any suggestions?

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  • SEO friendly URLs (.htaccess)

    - by user317005
    http://www.domain.com/folder/file?x=1&y=2 Change to: http://www.domain.com/folder/file/1/2/ http://www.domain.com/folder/?x=1 Change to: http://www.domain.com/folder/1/ I tried: Options +FollowSymLinks RewriteEngine On RewriteRule ^folder/(.*)/$ folder/index.php?x=$1 [L] RewriteRule ^folder/file/(.*)/(.*)/$ folder/file.php?x=$1&y=$2 [L] but that doesn't work, does anyone have any idea why? when i take out the first rule, i can access the second one via: http://www.domain.com/folder/1/2/ but not: http://www.domain.com/folder/file/1/2/ god, i hope i am not confusing anyone who is reading this lol i hope it makes sense

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  • Parsing adobe Kuler RSS feed

    - by dezkev
    I have been trying to parse the below XML file (kuler rss feed). I have read the various posts on this site but am unable to piece them together. I specifically want to extract the child(or siblings) nodes of the element <kuler:themeItem>. However I am getting an exception : Namespace Manager or XsltContext needed. This query has a prefix, variable, or user-defined function. Pl help : C# 3.0 net framework 3.5 RSS feed snippet: <?xml version="1.0" encoding="UTF-8" ?> - <rss xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:kuler="http://kuler.adobe.com/kuler/API/rss/" xmlns:rss="http://blogs.law.harvard.edu/tech/rss" version="2.0"> - <channel> <title>kuler recent themes</title> <link>http://kuler.adobe.com/</link> <description>most recent themes published on kuler (1 to 20 of 332518)</description> <language>en-us</language> <pubDate>Wed, 07 Apr 2010 08:41:31 PST</pubDate> <lastBuildDate>Wed, 07 Apr 2010 08:41:31 PST</lastBuildDate> <docs>http://blogs.law.harvard.edu/tech/rss</docs> <generator>Kuler Services</generator> <managingEditor>[email protected]</managingEditor> <webMaster>[email protected]</webMaster> <recordCount>332518</recordCount> <startIndex>0</startIndex> <itemsPerPage>20</itemsPerPage> - <item> <title>Theme Title: Muted Graph</title> <link>http://kuler.adobe.com/index.cfm#themeID/856075</link> <guid>http://kuler.adobe.com/index.cfm#themeID/856075</guid> - <enclosure xmlns="http://www.solitude.dk/syndication/enclosures/"> <title>Muted Graph</title> - <link length="1" type="image/png"> <url>http://kuler-api.adobe.com/kuler/themeImages/theme_856075.png</url> </link> </enclosure> <description><img src="http://kuler-api.adobe.com/kuler/themeImages/theme_856075.png" /><br /> Artist: tischt<br /> ThemeID: 856075<br /> Posted: 04/07/2010<br /> Hex: F1E9B2, 3D3606, 2A3231, 4A0A07, 424431</description> - <kuler:themeItem> <kuler:themeID>856075</kuler:themeID> <kuler:themeTitle>Muted Graph</kuler:themeTitle> <kuler:themeImage>http://kuler-api.adobe.com/kuler/themeImages/theme_856075.png</kuler:themeImage> - <kuler:themeAuthor> <kuler:authorID>216099</kuler:authorID> <kuler:authorLabel>tischt</kuler:authorLabel> </kuler:themeAuthor> <kuler:themeTags /> <kuler:themeRating>0</kuler:themeRating> <kuler:themeDownloadCount>0</kuler:themeDownloadCount> <kuler:themeCreatedAt>20100407</kuler:themeCreatedAt> <kuler:themeEditedAt>20100407</kuler:themeEditedAt> - <kuler:themeSwatches> - <kuler:swatch> <kuler:swatchHexColor>F1E9B2</kuler:swatchHexColor> <kuler:swatchColorMode>rgb</kuler:swatchColorMode> <kuler:swatchChannel1>0.945098</kuler:swatchChannel1> <kuler:swatchChannel2>0.913725</kuler:swatchChannel2> <kuler:swatchChannel3>0.698039</kuler:swatchChannel3> <kuler:swatchChannel4>0.0</kuler:swatchChannel4> <kuler:swatchIndex>0</kuler:swatchIndex> </kuler:swatch> My Code so far: static void Main(string[] args) { const string feedUrl = "http://kuler-api.adobe.com/rss/get.cfm?listtype=recent&key=xxxx"; var doc = new XmlDocument(); var request = WebRequest.Create(feedUrl) as HttpWebRequest; using (var response = request.GetResponse() as HttpWebResponse) { var reader = new StreamReader(response.GetResponseStream()); doc.Load(reader); } XmlNodeList rsslist = doc.SelectNodes("//rss/channel/item/kuler:themeItem"); for (int i = 0; i < rsslist.Count; i++) { XmlNode rssdetail = rsslist.Item(i).SelectSingleNode("kuler:themeTitle"); string title = rssdetail.InnerText; Console.WriteLine(title); } } }

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  • video player for HTML 5 page not loading

    - by philippe
    I'm using VideoJS to as my video player for a project I've been working on. Basically I have a div, and I wanted to have the video player within that div, however when I load the page nothing happens, and the video is never played. In fact, the video is never loaded nor shown in the page. I basically copied the example from VideoJS' page. Any thoughts? <div class="video-js-box"> <!-- Using the Video for Everybody Embed Code http://camendesign.com/code/video_for_everybody --> <div style="position: absolute; top: 50px; left: 600px; display:none"> <video id="example_video_1" class="video-js vjs-default-skin" controls preload="auto" width="640" height="264" poster="http://video-js.zencoder.com/oceans-clip.png" data-setup='{"example_option":true}'> <source src="http://video-js.zencoder.com/oceans-clip.mp4" type='video/mp4'></source> <source src="http://video-js.zencoder.com/oceans-clip.webm" type='video/webm'>></source> <source src="http://video-js.zencoder.com/oceans-clip.ogv" type='video/ogg'></source> </video> <!-- Download links provided for devices that can't play video in the browser. --> <p class="vjs-no-video"><strong>Download Video:</strong> <a href="http://video-js.zencoder.com/oceans-clip.mp4">MP4</a>, <a href="http://video-js.zencoder.com/oceans-clip.webm">WebM</a>, <a href="http://video-js.zencoder.com/oceans-clip.ogv">Ogg</a><br> <!-- Support VideoJS by keeping this link. --> <a href="http://videojs.com">HTML5 Video Player</a> by VideoJS </p> </div> <div style="clear:both;"></div> </div><!--main-->

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  • [perl] Efficient processing of large text

    - by jesper
    I have text file that contains over one million urls. I have to process this file in order to assign urls to groups, based on host address: { 'http://www.ex1.com' = ['http://www.ex1.com/...', 'http://www.ex1.com/...', ...], 'http://www.ex2.com' = ['http://www.ex2.com/...', 'http://www.ex2.com/...', ...] } My current basic solution takes about 600mb of RAM to do this (size of file is about 300mb). Could You provide some more efficient ways? My current solution simply reads line by line, extracts host address by regex and put url into hash.

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  • HTML, CSS: how can I merge these divs in order to use float:left property on their children ?

