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• KVM network bridge and public static IP for both host and guests

  - by Javier Martinez

  I have a Debian Server with 4 public static addresses. There is a KVM guest (also Debian) installed and running. What I want is to give the guest an IP of the host, so that both machines have public IPs. IP 1: 188.165.A.B IP 2: 178.33.CCC.D IP 3: 178.33.CCC.E IP 4: 178.33.CCC.F What should I do to have connection for host and guest ? This is network conf: # ifconfig br0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:188.165.A.B Bcast:188.165.255.255 Mask:255.255.255.0 inet6 addr: fe80::ea40:f2ff:fe0a:cc28/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3618 errors:0 dropped:4 overruns:0 frame:0 TX packets:4853 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:599562 (585.5 KiB) TX bytes:1693443 (1.6 MiB) eth0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet6 addr: fe80::ea40:f2ff:fe0a:cc28/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4274 errors:0 dropped:0 overruns:0 frame:0 TX packets:4879 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:720045 (703.1 KiB) TX bytes:1715641 (1.6 MiB) Interrupt:20 Memory:fe500000-fe520000 eth0:0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.D Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 eth0:1 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.E Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 eth0:2 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.F Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:27932 errors:0 dropped:0 overruns:0 frame:0 TX packets:27932 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1820862 (1.7 MiB) TX bytes:1820862 (1.7 MiB) vnet0 Link encap:Ethernet HWaddr fe:54:00:87:40:ec inet6 addr: fe80::fc54:ff:fe87:40ec/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:18 errors:0 dropped:0 overruns:0 frame:0 TX packets:204 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1452 (1.4 KiB) TX bytes:16958 (16.5 KiB) #route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default aa.bb.cc.eu 0.0.0.0 UG 0 0 0 br0 188.165.255.0 * 255.255.255.0 U 0 0 0 br0 # brctl show bridge name bridge id STP enabled interfaces br0 8000.e840f20acc28 no eth0 vnet0 There is no firewall enabled and DNS is configured properly. What I want to achieve: | | | +----+-------------------------+-+------+ | | Host | | | | | | | | | | +------------+------+ | | eth0 | eth0:0-1 | | | 188.165.A.B | | | | | | | | | br0 vnet0 | | | +------------+------+ | | | | | | | | +------------+------+ | | | | | | | | eth0:2-+ | | | | 178.33.CCC.F | | | | | | | | Guest | | | +-------------------+ | +---------------------------------------+ Thanks you

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• KVM network bridge and public static IP for both host and guests

  - by Javier Martinez

  I have a Debian Server with 4 public static addresses. There is a KVM guest (also Debian) installed and running. What I want is to give the guest an IP of the host, so that both machines have public IPs. IP 1: 188.165.A.B IP 2: 178.33.CCC.D IP 3: 178.33.CCC.E IP 4: 178.33.CCC.F What should I do to have connection for host and guest ? This is network conf: # ifconfig br0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:188.165.A.B Bcast:188.165.255.255 Mask:255.255.255.0 inet6 addr: fe80::ea40:f2ff:fe0a:cc28/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3618 errors:0 dropped:4 overruns:0 frame:0 TX packets:4853 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:599562 (585.5 KiB) TX bytes:1693443 (1.6 MiB) eth0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet6 addr: fe80::ea40:f2ff:fe0a:cc28/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4274 errors:0 dropped:0 overruns:0 frame:0 TX packets:4879 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:720045 (703.1 KiB) TX bytes:1715641 (1.6 MiB) Interrupt:20 Memory:fe500000-fe520000 eth0:0 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.D Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 eth0:1 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.E Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 eth0:2 Link encap:Ethernet HWaddr e8:40:f2:0a:cc:28 inet addr:178.33.CCC.F Bcast:178.33.255.255 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:20 Memory:fe500000-fe520000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:27932 errors:0 dropped:0 overruns:0 frame:0 TX packets:27932 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1820862 (1.7 MiB) TX bytes:1820862 (1.7 MiB) vnet0 Link encap:Ethernet HWaddr fe:54:00:87:40:ec inet6 addr: fe80::fc54:ff:fe87:40ec/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:18 errors:0 dropped:0 overruns:0 frame:0 TX packets:204 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:1452 (1.4 KiB) TX bytes:16958 (16.5 KiB) #route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default aa.bb.cc.eu 0.0.0.0 UG 0 0 0 br0 188.165.255.0 * 255.255.255.0 U 0 0 0 br0 # brctl show bridge name bridge id STP enabled interfaces br0 8000.e840f20acc28 no eth0 vnet0 There is no firewall enabled and DNS is configured properly. What I want to achieve: | | | +----+-------------------------+-+------+ | | Host | | | | | | | | | | +------------+------+ | | eth0 | eth0:0-1 | | | 188.165.A.B | | | | | | | | | br0 vnet0 | | | +------------+------+ | | | | | | | | +------------+------+ | | | | | | | | eth0:2-+ | | | | 178.33.CCC.F | | | | | | | | Guest | | | +-------------------+ | +---------------------------------------+ Thanks you

