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• Sortable_element with RJS does not working

  - by jaycode

  I have a list of images where user can arrange their orders. When user uploaded an image, I want the list to still be sortable. I am using a similar upload that was described here: http://kpumuk.info/ruby-on-rails/in-place-file-upload-with-ruby-on-rails/ Please help. Here are the code for upload in view file: <% form_for [:admin, @new_image], :html => { :target => 'upload_frame', :multipart => true } do |f| %> <%= hidden_field_tag :update, 'product_images'%> <%= f.hidden_field :image_owner_id %> <%= f.hidden_field :image_owner_type %> <%= f.file_field :image_file %><br /> or get image from this URL: <%= f.text_field :image_file_url %> <%= f.hidden_field :image_file_temp %><br /> <%= f.submit "Upload Image" %> <% end %> And in controller view: def create @image = Image.new(params[:image]) logger.debug "params are #{params.inspect}" if @image.save logger.debug "initiating javascript now" responds_to_parent do render :update do |page| logger.debug "javascript test #{sortable_element("product_images", :url => sort_admin_images_path, :handle => "handle", :constraint => false)}" page << "show_notification('Image Uploaded');" page.replace_html params[:update], :partial => '/admin/shared/editor/images', :locals => {:object => @image.image_owner, :updated_image => @image} page << sortable_element("product_images", :url => sort_admin_images_path, :handle => "handle", :constraint => false) end end #render :partial => '/admin/shared/editor/images', :locals => {:object => @image.image_owner, :updated_image => @image} else responds_to_parent do render :update do |page| page << "show_notification('Image Upload Error');" end end end end Or, to rephrase the question: Running this: page.replace_html params[:update], :partial => '/admin/shared/editor/images', :locals => {:object => @image.image_owner, :updated_image => @image} page << sortable_element("product_images", :url => sort_admin_images_path, :handle => "handle", :constraint => false) Will NOT adding sortable list feature. Please help, Thank you

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• Panning weirdness on an UserControl

  - by Matías

  Hello, I'm trying to build my own "PictureBox like" control adding some functionalities. For example, I want to be able to pan over a big image by simply clicking and dragging with the mouse. The problem seems to be on my OnMouseMove method. If I use the following code I get the drag speed and precision I want, but of course, when I release the mouse button and try to drag again the image is restored to its original position. using System.Drawing; using System.Windows.Forms; namespace Testing { public partial class ScrollablePictureBox : UserControl { private Image image; private bool centerImage; public Image Image { get { return image; } set { image = value; Invalidate(); } } public bool CenterImage { get { return centerImage; } set { centerImage = value; Invalidate(); } } public ScrollablePictureBox() { InitializeComponent(); SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true); Image = null; AutoScroll = true; AutoScrollMinSize = new Size(0, 0); } private Point clickPosition; private Point scrollPosition; protected override void OnMouseDown(MouseEventArgs e) { base.OnMouseDown(e); clickPosition.X = e.X; clickPosition.Y = e.Y; } protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X = clickPosition.X - e.X; scrollPosition.Y = clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); e.Graphics.FillRectangle(new Pen(BackColor).Brush, 0, 0, e.ClipRectangle.Width, e.ClipRectangle.Height); if (Image == null) return; int centeredX = AutoScrollPosition.X; int centeredY = AutoScrollPosition.Y; if (CenterImage) { //Something not relevant } AutoScrollMinSize = new Size(Image.Width, Image.Height); e.Graphics.DrawImage(Image, new RectangleF(centeredX, centeredY, Image.Width, Image.Height)); } } } But if I modify my OnMouseMove method to look like this: protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X += clickPosition.X - e.X; scrollPosition.Y += clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } ... you will see that the dragging is not smooth as before, and sometimes behaves weird (like with lag or something). What am I doing wrong? I've also tried removing all "base" calls on a desperate movement to solve this issue, haha, but again, it didn't work. Thanks for your time.

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• Are there any risk if your DNS's SOA or admin contact are using the same domain as the DNS

  - by Yoga

  For example, Google.com [1] The SOA email is : dns-admin.google.com The contact is: Administrative Contact: DNS Admin Google Inc. dns-admin.google.com As you can see, both are using google.com, I am thinking it is safe to use the same domain, i.e. consider the case you lost control of the domain, you can receive email also. (Of course Google is a public company so the chance is low, but might occur for smaller company that their domain might be stolen..) So, do you recommend use your the same domain as the contact or others free services such as gmail? [1] http://whois.domaintools.com/google.com

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• How do I programatically determine which port a SQL Server is running on?

  - by Ralph Willgoss

  How do I programatically determine which port a SQL Server is running on?/*Wrapper script for xp_readerrorlogAuthor: Ralph WillgossDate: 2nd Oct 2012This script cycles through all logs files, looking for the listening port.Normally you have to specify the log file one by one, the script removes the need for that.Param ref for: xp_readerrorlog1. Value of error log file you want to read: 0 = current, 1 = Archive #1, 2 = Archive #2, etc...2. Log file type: 1 or NULL = error log, 2 = SQL Agent log3. Search string 1: String one you want to search for4. Search string 2: String two you want to search for to further refine the results5. Search from start time6. Search to end time7. Sort order for results: N'asc' = ascending, N'desc' = descending*/USE MasterGO--  Get log countDECLARE @logcount intDROP TABLE #ResultCREATE TABLE #Result (ArchiveNo int, Date datetime, Size int)INSERT INTO #ResultEXEC xp_enumerrorlogsSET @logcount = (SELECT COUNT(*) FROM #Result)-- Search the available logsDECLARE @counter intSET @counter = 0WHILE @counter <= @logcountBEGIN   EXEC xp_readerrorlog @counter, 1, N'Server is listening on', 'any', NULL, NULL, N'asc'   SET @counter = @counter + 1ENDGO

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• Within a category, "Seach all posts" checkbox, how to?

  - by benoror

  Hi, I have set up my routes so I can search all posts with: /posts/search/foobar or search inside a category /posts/category/1/search/foobar It works pretty well, when someone is browsing an specific category it does search just posts that belongs to that category. When inside a category, I want to place a checkbox to "Search all the posts" My search form: <% form_for :posts, :url => {:controller => :posts, :action => :index} do |f| %> Search: <%= f.text_field :search %> <% if params[:cat] %> <%= f.check_box :ignore_cat, '1', false %> Search all the posts? <% end %> <%= f.submit 'Go' %> <% end %> How can I force to change the route?

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• How do I programatically determine which port a SQL Server is running on?

  - by Ralph Willgoss

  How do I programatically determine which port a SQL Server is running on?/*===== Param ref for xp_readerrorlog ===1. Value of error log file you want to read: 0 = current, 1 = Archive #1, 2 = Archive #2, etc...2. Log file type: 1 or NULL = error log, 2 = SQL Agent log3. Search string 1: String one you want to search for4. Search string 2: String two you want to search for to further refine the results5. Search from start time6. Search to end time7. Sort order for results: N'asc' = ascending, N'desc' = descendingHow many error logs do I have?SMSStudio -> Management -> SQL Server Logs -> (right click) -> configure = see values*/USE MasterGO--  get log countDECLARE @logcount intDROP TABLE #ResultCREATE TABLE #Result (ArchiveNo int, Date datetime, Size int)INSERT INTO #ResultEXEC xp_enumerrorlogsSET @logcount = (SELECT COUNT(*) FROM #Result)-- search logsDECLARE @counter intSET @counter = 0WHILE @counter <= @logcountBEGIN    EXEC xp_readerrorlog @counter, 1, N'Server is listening on', 'any', NULL, NULL, N'asc'    SET @counter = @counter + 1ENDGO

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• Need help with joins in sqlalchemy

