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• What's the best way to know if your web server goes down?

  - by Mike Christensen

  I noticed my website only got 8 visitors today, which means it probably went down very early this morning and I never noticed. Why it went down is another story. Ideally, I'd like to be emailed if my web server becomes unresponsive or does not return an HTTP 200. Is there either a cloud-based service (either free or pretty cheap) that can monitor your website? If not, is there a good free/open source program I can run on either a Linux or Windows machine that will monitor a website and email me if it goes down? Thanks!

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• OS/X Mavericks won't download in App Store

  - by Mike Christensen

  I tried to download OS/X Mavericks through the App Store yesterday. However, I had to leave work before it was done downloading and shut down the machine while it was downloading. I assumed I'd be able to resume the download, or start over again later. However, now there's no way to get it to download again. When I find OS/X Mavericks in the store, I click on the "Download" link. It asks for my Apple ID which I enter, and it does absolutely nothing. It doesn't begin downloading, and it just still shows the "Download" button. Clicking on it again does nothing. I'm thinking there's something stuck somewhere, like some flag that says this download is in progress or it has already been downloaded. Is there some way to clear that out so I can start downloading it again?

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• Iframe pages on Facebook does not show in Internet Explorer 9 - Windows 7 64-bit

  - by Morten

  Have this very irritating problem with Internet Explorer 9 and Facebook. If I go to Facebook and watch a page with iframes (like IFBML pages) it will not show up in Internet Explorer 9. It shows up in Firefox 4 and Chrome 10, but not in Internet Explorer 9. I run Windows 7 64-bit SP1 (danish). The strange thing is that I own three different PC´s and they all run Windows 64-bit SP1 and all of them has this issue. Can´t figure out what causes this issue. I have tried the following: Uninstalled AVG antivirus and installed Microsoft Antivirus - no change Updated Windows with SP1 - no change Updated from Internet Explorer 9 beta to Internet Explorer 9 final Ed. - no change Emptied cache and temp files in Internet Explorer 9 - no change Made www.facebook.com a trusted site in Internet Explorer 9 - no change And a lot of other things I can not remember I guess....but nothing seems to work. As I´m using quite a lot of my working time developing Facebook Fanpages it is frustrating not to be able to test them in Internet Explorer 9. BTW - it is Internet Explorer 9 32-bit - not 64-bit. Any clues?

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• I need a relatively cheap host, which will be able to handle sudden peaks in traffic?

  - by Morten K

  Hello, We're launching a product in a few months, which will obviously have a website. Judging from our current traffic, we believe that overall traffic will probably not be that much, but we are aiming at promoting the site heavily using social media. This has the typical problem, that IF we get suddenly get picked up by a large tech blog, we will see a sudden burst: A very heavy increase in traffic all of the sudden. If we use a cheap charlie host as our current host is (www.unoeuro.com) or something similar like GoDaddy, I'm afraid that the site will go down under the load. If that happens, then we might as well have thrown our social media marketing dollars out of the window. Our site will be relatively lightweight, all videos hosted at Youtube or Vimeo and other than that mainly just a standard webpage (ie nothing too heavy). I am hoping for recommendations for a good hosting company, which has some form of scalable hosting, so if / when a traffic surge hits, the site will not go down.

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• What are the requirements for gettings django translations to work?

  - by Espen Christensen

  Hi, I am hosting several djangosites on a CentOS 5 box. But I'm having difficulties with translations. So first i had to upgrade the gettext package from 0.14 to 0.16, but that didn't help. Now i can make and compile tranlsations files with the managment commands, but the translations does not show. I am sure that the translation files are located at the right place since they work with the same setup on a local installation, and django's own translation files does not work. (e.g the admin is not translated). What could i be missing in my server setup that makes this happen?

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• Is it possible to use WebMatrix with pure IIS?

  - by Mike Christensen

  I'd like to check out WebMatrix for publishing our site to IIS automatically (right now, I have to zip it up, copy it out, Remote Desktop into the server, unzip it, etc). However, every example I can find on how to setup WebMatrix involves Azure, or using a .publishsettings file that you'd get from your hosting provider. I'm curious if I can publish to a normal, every day IIS server running on Windows Server 2008. So far, all I've done to the IIS server is install Web Deploy, which I believe is the protocol that WebMatrix uses to publish. When I enter the Remote Site Settings screen, I select Enter settings. I select Web Deploy as the protocol, type in my NT domain credentials (I'm an Admin on that server). I put in the site URL for the Site Name and Destination URL. When I click Validate Connection, I get: Am I doing something wrong, or is this just not possible to do?