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• Can any Palm Pre be used for development?

  - by teedyay

  We're about to start developing software for the Palm, using WebOS. Though an emulator is available for testing, I always feel more confident seeing it run on a physical device as well. I can't find anywhere on Palm's website that tells me whether I can just buy an off-the-shelf Palm Pre and run my app on it, or if I have to buy one with a particular type of contract/ have it unlocked in some way/ whatever. Does anyone know? Have you done this? (Sorry this is barely programming-related, but I couldn't think where else to ask. I'm sure someone has done this and can give me a quick yay or nay. Thanks.) Oh - I'm in the UK, if that makes any difference.

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• Milliseconds in DateTime.Now on .NET Compact Framework always zero?

  - by Marcel

  Hi all, i want to have a time stamp for logs on a Windows Mobile project. The accuracy must be in the range a hundred milliseconds at least. However my call to DateTime.Now returns a DateTime object with the Millisecond property set to zero. Also the Ticks property is rounded accordingly. How to get better time accuracy? Remember, that my code runs on on the Compact Framework, version 3.5. I use a HTC touch Pro 2 device.

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• STAThread and Process output capture in c#

  - by alex

  Hi: This is a strange problem I encountered. I have an window application written in c# to do testing. It has a MDI parent form that is hosting a few children forms. One of the forms launch test cripts by creating processes and capture the scripts output to a text box. Another form open serial port and monitoring the status of the device I am working on(like a shell). If I ran both of them together, the output of the script seems only appear in the text box after the test is done. However, If I don't open the serial port form, the output of the script is captured in real time. Does anyone knows what's causing the problem? I notice the onDataReceived even handler for serial port form has a [STAThread] header to it. Will this cause the serial port thread having higher priority than other processes? Thanks in advance.

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• Low level qemu based debugging

  - by Dacav

  I've to test some low level code on an ARM architecture. Typically experimentation is quite complicated on the real board, so I was thinking about QEMU. What I'd like to get is some kind of debugging information like printfs or gdb. I know that this is simple with linux since it implements both the device driver for the QEMU Integrator and the gdb feature, but I'm not working with Linux. Also I suspect that extracting this kind of functionality from the Linux kernel source code would be complicated. I'm searching from some simple operating system that already implements one of those features. Do you have some advice? Thanks in advance.

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• Disabling Submit Button in ASP.NET 3.5 Application with JavaScript breaks BlackBerry submission

  - by ahsteele

  The following code is being used to disable a Submit button once it has been clicked. This works great on desktop browsers and most BlackBerry mobile browsers. Submit.Attributes.Add("onclick", "javascript:this.disabled=true;" + ClientScript.GetPostBackEventReference(Submit, null)); Unfortunately, when using a BlackBerry Storm clicking the submit button causes the device to just reload the page. If I remove this code the Storm browser submits the page just fine. I need to disable the button when the browser is capable of doing so but do not want to affect browsers that are not JavaScript capable. I realize I could add the jQuery framework and only attach the event client side, but am trying to look for the simplest fix (read least intrusive) as this is a legacy application. Any suggestions?

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• UITabBarController unresponsive for touches

  - by JustSid

  So, I have this view hierarchy in my app: UIWindow UIViewController UITabBarController -> 4 UINavigationController I know that a UITabBarController is designed to be the topmost view in an app, however this isn't possible in my case. However, the problem that I have is that ~20 of the lower pixels aren't responsive for touches so that the UITabBarController doesn't trigger the tab changes correctly. This happens on an actual device (iPad and iPhone 3G). My question is, are there any obvious reasons why this could happen? I add the UITabBarController like this as subview to my UIViewController view: - (void)viewDidLoad { [super viewDidLoad]; [self.view addSubview:controller.view]; // Controller is the UITabBarController } I didn't set the UITabBarController's delegate.