  - by Steve

  I'm new to Python, as well as SQL Alchemy, but not the underlying development and database concepts. I know what I want to do and how I'd do it manually, but I'm trying to learn how an ORM works. I have two tables, Images and Keywords. The Images table contains an id column that is its primary key, as well as some other metadata. The Keywords table contains only an id column (foreign key to Images) and a keyword column. I'm trying to properly declare this relationship using the declarative syntax, which I think I've done correctly. Base = declarative_base() class Keyword(Base): __tablename__ = 'Keywords' __table_args__ = {'mysql_engine' : 'InnoDB'} id = Column(Integer, ForeignKey('Images.id', ondelete='CASCADE'), primary_key=True) keyword = Column(String(32), primary_key=True) class Image(Base): __tablename__ = 'Images' __table_args__ = {'mysql_engine' : 'InnoDB'} id = Column(Integer, primary_key=True, autoincrement=True) name = Column(String(256), nullable=False) keywords = relationship(Keyword, backref='image') This represents a many-to-many relationship. One image can have many keywords, and one keyword can relate back to many images. I want to do a keyword search of my images. I've tried the following with no luck. Conceptually this would've been nice, but I understand why it doesn't work. image = session.query(Image).filter(Image.keywords.contains('boy')) I keep getting errors about no foreign key relationship, which seems clearly defined to me. I saw something about making sure I get the right 'join', and I'm using 'from sqlalchemy.orm import join', but still no luck. image = session.query(Image).select_from(join(Image, Keyword)).\ filter(Keyword.keyword == 'boy') I added the specific join clause to the query to help it along, though as I understand it, I shouldn't have to do this. image = session.query(Image).select_from(join(Image, Keyword, Image.id==Keyword.id)).filter(Keyword.keyword == 'boy') So finally I switched tactics and tried querying the keywords and then using the backreference. However, when I try to use the '.images' iterating over the result, I get an error that the 'image' property doesn't exist, even though I did declare it as a backref. result = session.query(Keyword).filter(Keyword.keyword == 'boy').all() I want to be able to query a unique set of image matches on a set of keywords. I just can't guess my way to the syntax, and I've spent days reading the SQL Alchemy documentation trying to piece this out myself. I would very much appreciate anyone who can point out what I'm missing.

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• Entries in the resolv.conf

  - by Carsten

  I am using 12.04 and have a problem with my resolv.conf There are 2 search lines there. But I can only explain one. I would like to get the other one removed. carsten@myubuntubox:~$ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.0.1 search aaaa.bbb.example.net search something nameserver 1.2.3.4 nameserver 1.2.3.5 I can't explain the search aaaa.bbb.example.net Where does it come from? The last 3 lines (like I want come from /etc/resolvconf/resolv.conf.d/tail This is good. But where is the other search line coming from? In /etc/dhcp/dhclient I removed the requests for domain-name-servers, domain-search, but the lines are still in there. Should I remove the dhcp6.domain-search as well?

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• drag to pan on an UserControl

  - by Matías

  Hello, I'm trying to build my own "PictureBox like" control adding some functionalities. For example, I want to be able to pan over a big image by simply clicking and dragging with the mouse. The problem seems to be on my OnMouseMove method. If I use the following code I get the drag speed and precision I want, but of course, when I release the mouse button and try to drag again the image is restored to its original position. using System.Drawing; using System.Windows.Forms; namespace Testing { public partial class ScrollablePictureBox : UserControl { private Image image; private bool centerImage; public Image Image { get { return image; } set { image = value; Invalidate(); } } public bool CenterImage { get { return centerImage; } set { centerImage = value; Invalidate(); } } public ScrollablePictureBox() { InitializeComponent(); SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true); Image = null; AutoScroll = true; AutoScrollMinSize = new Size(0, 0); } private Point clickPosition; private Point scrollPosition; protected override void OnMouseDown(MouseEventArgs e) { base.OnMouseDown(e); clickPosition.X = e.X; clickPosition.Y = e.Y; } protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X = clickPosition.X - e.X; scrollPosition.Y = clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); e.Graphics.FillRectangle(new Pen(BackColor).Brush, 0, 0, e.ClipRectangle.Width, e.ClipRectangle.Height); if (Image == null) return; int centeredX = AutoScrollPosition.X; int centeredY = AutoScrollPosition.Y; if (CenterImage) { //Something not relevant } AutoScrollMinSize = new Size(Image.Width, Image.Height); e.Graphics.DrawImage(Image, new RectangleF(centeredX, centeredY, Image.Width, Image.Height)); } } } But if I modify my OnMouseMove method to look like this: protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X += clickPosition.X - e.X; scrollPosition.Y += clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } ... you will see that the dragging is not smooth as before, and sometimes behaves weird (like with lag or something). What am I doing wrong? I've also tried removing all "base" calls on a desperate movement to solve this issue, haha, but again, it didn't work. Thanks for your time.

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• Xobni Plus for Outlook [Review]

  - by The Geek

  Overview Xobni Plus is an addin that will bring a sidebar to Outlook which allows you to search through your inbox and contacts a lot easier. It provides the ability to search and keep track of your favorite social networks. Searching with Xobni is a lot more powerful than the default search feature in Outlook. It let’s you drill down your searches to conversations, email, links, and attachments. It now supports Outlook 2010 both 32 & 64-bit versions. Installation & Setup Installation is easy following the wizard. After completing the wizard you can tell you’re friends on Facebook and Twitter that you are now using it. You can also decide to join their Product Improvement Program if you want. After installation when you open Outlook, Xobni appears as a sidebar on the right side. Don’t worry about it always being in the way, as you can hide it if you need more room for other Outlook functions. After Xobni free is installed, you can upgrade to the Plus version at any time. A new window will open up and you can use your Credit Card, PayPal, or redeem a code if you have one. Features & Use Where to begin with the amount of features available in Xobni Plus? It really has an amazing amount of cool features. Of course you’ll have all of the features of the Free Version which we previously covered…and a lot more. After Xobni is installed you’ll notice a section for it on the Ribbon. From here you can search Xobni, show or hide the Sidebar, and change other options. It allows you to easily keep up with various social networks like Facebook, Twitter, and LinkedIn… Check out email analytics and contact ranks. Click on the Files Exchanged tab to search for specific attachments. Quickly search links exchanged with your contacts. Hover over a link to get a preview of what it entails. It gives you the ability to index all of your Yahoo mail as well, without the need for purchasing Yahoo Plus! Then your Yahoo messages appear in the Xobni sidebar. When you select a contact you can see related messages from you Yahoo account. Easily index all of your mail…including Yahoo mail for better organization and faster search results. There are several options you can select to change the way Xobni works. From setting up your Yahoo email, Indexing options, and much more. Additional Features of Xobni Plus Advanced Search Capabilities – Filter results, Boolean & Phrase Search, Ability to search Appointments & Tasks, Advanced Search Builder Search unlimited PST data files Xobni contacts in the compose screen Find links exchanged with your contacts View calendar appointments One year premium tech support No Ads! Performance We ran Xobni Plus on Outlook 2010 32-bit on a Dual-Core AMD Athlon system with 4GB of RAM and found it to run quite smoothly. However, we did notice it would sometimes slow down launching Outlook, especially if other apps are running at the same time. Product Support When you buy a license for Xobni Plus you get a full year of premium tech support. They provide a Questions and Answers page on their site where you can run a search query and answers appear instantly. You can contact support directly as a Plus member through their web form and they advise the turn around time is 2 business days. However, when we tested it, we received a response within 24 hours. They also provide FAQ, Community forum, and you can download the Owners Manual in PDF format from the support page. Conclusion Xobni Plus is a very powerful addin for Outlook and includes a lot more features that we didn’t cover in this review. You can download Xobni free edition which includes an 8 day free trial of the Plus version. This provides a good way to start getting familiar with it. Then upgrade to Xobni Plus at any time for $29.95. Once you get started, you’ll find the sidebar is nicely laid out and intuitive to use. If you live out of Outlook during the day, Xobni Plus is a great addition for fast and powerful searches. It provides an easy way to keep all of your contacts and messages well organized and easy to find. Xobni Plus works with XP, Vista, and Windows 7 (32 & 64-bit editions) Outlook 2003, 2007 and both 32 & 64-bit editions of Outlook 2010. Download Xobni Plus Download Xobni Free Edition Rating Installation: 8 Ease of Use: 8 Features: 9 Performance: 8 Product Support: 8 Similar Articles Productive Geek Tips Xobni Free Powers Up Outlook’s Search and ContactsCreate an Email Template in Outlook 2003Add Social Elements to Your Gmail Contacts with RapportiveChange Outlook Startup FolderClear Outlook Searches and MRU (Most Recently Used) Lists TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 10 Superb Firefox Wallpapers OpenDNS Guide Google TV The iPod Revolution Ultimate Boot CD can help when disaster strikes Windows Firewall with Advanced Security – How To Guides

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• Carrierwave upload to a tmp dir before saving to database