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• NAT and NGINX on the same server

  - by Morten

  I'm setting up a VPC cluster for my collaborative todo list application www.getdoneapp.com. To have my servers on the private network I need a NAT server so my servers on the private network can connect to the internet to receive updates and what not. The NAT server will consume an elastic IP address, so I'm wondering if I can just have that NAT server run nginx to direct traffic to my internal servers for HTTP. So the question is, is it a bad idea to run NGINX and NAT on the same server, or should I go for consuming 2 elastic IP addresses?

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• CUDA Driver API vs. CUDA runtime

  - by Morten Christiansen

  When writing CUDA applications, you can either work at the driver level or at the runtime level as illustrated on this image (The libraries are CUFFT and CUBLAS for advanced math): I assume the tradeoff between the two are increased performance for the low-evel API but at the cost of increased complexity of code. What are the concrete differences and are there any significant things which you cannot do with the high-level API? I am using CUDA.net for interop with C# and it is built as a copy of the driver API. This encourages writing a lot of rather complex code in C# while the C++ equivalent would be more simple using the runtime API. Is there anything to win by doing it this way? The one benefit I can see is that it is easier to integrate intelligent error handling with the rest of the C# code.

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• StructureMap - Scan - Generic Interface with base implementation and specific.

  - by Morten Schmidt

  Hi I have an interface something like this: interface IGenericSetupViewModel<T> I then have a default implemtation of this, something like this class GenericSetupViewModel<T> : IGenericSetupViewModel<T> For some specific classes i have a specific implementation like this: class ContractSetupViewModel : GenericSetupViewModel<Contract> Now i want to make StructureMap return the correct instance, when asking for a ObjectFactory.GetInstance<GenericSetupViewModel<Contract>(); I would like to get ContractSetupViewModel returned, when asking for anything else, i would like to get an instance of GenericSetupViewModel<T> I tried doing this: StructureMap.ObjectFactory.Configure(x => { x.Scan(y => { y.TheCallingAssembly(); y.AddAllTypesOf(typeof(IGenericSetupViewModel<>)); y.ConnectImplementationsToTypesClosing(typeof(IGenericSetupViewModel<>)); }); }); However this results in me always getting a GenericSetupViewModel and never the ContractSetupViewModel. I dont want to have to specify all specific viewmodels so is there anyway i can get this scan to work ?

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• How can I validate the result in an ASP.NET MVC editor template?

  - by Morten Christiansen

  I have created an editor template for representing selecting from a dynamic dropdown list and it works as it should except for validation, which I have been unable to figure out. If the model has the [Required] attribute set, I want that to invalidate if the default option is selected. The view model object that must be represented as the dropdown list is Selector: public class Selector { public int SelectedId { get; set; } public IEnumerable<Pair<int, string>> Choices { get; private set; } public string DefaultValue { get; set; } public Selector() { //For binding the object on Post } public Selector(IEnumerable<Pair<int, string>> choices, string defaultValue) { DefaultValue = defaultValue; Choices = choices; } } The editor template looks like this: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> <select class="template-selector" id="<%= ViewData.ModelMetadata.PropertyName %>.SelectedId" name="<%= ViewData.ModelMetadata.PropertyName %>.SelectedId"> <% var model = ViewData.ModelMetadata.Model as QASW.Web.Mvc.Selector; if (model != null) { %> <option><%= model.DefaultValue %></option><% foreach (var choice in model.Choices) { %> <option value="<%= choice.Value1 %>"><%= choice.Value2 %></option><% } } %> </select> I sort of got it to work by calling it from the view like this (where Category is a Selector): <%= Html.ValidationMessageFor(n => n.Category.SelectedId)%> But it shows the validation error for not supplying a proper number and it does not care if I set the Required attribute.