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• HttpPost works in Java project, not in Android

  - by dave.c

  I've written some code for my Android device to login to a web site over https and parse some data out of the resulting pages. An HttpGet happens first to get some info needed for login, then an HttpPost to do the actual login process. The code below works great in a Java project within Eclipse which has the following Jar files on the build path: httpcore-4.1-beta2.jar, httpclient-4.1-alpha2.jar, httpmime-4.1-alpha2.jar, commons-logging-1.1.1.jar. public static MyBean gatherData(String username, String password) { MyBean myBean = new MyBean(); try { HttpResponse response = doHttpGet(URL_PAGE_LOGIN, null, null); System.out.println("Got login page"); String content = EntityUtils.toString(response.getEntity()); String token = ContentParser.getToken(content); String cookie = getCookie(response); System.out.println("Performing login"); System.out.println("token = "+token +" || cookie = "+cookie); response = doLoginPost(username,password,cookie, token); int respCode = response.getStatusLine().getStatusCode(); if (respCode != 302) { System.out.println("ERROR: not a 302 redirect!: code is \""+ respCode+"\""); if (respCode == 200) { System.out.println(getHeaders(response)); System.out.println(EntityUtils.toString(response.getEntity()).substring(0, 500)); } } else { System.out.println("Logged in OK, loading account home"); // redirect handler and rest of parse removed } }catch (Exception e) { System.out.println("ERROR in gatherdata: "+e.toString()); e.printStackTrace(); } return myBean; } private static HttpResponse doHttpGet(String url, String cookie, String referrer) { try { HttpClient client = new DefaultHttpClient(); client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); client.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8"); HttpGet httpGet = new HttpGet(url); httpGet.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); httpGet.setHeader(HEADER_USER_AGENT,HEADER_USER_AGENT_VALUE); if (referrer != null && !referrer.equals("")) httpGet.setHeader(HEADER_REFERER,referrer); if (cookie != null && !cookie.equals("")) httpGet.setHeader(HEADER_COOKIE,cookie); return client.execute(httpGet); } catch (Exception e) { e.printStackTrace(); throw new ConnectException("Failed to read content from response"); } } private static HttpResponse doLoginPost(String username, String password, String cookie, String token) throws ClientProtocolException, IOException { try { HttpClient client = new DefaultHttpClient(); client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); client.getParams().setParameter(CoreProtocolPNames.HTTP_CONTENT_CHARSET, "UTF-8"); HttpPost post = new HttpPost(URL_LOGIN_SUBMIT); post.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); post.setHeader(HEADER_USER_AGENT,HEADER_USER_AGENT_VALUE); post.setHeader(HEADER_REFERER, URL_PAGE_LOGIN); post.setHeader(HEADER_COOKIE, cookie); post.setHeader("Content-Type","application/x-www-form-urlencoded"); List<NameValuePair> formParams = new ArrayList<NameValuePair>(); formParams.add(new BasicNameValuePair("org.apache.struts.taglib.html.TOKEN", token)); formParams.add(new BasicNameValuePair("showLogin", "true")); formParams.add(new BasicNameValuePair("upgrade", "")); formParams.add(new BasicNameValuePair("username", username)); formParams.add(new BasicNameValuePair("password", password)); formParams.add(new BasicNameValuePair("submit", "Secure+Log+in")); UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams,HTTP.UTF_8); post.setEntity(entity); return client.execute(post); } catch (Exception e) { e.printStackTrace(); throw new ConnectException("ERROR in doLoginPost(): "+e.getMessage()); } } The server (which is not under my control) returns a 302 redirect when the login was successful, and 200 if it fails and re-loads the login page. When run with the above Jar files I get the 302 redirect, however if I run the exact same code from an Android project with the 1.6 Android Jar file on the build path I get the 200 response from the server. I get the same 200 response when running the code on my 2.2 device. My android application has internet permissions, and the HttpGet works fine. I'm assuming that the problem lies in the fact that HttpPost (or some other class) is different in some significant way between the Android Jar version and the newer Apache versions. I've tried adding the Apache libraries to the build path of the Android project, but due to the duplicate classes I get messages like: INFO/dalvikvm(390): DexOpt: not resolving ambiguous class 'Lorg/apache/http/impl/client/DefaultHttpClient;' in the log. I've also tried using a MultipartEntity instead of the UrlEncodedFormEntity but I get the same 200 result. So, I have a few questions: - Can I force the code running under android to use the newer Apache libraries in preference to the Android versions? - If not, does anyone have any ideas how can I alter my code so that it works with the Android Jar? - Are there any other, totally different approaches to doing an HttpPost in Android? - Any other ideas? I've read a lot of posts and code but I'm not getting anywhere. I've been stuck on this for a couple of days and I'm at a loss how to get the thing to work, so I'll try anything at this point. Thanks in advance.