  - by user827570

  I'm trying to build a visual editor where users can click an image they are presented with an image upload form once the upload is done I use ajax to return the image and insert it back into the page. But the above method inserts the image straight into the database but I want users to be able to visualize the image before the image is inserted into the database. So I was wondering if the image using carrierwave could be uploaded to a temp location, sent back to the user and then when the user saves the page the image is moved into the permanent location. Here's what I have so far. def edit_image @page = Page.find(1) @page.update_attributes(params[:page]) @page.save return :text => @page.file end But this is what I want to achieve def temp_image #uploads received image to a temp location #returns image to the user end And once the user clicks save def save #moves the file in the temp folder to the permanent location end Cheers

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• ASp.Net Mvc 1.0 Dynamic Images Returned from Controller taking 154 seconds+ to display in IE8, firef

  - by julian guppy

  I have a curious problem with IE, IIS 6.0 dynamic PNG files and I am baffled as to how to fix.. Snippet from Helper (this returns the URL to the view for requesting the images from my Controller. string url = LinkBuilder.BuildUrlFromExpression(helper.ViewContext.RequestContext, helper.RouteCollection, c = c.FixHeight(ir.Filename, ir.AltText, "FFFFFF")); url = url.Replace("&", "&"); sb.Append(string.Format("<removed id=\"TheImage\" src=\"{0}\" alt=\"\" /", url)+Environment.NewLine); This produces a piece of html as follows:- img id="TheImage" src="/ImgText/FixHeight?sFile=Images%2FUser%2FJulianGuppy%2FMediums%2Fconservatory.jpg&backgroundColour=FFFFFF" alt="" / brackets missing because i cant post an image... even though I dont want to post an image I jsut want to post the markup... sigh Snippet from Controller ImgTextController /// <summary> /// This function fixes the height of the image /// </summary> /// <param name="sFile"></param> /// <param name="alternateText"></param> /// <param name="backgroundColour"></param> /// <returns></returns> [AcceptVerbs(HttpVerbs.Get)] public ActionResult FixHeight(string sFile, string alternateText, string backgroundColour) { #region File if (string.IsNullOrEmpty(sFile)) { return new ImgTextResult(); } // MVC specific change to prepend the new directory if (sFile.IndexOf("Content") == -1) { sFile = "~/Content/" + sFile; } // open the file System.Drawing.Image img; try { img = System.Drawing.Image.FromFile(Server.MapPath(sFile)); } catch { img = null; } // did we fail? if (img == null) { return new ImgTextResult(); } #endregion File #region Width // Sort out the width from the image passed to me Int32 nWidth = img.Width; #endregion Width #region Height Int32 nHeight = img.Height; #endregion Height // What is the ideal height given a width of 2100 this should be 1400. var nIdealHeight = (int)(nWidth / 1.40920096852); // So is the actual height of the image already greater than the ideal height? Int32 nSplit; if (nIdealHeight < nHeight) { // Yes, do nothing, well i need to return the iamge... nSplit = 0; } else { // rob wants to not show the white at the top or bottom, so if we were to crop the image how would be do it // 1. Calculate what the width should be If we dont adjust the heigt var newIdealWidth = (int)(nHeight * 1.40920096852); // 2. This newIdealWidth should be smaller than the existing width... so work out the split on that Int32 newSplit = (nWidth - newIdealWidth) / 2; // 3. Now recrop the image using 0-nHeight as the height (i.e. full height) // but crop the sides so that its the correct aspect ration var newRect = new Rectangle(newSplit, 0, newIdealWidth, nHeight); img = CropImage(img, newRect); nHeight = img.Height; nWidth = img.Width; nSplit = 0; } // No, so I want to place this image on a larger canvas and we do this by Creating a new image to be the size that we want System.Drawing.Image canvas = new Bitmap(nWidth, nIdealHeight, PixelFormat.Format24bppRgb); Graphics g = Graphics.FromImage(canvas); #region Color // Whilst we can set the background colour we shall default to white if (string.IsNullOrEmpty(backgroundColour)) { backgroundColour = "FFFFFF"; } Color bc = ColorTranslator.FromHtml("#" + backgroundColour); #endregion Color // Filling the background (which gives us our broder) Brush backgroundBrush = new SolidBrush(bc); g.FillRectangle(backgroundBrush, -1, -1, nWidth + 1, nIdealHeight + 1); // draw the image at the position var rect = new Rectangle(0, nSplit, nWidth, nHeight); g.DrawImage(img, rect); return new ImgTextResult { Image = canvas, ImageFormat = ImageFormat.Png }; } My ImgTextResult is a class that returns an Action result for me but embedding the image from a memory stream into the response.outputstream. snippet from my ImageResults /// <summary> /// Execute the result /// </summary> /// <param name="context"></param> public override void ExecuteResult(ControllerContext context) { // output context.HttpContext.Response.Clear(); context.HttpContext.Response.ContentType = "image/png"; try { var memStream = new MemoryStream(); Image.Save(memStream, ImageFormat.Png); context.HttpContext.Response.BinaryWrite(memStream.ToArray()); context.HttpContext.Response.Flush(); context.HttpContext.Response.Close(); memStream.Dispose(); Image.Dispose(); } catch (Exception ex) { string a = ex.Message; } } Now all of this works locally and lovely, and indeed all of this works on my production server BUT Only for Firefox, Safari, Chrome (and other browsers) IE has a fit and decides that it either wont display the image or it does display the image after approx 154seconds of waiting..... I have made sure my HTML is XHTML compliant, I have made sure I am getting no Routing errors or crashes in my event log on the server.... Now obviously I have been a muppet and have done something wrong... but what I cant fathom is why in development all works fine, and in production all non IE browsers also work fine, but IE 8 using IIS 6.0 production server is having some kind of problem in returning this PNG and I dont have an error to trace... so what I am looking for is guidance as to how I can debug this problem.

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• Rails / JBuilder - Entity array with has_many attributes

  - by seufagner

  I have two models, Person and Image and I want return an json array of Persons with your Images. But I dont want return all Image attributes, but produces a different result. Code below: class Person < ActiveRecord::Base has_many :images, as: :imageable validates :name, presence: true accepts_nested_attributes_for :images, :reject_if => lambda { |img| img['asset'].blank? } end class Image < ActiveRecord::Base belongs_to :imageable, polymorphic: true mount_uploader :asset, ImageUploader validates :asset, presence: true end zzz.jbuilder.json template json.persons(@rodas, :id, :name, :images) json produced: { "rodas": [{ "id": 4, "name": "John", "images": [ { "asset": { "url": "/uploads/image/xxxx.png" } }, { "asset": { "url": "/uploads/image/yyyyy.jpeg" } } ]}, { "id": 19, "name": "Mary", "images": [ { "asset": { "url": "/uploads/image/kkkkkkk.png" } } ] }] } I want something like: { "rodas": [ { "id": 4, "name": "John", "images": [ "/uploads/image/xxxx.png" , "/uploads/image/yyyy.jpeg" ] }, { "id": 10, "name": "Mary", "images": [ "/uploads/image/dddd.png" , "/uploads/image/xxxx.jpeg" ] } ]}

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• Parallel Task Library WaitAny Design

  - by colithium

  I've just begun to explore the PTL and have a design question. My Scenario: I have a list of URLs that each refer to an image. I want each image to be downloaded in parallel. As soon as at least one image is downloaded, I want to execute a method that does something with the downloaded image. That method should NOT be parallelized -- it should be serial. I think the following will work but I'm not sure if this is the right way to do it. Because I have separate classes for collecting the images and for doing "something" with the collected images, I end up passing around an array of Tasks which seems wrong since it exposes the inner workings of how images are retrieved. But I don't know a way around it. In reality there is more to both of these methods but that's not important for this. Just know that they really shouldn't be lumped into one large method that both retrieves and does something with the image. Task<Image>[] downloadTasks = collector.RetrieveImages(listOfURLs); for (int i = 0; i < listOfURLs.Count; i++) { //Wait for any of the remaining downloads to complete int completedIndex = Task<Image>.WaitAny(downloadTasks); Image completedImage = downloadTasks[completedIndex].Result; //Now do something with the image (this "something" must happen serially) } /////////////////////////////////////////////////// public Task<Image>[] RetrieveImages(List<string> urls) { Task<Image>[] tasks = new Task<Image>[urls.Count]; int index = 0; foreach (string url in urls) { string lambdaVar = url; //Required... Bleh tasks[index] = Task<Image>.Factory.StartNew(() => { using (WebClient client = new WebClient()) { //TODO: Replace with live image locations string fileName = String.Format("{0}.png", i); client.DownloadFile(lambdaVar, Path.Combine(Application.StartupPath, fileName)); } return Image.FromFile(Path.Combine(Application.StartupPath, fileName)); }, TaskCreationOptions.LongRunning | TaskCreationOptions.AttachedToParent); index++; } return tasks; }

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• What Am I Doing Wrong on this HTACCESS file!

