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• Reliably detect caller domain over cURL request?

  - by Utkanos

  OK so server-side security is not my forte. Basically, I'm building a service which users may use (via an SDK) only on the domain they stipulated when they signed up. The SDK calls my web service over cURL in PHP. Would I be right in thinking I cannot reliably detect the caller domain, i.e. enforce that it is the same domain they stipulated when signing up? cURL of course sends this over headers, but headers can always (?) be faked. Is there a better course of action to enforce domain for this sort of thing? (NB I'm already using an API key, too - it's just I wanted to restrict domain, too) Thanks in advance

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• How can I use Amazon's API in PHP to search for books?

  - by TerranRich

  I'm working on a Facebook app for book sharing, reviewing, and recommendations. I've scoured the web, searched Google using every search phrase I could think of, but I could not find any tutorials on how to access the Amazon.com API for book information. I signed up for an AWS account, but even the tutorials on their website didn't help me one bit. They're all geared toward using cloud computing for file storage and processing, but that's not what I want. I just want to access their API to search info on books. Kind of like how http://openlibrary.org/ does it, where it's a simple URL call to get information on a book (but their databases aren't nearly as populated as Amazon's). Why is it so damned hard to find the information I need on Amazon's AWS site? If anybody could help, I would greatly appreciate it.

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• Most efficient way to download media files from a server from within an iPhone app.

  - by nikki

  Hi, I have an iPhone application which contains a lot of media files, so far we have been able to keep the size of the iPhone app to less than 20 MB. We add new content with new updates, it would be difficult to keep the app size within the 20 MB limit. The right thing to do here would be to fetch the files on demand from a media/web server. If you have any pointers on how to go about doing this, please suggest. What we would need is to fetch the media files (.jpg/.png images ) on demand when the user taps on a small thumbnail for the image. Are there existing frameworks/servers that provide such services to iPhone clients. Thanks.

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• Rewriting URL in AJAX application

  - by Artem Moskalev

  I am making a simple online application. I have a navigation bar with a few buttons and one "div" into which all the new contents will be loaded dynamically i.e. when I click "About", it will load the page parts into the "div" without reloading the whole page with .load() function. The problem is: what if I need to give a link to the Documents section of my web site, or the user wants to store this kind of link, the url is not rewritten when browsing my site. when the user stores the default link it will always link him to the default "Home" part. How can I rewrite the URL and what is the most correct way to do this?

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• problem when migrating from development into live server

  - by justjoe

  I'm facing problem when migrate my web app project from development server to live server. the reason is because i just realize that the live server has different PHP version and available memory lower then mine. i found this after client give me their ftp and cpanel access of their server, which is a shared host. so, how do we handle this situation ? and avoid similar problem in the future ? What is the most suitable configuration of a development server ? btw, i use xampp in windows. it's has apache and mysql.

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• Taking web page screen shot in Windows 8 Metro app

  - by Megan

  I'm trying to take screen shot of web page in Windows 8 Metro app. So far the only helpful control is the WebView. Unfortunately it does not contain any method like DrawToBitmap (known from Forms WebBrowser control). Am I missing something? Different approach would focus on injecting some JS (e.g. html2canvas) to page rendered in WebView but I don't think it is possible due to security reasons. I would greatly appreciate any help.

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• Bypass using Alter Access Mappings for to Open Web from SPItemEventProperties

  - by Greg Ogle

  In the following code, // class overrides SPItemEventreceiver public override void ItemAdding(SPItemEventProperties properties) { using (var site = new SPSite(properties.SiteId)) //SiteId is integer { ... } } The following exception is thrown: System.IO.FileNotFoundException: The Web application at http://URL could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application. One way to work around this is to hard-code (or configure) the URL specified in Alternate Access Mappings. Putting the correct URL in Alternate Access Mappings is ultimately the correct solution, but if possible, I need a work-around that doesn't require configuration.

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• REST - why we need million urls and different HTTP request?

  - by Andre

  I asked this question. But I still don't understand why we need to utilize different HTTP requests: DELETE/PUT/POST/GET in order to build nice API Wouldn't it be a lot simpler to pass all information in request parameters and have a SINGLE ENTRY-POINT for your api?: GET www.example.com/api?id=1&method=delete&returnformat=JSON GET www.example.com/api?id=1&method=delete&returnformat=XML or POST www.example.com/api {post data: id=1&method=delete&returnformat=JSON} POST www.example.com/api {post data: id=1&method=delete&returnformat=XML} and then - we can handle all methods and data internally without the need for hundreds of urls... how would you call this type of API - It's not REST apparently, it's not SOAP. then - what is it? UPDATE I'm not proposing any new standards here. I merely asking a question in order to better understand why web services work the way they work.

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• WebService loggin using log4j in tomcat container

  - by KItis

  Hi, I have my webservice deployed on Apache tomcat 5.5. When I run my webservice using eclipse IDE, it prints logs to the location I have specified . I have put log4j property file for my webservice in the apache-tomcat-5.5.28/common/classes folder. Problem is , when i run this using webservice .aar file which is put in to apache-tomcat-5.5.28/webapps/axis2/WEB-INF/classes folder in the webservice ,it does not print logs. Could anyone tell me what is going wrong here. why does it print logs when running from eclipse ide and, why is it not printing logs when it is started using the aar file deployed to tomcat

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• Session-timeout configuration doesn't work?