    - by Patrick
    hi, I've 2 sets of thumbnails and in each set I'm displaying them one nearby each other in 4 columns using float:left. I would like to "merge" the 2 sets (but I cannot change the html code) because I want the thumbnails of the second set floating right after the last thumbnail of the first set. In other terms, if in the last row there are only 2 thumbnails and the last 2 columns are empty, the thumbnails of the second set should fill the empty columns of the last row of the first set. This is the code... <div class="field field-type-filefield field-field-image"> <div class="field-items"> <div class="field-item odd"> <a rel="lightbox[field_image][First image&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/images/LPrisPetjong.jpeg" class="lightbox-processed"><img width="89" height="89" title="" alt="First image" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryImage/files/projects/Stalkshow/images/LPrisPetjong.jpeg"></a> </div> <div class="field-item even"> <a rel="lightbox[field_image][Second image&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/images/SeoulLEDScreen2a.jpeg" class="lightbox-processed"><img width="89" height="89" title="" alt="Second image" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryImage/files/projects/Stalkshow/images/SeoulLEDScreen2a.jpeg"></a> </div> <div class="field-item odd"> <a rel="lightbox[field_image][Third image&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/images/SeoulSKT6.jpeg" class="lightbox-processed"><img width="89" height="89" title="" alt="Third image" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryImage/files/projects/Stalkshow/images/SeoulSKT6.jpeg"></a> </div> </div> <!-- second set --> <div class="field field-type-filefield field-field-video"> <div class="field-items"> <div class="field-item odd"> <a rel="lightbox[field_video][Video Number 1&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/videos/StalkSeoul8d1Mbps.flv" class="lightbox-processed"><img title="" alt="Video Number 1" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryVideo/files/projects/Stalkshow/videos/StalkSeoul8d1Mbps.flv"></a> </div> <div class="field-item even"> <a rel="lightbox[field_video][Video Number 2&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/videos/stalkshowdvd21Mbps.flv" class="lightbox-processed"><img title="" alt="Video Number 2" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryVideo/files/projects/Stalkshow/videos/stalkshowdvd21Mbps.flv"></a> </div> <div class="field-item odd"> <a rel="lightbox[field_video][Video Number 3&lt;br /&gt;&lt;br /&gt;&lt;a href=&quot;/lancelmaat/content/stalkshow&quot; id=&quot;node_link_text&quot; class=&quot;active&quot;&gt;View Image Details&lt;/a&gt;]" href="http://localhost/lancelmaat/sites/default/files/files/projects/Stalkshow/videos/StalkShowMoscow1Mbps.flv" class="lightbox-processed"><img title="" alt="Video Number 3" src="http://localhost/lancelmaat/sites/default/files/imagecache/galleryVideo/files/projects/Stalkshow/videos/StalkShowMoscow1Mbps.flv"></a> </div> </div> </div> How can I merge these divs in order to use float:left property on their children ? thanks

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  • Javascript to detect where newly opened window came from

    - by teggy
    Let's say I have a page, http://mydomain.com/mypage.html, with a "Back to page" link. This link should take the user back to the page where they came from only if the previous page URL matches one of the following: http://mydomain.com/one.html, http://mydomain.com/two.html, and http://mydomain.com/three.html. Otherwise, it would take the user back to the homepage, http://mydomain.com. I would like the "Back to page" link to also take the user back to the homepage when http://mydomain.com/mypage.html is pasted onto the browser. How can i accomplish this with Javascript. Thanks!

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  • How to use window.location.replace javascript?

    - by william
    My URLs http://www.mysite.com/folder1/page1.aspx http://www.mysite.com/folder1/page1.aspx?id=1 http://www.mysite.com/folder1/page1.aspx?id=1&dt=20111128 Redirecting Page http://www.mysite.com/folder1/page2.aspx I want to redirect from page1.aspx to page2.aspx How to write a javascript in page1.aspx? window.location.replace("/page2.aspx"); window.location.replace("../page2.aspx"); window.location.replace("~/page2.aspx"); First 2 gave me this. http://www.mysite.com/page2.aspx Last 1 gave me this. http://www.mysite.com/folder1/~/page2.aspx What is the correct way to use?

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  • Gui for viewing Apache headers

    - by user49249
    Is there any GUI for viewing Apache headers which are being served by a chain of Reverse Proxy Servers. I have a cloud which uses a few Proxy Servers in between the client and actual server which has to serve the original request. All servers are Unix Servers. And if there is a problem which I do not get a clue to then to be able to post them here downloading and doing an ftp of those headers with all the logs , loging in each time to each proxy server and Opening the browser and exporting the X display to some remote server each time from the chain and then observing HTTP_RESPONSES and checking the request from each of those servers and then posting log with configuration and response takes at least 2-3 hours to type an email. Is there a shorter way to do so?

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  • pound character(#) in asp.net ajax

    - by Praveen Prasad
    iam using asp.net and asp.net-ajax every thing happens on browser urls are of format http://somepage#page1 http://somepage#page2 http://somepage#page3 now all these urls are in a secured folder when logged in user directly types (or use bookmark) a url like below, he is shown that page http://somepage#page2 -- (bookmarked url lying in secured folder) now when a user user who is not logged in directly type above url he gets redirected to login page but on login page in redirection url iam unable to read characters after pound (#) sign. iam just getting redirection url= "http://somepage" while i want it to be "http://somepage#page2" is there is any way i can do this

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  • How do I select all parenting items based on a given node's attribute in php's xPath?

    - by bakkelun
    I have an XML feed that looks something like this (excerpt): <channel> <title>Channel Name</title> <link>Link to the channel</link> <item> <title>Heading 1</title> <link>http://www.somelink.com?id=100</link> <description><![CDATA[ Text here ]]></description> <publishDate>Fri, 03 Apr 2009 10:00:00</publishDate> <guid>http://www.somelink.com/read-story-100</guid> <category domain="http://www.somelink.com/?category=4">Category 1</category> </item> <item> <title>Heading 2</title> <link>http://www.somelink.com?id=110</link> <description><![CDATA[ Text here ]]></description> <publishDate>Fri, 03 Apr 2009 11:00:00</publishDate> <guid>http://www.somelink.com/read-story-110</guid> <category domain="http://www.somelink.com/?category=4">Category 1</category> </item> <channel> That's the rough of it. I'm using this piece of PHP (excerpt): $xml = simple_xml_load_file($xmlFile); $xml->xpath($pattern); Now I want to get all ITEM-nodes (with their children) based on that pesky "domain" attribute in the category node, but no matter what I try it does-not-work. The closest I got was "//category[@domain= 'http://www.somelink.com/?category=4']" The expression I tried gave me this result: [0] => SimpleXMLElement Object ( [@attributes] => Array ( [domain] => http://www.somelink.com/?category=4 ) [0] => Category 1 [1] => SimpleXMLElement Object ( [@attributes] => Array ( [domain] => http://www.somelink.com/?category=4 ) [0] => Category 1 The expression should contain all childrens of the two items in the example, but as you can see only the info in the category node is present, I want all the item nodes. Any help would be highly appreciated.