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• iPhone autorotation for too many objects on screen

  - by Denis

  Hi! I have a BlahAppDelegate, BlahViewController and no nibs in my iPhone app project. Only some subclasses of UIView in addition. All this is situated in main.m. My app has 6 subclassed UIViews. Each of it contains 18 UIImageViews. I need to get autorotating work. Or custom rotating. Or something. For example it would be nice to fade the screen out when device is rotated, then move/resize views and then fade screen out. But I don't know how to automate it, without writing a resizing code for each of objects. Please help me if you can.

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• What does this WCF error mean: "Custom tool warning: Cannot import wsdl:portType"

  - by stiank81

  I created a WCF service library project in my solution, and have service references to this. I use the services from a class library, so I have references from my WPF application project in addition to the class library. Services are set up straight forward - only changed to get async service functions. Everything was working fine - until I wanted to update my service references. It failed, so I eventually rolled back and retried, but it failed even then! So - updating the service references fails without doing any changes to it. Why?! The error I get is this one: Custom tool error: Failed to generate code for the service reference 'MyServiceReference'. Please check other error and warning messages for details. The warning gives more information: Custom tool warning: Cannot import wsdl:portType Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter Error: List of referenced types contains more than one type with data contract name 'Patient' in namespace 'http://schemas.datacontract.org/2004/07/MyApp.Model'. Need to exclude all but one of the following types. Only matching types can be valid references: "MyApp.Dashboard.MyServiceReference.Patient, Medski.Dashboard, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" (matching) "MyApp.Model.Patient, MyApp.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" (matching) XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='ISomeService'] There are two similar warnings too saying: Custom tool warning: Cannot import wsdl:binding Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on. XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='ISomeService'] XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='WSHttpBinding_ISomeService'] And the same for: Custom tool warning: Cannot import wsdl:port .. I find this all confusing.. I don't have a Patient class on the client side Dashboard except the one I got through the service reference. So what does it mean? And why does it suddenly show? Remember: I didn't even change anything! Now, the solution to this was found here, but without an explanation to what this means. So; in the "Configure service reference" for the service I uncheck the "Reuse types in the referenced assemblies" checkbox. Rebuilding now it all works fine without problems. But what did I really change? Will this make an impact on my application? And when should one uncheck this? I do want to reuse the types I've set up DataContract on, but no more. Will I still get access to those without this checked?

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• Detect block size for quota in Linux

  - by Chen Levy

  The limit placed on disk quota in Linux is counted in blocks. However, I found no reliable way to determine the block size. Tutorials I found refer to block size as 512 bytes, and sometimes as 1024 bytes. I got confused reading a post on LinuxForum.org for what a block size really means. So I tried to find that meaning in the context of quota. I found a "Determine the block size on hard disk filesystem for disk quota" tip on NixCraft, that suggested the command: dumpe2fs /dev/sdXN | grep -i 'Block size' or blockdev --getbsz /dev/sdXN But on my system those commands returned 4096, and when I checked the real quota block size on the same system, I got a block size of 1024 bytes. Is there a scriptable way to determine the quota block size on a device, short of creating a known sized file, and checking it's quota usage?

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• Augmented reality problem with multiple webs ervice.

  - by sujitjitu

  Hi, i am working on an Augmented Reality application.I am using android platform. i am retrieving data by using Handler concept from web service to show it above the camera preview. But my problem is that when i am making one web service call it is working fine but with multiple web service call the camera is getting crashed.It is working fine in the emulator but not working in the real device. I don't know what is the problem. I have tried everything not got the solution yet. Please help me its urgent. Thanks in advance..........

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• Matrix inversion in OpenCL

  - by buchtak

  Hi, I am trying to accelerate some computations using OpenCL and part of the algorithm consists of inverting a matrix. Is there any open-source library or freely available code to compute lu factorization (lapack dgetrf and dgetri) of matrix or general inversion written in OpenCL or CUDA? The matrix is real and square but doesn't have any other special properties besides that. So far, I've managed to find only basic blas matrix-vector operations implementations on gpu. The matrix is rather small, only about 60-100 rows and cols, so it could be computed faster on cpu, but it's used kinda in the middle of the algorithm, so I would have to transfer it to host, calculate the inverse, and then transfer the result back on the device where it's then used in much larger computations.