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• heroku mongohq and mongoid Mongo::ConnectionFailure

  - by Ole Morten Amundsen

  I have added the mongoHQ addon for mongodb at heroku. It crashes with something like this. connect_to_master': failed to connect to any given host:port (Mongo::ConnectionFailure) The descriptions online (heroku mongohq) are more directed towards mongomapper, as I see it. I'm running ruby 1.9.1 and rails 3-beta with mongoid. My feeling says that there's something with ENV['MONGOHQ_URL'], which it says the MongoHQ addon sets, but I haven't set MONGOHQ_URL anywhere in my app. I guess the problem is in my mongoid.yml ? defaults: &defaults host: localhost development: <<: *defaults database: aliado_development test: <<: *defaults database: aliado_test # set these environment variables on your prod server production: <<: *defaults host: <%= ENV['MONGOID_HOST'] %> port: <%= ENV['MONGOID_PORT'] %> username: <%= ENV['MONGOID_USERNAME'] %> password: <%= ENV['MONGOID_PASSWORD'] %> database: <%= ENV['MONGOID_DATABASE'] %> It works fine locally, but fails at heroku, more stack trace: ==> crashlog.log <== Cannot write to outdated .bundle/environment.rb to update it /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/rack-1.1.0/lib/rack.rb:14: warning: already initialized constant VERSION /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongo-0.20.1/lib/mongo/connection.rb:435:in `connect_to_master': failed to connect to any given host:port (Mongo::ConnectionFailure) from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongo-0.20.1/lib/mongo/connection.rb:112:in `initialize' from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongoid-2.0.0.beta4 /lib/mongoid/railtie.rb:32:in `new' from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongoid-2.0.0.beta4/lib/mongoid/railtie.rb:32:in `block (2 levels) in <class:Railtie>' from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongoid-2.0.0.beta4/lib/mongoid.rb:110:in `configure' from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/mongoid-2.0.0.beta4/lib/mongoid/railtie.rb:21:in `block in <class:Railtie>' from /disk1/home/slugs/176479_b14df52_b875/mnt/.bundle/gems/gems/railties-3.0.0.beta3/lib/rails/initializable.rb:25:in `instance_exec' ..... It all works locally, both tests and app. I'm out of ideas... Any suggestions? PS: Somebody with high repu mind create the tag 'mongohq'?

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• Preventing sleep in Titanium for iPhone

  - by Morten J

  I'm trying to read the accelerometer for a longer period of time (between one and two hours). However, when the iPhone goes to sleep and locks, the reading of the accelerometer readout is paused. My setInterval timer seems to be running fine though. I can also play sounds. I see two solutions a) Find a way to read the accelerometer while locked b) Find a way to prevent the lock I'm using Titanium with JavaScript.

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• Java RMI (Server: TCP Connection Idle/Client: Unmarshalexception (EOFException))

  - by Perry Dahl Christensen

  I'm trying to implement Sun Tutorials RMI application that calculates Pi. I'm having some serious problems and I cant find the solution eventhough I've been searching the entire web and several javaskilled people. I'm hoping you can put an end to my frustrations. The crazy thing is that I can run the application from the cmd on my desktop computer. Trying the exact same thing with the exact same code in the exact same directories on my laptop produces the following errors. The problem occures when I try to connect the client to the server. I don't believe that the error is due to my policyfile as I can run it on the desktop. It must be elsewhere. Have anyone tried the same and can you give me a hint as to where my problem is, please? POLICYFILE SERVER: grant { permission java.security.AllPermissions; permission java.net.SocketPermission"*", "connect, resolve"; }; POLICYFILE CLIENT: grant { permission java.security.AllPermissions; permission java.net.SocketPermission"*", "connect, resolve"; }; SERVERSIDE ERRORS: Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\STUDENTcd\ C:start rmiregistry C:java -cp c:\java;c:\java\compute.jar -Djava.rmi.server.codebase=file:/c:/jav a/compute.jar -Djava.rmi.server.hostname=localhost -Djava.security.policy=c:/jav a/servertest.policy engine.ComputeEngine ComputeEngine bound Exception in thread "RMI TCP Connection(idle)" java.security.AccessControlExcept ion: access denied (java.net.SocketPermission 127.0.0.1:1440 accept,resolve) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkAccept(Unknown Source) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.checkAcceptPermi ssion(Unknown Source) at sun.rmi.transport.tcp.TCPTransport.checkAcceptPermission(Unknown Sour ce) at sun.rmi.transport.Transport$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Unknown Source) at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Sou rce) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Sour ce) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source ) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) CLIENTSIDE ERRORS: Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\STUDENTcd\ C:java -cp c:\java;c:\java\compute.jar -Djava.rmi.server.codebase=file:\C:\jav a\files\ -Djava.security.policy=c:/java/clienttest.policy client.ComputePi local host 45 ComputePi exception: java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is: java.io.EOFException at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source) at sun.rmi.server.UnicastRef.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn own Source) at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) at $Proxy0.executeTask(Unknown Source) at client.ComputePi.main(ComputePi.java:18) Caused by: java.io.EOFException at java.io.DataInputStream.readByte(Unknown Source) ... 6 more C: Thanks in advance Perry