  - by Ronnie Chester Lynwood

  Someone please tell me what is wrong with this htaccess rules? RewriteCond %{QUERY_STRING} ^q=(.*)&type=downway1$ [NC] RewriteRule ^search\.php$ /search\/%1\/1\/? [R=301,NC,L] RewriteCond %{QUERY_STRING} ^q=(.*)&type=(.*)$ [NC] RewriteRule ^search\.php$ /search\/%1\/%2\/1\/? [R=301,NC,L] RewriteRule search/(.*)/(.*)/$ /search.php?q=$1&page=$2 [L] <-- this and RewriteRule search/(.*)/(.*)/(.*)/$ /search.php?q=$1&type=$2&page=$3 [L] <-- this are not working in same time. for example TYPE = app Q = windows if I search type by downway1 it works powerfully but if I search in app type Q becomes windows/app not only windows. help me please!

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• can someone help me fix my code?

  - by user267490

  Hi, I have this code I been working on but I'm having a hard time for it to work. I did one but it only works in php 5.3 and I realized my host only supports php 5.0! do I was trying to see if I could get it to work on my sever correctly, I'm just lost and tired lol <?php //Temporarily turn on error reporting @ini_set('display_errors', 1); error_reporting(E_ALL); // Set default timezone (New PHP versions complain without this!) date_default_timezone_set("GMT"); // Common set_time_limit(0); require_once('dbc.php'); require_once('sessions.php'); page_protect(); // Image settings define('IMG_FIELD_NAME', 'cons_image'); // Max upload size in bytes (for form) define ('MAX_SIZE_IN_BYTES', '512000'); // Width and height for the thumbnail define ('THUMB_WIDTH', '150'); define ('THUMB_HEIGHT', '150'); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <title>whatever</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <style type="text\css"> .validationerrorText { color:red; font-size:85%; font-weight:bold; } </style> </head> <body> <h1>Change image</h1> <?php $errors = array(); // Process form if (isset($_POST['submit'])) { // Get filename $filename = stripslashes($_FILES['cons_image']['name']); // Validation of image file upload $allowedFileTypes = array('image/gif', 'image/jpg', 'image/jpeg', 'image/png'); if ($_FILES[IMG_FIELD_NAME]['error'] == UPLOAD_ERR_NO_FILE) { $errors['img_empty'] = true; } elseif (($_FILES[IMG_FIELD_NAME]['type'] != '') && (!in_array($_FILES[IMG_FIELD_NAME]['type'], $allowedFileTypes))) { $errors['img_type'] = true; } elseif (($_FILES[IMG_FIELD_NAME]['error'] == UPLOAD_ERR_INI_SIZE) || ($_FILES[IMG_FIELD_NAME]['error'] == UPLOAD_ERR_FORM_SIZE) || ($_FILES[IMG_FIELD_NAME]['size'] > MAX_SIZE_IN_BYTES)) { $errors['img_size'] = true; } elseif ($_FILES[IMG_FIELD_NAME]['error'] != UPLOAD_ERR_OK) { $errors['img_error'] = true; } elseif (strlen($_FILES[IMG_FIELD_NAME]['name']) > 200) { $errors['img_nametoolong'] = true; } elseif ( (file_exists("\\uploads\\{$username}\\images\\banner\\{$filename}")) || (file_exists("\\uploads\\{$username}\\images\\banner\\thumbs\\{$filename}")) ) { $errors['img_fileexists'] = true; } if (! empty($errors)) { unlink($_FILES[IMG_FIELD_NAME]['tmp_name']); //cleanup: delete temp file } // Create thumbnail if (empty($errors)) { // Make directory if it doesn't exist if (!is_dir("\\uploads\\{$username}\\images\\banner\\thumbs\\")) { // Take directory and break it down into folders $dir = "uploads\\{$username}\\images\\banner\\thumbs"; $folders = explode("\\", $dir); // Create directory, adding folders as necessary as we go (ignore mkdir() errors, we'll check existance of full dir in a sec) $dirTmp = ''; foreach ($folders as $fldr) { if ($dirTmp != '') { $dirTmp .= "\\"; } $dirTmp .= $fldr; mkdir("\\".$dirTmp); //ignoring errors deliberately! } // Check again whether it exists if (!is_dir("\\uploads\\$username\\images\\banner\\thumbs\\")) { $errors['move_source'] = true; unlink($_FILES[IMG_FIELD_NAME]['tmp_name']); //cleanup: delete temp file } } if (empty($errors)) { // Move uploaded file to final destination if (! move_uploaded_file($_FILES[IMG_FIELD_NAME]['tmp_name'], "/uploads/$username/images/banner/$filename")) { $errors['move_source'] = true; unlink($_FILES[IMG_FIELD_NAME]['tmp_name']); //cleanup: delete temp file } else { // Create thumbnail in new dir if (! make_thumb("/uploads/$username/images/banner/$filename", "/uploads/$username/images/banner/thumbs/$filename")) { $errors['thumb'] = true; unlink("/uploads/$username/images/banner/$filename"); //cleanup: delete source file } } } } // Record in database if (empty($errors)) { // Find existing record and delete existing images $sql = "SELECT `bannerORIGINAL`, `bannerTHUMB` FROM `agent_settings` WHERE (`agent_id`={$user_id}) LIMIT 1"; $result = mysql_query($sql); if (!$result) { unlink("/uploads/$username/images/banner/$filename"); //cleanup: delete source file unlink("/uploads/$username/images/banner/thumbs/$filename"); //cleanup: delete thumbnail file die("<div><b>Error: Problem occurred with Database Query!</b><br /><br /><b>File:</b> " . __FILE__ . "<br /><b>Line:</b> " . __LINE__ . "<br /><b>MySQL Error Num:</b> " . mysql_errno() . "<br /><b>MySQL Error:</b> " . mysql_error() . "</div>"); } $numResults = mysql_num_rows($result); if ($numResults == 1) { $row = mysql_fetch_assoc($result); // Delete old files unlink("/uploads/$username/images/banner/" . $row['bannerORIGINAL']); //delete OLD source file unlink("/uploads/$username/images/banner/thumbs/" . $row['bannerTHUMB']); //delete OLD thumbnail file } // Update/create record with new images if ($numResults == 1) { $sql = "INSERT INTO `agent_settings` (`agent_id`, `bannerORIGINAL`, `bannerTHUMB`) VALUES ({$user_id}, '/uploads/$username/images/banner/$filename', '/uploads/$username/images/banner/thumbs/$filename')"; } else { $sql = "UPDATE `agent_settings` SET `bannerORIGINAL`='/uploads/$username/images/banner/$filename', `bannerTHUMB`='/uploads/$username/images/banner/thumbs/$filename' WHERE (`agent_id`={$user_id})"; } $result = mysql_query($sql); if (!$result) { unlink("/uploads/$username/images/banner/$filename"); //cleanup: delete source file unlink("/uploads/$username/images/banner/thumbs/$filename"); //cleanup: delete thumbnail file die("<div><b>Error: Problem occurred with Database Query!</b><br /><br /><b>File:</b> " . __FILE__ . "<br /><b>Line:</b> " . __LINE__ . "<br /><b>MySQL Error Num:</b> " . mysql_errno() . "<br /><b>MySQL Error:</b> " . mysql_error() . "</div>"); } } // Print success message and how the thumbnail image created if (empty($errors)) { echo "<p>Thumbnail created Successfully!</p>\n"; echo "<img src=\"/uploads/$username/images/banner/thumbs/$filename\" alt=\"New image thumbnail\" />\n"; echo "<br />\n"; } } if (isset($errors['move_source'])) { echo "\t\t<div>Error: Failure occurred moving uploaded source image!</div>\n"; } if (isset($errors['thumb'])) { echo "\t\t<div>Error: Failure occurred creating thumbnail!</div>\n"; } ?> <form action="" enctype="multipart/form-data" method="post"> <input type="hidden" name="MAX_FILE_SIZE" value="<?php echo MAX_SIZE_IN_BYTES; ?>" /> <label for="<?php echo IMG_FIELD_NAME; ?>">Image:</label> <input type="file" name="<?php echo IMG_FIELD_NAME; ?>" id="<?php echo IMG_FIELD_NAME; ?>" /> <?php if (isset($errors['img_empty'])) { echo "\t\t<div class=\"validationerrorText\">Required!</div>\n"; } if (isset($errors['img_type'])) { echo "\t\t<div class=\"validationerrorText\">File type not allowed! GIF/JPEG/PNG only!</div>\n"; } if (isset($errors['img_size'])) { echo "\t\t<div class=\"validationerrorText\">File size too large! Maximum size should be " . MAX_SIZE_IN_BYTES . "bytes!</div>\n"; } if (isset($errors['img_error'])) { echo "\t\t<div class=\"validationerrorText\">File upload error occured! Error code: {$_FILES[IMG_FIELD_NAME]['error']}</div>\n"; } if (isset($errors['img_nametoolong'])) { echo "\t\t<div class=\"validationerrorText\">Filename too long! 200 Chars max!</div>\n"; } if (isset($errors['img_fileexists'])) { echo "\t\t<div class=\"validationerrorText\">An image file already exists with that name!</div>\n"; } ?> <br /><input type="submit" name="submit" id="image1" value="Upload image" /> </form> </body> </html> <?php ################################# # # F U N C T I O N S # ################################# /* * Function: make_thumb * * Creates the thumbnail image from the uploaded image * the resize will be done considering the width and * height defined, but without deforming the image * * @param $sourceFile Path anf filename of source image * @param $destFile Path and filename to save thumbnail as * @param $new_w the new width to use * @param $new_h the new height to use */ function make_thumb($sourceFile, $destFile, $new_w=false, $new_h=false) { if ($new_w === false) { $new_w = THUMB_WIDTH; } if ($new_h === false) { $new_h = THUMB_HEIGHT; } // Get image extension $ext = strtolower(getExtension($sourceFile)); // Copy source switch($ext) { case 'jpg': case 'jpeg': $src_img = imagecreatefromjpeg($sourceFile); break; case 'png': $src_img = imagecreatefrompng($sourceFile); break; case 'gif': $src_img = imagecreatefromgif($sourceFile); break; default: return false; } if (!$src_img) { return false; } // Get dimmensions of the source image $old_x = imageSX($src_img); $old_y = imageSY($src_img); // Calculate the new dimmensions for the thumbnail image // 1. calculate the ratio by dividing the old dimmensions with the new ones // 2. if the ratio for the width is higher, the width will remain the one define in WIDTH variable // and the height will be calculated so the image ratio will not change // 3. otherwise we will use the height ratio for the image // as a result, only one of the dimmensions will be from the fixed ones $ratio1 = $old_x / $new_w; $ratio2 = $old_y / $new_h; if ($ratio1 > $ratio2) { $thumb_w = $new_w; $thumb_h = $old_y / $ratio1; } else { $thumb_h = $new_h; $thumb_w = $old_x / $ratio2; } // Create a new image with the new dimmensions $dst_img = ImageCreateTrueColor($thumb_w, $thumb_h); // Resize the big image to the new created one imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y); // Output the created image to the file. Now we will have the thumbnail into the file named by $filename switch($ext) { case 'jpg': case 'jpeg': $result = imagepng($dst_img, $destFile); break; case 'png': $result = imagegif($dst_img, $destFile); break; case 'gif': $result = imagejpeg($dst_img, $destFile); break; default: //should never occur! } if (!$result) { return false; } // Destroy source and destination images imagedestroy($dst_img); imagedestroy($src_img); return true; } /* * Function: getExtension * * Returns the file extension from a given filename/path * * @param $str the filename to get the extension from */ function getExtension($str) { return pathinfo($str, PATHINFO_EXTENSION); } ?>