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  • jsjac openfire chat issue

    - by user1246979
    I am trying to use openFire + jsjac for my application as chat option. I have installed openfire in my local machine and it is running fine on http://127.0.0.1:4040/ and i have downloaded jsjac version 1-3-4. 1) when I run sampleClient.html file directly [URL: C:\tomcat\webapps\jsjac\examples\simpleclient.html] I am able to connect sampleClient with openFire. Select Http Binding http Base : http://127.0.0.1:7070/http-bind/ jabber server : 127.0.0.1 username : admin password : ** 2) But when I put jsjac folder in tomcat/webapps/ directory, I access sampleClient through http://127.0.0.1:8080/jsjac/examples/sampleClient.html, at that time using above setting (which i have used in step 1) it is giving error "Service unavailable". In step 1 when though I am connected with openFire, when I send a message it displays only "message received from admin@localhost", but it does not display the actual message.. I need your advice on these problems... Thanks.

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  • Apache/mod_rewrite > Tomcat encoding %26 and "&"...

    - by user293479
    Apache is the front-end to my web app then I use mod_rewrite to proxy the request to JBoss. So far this sounds pretty standard, but the problem I am having is: if I access the app directly through jboss @ http://localhost:8080/app/page?raw=foo%26bar&page=1: request.getParameter("raw") = foo&bar If I access the app through Apache @ http://localhost/foo%26bar&page=1 request.getParameter("raw") = foo So somewhere along the way, the %26 is lost and replaced with an & which chops the raw variable. This is my Apache rewrite rule. RewriteRule ^/(.*) \ http://localhost:8080/app/home?raw=$1 [L,P] The Apache access log shows: http://localhost/foo%26bar&page=1 And the rewrite log shows: http://localhost:8080/app/home?raw=foo&bar&page=1 But I want the request to be: http://localhost:8080/app/home?raw=foo%26bar&page=1 I am pretty sure that this also occurs with slashes / too so to me this is some sort of encoding issue. Is there a way to proxy the URL untouched? Can't seem to figure this one out.

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  • ASP.NET GZip Encoding Caveats

    - by Rick Strahl
    GZip encoding in ASP.NET is pretty easy to accomplish using the built-in GZipStream and DeflateStream classes and applying them to the Response.Filter property.  While applying GZip and Deflate behavior is pretty easy there are a few caveats that you have watch out for as I found out today for myself with an application that was throwing up some garbage data. But before looking at caveats let’s review GZip implementation for ASP.NET. ASP.NET GZip/Deflate Basics Response filters basically are applied to the Response.OutputStream and transform it as data is written to it through the ASP.NET Response object. So a Response.Write eventually gets written into the output stream which if a filter is also written through the filter stream’s interface. To perform the actual GZip (and Deflate) encoding typically used by Web pages .NET includes the GZipStream and DeflateStream stream classes which can be readily assigned to the Repsonse.OutputStream. With these two stream classes in place it’s almost trivially easy to create a couple of reusable methods that allow you to compress your HTTP output. In my standard WebUtils utility class (from the West Wind West Wind Web Toolkit) created two static utility methods – IsGZipSupported and GZipEncodePage – that check whether the client supports GZip encoding and then actually encodes the current output (note that although the method includes ‘Page’ in its name this code will work with any ASP.NET output). /// <summary> /// Determines if GZip is supported /// </summary> /// <returns></returns> public static bool IsGZipSupported() { string AcceptEncoding = HttpContext.Current.Request.Headers["Accept-Encoding"]; if (!string.IsNullOrEmpty(AcceptEncoding) && (AcceptEncoding.Contains("gzip") || AcceptEncoding.Contains("deflate"))) return true; return false; } /// <summary> /// Sets up the current page or handler to use GZip through a Response.Filter /// IMPORTANT: /// You have to call this method before any output is generated! /// </summary> public static void GZipEncodePage() { HttpResponse Response = HttpContext.Current.Response; if (IsGZipSupported()) { string AcceptEncoding = HttpContext.Current.Request.Headers["Accept-Encoding"]; if (AcceptEncoding.Contains("deflate")) { Response.Filter = new System.IO.Compression.DeflateStream(Response.Filter, System.IO.Compression.CompressionMode.Compress); Response.Headers.Remove("Content-Encoding"); Response.AppendHeader("Content-Encoding", "deflate"); } else { Response.Filter = new System.IO.Compression.GZipStream(Response.Filter, System.IO.Compression.CompressionMode.Compress); Response.Headers.Remove("Content-Encoding"); Response.AppendHeader("Content-Encoding", "gzip"); } } } As you can see the actual assignment of the Filter is as simple as: Response.Filter = new DeflateStream(Response.Filter, System.IO.Compression.CompressionMode.Compress); which applies the filter to the OutputStream. You also need to ensure that your response reflects the new GZip or Deflate encoding and ensure that any pages that are cached in Proxy servers can differentiate between pages that were encoded with the various different encodings (or no encoding). To use this utility function now is trivially easy: In any ASP.NET code that wants to compress its Response output you simply use: protected void Page_Load(object sender, EventArgs e) { WebUtils.GZipEncodePage(); Entry = WebLogFactory.GetEntry(); var entries = Entry.GetLastEntries(App.Configuration.ShowEntryCount, "pk,Title,SafeTitle,Body,Entered,Feedback,Location,ShowTopAd", "TEntries"); if (entries == null) throw new ApplicationException("Couldn't load WebLog Entries: " + Entry.ErrorMessage); this.repEntries.DataSource = entries; this.repEntries.DataBind(); } Here I use an ASP.NET page, but the above WebUtils.GZipEncode() method call will work in any ASP.NET application type including HTTP Handlers. The only requirement is that the filter needs to be applied before any other output is sent to the OutputStream. For example, in my CallbackHandler service implementation by default output over a certain size is GZip encoded. The output that is generated is JSON or XML and if the output is over 5k in size I apply WebUtils.GZipEncode(): if (sbOutput.Length > GZIP_ENCODE_TRESHOLD) WebUtils.GZipEncodePage(); Response.ContentType = ControlResources.STR_JsonContentType; HttpContext.Current.Response.Write(sbOutput.ToString()); Ok, so you probably get the idea: Encoding GZip/Deflate content is pretty easy. Hold on there Hoss –Watch your Caching Or is it? There are a few caveats that you need to watch out for when dealing with GZip content. The fist issue is that you need to deal with the fact that some clients don’t support GZip or Deflate content. Most modern browsers support it, but if you have a programmatic Http client accessing your content GZip/Deflate support is by no means guaranteed. For example, WinInet Http clients don’t support GZip out of the box – it has to be explicitly implemented. Other low level HTTP clients on other platforms too don’t support GZip out of the box. The problem is that your application, your Web Server and Proxy Servers on the Internet might be caching your generated content. If you return content with GZip once and then again without, either caching is not applied or worse the wrong type of content is returned back to the client from a cache or proxy. The result is an unreadable response for *some clients* which is also very hard to debug and fix once in production. You already saw the issue of Proxy servers addressed in the GZipEncodePage() function: // Allow proxy servers to cache encoded and unencoded versions separately Response.AppendHeader("Vary", "Content-Encoding"); This ensures that any Proxy servers also check for the Content-Encoding HTTP Header to cache their content – not just the URL. The same thing applies if you do OutputCaching in your own ASP.NET code. If you generate output for GZip on an OutputCached page the GZipped content will be cached (either by ASP.NET’s cache or in some cases by the IIS Kernel Cache). But what if the next client doesn’t support GZip? She’ll get served a cached GZip page that won’t decode and she’ll get a page full of garbage. Wholly undesirable. To fix this you need to add some custom OutputCache rules by way of the GetVaryByCustom() HttpApplication method in your global_ASAX file: public override string GetVaryByCustomString(HttpContext context, string custom) { // Override Caching for compression if (custom == "GZIP") { string acceptEncoding = HttpContext.Current.Response.Headers["Content-Encoding"]; if (string.IsNullOrEmpty(acceptEncoding)) return ""; else if (acceptEncoding.Contains("gzip")) return "GZIP"; else if (acceptEncoding.Contains("deflate")) return "DEFLATE"; return ""; } return base.GetVaryByCustomString(context, custom); } In a page that use Output caching you then specify: <%@ OutputCache Duration="180" VaryByParam="none" VaryByCustom="GZIP" %> To use that custom rule. It’s all Fun and Games until ASP.NET throws an Error Ok, so you’re up and running with GZip, you have your caching squared away and your pages that you are applying it to are jamming along. Then BOOM, something strange happens and you get a lovely garbled page that look like this: Lovely isn’t it? What’s happened here is that I have WebUtils.GZipEncode() applied to my page, but there’s an error in the page. The error falls back to the ASP.NET error handler and the error handler removes all existing output (good) and removes all the custom HTTP headers I’ve set manually (usually good, but very bad here). Since I applied the Response.Filter (via GZipEncode) the output is now GZip encoded, but ASP.NET has removed my Content-Encoding header, so the browser receives the GZip encoded content without a notification that it is encoded as GZip. The result is binary output. Here’s what Fiddler says about the raw HTTP header output when an error occurs when GZip encoding was applied: HTTP/1.1 500 Internal Server Error Cache-Control: private Content-Type: text/html; charset=utf-8 Date: Sat, 30 Apr 2011 22:21:08 GMT Content-Length: 2138 Connection: close ?`I?%&/m?{J?J??t??` … binary output striped here Notice: no Content-Encoding header and that’s why we’re seeing this garbage. ASP.NET has stripped the Content-Encoding header but left our filter intact. So how do we fix this? In my applications I typically have a global Application_Error handler set up and in this case I’ve been using that. One thing that you can do in the Application_Error handler is explicitly clear out the Response.Filter and set it to null at the top: protected void Application_Error(object sender, EventArgs e) { // Remove any special filtering especially GZip filtering Response.Filter = null; … } And voila I get my Yellow Screen of Death or my custom generated error output back via uncompressed content. BTW, the same is true for Page level errors handled in Page_Error or ASP.NET MVC Error handling methods in a controller. Another and possibly even better solution is to check whether a filter is attached just before the headers are sent to the client as pointed out by Adam Schroeder in the comments: protected void Application_PreSendRequestHeaders() { // ensure that if GZip/Deflate Encoding is applied that headers are set // also works when error occurs if filters are still active HttpResponse response = HttpContext.Current.Response; if (response.Filter is GZipStream && response.Headers["Content-encoding"] != "gzip") response.AppendHeader("Content-encoding", "gzip"); else if (response.Filter is DeflateStream && response.Headers["Content-encoding"] != "deflate") response.AppendHeader("Content-encoding", "deflate"); } This uses the Application_PreSendRequestHeaders() pipeline event to check for compression encoding in a filter and adjusts the content accordingly. This is actually a better solution since this is generic – it’ll work regardless of how the content is cleaned up. For example, an error Response.Redirect() or short error display might get changed and the filter not cleared and this code actually handles that. Sweet, thanks Adam. It’s unfortunate that ASP.NET doesn’t natively clear out Response.Filters when an error occurs just as it clears the Response and Headers. I can’t see where leaving a Filter in place in an error situation would make any sense, but hey - this is what it is and it’s easy enough to fix as long as you know where to look. Riiiight! IIS and GZip I should also mention that IIS 7 includes good support for compression natively. If you can defer encoding to let IIS perform it for you rather than doing it in your code by all means you should do it! Especially any static or semi-dynamic content that can be made static should be using IIS built-in compression. Dynamic caching is also supported but is a bit more tricky to judge in terms of performance and footprint. John Forsyth has a great article on the benefits and drawbacks of IIS 7 compression which gives some detailed performance comparisons and impact reviews. I’ll post another entry next with some more info on IIS compression since information on it seems to be a bit hard to come by. Related Content Built-in GZip/Deflate Compression in IIS 7.x HttpWebRequest and GZip Responses © Rick Strahl, West Wind Technologies, 2005-2011Posted in ASP.NET   IIS7  