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• Google friend connect - simple question about API and .net variables

  - by Morten Pedersen

  I want to store the Person.Field.ID number of a logged-in person in a .aspx .net variable so that I can use it in a VB script. I am using the sign-in gadget on my site. How do I do this?

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• heroku time zone problem

  - by Ole Morten Amundsen

  Why does Time.now yield the server local time when I have set the another time zone in my environment.rb config.time_zone = 'Copenhagen' I've put this in a view <p> Time.zone <%= Time.zone %> </p> <p> Time.now <%= Time.now %> </p> <p> Time.now.utc <%= Time.now.utc %> </p> <p> Time.zone.now <%= Time.zone.now %> </p> <p> Time.zone.today <%= Time.zone.today %> </p> rendering this result on my app at heroku Time.zone (GMT+01:00) Copenhagen Time.now Mon Apr 26 08:28:21 -0700 2010 Time.now.utc Mon Apr 26 15:28:21 UTC 2010 Time.zone.now 2010-04-26 17:28:21 +0200 Time.zone.today 2010-04-26 Time.zone.now yields the correct result. Do I have to switch from Time.now to Time.zone.now, everywhere? Seems cumbersome. I truly don't care what the local time of the server is, it's giving me loads of trouble due to extensive use of Time.now. Am I misunderstanding anything fundamental here?

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• How to avoid reallocation using the STL (C++)

  - by Tue Christensen

  This question is derived of the topic: http://stackoverflow.com/questions/2280655/vector-reserve-c I am using a datastructur of the type vector<vector<vector<double> > >. It is not possible to know the size of each of these vector (except the outer one) before items (doubles) are added. I can get an approximate size (upper bound) on the number of items in each "dimension". A solution with the shared pointers might be the way to go, but I would like to try a solution where the vector<vector<vector<double> > > simply has .reserve()'ed enough space (or in some other way has allocated enough memory). Will A.reserve(500) (assumming 500 is the size or, alternatively an upper bound on the size) be enough to hold "2D" vectors of large size, say [1000][10000]? The reason for my question is mainly because I cannot see any way of reasonably estimating the size of the interior of A at the time of .reserve(500). An example of my question: vector A; A.reserve(500+1); vector temp2; vector temp1 (666,666); for(int i=0;i<500;i++) { A.push_back(temp2); for(int j=0; j< 10000;j++) { A.back().push_back(temp1); } } Will this ensure that no reallocation is done for A? If temp2.reserve(100000) and temp1.reserve(1000) where added at creation will this ensure no reallocation at all will occur at all? In the above please disregard the fact that memory could be wasted due to conservative .reserve() calls. Thank you all in advance!

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• Can AVAudioSession do full duplex?

  - by Eric Christensen

  It would seem like it should be able to, but the following breakout test code can't do both: //play a file: NSArray *pathsArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [pathsArray objectAtIndex:0]; NSString* playFilePath=[documentsDirectory stringByAppendingPathComponent:@"testplayfile.wav"]; AVAudioPlayer *tempplayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:playFilePath] error:nil]; [tempplayer prepareToPlay]; [tempplayer play]; //and record a file: NSString* recFilePath=[documentsDirectory stringByAppendingPathComponent:@"testrecordfile.wav"]; AVAudioRecording *soundrecording = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:recFilePath] settings:nil error:nil]; [soundrecording prepareToRecord]; [soundrecording record]; This is the minimum I can think of to individually play one file and record another. And this works just fine in the simulator. I can play back a file and record at the same time. But it doesn't work on the iphone itself. If I comment out either function, the other performs fine. The playback plays fine either alone or with both, if it's first. If I comment out the playback, the record records fine. (There's additional code to stop the recording not shown here.) So each works fine, but not together. I know audioQueue has a setting to allow both, but I don't see an analogue for AVAudioSessions. Any idea if it's possible, and if so, what I need to add? Thanks!