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• 2 fundamental questions for the Androgurus ...Can someone guide me

  - by Saul Carpenter

  I have'nt plunged into Android Development as yet though Java Classes C++ all that is not new to me. Here are the questions folks. Appreciated any help on these : - If I need to develop test and deploy Android Apps do I NEED AN ANDROID Hardware device or is there a software Android Simulator like VMWARE or Virtual PC , where I can emulate the results.If there is such can you point me more info I have a Netbook ( the Chinese Ipad Clone ) running Android that has only Wi-Fi for the present. Is it possible to add the following features via the spare USB Port --- a USB Based 56K Modem : Are there Android platform H/W Drivers. --- a USB based RJ45 ( Ethernet LAN LandLine connection ) Adapter :Are there Android platform H/W Drivers. Please advise Thanks Saul

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• Developing Android applications with Visual Studio 2008

  - by Goz

  Hi all, I've recently obtained an HTC Desire and I'm interested in porting my 3D engine to the device. I have a slight annoyance however. I'd love to be able to do development under Visual Studio 2008. Am I to assume I'm going to need to re-process my SLN files to do GCC builds? Its not a vast issue as I already have an application that processes SLN and VCProj files through GCC and then links them together at the other end. I'll just need to set up the right libraries with it. Are there any other gotchas I need to think about? Or, indeed, is there an easier way? Any info would be much appreciated! Cheers :)

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• Error in java code.

  - by user243680

  I am getting the following error when i try to use a blue tooth dongle to transfer a video file from pc to mobile phone. does anyone know run: BlueCove log redirected to log4j log4j:WARN No appenders could be found for logger (com.intel.bluetooth). log4j:WARN Please initialize the log4j system properly. BlueCove version 2.1.0 on bluesoleil java.io.IOException: Device not discovered BlueCove stack shutdown completed at com.intel.bluetooth.BluetoothStackBlueSoleil.connectionRfOpenClientConnection(BluetoothStackBlueSoleil.java:361) at com.intel.bluetooth.BluetoothRFCommClientConnection.<init>(BluetoothRFCommClientConnection.java:37) at com.intel.bluetooth.MicroeditionConnector.openImpl(MicroeditionConnector.java:379) at com.intel.bluetooth.MicroeditionConnector.open(MicroeditionConnector.java:162) at javax.microedition.io.Connector.open(Connector.java:83) at de.avetana.obexsolo.OBEXConnector.open(OBEXConnector.java:103) at OBEXTest.main(OBEXTest.java:23)

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• How do I set up one time password authentication?

  - by scraimer

  I have a home network which I access remotely quite a bit. But I'm worried about security. While I do have strong passwords, I'm worried that someone will acquire my password and use it to gain access. I heard about "one time passwords" and even got to use them at my university. We'd just press a button on a device (or run an application on a phone) and get a generated password that would work for the next minute or so. How can I set something like that up? Are there systems that are easy to use and set up? Has anyone played around with an SDK of one of these systems? Where can I get a starter kit from? EDIT: I'm running a mixed Linux and Windows network, and I'm vaguely hoping to use this for authenticating on both operating systems. (No, there's no domain controller, but I can set one up using Samba, I suppose.)

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• plot negative and positive values in same Y-axis in coreplot ios