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  • Problem to install Apache 2.4.2 in Ubuntu 12.04

    - by Michael
    I followed these steps to install Apache 2.4.2 in Ubuntu 12.04, but it seems Apache is not installed, here's what I did (I followed the steps in this site http://www.discusswire.com/apache-2-4-installation-ubuntu/): sudo apt-get install build-essential sudo apt-get build-dep apache2 wget http://apache.mirrors.pair.com/httpd/httpd-2.4.2.tar.gz tar -xzvf httpd-2.4.2.tar.gz && cd httpd-2.4.2 sudo ./configure --prefix=/usr/local/apache2 --enable-mods-shared=all --enable-deflate --enable-proxy --enable-proxy-balancer --enable-proxy-http --with-mpm=prefork sudo make sudo make install when I tried to start by issuing sudo /usr/local/apache2/bin/apachectl start at terminal, I got the following warning: "AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message" and when I typed top at terminal, the apache is not there. I also tried to go to http://localhost/ or 127.0.0.1 or even 127.0.1.1 it showed "Can't establish connection to server ..." message. ps: I checked the error log and it showed "[Fri Jul 27 15:49:00.703901 2012] [proxy_balancer:emerg] [pid 20781] AH01177: Failed to lookup provider 'shm' for 'slotmem': is mod_slotmem_shm loaded?? [Fri Jul 27 15:49:00.704083 2012] [:emerg] [pid 20781] AH00020: Configuration Failed, exiting" What I'm missing? Thanks Michael

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  • Advanced reporting in Oracle Service Bus