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• Input checkbox name converts period signs into underlines on post

  - by Rakoon

  Hello I am working on an image gallery at the moment. When a user is logged in, an x appears over each image and a checkbox next to it to enable the user to delete that image. Only if the checkbox is checked will the image be deleted. They are both in a (one for each image in the gallery), the small image "x.gif" is an input type="image" that submits the $_POST form. The checkbox inherits the name of the image and is to prevent accidentally pressing the x button and deleting an image. The problem is that the checkbox name, upon posting it gets converted from (for instance) "Image.jpg" to "Image_jpg" When i test it with print_r($_POST); Should I create code for replacing _jpg or _gif into .jpg and .gif after the post or is there a way to make it possible to use period signs in input names? Any help is greatly appreciated.

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• Website displays in chrome perfectly, but not in mozilla or IE

  - by Atharul Khan

  here are the code snippets for the html and css. It works finds in Google chrome, but when I try to display it in mozilla or IE, it shows something completely different. I cannot attach images as I do not have the required reputation. I really appreciate the help. Thank you! HTML <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <link rel="stylesheet" type="text/css" href="style.css"> <link rel="shortcut icon" href="ak.png"> <title>Home</title> </head> <body> <div class="Nav"> <nav> <ul class="navigation fade-in2"> <li><a href="#home">Home</a></li> <li><a href="#about">About</a></li> <li><a href="#portfolio">Portfolio</a></li> <li><a href="#shop">Shop</a></li> <li><a href="#blog">Blog</a></li> <li><a href="#contact">Contact</a></li> </ul> </nav> </div> <div class="logo"><a href="#home"><img class="ak fade-in2" src="ak.png"></a></div> <div class="background"><img class="beauty" src="beauty.jpg"></div> <div class="header"> <h1 class="headerName fade-in">DESIGN | DEVELOP | BRAND</h1> <h4 class="service fade-in3"><a href="#portfolio">VIEW PORTFOLIO</a></h4> <h4 class="service fade-in3"><a href="#services">VIEW SERVICES</a></h4> </div> <!--<div class="mainbody"><p>safsdaf</p></div>--> </body> </html> CSS @-webkit-keyframes fadeIn { from { opacity:0; } to { opacity:1; } } @-moz-keyframes fadeIn { from { opacity:0; } to { opacity:1; } } @keyframes fadeIn { from { opacity:0; } to { opacity:1; } } * { padding: 0; margin: 0; } li { display: inline; font-size: 15px; font-family: verdana; } nav { width: 100%; text-align: right; background-color: #222222; padding: 0; margin: 0px; line-height: 47px; position: fixed; z-index: 100; } .ak{ width: 90px; height: 55px; z-index: 101; position: fixed; background: transparent; color: transparent; background-color: transparent; } .Nav a{ text-decoration: none; padding: 15px; } .Nav a:link{ color: #A7A7A7; } .Nav a:visited{ color: #A7A7A7; } .Nav a:hover{ color: #DBDBDB; transition: all 0.3s ease-out 0s; transition-property: all; transition-duration: 0.3s; transition-timing-function: ease-out; transition-delay: 0s; } .header { background-color: rgba(0,0,0, 0.25); width: 100%; height: 626px; text-align: center; position: fixed; z-index: 10; } .background { position: fixed; z-index: 8; } .beauty { width: 100%; height: 626px; } .headerName { font-size: 2.5em; text-align: center; color: #D3D3D3; padding: 180px; padding-bottom: 50px; margin: 0px; letter-spacing: 4px; font-weight: 100; font-family: 'Lato', sans-serif; } .fade-in { opacity:0; /* make things invisible upon start */ -webkit-animation:fadeIn ease-in 1; /* call our keyframe named fadeIn, use animation ease-in and repeat it only 1 time */ -moz-animation:fadeIn ease-in 1; animation:fadeIn ease-in 1; -webkit-animation-fill-mode:forwards; /* this makes sure that after animation is done we remain at the last keyframe value (opacity: 1)*/ -moz-animation-fill-mode:forwards; animation-fill-mode:forwards; -webkit-animation-duration:1s; -moz-animation-duration:1s; animation-duration:1s; -webkit-animation-delay: 0.3s; -moz-animation-delay:0.3s; animation-delay: 0.3s; } .fade-in2 { opacity:0; /* make things invisible upon start */ -webkit-animation:fadeIn ease-in 1; /* call our keyframe named fadeIn, use animation ease-in and repeat it only 1 time */ -moz-animation:fadeIn ease-in 1; animation:fadeIn ease-in 1; -webkit-animation-fill-mode:forwards; /* this makes sure that after animation is done we remain at the last keyframe value (opacity: 1)*/ -moz-animation-fill-mode:forwards; animation-fill-mode:forwards; -webkit-animation-duration:1s; -moz-animation-duration:1s; animation-duration:1s; -webkit-animation-delay: 0.6s; -moz-animation-delay:0.6s; animation-delay: 0.6s; } .fade-in3 { opacity:0; /* make things invisible upon start */ -webkit-animation:fadeIn ease-in 1; /* call our keyframe named fadeIn, use animation ease-in and repeat it only 1 time */ -moz-animation:fadeIn ease-in 1; animation:fadeIn ease-in 1; -webkit-animation-fill-mode:forwards; /* this makes sure that after animation is done we remain at the last keyframe value (opacity: 1)*/ -moz-animation-fill-mode:forwards; animation-fill-mode:forwards; -webkit-animation-duration:1s; -moz-animation-duration:1s; animation-duration:1s; -webkit-animation-delay: 0.9s; -moz-animation-delay:0.9s; animation-delay: 0.9s; } .service{ font-size: 14px; width: 190px; text-align: center; font-family: 'Lato', sans-serif; color: #D3D3D3; border: 2px #A7A7A7 solid; border-color: rgba(255, 255, 255, 0.5); display: inline-block; border-radius: 5px; background-color: transparent; letter-spacing: 2px; } .service a{ text-decoration: none; display: block; padding: 15px 20px; } .service a:link{ color: #D3D3D3; } .service a:visited{ color: #D3D3D3; } .service a:hover{ background-color: rgba(255, 255, 255, 0.15); transition: background-color .15s ease-in; -webkit-transition: background-color .15s ease-in; -moz-transition: background-color .15s ease-in; -o-transition: background-color .15s ease-in; } UPDATE 1: I updated both browsers and it seems the css3 animations work perfectly fine on both browsers. What seems to be the problem is the positioning of the pages UPDATE 2: Here are the links to the different browser screen shots Chrome: https://www.dropbox.com/s/jlpa4vu51kdnews/Chrome.JPG InternetExplorer: https://www.dropbox.com/s/zbchs3su9ahxr0n/IE.JPG Mozilla Firefox: dropbox(.)com/s/fyalnhsha9ktadz/Mozilla.JPG (I can't post the third link because I don't have enough reputation)