  - by user3774439

  I have an issue in converting axis labels to int or float values. This is my Y-Axis. It contains temperature values contains -50, 33, 117, 200. CPTXYAxis *y = axisSet.yAxis; y.labelingPolicy = CPTAxisLabelingPolicyNone; y.orthogonalCoordinateDecimal = CPTDecimalFromUnsignedInteger(1); y.majorGridLineStyle = majorGridLineStyle; y.minorGridLineStyle = minorGridLineStyle; y.minorTicksPerInterval = 0.0; y.labelOffset = 0.0; y.title = @""; y.titleOffset = 0.0; NSMutableSet *yLabels = [NSMutableSet setWithCapacity:4]; NSMutableSet *yLocations = [NSMutableSet setWithCapacity:4]; NSArray *yAxisLabels = [NSArray arrayWithObjects:@"-50", @"33", @"117", @"200", nil]; NSNumberFormatter * nFormatter = [[NSNumberFormatter alloc] init]; [nFormatter setNumberStyle:NSNumberFormatterDecimalStyle]; for ( NSUInteger i = 0; i < [yAxisLabels count]; i++ ) { NSLog(@"%@",[yAxisLabels objectAtIndex:i]); CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%@",[yAxisLabels objectAtIndex:i]] textStyle:axisTextStyle]; label.tickLocation = CPTDecimalFromUnsignedInteger(i); label.offset = y.majorTickLength; if (label) { [yLabels addObject:label]; [yLocations addObject:[NSDecimalNumber numberWithUnsignedInteger:i]]; } label = nil; } y.axisLabels = yLabels; y.majorTickLocations = yLocations; y.labelFormatter = nFormatter; Now, my issue is.. I am getting data from the BLE device as temperature values as strings like 50, 60.3, etc... Now I want plot these values from BLE device with the Y-axis values. i am unable convert these Y-axis labels to temperature values. Could you please help me guys...I have tried many time still no luck. Please help me UPDATE:: This is the way I am creating scatterplot: -(void)createScatterPlotsWithIdentifier:(NSString *)identifier color:(CPTColor *)color forGraph:(CPTGraph *)graph forXYPlotSpace:(CPTXYPlotSpace *)plotSpace{ CPTScatterPlot *scatterPlot = [[CPTScatterPlot alloc] init]; scatterPlot.dataSource = self; scatterPlot.identifier = identifier; //Plot a graph with in the plotspace [plotSpace scaleToFitPlots:[NSArray arrayWithObjects:scatterPlot, nil]]; plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromUnsignedInteger(0) length:CPTDecimalFromUnsignedInteger(30)]; plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromUnsignedInteger(-50) length:CPTDecimalFromUnsignedInteger(250)]; CPTMutablePlotRange *xRange = [[self getCoreplotSpace].xRange mutableCopy]; [xRange expandRangeByFactor:CPTDecimalFromCGFloat(-1)]; [self getCoreplotSpace].xRange = xRange; CPTMutableLineStyle *scatterLineStyle = [scatterPlot.dataLineStyle mutableCopy]; scatterLineStyle.lineWidth = 1; scatterLineStyle.lineColor = color; scatterPlot.dataLineStyle = scatterLineStyle; CPTMutableLineStyle *scatterSymbolLineStyle = [CPTMutableLineStyle lineStyle]; scatterSymbolLineStyle.lineColor = color; CPTPlotSymbol *scatterSymbol = [CPTPlotSymbol ellipsePlotSymbol]; scatterSymbol.fill = [CPTFill fillWithColor:color]; scatterSymbol.lineStyle = scatterSymbolLineStyle; scatterSymbol.size = CGSizeMake(2.0f, 2.0f); scatterPlot.plotSymbol = scatterSymbol; [graph addPlot:scatterPlot toPlotSpace:plotSpace]; } Configuring the Y-axis like this: NSMutableSet *yLabels = [NSMutableSet setWithCapacity:4]; NSMutableSet *yLocations = [NSMutableSet setWithCapacity:4]; NSArray *yAxisLabels = [NSArray arrayWithObjects:@"-50", @"33", @"117", @"200", nil]; NSArray *customTickLocations = [NSArray arrayWithObjects:[NSDecimalNumber numberWithUnsignedInt:-50], [NSDecimalNumber numberWithInt:33], [NSDecimalNumber numberWithInt:117], [NSDecimalNumber numberWithInt:200],nil]; for ( NSUInteger i = 0; i < [yAxisLabels count]; i++ ) { NSLog(@"%@",[yAxisLabels objectAtIndex:i]); CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%@",[yAxisLabels objectAtIndex:i]] textStyle:axisTextStyle]; label.tickLocation = CPTDecimalFromInteger([[customTickLocations objectAtIndex:i] integerValue]); label.offset = y.majorTickLength; if (label) { [yLabels addObject:label]; [yLocations addObject:[NSString stringWithFormat:@"%d",[[customTickLocations objectAtIndex:i] integerValue]]]; } label = nil; } y.axisLabels = yLabels; y.majorTickLocations = [NSSet setWithArray:customTickLocations]; Eric, I set the range as you said in CreateSctterPlot method. But In horizontal line on graph are not coming. Could you please help me what I am wrong. Thanks

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• Parameter passing become pointer for integer

  - by Kangkan

  I am working on a c/Linux app for a device. I consume a web service (in WCF/c#) and use gSOAP for the same. The issue is that the parameters in the service methods become pointers for simple data types like int, short etc also. I initially used the same service exposed as ASMX web service and the client proxy generated using gSOAP created methods with parameters passed as values. But once the service has been upgraded to WCF, all the parameters became pointers. Can somebody help?