    - by [email protected]
    v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 21 false false false FR-BE X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tableau Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Reporting in OSB is useful, it allows you to audit message going through OSB. The service bus console allows you to view the content that you reported. To report data you simply use the Report action in your proxy. The action itself is rather straightforward. You specify the content to report ($body for example), an optional key for easier search (for example the id of the record) and that's it. Sometimes though, what you want to is a bit more complicated. I recently had a case where the key was built from the message type (XML) and the id of the message. Seems quite simple but the id could be any element anywhere in the message depending on its type. This could be handled by 'if' statement but adding new cases would mean changing the proxy service and if you have lots of message types this can get boring so I wanted the solution to be as dynamic as possible (read "just change a configuration file and that's it"). The following entry details how you can make this dynamic in your proxy by using XQuery/XSLT.   First step the XQuery We're going to use an XQuery to make the mapping between the XML message type and the location of the identifier in it. We assume here that the message type is the first node of the input XML and use a rather simple Xpath to find the identifier.  The XQuery looks like this for two messages : <reportmapping>                 <row>                                <logical>messageType1</logical>                                <type>MT1</type>                                <reportingreferencelocation>//customID</reportingreferencelocation>                 </row>                 <row>                                <logical>messageType2</logical>                                <type>MT2</type>                                <reportingreferencelocation>//theOtherIDLocation</reportingreferencelocation>                 </row>   </reportmapping>   Second step the XSLT To get the identifier value of the dynamic path, we're going to use an XSLT transformation. This XSLT takes an XML parameter as input which contains our xpath (coming from the previous XQuery). The XSLT looks like this : <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xalan="http://xml.apache.org/xalan">               <xsl:param name="PathToNode"/>               <xsl:template match="/">                             <IDVALUE>                                           <xsl:value-of select="xalan:evaluate($PathToNode/reportingreferencelocation)"/>                             </ IDVALUE >               </xsl:template> </xsl:stylesheet> (note the use of a xalan function here. Xalan is the XSLT processor used in weblogic server)   Last step, the proxy service We're now going to wire everything in the proxy service. First we assign the XQuery to a variable. We then get the entry in the XQuery corresponding to the record we're treating. We're then extracting the id of the message using the XSLT transformation Final assign is to built the final variable that will be used as the reporting key. The report action is then called with this variable. Everything is setup. We're now ready to test.   Testing the solution Using the test console, we're sending our first XML ... <messageType1>                 <sender>test console 1</sender>                 <customID>ID12345</customID >                 <content>                                 <field1>value of field 1</field1>                 </content> </messageType1>   ... and a second one of another supported type <messageType2>                 <header>                                 <theOtherIDLocation >ID67890</theOtherIDLocation >                 </header> <body>                                <data>Test data</data>                 </body> </messageType2>   Reporting result is :  Conclusion Report is done as expected. Now if a new message type must be supported we only have to modify the XQuery and nothing at the proxy service level.   Sample project attached to this entry.sbconfig-dynamicReport.jar  

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  • Modular Web App Network Architecture

    - by nairware
    Assuming that I am dealing with dedicated physical servers or VPSs, is it conceivable and does it make sense to have distinct servers setup with the following roles to host a web application? Reverse Proxy Web server Application server Database server Specific points of interest: I am confused how to even separate the web and application servers. My understanding was that such 3-tier architectures were feasible. It is unclear to me if the app server would reside directly between the web and database server, or if the web server could directly interact with the database as well. The app server could either do the computational heavy-lifting on behalf of the app server or it could do heavy-lifting plus control all of the business logic (as implied in the diagram above, thus denying the web server of direct database access). I am also unsure what role the reverse proxy (ex. nginx) could and should fulfill as a web server, given the above mentioned setup. I know that nginx has web server features. But I do not know if it makes sense to have the reverse proxy be its own VPS, given that the web server–in theory–would be separate from the app server.

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  • NPM not installing dependencies?

    - by neezer
    Having trouble getting NPM to install dependencies with npm install -d in my project directory with a defined package.json file. Here's my package.json: https://gist.github.com/3068312 And after wiping my project root's node modules folder (rm -rf node_modules), I run npm install -d in my project root and am greeted with this: (ssh) /vagrant git:master ? npm install -d npm info it worked if it ends with ok npm info using [email protected] npm info using [email protected] npm info preinstall [email protected] npm http GET https://registry.npmjs.org/sinon npm http GET https://registry.npmjs.org/underscore npm http GET https://registry.npmjs.org/mocha npm http GET https://registry.npmjs.org/request npm http 304 https://registry.npmjs.org/sinon npm http 304 https://registry.npmjs.org/underscore npm http 304 https://registry.npmjs.org/mocha npm http 304 https://registry.npmjs.org/request npm info into /vagrant [email protected] npm info into /vagrant [email protected] npm info into /vagrant [email protected] npm info into /vagrant [email protected] npm info installOne [email protected] npm info installOne [email protected] npm info installOne [email protected] npm info installOne [email protected] npm info unbuild /vagrant/node_modules/underscore npm info unbuild /vagrant/node_modules/mocha npm info unbuild /vagrant/node_modules/sinon npm info unbuild /vagrant/node_modules/request npm ERR! error installing [email protected] npm info unbuild /vagrant/node_modules/underscore npm ERR! error rolling back [email protected] Error: UNKNOWN, unknown error '/vagrant/node_modules/underscore' npm ERR! Error: ENOENT, no such file or directory '/vagrant/node_modules/underscore/package.json' npm ERR! You may report this log at: npm ERR! <http://bugs.debian.org/npm> npm ERR! or use npm ERR! reportbug --attach /vagrant/npm-debug.log npm npm ERR! npm ERR! System Linux 3.2.0-23-generic npm ERR! command "node" "/usr/bin/npm" "install" "-d" npm ERR! cwd /vagrant npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! path /vagrant/node_modules/underscore/package.json npm ERR! code ENOENT npm ERR! message ENOENT, no such file or directory '/vagrant/node_modules/underscore/package.json' npm ERR! errno {} npm ERR! error installing [email protected] npm info unbuild /vagrant/node_modules/request npm ERR! error rolling back [email protected] Error: UNKNOWN, unknown error '/vagrant/node_modules/request' npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /vagrant/npm-debug.log npm not ok If I rerun npm install -d, the error changes to whatever the next package is... if I keep running it it over and over again, it eventually doesn't complain anymore and outputs: (ssh) /vagrant git:master ? npm install -d npm info it worked if it ends with ok npm info using [email protected] npm info using [email protected] npm info preinstall [email protected] npm info build /vagrant npm info linkStuff [email protected] npm info install [email protected] npm info postinstall [email protected] npm info ok However, none of the dependencies for any of these packages get installed. For instance, cheerio has a few dependencies, so when I try running my test suite, I'm greeted with: (ssh) /vagrant git:master ? mocha --compilers coffee:coffee-script --watch spec/* node.js:201 throw e; // process.nextTick error, or 'error' event on first tick ^ Error: Cannot find module 'cheerio-select' at Function._resolveFilename (module.js:332:11) at Function._load (module.js:279:25) at Module.require (module.js:354:17) What gives? I'm on Ubuntu Precise64 in a Vagrant virtual box.