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• 501 Error during Libjingle PCP on Amazone EC2 running Openfire

  - by AeroBuffalo

  I am trying to implement Google's Libjingle (version: 0.6.14) PCP example and I am getting a 501: feature not implemented error during execution. Specifically, the error occurs after each "account" has connected, been authenticated and began communicating with the other. An abbreviated log of the interaction is provided at the end. I have set up my own jabber server (using OpenFire on an Amazon EC2 server), have opened all of the necessary ports and have added each "account" to the other's roster. The server has been set to allow for file transfers. My being new to working with servers, I am not sure why this error is occur and how to go about fixing it. Thanks in advance, AeroBuffalo P.S. Let me know if there is any additional information needed (i.e. the full program log for either/both ends). Receiving End: [018:217] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [018:217] <iq to="[email protected]/pcp" type="set" id="5"> [018:217] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="402024303" initiator="[email protected]/pcp"> [018:217] <content name="securetunnel" creator="initiator"> [018:217] <description xmlns="http://www.google.com/talk/securetunnel"> [018:217] <type>send:winein.jpeg</type> [018:217] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:217] </description> [018:217] <transport xmlns="http://www.google.com/transport/p2p"/> [018:217] </content> [018:217] </jingle> [018:217] <session xmlns="http://www.google.com/session" type="initiate" id="402024303" initiator="[email protected]/pcp"> [018:217] <description xmlns="http://www.google.com/talk/securetunnel"> [018:217] <type>send:winein.jpeg</type> [018:217] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:217] </description></session> [018:217] </iq> [018:217] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:217] <presence to="[email protected]/pcp" from="forgesend" type="error"> [018:217] <error code="404" type="cancel"> [018:217] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [018:217] </error></presence> [018:218] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:218] <presence to="[email protected]/pcp" from="forgesend" type="error"> [018:218] <error code="404" type="cancel"> [018:218] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [018:218] </error></presence> [018:264] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:264] <iq type="result" id="3" to="[email protected]/pcp"> [018:264] <query xmlns="google:jingleinfo"> [018:264] <stun> [018:264] <server host="stun.xten.net" udp="3478"/> [018:264] <server host="jivesoftware.com" udp="3478"/> [018:264] <server host="igniterealtime.org" udp="3478"/> [018:264] <server host="stun.fwdnet.net" udp="3478"/> [018:264] </stun> [018:264] <publicip ip="65.101.207.121"/> [018:264] </query></iq> [018:420] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:420] <iq to="[email protected]/pcp" type="set" id="5" from="[email protected]/pcp"> [018:420] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="3548650675" initiator="[email protected]/pcp"> [018:420] <content name="securetunnel" creator="initiator"> [018:420] <description xmlns="http://www.google.com/talk/securetunnel"> [018:420] <type>recv:wineout.jpeg</type> [018:420] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:420] </description> [018:420] <transport xmlns="http://www.google.com/transport/p2p"/> [018:420] </content></jingle> [018:420] <session xmlns="http://www.google.com/session" type="initiate" id="3548650675" initiator="[email protected]/pcp"> [018:420] <description xmlns="http://www.google.com/talk/securetunnel"> [018:420] <type>recv:wineout.jpeg</type> [018:420] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [018:420] </description></session></iq> [018:421] TunnelSessionClientBase::OnSessionCreate: received=1 [018:421] Session:3548650675 Old state:STATE_INIT New state:STATE_RECEIVEDINITIATE Type:http://www.google.com/talk/securetunnel Transport:http://www.google.com/transport/p2p [018:421] TunnelSession::OnSessionState(Session::STATE_RECEIVEDINITIATE) [018:421] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [018:421] <iq to="[email protected]/pcp" id="5" type="result"/> [018:465] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [018:465] <iq to="[email protected]/pcp" id="5" type="result" from="[email protected]/pcp"/> [198:665] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:20:15 2012 [198:665] <iq type="get" id="162-10" from="forgejabber.com" to="[email protected]/pcp"> [198:665] <ping xmlns="urn:xmpp:ping"/> [198:665] /iq> [198:665] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:20:15 2012 [198:665] <iq type="error" id="162-10" to="forgejabber.com"> [198:665] <ping xmlns="urn:xmpp:ping"/> [198:665] <error code="501" type="cancel"> [198:665] <feature-not-implemented xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [198:665] </error> [198:665] </iq> Sender: [019:043] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:043] <iq type="get" id="3"> [019:043] <query xmlns="google:jingleinfo"/> [019:043] </iq> [019:043] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:043] <iq to="[email protected]/pcp" type="set" id="5"> [019:043] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="3548650675" initiator="[email protected]/pcp"> [019:043] <content name="securetunnel" creator="initiator"> [019:043] <description xmlns="http://www.google.com/talk/securetunnel"> [019:043] <type>recv:wineout.jpeg</type> [019:043] <client-cert>--BEGIN CERTIFICATE----END CERTIFICATE--</client-cert> [019:043] </description> [019:043] <transport xmlns="http://www.google.com/transport/p2p"/> [019:043] </content> [019:043] </jingle> [019:043] <session xmlns="http://www.google.com/session" type="initiate" id="3548650675" initiator="[email protected]/pcp"> [019:043] <description xmlns="http://www.google.com/talk/securetunnel"> [019:043] <type>recv:wineout.jpeg</type> [019:043] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:043] </description></session></iq> [019:043] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:043] <presence to="[email protected]/pcp" from="forgereceive" type="error"> [019:043] <error code="404" type="cancel"> [019:043] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [019:043] </error></presence> [019:044] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:044] <presence to="[email protected]/pcp" from="forgereceive" type="error"> [019:044] <error code="404" type="cancel"> [019:044] <remote-server-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [019:044] </error></presence> [019:044] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:044] <iq to="[email protected]/pcp" type="set" id="5" from="[email protected]/pcp"> [019:044] <jingle xmlns="urn:xmpp:jingle:1" action="session-initiate" sid="402024303" initiator="[email protected]/pcp"> [019:044] <content name="securetunnel" creator="initiator"> [019:044] <description xmlns="http://www.google.com/talk/securetunnel"> [019:044] <type>send:winein.jpeg</type> [019:044] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:044] </description> [019:044] <transport xmlns="http://www.google.com/transport/p2p"/> [019:044] </content></jingle> [019:044] <session xmlns="http://www.google.com/session" type="initiate" id="402024303" initiator="[email protected]/pcp"> [019:044] <description xmlns="http://www.google.com/talk/securetunnel"> [019:044] <type>send:winein.jpeg</type> [019:044] <client-cert>--BEGIN CERTIFICATE--END CERTIFICATE--</client-cert> [019:044] </description></session></iq> [019:044] TunnelSessionClientBase::OnSessionCreate: received=1 [019:044] Session:402024303 Old state:STATE_INIT New state:STATE_RECEIVEDINITIATE Type:http://www.google.com/talk/securetunnel Transport:http://www.google.com/transport/p2p [019:044] TunnelSession::OnSessionState(Session::STATE_RECEIVEDINITIATE) [019:044] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:17:15 2012 [019:044] <iq to="[email protected]/pcp" id="5" type="result"/> [019:088] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:088] <iq type="result" id="3" to="[email protected]/pcp"> [019:088] <query xmlns="google:jingleinfo"> [019:088] <stun> [019:088] <server host="stun.xten.net" udp="3478"/> [019:088] <server host="jivesoftware.com" udp="3478"/> [019:088] <server host="igniterealtime.org" udp="3478"/> [019:088] <server host="stun.fwdnet.net" udp="3478"/> [019:088] </stun> [019:088] <publicip ip="65.101.207.121"/> [019:088] </query> [019:088] </iq> [019:183] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:17:15 2012 [019:183] <iq to="[email protected]/pcp" id="5" type="result" from="[email protected]/pcp"/> [199:381] RECV <<<<<<<<<<<<<<<<<<<<<<<<< : Thu Jul 5 14:20:15 2012 [199:381] <iq type="get" id="474-11" from="forgejabber.com" to="[email protected]/pcp"> [199:381] <ping xmlns="urn:xmpp:ping"/> [199:381] </iq> [199:381] SEND >>>>>>>>>>>>>>>>>>>>>>>>> : Thu Jul 5 14:20:15 2012 [199:381] <iq type="error" id="474-11" to="forgejabber.com"> [199:381] <ping xmlns="urn:xmpp:ping"/> [199:381] <error code="501" type="cancel"> [199:381] <feature-not-implemented xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> [199:382] </error></iq>