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• GlassFish Security Realm, Active Directory and Referral

  - by Allan Lykke Christensen

  I've setup up a Security Realm in Glassfish to authenticate against an Active Directory server. The configuration of the realm is as follows: Class Name: com.sun.enterprise.security.auth.realm.ldap.LDAPRealm JAAS context: ldapRealm Directory: ldap://172.16.76.10:389/ Base DN: dc=smallbusiness,dc=local search-filter: (&(objectClass=user)(sAMAccountName=%s)) group-search-filter: (&(objectClass=group)(member=%d)) search-bind-dn: cN=Administrator,CN=Users,dc=smallbusiness,dc=local search-bind-password: abcd1234! The realm is functional and I can log-in, but when ever I log in I get the following error in the log: SEC1106: Error during LDAP search with filter [(&(objectClass=group)(member=CN=Administrator,CN=Users,dc=smallbusiness,dc=local))]. SEC1000: Caught exception. javax.naming.PartialResultException: Unprocessed Continuation Reference(s); remaining name 'dc=smallbusiness,dc=local' at com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2820) .... .... ldaplm.searcherror While searching for a solution I found that it was recommended to add java.naming.referral=follow to the properties of the realm. However, after I add this it takes 20 minutes for GlassFish to authenticate against Active Directory. I suspect it is a DNS problem on the Active Directory server. The Active Directory server is a vanilla Windows Server 2003 setup in a Virtual Machine. Any help/recommendation is highly appreciated!

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• Where to get Rhino Commons

  - by Rasmus Christensen

  Hi I'm working on an asp.net mvc project using nhibernate. At the moment I think Rhino Commons session management is the best spproach to control isession. But Where should I get Rhino Commons From? I found it located on Horn, Github, think the svn is obsolete. Please point me to a version that works.

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• How to reset ASP.NET MVC client validation mode?

  - by Morten Christiansen

  I'm having a bit of trouble with the client-side validation in the ASP.NET MVC 2 framework and hope someone can help me out. In several situations I find it useful to be able to reset the contents of a form or just a single input element and I need any validation errors to disappear. This in itself is not very hard, and the suggestion provided here works well enough: http://stackoverflow.com/questions/2798427/how-do-i-clear-mvc-client-side-validation-errors-when-a-cancel-button-is-clicked The problem is that, when triggered, client validation goes into an aggressive mode that performs validation on each key press and when an input loses focus. Is there a good way to reset this state as well?

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• I just don't get AudioFileReadPackets

  - by Eric Christensen

  I've tried to write the smallest chunk of code to narrow down a problem. It's now just a few lines and it doesn't work, which makes it pretty clear that I have a fundamental misunderstanding of how to use AudioFileReadPackets. I've read the docs and other examples online, and apparently I'm just not getting. Could you explain it to me? Here's what this block should do: I've previously opened a file. I want to read just one packet - the first one of the file - and then print it. But it crashes on the AudioFileReadPackets line: AudioFileID mAudioFile2; AudioFileOpenURL (audioFileURL, 0x01, 0, &mAudioFile2); UInt32 *audioData2 = (UInt32 *)malloc(sizeof(UInt32) * 1); AudioFileReadPackets(mAudioFile2, false, NULL, NULL, 0, (UInt32*)1, audioData2); NSLog(@"first packet:%i",audioData2[0]); (For clarity, I've stripped out all error handling.) It's the AFRP line that crashes out. (I understand that the third and fourth argument are useful, and in my "real" code, I use them, but they're not required, right? So NULL in this case should work, right?) So then what's going on? Any guidance would be much appreciated. Thanks.