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  • Problems connecting to WCF Service via NetNamedPipeBinding

    - by John
    I'm having trouble figuring out how to get a named pipe WCF service to work. The service is in a seperate assembly from the executable. The config looks like this: <system.serviceModel> <bindings> <netNamedPipeBinding> <binding name="NoSecurityIPC"> <security mode="None" /> </binding> </netNamedPipeBinding> </bindings> <client> <endpoint name="internal" address="channel1" binding="netNamedPipeBinding" bindingConfiguration="NoSecurityIPC" contract="conplement.TimeService.ICpTimeService" /> </client> <services> <service name="cpTimeService"> <host> <baseAddresses> <add baseAddress="net.pipe://localhost/" /> </baseAddresses> </host> <endpoint address="channel1" binding="netNamedPipeBinding" bindingConfiguration="NoSecurityIPC" contract="conplement.TimeService.ICpTimeService" /> </service> </services> </system.serviceModel> I'm using a ChannelFactory to create a proxy to access the service host: ServiceHost h = new ServiceHost(typeof(TimeService), new Uri("net.pipe://localhost/")); h.AddServiceEndpoint(typeof(ITimeService), new NetNamedPipeBinding("NoSecurityIPC"), "net.pipe://localhost/"); h.Open(); ChannelFactory<ITimeService> factory = new ChannelFactory<ITimeService>("channel1", new EndpointAddress(new Uri("net.pipe://localhost/"))); ICpTimeService proxy = factory.CreateChannel(); using (proxy as IDisposable) { this.ds = proxy.LoadData(); } I'm not sure what I'm doing wrong when I create the ChannelFactory. It can't seem to find the "channel1" in the config. When I create my binding manually and pass it to the ChannelFactory constructor, the factory and the proxy are created but the call to the LoadData() fails (times out). Can anyone see what I'm doing wrong here?

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  • Properly clean up excel interop objects revisited: Wrapper objects

    - by chiccodoro
    Hi all, Excel 2007 Hangs When Closing via .NET How to properly clean up Excel interop objects in C# How to properly clean up interop objects in C# All of these struggle with the problem that C# does not release the Excel COM objects properly after using them. There are mainly two directions of working around this issue: Kill the Excel process when Excel is not used anymore. Take care to assign each COM object used explicitly to a variable and to Marshal.ReleaseComObject all of these. Some have stated that 2 is too tedious and there is always some uncertainty whether you forget to stick to this rule at some places in the code. Still 1 seems dirty and dangerous to me, also I could imagine that in an environment with restricted access killing processes is not allowed. So I've been thinking about solving 2 by creating another proxy object model which mimics the Excel object model (for me, it would suffice to implement the objects I actually need). The principle would look as follows: Each Excel Interop class has its proxy which wraps an object of that class. The proxy releases the COM object in its destructor. The proxy mimics the interface of the Interop class (maybe by inheriting it). Any methods that usually return another COM object return a proxy instead. The other methods simply delegate the implementation to the inner COM object. This is a rough sketch of the code: public class Application : Microsoft.Office.Interop.Excel.Application { private Microsoft.Office.Interop.Excel.Application innerApplication = new Microsoft.Office.Interop.Excel.Application innerApplication(); ~Application() { Marshal.ReleaseCOMObject(innerApplication); } public Workbooks Workbooks { get { return new Workbooks(innerApplication.Workbooks); } } } public class Workbooks { private Microsoft.Office.Interop.Excel.Workbooks innerWorkbooks; Workbooks(Microsoft.Office.Interop.Excel.Workbooks innerWorkbooks) { this.innerWorkbooks = innerWorkbooks; } ~Workbooks() { Marshal.ReleaseCOMObject(innerWorkbooks); } } My questions to you are in particular: Who finds this a bad idea and why? Who finds this a gread idea? If so, why hasn't anybody implemented/published such a model yet? Just due to the effort, or am I missing a killing problem with that idea? Is it impossible/bad/dangerous to do the ReleaseCOMObject in the destructor? (I've only seen proposals to put it in a Dispose() rather than in a destructor - why?) If the approach makes sense, any suggestions to improve it?

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  • GlassFish build failed

    - by hp1
    Hello, Each time I try to deploy my server side code, the build fails. If I try to restart my machine, the build is successful but fails later when I try to build the subsequent times. I get the following Severe messages when I attempt to build: SEVERE: "IOP00410216: (COMM_FAILURE) Unable to create IIOP listener on the specified host/port: localhost/3820" org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 216 completed: No WARNING: Can not find resource bundle for this logger. class name that failed: org.glassfish.enterprise.iiop.impl.IIOPSSLSocketFactory WARNING: Exception getting SocketInfo java.lang.RuntimeException: Orb initialization eror WARNING: "IOP02310202: (OBJ_ADAPTER) Error in connecting servant to ORB" org.omg.CORBA.OBJ_ADAPTER: vmcid: SUN minor code: 202 completed: No Following are the details for the severe method: SEVERE: "IOP00410216: (COMM_FAILURE) Unable to create IIOP listener on the specified host/port: localhost/3820" org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 216 completed: No at com.sun.corba.ee.impl.logging.ORBUtilSystemException.createListenerFailed(ORBUtilSystemException.java:3835) at com.sun.corba.ee.impl.logging.ORBUtilSystemException.createListenerFailed(ORBUtilSystemException.java:3855) at com.sun.corba.ee.impl.transport.SocketOrChannelAcceptorImpl.initialize(SocketOrChannelAcceptorImpl.java:98) at com.sun.corba.ee.impl.transport.CorbaTransportManagerImpl.getAcceptors(CorbaTransportManagerImpl.java:247) at com.sun.corba.ee.impl.transport.CorbaTransportManagerImpl.addToIORTemplate(CorbaTransportManagerImpl.java:264) at com.sun.corba.ee.spi.oa.ObjectAdapterBase.initializeTemplate(ObjectAdapterBase.java:131) at com.sun.corba.ee.impl.oa.toa.TOAImpl.<init>(TOAImpl.java:130) at com.sun.corba.ee.impl.oa.toa.TOAFactory.getTOA(TOAFactory.java:114) at com.sun.corba.ee.impl.orb.ORBImpl.connect(ORBImpl.java:1740) at com.sun.corba.ee.spi.presentation.rmi.StubAdapter.connect(StubAdapter.java:212) at com.sun.corba.ee.impl.orb.ORBImpl.getIOR(ORBImpl.java:2194) at com.sun.corba.ee.impl.orb.ORBImpl.getFVDCodeBaseIOR(ORBImpl.java:966) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.glassfish.gmbal.generic.FacetAccessorImpl.invoke(FacetAccessorImpl.java:126) at org.glassfish.gmbal.impl.MBeanImpl.invoke(MBeanImpl.java:440) at org.glassfish.gmbal.impl.AttributeDescriptor.get(AttributeDescriptor.java:144) at org.glassfish.gmbal.impl.MBeanSkeleton.getAttribute(MBeanSkeleton.java:569) at org.glassfish.gmbal.impl.MBeanSkeleton.getAttributes(MBeanSkeleton.java:625) at org.glassfish.gmbal.impl.MBeanImpl.getAttributes(MBeanImpl.java:389) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttributes(DefaultMBeanServerInterceptor.java:726) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttributes(JmxMBeanServer.java:665) at org.glassfish.admin.amx.util.jmx.MBeanProxyHandler.getAttributes(MBeanProxyHandler.java:273) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler.attributesMap(AMXProxyHandler.java:1193) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler.attributesMap(AMXProxyHandler.java:1203) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler.handleSpecialMethod(AMXProxyHandler.java:414) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler._invoke(AMXProxyHandler.java:792) at org.glassfish.admin.amx.core.proxy.AMXProxyHandler.invoke(AMXProxyHandler.java:526) at $Proxy107.attributesMap(Unknown Source) at org.glassfish.admin.amx.core.AMXValidator._validate(AMXValidator.java:642) at org.glassfish.admin.amx.core.AMXValidator.validate(AMXValidator.java:1298) at org.glassfish.admin.amx.impl.mbean.ComplianceMonitor$ValidatorThread.doRun(ComplianceMonitor.java:256) at org.glassfish.admin.amx.impl.mbean.ComplianceMonitor$ValidatorThread.run(ComplianceMonitor.java:227) Caused by: java.net.BindException: Address already in use at sun.nio.ch.Net.bind(Native Method) at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:119) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:52) at org.glassfish.enterprise.iiop.impl.IIOPSSLSocketFactory.createServerSocket(IIOPSSLSocketFactory.java:293) at com.sun.corba.ee.impl.transport.SocketOrChannelAcceptorImpl.initialize(SocketOrChannelAcceptorImpl.java:91) ... 32 more