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• Architectural advice - web camera remote access

  - by Alan Hollis

  I'm looking for architectural advice. I have a client who I've built a website for which essentially allows users to view their web cameras remotely. The current flow of data is as follows: User opens page to view web camera image. Javascript script polls url on server ( appended with unique timestamp ) every 1000ms Ftp connection is enabled for the cameras ftp user. Web camera opens ftp connection to server. Web camera begins taking photos. Web camera sends photo to ftp server. On image url request: Server reads latest image on hard drive uploaded via ftp for camera. Server deleted any older images from the server. This is working okay at the moment for a small amount of users/cameras ( about 10 users and around the same amount of cameras), but we're starting to worrying about the scalability of this approach. My original plan was instead of having the files read from the server, the web server would open up an ftp connection to the web server and read the latest images directly from there meaning we should have been able to scale horizontally fairly easily. But ftp connection establishment times were too slow ( mainly due to the fact that PHP out of the ox is unable to persist ftp connections ) and so we abandoned this approach and went straight for reading from the hard drive. The firmware provider for the cameras state they're able to build a http client which instead of using ftp to upload the image could post the image to a web server. This seems plausible enough to me, but I'm looking for some architectural advice. My current thought is a simple Nginx/PHP/Redis stack. Web camera issues post requests of latest image to Nginx/PHP and the latest image for that camera is stored in Redis. The clients can then pull the latest image from Redis which should be extremely quick as the images will always be stored in memory. The data flow would then become: User opens page to view web camera image. Javascript script polls url on server ( appended with unique timestamp ) every 1000ms Camera is sent an http request to start posting images to a provided url Web camera begins taking photos. Web camera sends post requests to server as fast as it can On image url request: Server reads latest image from redis Server tells redis to delete later image My questions are: Are there any greater overheads of transferring images via HTTP instead of FTP? Is there a simple way to calculate how many potential cameras we could have streaming at once? Is there any way to prevent potentially DOS'ing our own servers due to web camera requests? Is Redis a good solution to this problem? Should I abandon PHP/Ngix combination and go for something else? Is this proposed solution actually any good? Will adding HTTPs to the mix cause posting the image to become too slow? Thanks in advance Alan

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• 10 Essential Tools for building ASP.NET Websites