  - by David

  In web.xml I have this <session-config> <session-timeout>2</session-timeout> </session-config> <listener> <listener-class>myapplication.SessionListener</listener-class> In the SessionListener.java I have public void sessionDestroyed (HttpSessionEvent event){ System.out.println("Visitor Removed!!"); } But it seems System.out.println("Visitor Removed!!") has never been executed. I am new to Tombat6 and JSp. Any suggestion please?

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• As an admin, what tools do you use to log what you do to your boxes?

  - by Jerry

  I am more of a linux applications developer than an admin. Over time, I've built servers and maintained them, sometimes to offer services, mostly just to develop the applications I work on. Way back when I would create a file in my account to keep notes on what I did on each machine, so that I could replicate that when I migrated to other machines. Nowadays, I install something a private trac installation, install it's blog plugin, and then use that to make notes of everything I install, and most commands that I run, as well as the output. This provides me a combination wiki and blog that I find very useful as a "captain's log". I do this mostly so that when I migrate to a new clean machine, I have a much easier time in bringing it up. And yet, I am always amazed when I see others just install this, delete that, run this, setup this config, ... without seeming to use any way to actually note what they are doing. What do YOU do, and what tools are available? I am especially interested in the transition between maintaining a few machines for a few people and maintaining several to dozens of machines providing a real service. What are the best practices, and where can I find good resources? Thanks!

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• Approaches to timing out sessions on a web app using AJAX autorefreshes

  - by Braintapper

  I'm writing a web application that autorefreshes data with an AJAX call at set intervals. Because it's doing that, server side user sessions never time out, since the last activity is refreshed with every ajax call. Are there good client side rules I could implement to time out the user? I.e. should I track mouse movements in the browser, etc., or should I point the AJAX calls to URLs that don't refresh the session? I like that my AJAX calls hit a session-enabled URL, because I can also validate that the user is logged in, etc. Any thoughts in terms of whether I should even bother timing out the users?

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• Session being reset when using sub-domain.

  - by Adam Witko

  Hi, I'm trying to use sub-domains in my ASP.NET website but I'm coming across a few problems with the session being reset. I've edited my hosts file to have 'localhost', 'one.localhost' and 'two.localhost'. I can go to any of these URLs and do what I need to do and login to my system. The session mode is defined as follows in the web.config: I'm using SQLServer as the website will be ran as a webfarm. What I'm finding is when I click something that causes a postback all the session is lost and a new session id is created, when this occurs my website is now 'localhost' rather than the logged in 'one.localhost' for example. Does anyone know what might be causing this? Cheers

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• generating an asp.net web application dll requirement list

  - by Oren Mazor

  I'm trying to set up a web app (32bit on ii7/win7, 32bit setting is enabled, everything is compiled to x86, using vs2008), but there's clearly some dll module loading issue happening. I've been watching procmon and fusion logs but I'm not seeing the name of the missing dll. I'm a complete newbie to asp.net (but fairly heavy experience on other platforms). I know I can call depends.exe on a binary to see what the dependancies are, but how do I do it for asp.net? specifically, is it possible to get a list of the dlls that iis7 loads for my application?

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• Apache security for multi-user development web server.

  - by mrmartinblue

  I've been searching and reading through documents all morning and understand that I need to use some combination of chown and probably 'jailing' to securely give programmers access to directories on my centos webserver. Here's the situation: I have an apache web server that has any number of virtual sites located in /var/www/site1 /var/www/site2 etc.. I have different developers that need full access both ssh and vsFTP to only the site they are working on. What is the best way to create and maintain security in this scenario. My thought would be to create a new user for each coder, jail that user to the website directory they are allowed to work in, add their user to a group and set the webroot's owner to that group. Any thoughts? Good, bad, ugly? Thanks!

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• Is the web hosting location important these days?

  - by kristof

  I was recently looking at some web hosting solutions and some of the providers offered various hosting locations e.g. US or UK based servers. My question is: does it really make a difference from the performance point of view? Lets say that I am expecting most of the traffic coming from continental Europe? Would the fact that the servers are based in UK make bigger difference if the traffic was coming from the UK. Any pros and cons of having a website hosted in the same county as the most of the expected traffic?

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• Free and Simple Hosting Solution with DB Support?

  - by darren

  Hi everyone I have compiled an sqlite database that I would like to make public. I want to provide a very simple webpage that has a few form elements which are used to query the database. Does anybody know of a free hosting solution that would provide me with free web and database functionality? I am familiar with Google App Engine and that would work but I don't want to spend time using their custom storage scheme. I'm looking for something free that I can put together very quickly. Thanks for any suggestions.