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  • WCF XmlSerializer assembly not speeding up first request

    - by Matt Dearing
    I am generating proxy classes to a clients java webservice wsdls and xsd files with svcutil. The first call made to each service proxy class takes a very long time. I was hoping to speed this up by generating the XmlSerializers assembly myself (based on the article How to: Improve the Startup Time of WCF Client Applications using the XmlSerializer), but when I do the first call to each service still takes the same amount of time. Here are the steps I am following: //generate strong name key file sn -k Blah.snk //generate the proxy class file svcutil blah.wsdl blah2.wsdl blah3.wsdl ... base.xsd blah.xsd ... /UseSerializerForFaults /ser:XmlSerializer /n:*,SomeNamespace /out:Blah.cs //compile the class into an assembly signing it with the strong name key file csc /target:library /keyfile:Blah.snk /out:Blah.dll Blah.cs //generate the XmlSerializer code this will give us Blah.XmlSerializers.dll.cs svcutil /t:xmlSerializer Blah.dll //compile the xmlserializer code into its own dll using the same key to sign it and referencing the original dll csc /target:library /keyfile:Blah.snk /out:Blah.XmlSerializers.dll Blah.XmlSerializers.dll.cs /r:Blah.dll I then create a standard Console application that references both Blah.dll and Blah.XmlSerializers.dll. I will then try something like: //BlahProxy is one of the generated service proxy classes BlahProxy p = new BlahProxy(); //this call takes 30ish seconds p.SomeMethod(); BlahProxy p2 = new BlahProxy(); //this call takes < 1 second p2.SomeMethod(); //BlahProx2y is one of the generated service proxy classes BlahProxy2 p3 = new BlahProxy2(); //this call takes 30ish seconds p3.SomeMethod(); BlahProxy2 p4 = new BlahProxy2(); //this call takes < 1 second p4.SomeMethod(); I know that the problem is not server side because I don't see the request made in Fiddler until around 29 seconds. Subsequent calls to each service take < 1 second, so thats why I was hoping the main slow down was the .net runtime generating the xmlserializer code itself, compiling it and loading the assembly. I figured this would be the reason the first call to each service is slow and the rest are fast. Unfortunatley, me generating the code myself is not speeding anything up. Does anyone see what I am doing wrong?

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  • Passing data between android ListActivities in Java

    - by Will Janes
    I am new to Android! I am having a problem getting this code to work... Basically I Go from one list activity to another and pass the text from a list item through the intent of the activity to the new list view, then retrieve that text in the new list activity and then preform a http request based on value of that list item. Log Cat 04-05 17:47:32.370: E/AndroidRuntime(30135): FATAL EXCEPTION: main 04-05 17:47:32.370: E/AndroidRuntime(30135): java.lang.ClassCastException:android.widget.LinearLayout 04-05 17:47:32.370: E/AndroidRuntime(30135): at com.thickcrustdesigns.ufood.CatogPage$1.onItemClick(CatogPage.java:66) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.widget.AdapterView.performItemClick(AdapterView.java:284) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.widget.ListView.performItemClick(ListView.java:3731) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.widget.AbsListView$PerformClick.run(AbsListView.java:1959) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.os.Handler.handleCallback(Handler.java:587) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.os.Handler.dispatchMessage(Handler.java:92) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.os.Looper.loop(Looper.java:130) 04-05 17:47:32.370: E/AndroidRuntime(30135): at android.app.ActivityThread.main(ActivityThread.java:3691) 04-05 17:47:32.370: E/AndroidRuntime(30135): at java.lang.reflect.Method.invokeNative(Native Method) 04-05 17:47:32.370: E/AndroidRuntime(30135): at java.lang.reflect.Method.invoke(Method.java:507) 04-05 17:47:32.370: E/AndroidRuntime(30135): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907) 04-05 17:47:32.370: E/AndroidRuntime(30135): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 04-05 17:47:32.370: E/AndroidRuntime(30135): at dalvik.system.NativeStart.main(Native Method) ListActivity 1 package com.thickcrustdesigns.ufood; import java.util.ArrayList; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.Button; import android.widget.ListView; import android.widget.TextView; public class CatogPage extends ListActivity { ListView listView1; Button btn_bk; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.definition_main); btn_bk = (Button) findViewById(R.id.btn_bk); listView1 = (ListView) findViewById(android.R.id.list); ArrayList<NameValuePair> nvp = new ArrayList<NameValuePair>(); nvp.add(new BasicNameValuePair("request", "categories")); ArrayList<JSONObject> jsondefs = Request.fetchData(this, nvp); String[] defs = new String[jsondefs.size()]; for (int i = 0; i < jsondefs.size(); i++) { try { defs[i] = jsondefs.get(i).getString("Name"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } uFoodAdapter adapter = new uFoodAdapter(this, R.layout.definition_list, defs); listView1.setAdapter(adapter); ListView lv = getListView(); lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { TextView tv = (TextView) view; String p = tv.getText().toString(); Intent i = new Intent(getApplicationContext(), Results.class); i.putExtra("category", p); startActivity(i); } }); btn_bk.setOnClickListener(new View.OnClickListener() { public void onClick(View arg0) { Intent i = new Intent(getApplicationContext(), UFoodAppActivity.class); startActivity(i); } }); } } **ListActivity 2** package com.thickcrustdesigns.ufood; import java.util.ArrayList; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.os.Bundle; import android.widget.ListView; public class Results extends ListActivity { ListView listView1; enum Category { Chicken, Beef, Chinese, Cocktails, Curry, Deserts, Fish, ForOne { public String toString() { return "For One"; } }, Lamb, LightBites { public String toString() { return "Light Bites"; } }, Pasta, Pork, Vegetarian } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.definition_main); listView1 = (ListView) findViewById(android.R.id.list); Bundle data = getIntent().getExtras(); String category = data.getString("category"); Category cat = Category.valueOf(category); String value = null; switch (cat) { case Chicken: value = "Chicken"; break; case Beef: value = "Beef"; break; case Chinese: value = "Chinese"; break; case Cocktails: value = "Cocktails"; break; case Curry: value = "Curry"; break; case Deserts: value = "Deserts"; break; case Fish: value = "Fish"; break; case ForOne: value = "ForOne"; break; case Lamb: value = "Lamb"; break; case LightBites: value = "LightBites"; break; case Pasta: value = "Pasta"; break; case Pork: value = "Pork"; break; case Vegetarian: value = "Vegetarian"; } ArrayList<NameValuePair> nvp = new ArrayList<NameValuePair>(); nvp.add(new BasicNameValuePair("request", "category")); nvp.add(new BasicNameValuePair("cat", value)); ArrayList<JSONObject> jsondefs = Request.fetchData(this, nvp); String[] defs = new String[jsondefs.size()]; for (int i = 0; i < jsondefs.size(); i++) { try { defs[i] = jsondefs.get(i).getString("Name"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } uFoodAdapter adapter = new uFoodAdapter(this, R.layout.definition_list, defs); listView1.setAdapter(adapter); } } Request package com.thickcrustdesigns.ufood; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.util.ArrayList; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONArray; import org.json.JSONObject; import android.content.Context; import android.util.Log; import android.widget.Toast; public class Request { @SuppressWarnings("null") public static ArrayList<JSONObject> fetchData(Context context, ArrayList<NameValuePair> nvp) { ArrayList<JSONObject> listItems = new ArrayList<JSONObject>(); InputStream is = null; try { HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost( "http://co350-11d.projects02.glos.ac.uk/php/database.php"); httppost.setEntity(new UrlEncodedFormEntity(nvp)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); is = entity.getContent(); } catch (Exception e) { Log.e("log_tag", "Error in http connection" + e.toString()); } // convert response to string String result = ""; try { BufferedReader reader = new BufferedReader(new InputStreamReader( is, "iso-8859-1"), 8); InputStream stream = null; StringBuilder sb = null; while ((result = reader.readLine()) != null) { sb.append(result + "\n"); } stream.close(); result = sb.toString(); } catch (Exception e) { Log.e("log_tag", "Error converting result " + e.toString()); } try { JSONArray jArray = new JSONArray(result); for (int i = 0; i < jArray.length(); i++) { JSONObject jo = jArray.getJSONObject(i); listItems.add(jo); } } catch (Exception e) { Toast.makeText(context.getApplicationContext(), "None Found!", Toast.LENGTH_LONG).show(); } return listItems; } } Any help would be grateful! Many Thanks EDIT Sorry very tired so missed out my 2nd ListActivity package com.thickcrustdesigns.ufood; import java.util.ArrayList; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.os.Bundle; import android.widget.ListView; public class Results extends ListActivity { ListView listView1; enum Category { Chicken, Beef, Chinese, Cocktails, Curry, Deserts, Fish, ForOne { public String toString() { return "For One"; } }, Lamb, LightBites { public String toString() { return "Light Bites"; } }, Pasta, Pork, Vegetarian } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.setContentView(R.layout.definition_main); listView1 = (ListView) findViewById(android.R.id.list); Bundle data = getIntent().getExtras(); String category = data.getString("category"); Category cat = Category.valueOf(category); String value = null; switch (cat) { case Chicken: value = "Chicken"; break; case Beef: value = "Beef"; break; case Chinese: value = "Chinese"; break; case Cocktails: value = "Cocktails"; break; case Curry: value = "Curry"; break; case Deserts: value = "Deserts"; break; case Fish: value = "Fish"; break; case ForOne: value = "ForOne"; break; case Lamb: value = "Lamb"; break; case LightBites: value = "LightBites"; break; case Pasta: value = "Pasta"; break; case Pork: value = "Pork"; break; case Vegetarian: value = "Vegetarian"; } ArrayList<NameValuePair> nvp = new ArrayList<NameValuePair>(); nvp.add(new BasicNameValuePair("request", "category")); nvp.add(new BasicNameValuePair("cat", value)); ArrayList<JSONObject> jsondefs = Request.fetchData(this, nvp); String[] defs = new String[jsondefs.size()]; for (int i = 0; i < jsondefs.size(); i++) { try { defs[i] = jsondefs.get(i).getString("Name"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } uFoodAdapter adapter = new uFoodAdapter(this, R.layout.definition_list, defs); listView1.setAdapter(adapter); } } Sorry again! Cheers guys!