  - by Stephen Walther

  I recently put together a simple public website created with ASP.NET for my company at Superexpert.com. I was surprised by the number of free tools that I ended up using to put together the website. Therefore, I thought it would be interesting to create a list of essential tools for building ASP.NET websites. These tools work equally well with both ASP.NET Web Forms and ASP.NET MVC. Performance Tools After reading Steve Souders two (very excellent) books on front-end website performance High Performance Web Sites and Even Faster Web Sites, I have been super sensitive to front-end website performance. According to Souders’ Performance Golden Rule: “Optimize front-end performance first, that's where 80% or more of the end-user response time is spent” You can use the tools below to reduce the size of the images, JavaScript files, and CSS files used by an ASP.NET application. 1. Sprite and Image Optimization Framework CSS sprites were first described in an article written for A List Apart entitled CSS sprites: Image Slicing’s Kiss of Death. When you use sprites, you combine multiple images used by a website into a single image. Next, you use CSS trickery to display particular sub-images from the combined image in a webpage. The primary advantage of sprites is that they reduce the number of requests required to display a webpage. Requesting a single large image is faster than requesting multiple small images. In general, the more resources – images, JavaScript files, CSS files – that must be moved across the wire, the slower your website. However, most people avoid using sprites because they require a lot of work. You need to combine all of the images and write just the right CSS rules to display the sub-images. The Microsoft Sprite and Image Optimization Framework enables you to avoid all of this work. The framework combines the images for you automatically. Furthermore, the framework includes an ASP.NET Web Forms control and an ASP.NET MVC helper that makes it easy to display the sub-images. You can download the Sprite and Image Optimization Framework from CodePlex at http://aspnet.codeplex.com/releases/view/50869. The Sprite and Image Optimization Framework was written by Morgan McClean who worked in the office next to mine at Microsoft. Morgan was a scary smart Intern from Canada and we discussed the Framework while he was building it (I was really excited to learn that he was working on it). Morgan added some great advanced features to this framework. For example, the Sprite and Image Optimization Framework supports something called image inlining. When you use image inlining, the actual image is stored in the CSS file. Here’s an example of what image inlining looks like: .Home_StephenWalther_small-jpg { width:75px; height:100px; background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEsAAABkCAIAAABB1lpeAAAAB GdBTUEAALGOfPtRkwAAACBjSFJNAACHDwAAjA8AAP1SAACBQAAAfXkAAOmLAAA85QAAGcxzPIV3AAAKL s+zNfREAAAAASUVORK5CYII=) no-repeat 0% 0%; } The actual image (in this case a picture of me that is displayed on the home page of the Superexpert.com website) is stored in the CSS file. If you visit the Superexpert.com website then very few separate images are downloaded. For example, all of the images with a red border in the screenshot below take advantage of CSS sprites: Unfortunately, there are some significant Gotchas that you need to be aware of when using the Sprite and Image Optimization Framework. There are workarounds for these Gotchas. I plan to write about these Gotchas and workarounds in a future blog entry. 2. Microsoft Ajax Minifier Whenever possible you should combine, minify, compress, and cache with a far future header all of your JavaScript and CSS files. The Microsoft Ajax Minifier makes it easy to minify JavaScript and CSS files. Don’t confuse minification and compression. You need to do both. According to Souders, you can reduce the size of a JavaScript file by an additional 20% (on average) by minifying a JavaScript file after you compress the file. When you minify a JavaScript or CSS file, you use various tricks to reduce the size of the file before you compress the file. For example, you can minify a JavaScript file by replacing long JavaScript variables names with short variables names and removing unnecessary white space and comments. You can minify a CSS file by doing such things as replacing long color names such as #ffffff with shorter equivalents such as #fff. The Microsoft Ajax Minifier was created by Microsoft employee Ron Logan. Internally, this tool was being used by several large Microsoft websites. We also used the tool heavily on the ASP.NET team. I convinced Ron to publish the tool on CodePlex so that everyone in the world could take advantage of it. You can download the tool from the ASP.NET Ajax website and read documentation for the tool here. I created the installer for the Microsoft Ajax Minifier. When creating the installer, I also created a Visual Studio build task to make it easy to minify all of your JavaScript and CSS files whenever you do a build within Visual Studio automatically. Read the Ajax Minifier Quick Start to learn how to configure the build task. 3. ySlow The ySlow tool is a free add-on for Firefox created by Yahoo that enables you to test the front-end of your website. For example, here are the current test results for the Superexpert.com website: The Superexpert.com website has an overall score of B (not perfect but not bad). The ySlow tool is not perfect. For example, the Superexpert.com website received a failing grade of F for not using a Content Delivery Network even though the website using the Microsoft Ajax Content Delivery Network for JavaScript files such as jQuery. Uptime After publishing a website live to the world, you want to ensure that the website does not encounter any issues and that it stays live. I use the following tools to monitor the Superexpert.com website now that it is live. 4. ELMAH ELMAH stands for Error Logging Modules and Handlers for ASP.NET. ELMAH enables you to record any errors that happen at your website so you can review them in the future. You can download ELMAH for free from the ELMAH project website. ELMAH works great with both ASP.NET Web Forms and ASP.NET MVC. You can configure ELMAH to store errors in a number of different stores including XML files, the Event Log, an Access database, a SQL database, an Oracle database, or in computer RAM. You also can configure ELMAH to email error messages to you when they happen. By default, you can access ELMAH by requesting the elmah.axd page from a website with ELMAH installed. Here’s what the elmah page looks like from the Superexpert.com website (this page is password-protected because secret information can be revealed in an error message): If you click on a particular error message, you can view the original Yellow Screen ASP.NET error message (even when the error message was never displayed to the actual user). I installed ELMAH by taking advantage of the new package manager for ASP.NET named NuGet (originally named NuPack). You can read the details about NuGet in the following blog entry by Scott Guthrie. You can download NuGet from CodePlex. 5. Pingdom I use Pingdom to verify that the Superexpert.com website is always up. You can sign up for Pingdom by visiting Pingdom.com. You can use Pingdom to monitor a single website for free. At the Pingdom website, you configure the frequency that your website gets pinged. I verify that the Superexpert.com website is up every 5 minutes. I have the Pingdom service verify that it can retrieve the string “Contact Us” from the website homepage. If your website goes down, you can configure Pingdom so that it sends an email, Twitter, SMS, or iPhone alert. I use the Pingdom iPhone app which looks like this: 6. Host Tracker If your website does go down then you need some way of determining whether it is a problem with your local network or if your website is down for everyone. I use a website named Host-Tracker.com to check how badly a website is down. Here’s what the Host-Tracker website displays for the Superexpert.com website when the website can be successfully pinged from everywhere in the world: Notice that Host-Tracker pinged the Superexpert.com website from 68 locations including Roubaix, France and Scranton, PA. Debugging I mean debugging in the broadest possible sense. I use the following tools when building a website to verify that I have not made a mistake. 7. HTML Spell Checker Why doesn’t Visual Studio have a built-in spell checker? Don’t know – I’ve always found this mysterious. Fortunately, however, a former member of the ASP.NET team wrote a free spell checker that you can use with your ASP.NET pages. I find a spell checker indispensible. It is easy to delude yourself that you are capable of perfect spelling. I’m always super embarrassed when I actually run the spell checking tool and discover all of my spelling mistakes. The fastest way to add the HTML Spell Checker extension to Visual Studio is to select the menu option Tools, Extension Manager within Visual Studio. Click on Online Gallery and search for HTML Spell Checker: 8. IIS SEO Toolkit If people cannot find your website through Google then you should not even bother to create it. Microsoft has a great extension for IIS named the IIS Search Engine Optimization Toolkit that you can use to identify issue with your website that would hurt its page rank. You also can use this tool to quickly create a sitemap for your website that you can submit to Google or Bing. You can even generate the sitemap for an ASP.NET MVC website. Here’s what the report overview for the Superexpert.com website looks like: Notice that the Sueprexpert.com website had plenty of violations. For example, there are 65 cases in which a page has a broken hyperlink. You can drill into these violations to identity the exact page and location where these violations occur. 9. LinqPad If your ASP.NET website accesses a database then you should be using LINQ to Entities with the Entity Framework. Using LINQ involves some magic. LINQ queries written in C# get converted into SQL queries for you. If you are not careful about how you write your LINQ queries, you could unintentionally build a really badly performing website. LinqPad is a free tool that enables you to experiment with your LINQ queries. It even works with Microsoft SQL CE 4 and Azure. You can use LinqPad to execute a LINQ to Entities query and see the results. You also can use it to see the resulting SQL that gets executed against the database: 10. .NET Reflector I use .NET Reflector daily. The .NET Reflector tool enables you to take any assembly and disassemble the assembly into C# or VB.NET code. You can use .NET Reflector to see the “Source Code” of an assembly even when you do not have the actual source code. You can download a free version of .NET Reflector from the Redgate website. I use .NET Reflector primarily to help me understand what code is doing internally. For example, I used .NET Reflector with the Sprite and Image Optimization Framework to better understand how the MVC Image helper works. Here’s part of the disassembled code from the Image helper class: Summary In this blog entry, I’ve discussed several of the tools that I used to create the Superexpert.com website. These are tools that I use to improve the performance, improve the SEO, verify the uptime, or debug the Superexpert.com website. All of the tools discussed in this blog entry are free. Furthermore, all of these tools work with both ASP.NET Web Forms and ASP.NET MVC. Let me know if there are any tools that you use daily when building ASP.NET websites.

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• HTTP 2.0 serait bloqué par l'ajout de SPDY de Google, un ingénieur de FreeBSD traite le projet de « fiasco » et demande son abandon pour HTTP 3.0

  HTTP 2.0 serait bloqué par l'intégration de SPDY de Google Un ingénieur de FreeBSD traite le projet de « fiasco »et demande son abandon au profit de HTTP 3.0Le groupe de travail de l'IETF (Internet Engineering Task Force) sur la version 2.0 de la norme HTTP (Hypertext Transfer Protocol) fait face à une crise qui pourrait entrainer un retard de la publication de celle-ci.Pour rappel, HTTP 2.0 est conçu pour permettre aux navigateurs de charger des pages Web plus rapidement. La sortie de la version...

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• Why no developer API in C++ for Google or Yahoo mail?

  - by Fanatic23

  I was trying to do some C++ coding that can send files from my laptop to my webmail account. It took me about 10 minutes to realize that there is no easy way to do this. Look into these links: GMAIL: http://code.google.com/apis/gmail/oauth/code.html YAHOO: http://developer.yahoo.com/mail/ I am trying to understand why PHP or Python or Java support exist but no C++. No flame wars, I love all programming languages and their creators equally but I am curious to understand the logic behind such implementation choices.

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• Dunod dévoile sa collection « Cookbook », découvrez les recettes de pros pour le Référencement Google et le Développement Android 4

  Dunod dévoile sa collection « Cookbook » découvrez les recettes de pros pour le Référencement Google et le Développement Android 4« L'informatique, c'est parfois un peu comme la cuisine : il faut assembler un certain nombre d'ingrédients et d'actions selon un enchaînement très précis. », introduit Dunod pour présenter sa nouvelle collection Cookbook.Le principe de la collection Cookbook est de rassembler dans un seul ouvrage un certain nombre de « recettes » qui fournissent des réponses concrètes...

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• Is there such a thing as a Google Result Set simulator?

  - by Dave Adams

  I am always making tweaks to my site, be it in the .htaccess file, some new SEO plugin, different types of content or whatever. For all these changes, I would really like to be able test it immediately and see if the change had any positive or negative effect. I am just wondering if there was some way of doing immediate testing using some simulator instead of having to wait for Google to discover and index it - which could take a long time.

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