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• Call Web Service from https and parse responded xml data in Java

  - by Nirmal

  Hello All.. I need to get connect with https url, send my request schema and I will get some xml response from web service. For https url connection I am using : HttpURLConnection con = (HttpURLConnection)myurl.openConnection(); con.setDoOutput(true); con.setDoInput(true); con.setUseCaches(false); InputStream ins = con.getInputStream(); con.setRequestProperty("Content-type","text/xml"); So, from above code I am getting responded XML from server. Now my question is which would be best parser for me to parse responded xml data to my Simple Java Object. I have goggled alot on that, and getting various solutions but I have confuse for choosing appropriate one. if anybody have suggestion with some sample example, then please provide.. Thanks in advance...

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• Multimedia content in REST responce(XML/JSON)

  - by Koushik

  In my thesis I need to test different architectures. A request to a REST web service developed using Apache CXF and Spring MVC with MySQL as back end serving references(a field in database) to images,audio and video files stored in file system. In the response message, what is the best method to send the content to the client(another application using the service which I developed). URI: http://www.filmservices.com/film/{id} A client here is not the end user. Send the encoded hyperlink's(where the content is stored in the file system) to the client, so that the client renders the response and displays it to the browser. Use Base64 to encode the message(image,audio,video) and send it to the client. Main concern is performance.

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• how use ASP.NET_SessionId cookies to check timeout for 2 different web applications

  - by user553858

  Hi All I am developing 2 web applications based on "ASP.NET_SessionId" cookies to check session timeout and also to logout : protected void Session_Start(object sender, EventArgs e) { if (Context.Session != null) { //check the IsNewSession value, this will tell us if the session has been reset if (Session.IsNewSession) { string cookie = Request.Headers["Cookie"]; // Code that runs when a new session is started if ((null != cookie) && (cookie.IndexOf("ASP.NET_SessionId") >= 0)) { if (Request.QueryString["timeout"] == null || !Request.QueryString["timeout"].ToString().Equals("yes")) Session.Abandon(); Session.Clear(); Response.Redirect("Login.aspx?timeout=yes"); } } } } This works fine for my first application. When implementing the same logic for the 2nd application when I press logout in one application, the second application is redirected to the login page. How can I fix this? Best regards

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• Morfik - suitability for medium-scale web enterprise applications

  - by MaikB

  I'm investigating technologies with which to develop a medium-scale (up to 100 or 200 simultaneous users) database-driven web application, and someone suggested Morfik. However, outside of the Morfik company I can find practically zero community support - no active blogs, no tutorials, no videos, no books - and this is of some concern (especially when compared to C# / ASP.NET / nHibernate etc support). Deciding between Morfik (untried and not used widely AFAIK) and the other technologies I mentioned (tried, tested, used widely) is becoming a critical issue for my company. Has anyone had success using Morfik in these kind of circumstances? What kind of performance did you achieve?

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• Calling a web service from javascript and .net 2.0

  - by rod

  Hi All, Is it possible to call a web service (on my localhost) from jquery in a plain html page inside an asp.net 2.0 application? <script type="text/javascript"> $(document).ready(function(){ $('#button1').click(function(){ $('#targetDiv').load('http://localhost/testservice/Service1.asmx/HelloWorld',null,function(){alert('test')}); }); }); </script> I'm getting a 500 error? Not sure if it's even possible to do this way? thanks, rod

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• Unique serial number in a java web application.

  - by Zenzen

  I've been wondering what's the correct practice for generating unique ids? The thing is in my web app I'll have a plugin system, when a user registers a plugin I want to generate a unique serial ID for it. I've been thinking about storing all numbers in a DB or a file on the server, generating a random number and checking whether it already exists in the DB/file, but that doesn't seem that good. Are there other ways to do it? Would using the UUID be the preferred way to go?

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• Are there any good resources on developing ASP.NET for Windows CE Internet Explorer?

  - by IronicMuffin

  I've been tasked with creating a web app to be consumed by a mobile device sporting Windows CE 5.0 (and some with Windows CE 4.2). I've found a host of things that seem to work fine in IE6 on my desktop, but fail when rendered in IE for Windows CE. IE6 is bad enough as it is...does it lose any more functionality on an embedded system? Are there quirks that a developer would need to know about? AJAX seems extremely unlikely. JavaScript seems quirky when linking to a .js file. Panels with scrollbars are finicky. Textboxes can't get focus. DefaultButtons on a form don't work. Any help or resources you can provide would be greatly appreciated.

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• UX Design Question: Should a multi step wizard save the form contents when the user clicks 'go back'

  - by Ashwin Prabhu

  I am developing a web application that collects data over multiple steps through a wizard. Steps are generally not interdependent, in that data input at each step has little or no effect on the consequent steps. However each step may have a set of validations which determine whether the user can progress to the next step by clicking 'continue' What should be the behavior when the user clicks previous? a Quickly move to the previous page, thus losing all the unsaved data in the form. Prompting the user with a warning is an option, but it can become irritating quite soon. b Move to the previous page saving all the data in the current step - without triggering validations, so that when the user comes back she sees the form in the same state that she left it in. c any other behaviour All opinions are welcome :)

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