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  • What is the best workaround for the WCF client `using` block issue?

    - by Eric King
    I like instantiating my WCF service clients within a using block as it's pretty much the standard way to use resources that implement IDisposable: using (var client = new SomeWCFServiceClient()) { //Do something with the client } But, as noted in this MSDN article, wrapping a WCF client in a using block could mask any errors that result in the client being left in a faulted state (like a timeout or communication problem). Long story short, when Dispose() is called, the client's Close() method fires, but throws and error because it's in a faulted state. The original exception is then masked by the second exception. Not good. The suggested workaround in the MSDN article is to completely avoid using a using block, and to instead instantiate your clients and use them something like this: try { ... client.Close(); } catch (CommunicationException e) { ... client.Abort(); } catch (TimeoutException e) { ... client.Abort(); } catch (Exception e) { ... client.Abort(); throw; } Compared to the using block, I think that's ugly. And a lot of code to write each time you need a client. Luckily, I found a few other workarounds, such as this one on IServiceOriented. You start with: public delegate void UseServiceDelegate<T>(T proxy); public static class Service<T> { public static ChannelFactory<T> _channelFactory = new ChannelFactory<T>(""); public static void Use(UseServiceDelegate<T> codeBlock) { IClientChannel proxy = (IClientChannel)_channelFactory.CreateChannel(); bool success = false; try { codeBlock((T)proxy); proxy.Close(); success = true; } finally { if (!success) { proxy.Abort(); } } } } Which then allows: Service<IOrderService>.Use(orderService => { orderService.PlaceOrder(request); } That's not bad, but I don't think it's as expressive and easily understandable as the using block. The workaround I'm currently trying to use I first read about on blog.davidbarret.net. Basically you override the client's Dispose() method wherever you use it. Something like: public partial class SomeWCFServiceClient : IDisposable { void IDisposable.Dispose() { if (this.State == CommunicationState.Faulted) { this.Abort(); } else { this.Close(); } } } This appears to be able to allow the using block again without the danger of masking a faulted state exception. So, are there any other gotchas I have to look out for using these workarounds? Has anybody come up with anything better?

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  • I just can't kill Java thread.

    - by Adrian
    I have a thread that downloads some images from internet using different proxies. Sometimes it hangs, and can't be killed by any means. public HttpURLConnection uc; public InputStream in; Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("server", 8080)); URL url = new URL("http://images.com/image.jpg"); uc = (HttpURLConnection)url.openConnection(proxy); uc.setConnectTimeout(30000); uc.setAllowUserInteraction(false); uc.setDoOutput(true); uc.addRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)"); uc.connect(); in = uc.getInputStream(); When it hangs, it freezes at the uc.getInputStream() method. I made a timer which tries to kill the thread if it's run time exceeds 3 minutes. I tried .terminate() the thread. No effect. I tried uc.disconnect() from the main thread. The method also hangs and with it, the main thread. I tried in.close(). No effect. I tried uc=null, in=null hoping for an exception that will end the thread. It keeps running. It never passes the uc.getInputStream() method. In my last test the thread lasted over 14 hours after receiving all above commands (or various combinations). I had to kill the Java process to stop the thread. If I just ignore the thread, and set it's instance to null, the thread doesn't die and is not cleaned by garbage collector. I know that because if I let the application running for several days, the Java process takes more and more system memory. In 3 days it took 10% of my 8Gb. RAM system. It is impossible to kill a thread whatever?

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