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• heroku time zone problem, logging local server time

  - by Ole Morten Amundsen

  UPDATE: Ok, I didn't formulate a good Q to be answered. I still struggle with heroku being on -07:00 UTC and I at +02:200 UTC. Q: How do I get the log written in the correct Time.zone ? The 9 hours difference, heroku (us west) - norway, is distracting to work with. I get this in my production.log (using heroku logs): Processing ProductionController#create to xml (for 81.26.51.35 at 2010-04-28 23:00:12) [POST] How do I get it to write 2010-04-29 08:00:12 +02:00 GMT ? Note that I'm running at heroku and cannot set the server time myself, as one could do at your amazon EC2 servers. Below is my previous question, I'll leave it be as it holds some interesting information about time and zones. Why does Time.now yield the server local time when I have set the another time zone in my environment.rb config.time_zone = 'Copenhagen' I've put this in a view <p> Time.zone <%= Time.zone %> </p> <p> Time.now <%= Time.now %> </p> <p> Time.now.utc <%= Time.now.utc %> </p> <p> Time.zone.now <%= Time.zone.now %> </p> <p> Time.zone.today <%= Time.zone.today %> </p> rendering this result on my app at heroku Time.zone (GMT+01:00) Copenhagen Time.now Mon Apr 26 08:28:21 -0700 2010 Time.now.utc Mon Apr 26 15:28:21 UTC 2010 Time.zone.now 2010-04-26 17:28:21 +0200 Time.zone.today 2010-04-26 Time.zone.now yields the correct result. Do I have to switch from Time.now to Time.zone.now, everywhere? Seems cumbersome. I truly don't care what the local time of the server is, it's giving me loads of trouble due to extensive use of Time.now. Am I misunderstanding anything fundamental here?

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• iPhone metering problems

  - by Eric Christensen

  When I'm recording an AVAudioRecorder object, I repeat a chunk of code via an NSTimer that includes: [soundrecording updateMeters]; NSLog(@"channel 0 average:%f, peak:%f",[soundrecording averagePowerForChannel:0],[soundrecording peakPowerForChannel:0]); NSLog(@"channel 1 average:%f, peak:%f",[soundrecording averagePowerForChannel:1],[soundrecording peakPowerForChannel:1]); When I'm recording a mono file, the peak power for channel 0 is just what you'd expect, a float from -160 to 0. But average power for channel 0 is always zero. (And, of course, the values for channel 1 are both zero.) When I'm recording a stereo file, both the average and peak values for both channels are as expected. Any thoughts on why, when recording a mono file, the average value for channel 0 isn't returning correctly, even though the peak is? Thanks!

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• Using DotNetZip Library unzip file with non ASCII characters

  - by Morten Lyhr

  I'm trying to unzip a file, using DotNetZip Library. The file contains folders and files with danish characters (æøåÆØÅ). TotalCommander, 7Zip, Windows own zip all extract the files correctly, but DotNetZip Library mangles the danish characters. Ex: File_æøåÆØÅ.txt becomes File_æ¢åÆ¥Å.txt insted of aø it contains a ¢. insted of a Ø it contains a ¥. Code: using (var zipFile = ZipFile.Read(@"File_æøåÆØÅ.zip")) { zipFile.ExtractAll(@"File_æøåÆØÅ", ExtractExistingFileAction.OverwriteSilently); } I'm using the default encoding("da-DK" culture), I have tried other encodings like UTF8 etc. How can I unzip a file containing filenames with Danish characters?

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• How to add request validation errors to ModelStateDictionary in ASP.NET MVC?

  - by Morten Christiansen

  Investigating the security of a system I'm building with ASP.NET MVC 2 led me to discover the request validation feature of ASP.NET - a very neat feature, indeed. But obviously I don't just want to present the users with the Yellow Screen of Death when they enter data with HTML in, so I'm out to find a better solution. My idea is to find all the fields that have invalid data and add them to the ModelStateDictionary before invoking the action such that they automatically appear in the UI as error messages. After googling this a bit it appears that no one have implemented this before which I find puzzling since it seems so obvious. Does anyone here have a suggestion on how to do this? My own idea is to supply a custom ControllerActionInvoker to the controller, as described here, that somehow checks for this and modifies the ModelStateDictionary but I'm stuck on how to do this last bit. Just catching HttpRequestValidationException exceptions does not seem a useful approach since it does not actually contain all the information I need.

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