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• Subview position issue after UIOrientation (rotation) change

  - by asadqamber

  I have a viewController and have added a subview in it programatically. secondView.autoresizingMask = UIViewAutoresizingFlexibleWidth; [self.view addSubview:secondView]; I guess when the device rotates, my mainViewController knows that orientation changed, but the subview (secondView) inside the mainViewController does not know this, so I change its frame to landscape size in willRotateToInterfaceOrientation. secondView.frame = CGRectMake(0, 0, 480 , 260); This does not set in the correct position, it's 11 px below the NavigationBar. Why does it start from 11 px below the navigation bar? The navigation bar shrinks when we move from portrait to landscape mode and its because of this that my subview is 11px below.

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• CFNetwork / NSURLConnection leak

  - by JK

  Running instruments on the device, I intermittently incur a memory leak of exactly 3.5 KB in CFNetwork, the responsible frame being "HostLookup_Master::HostLookup...." I have read a number of questions re this issue and have separately tried the following to fix the leak: Included the following in applicationDidFinishLaunching: NSURLCache *sharedCache = [[NSURLCache alloc] initWithMemoryCapacity:0 diskCapacity:0 diskPath:nil]; [NSURLCache setSharedURLCache:sharedCache]; [sharedCache release]; Specified in the urlrequest not to load from the local cache. None of the above worked. My class that instantiates the connections does not leak as its instances are released when data has been downloaded. I have verified this by confirming the the living objects of the class is 0 using Instruments. Any advice on addressing this leak would be greatly appreciated.

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• Problems running Java SWT application. Is this something to do with 64 vs 32-bit libraries?

  - by ?????

  I'm getting started with SWT Exception in thread "main" java.lang.UnsatisfiedLinkError: no swt-cocoa-3557 or swt-cocoa in swt.library.path, java.library.path or the jar file at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.C.<clinit>(Unknown Source) at org.eclipse.swt.internal.cocoa.NSThread.isMainThread(Unknown Source) at org.eclipse.swt.graphics.Device.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.<init>(Unknown Source) at org.eclipse.swt.widgets.Display.getDefault(Unknown Source) at com.astrobetty.getotagdesktop.MainUIWindow.main(MainUIWindow.java:110) I've carefully followed the directions here http://www.eclipse.org/swt/eclipse.php I can see libswt-awt-cocoa-3557.jnilib, libswt-cocoa-3557.jnilib, libswt-pi-cocoa-3557.jnilib clearly listed under "Referenced Libraries" in my Eclipse package explorer. Presumably, that should make them available on the classpath when I select the java module that contains "main" and do a "run as" application. What's the problem? I suspect it may be related to 64-bit vs 32-bit VMs....

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• In database table design, how does "Virtual Goods" affect table design -- should we create an instan

  - by Jian Lin

  When we design a database table for a DVD rental company, we actually have a movie, which is an abstract idea, and a physical DVD, so for each rental, we have a many-to-many table with fields such as: TransactionID UserID DvdID RentedDate RentalDuration AmountPaid but what about with virtual goods? For example, if we let a user rent a movie online for 3 days, we don't actually have a DVD, so we may have a table: TransactionID UserID MovieID RentedDate RentalDuration AmountPaid should we create a record for each instance of "virtual good"? For example, what if this virtual good (the movie) can be authorized to be watched on 3 devices (with 3 device IDs), then should we then create a virtual good record in the VirtualGoods table, each with a VirtualGoodID and then another table that has VirtualGoodID DeviceID to match up the movie with the DeviceIDs? We can also just use the TransactionID as the VirtualGoodID. Are there circumstances where we may want to create a record to record this "virtual good" in a VirtualGoods table?

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• How can I pre-authorize authopen?

  - by Georg

  I'm using authopen inside one of my programs to modify files owned by root. As can be seen in the screenshot below authopen asks for a admin password. What I'd like to achieve is that the dialog shows my app's name and then passes the authorization to authopen. Code Launching authopen which returns an authorized file descriptor. int pipe[2]; socketpair(AF_UNIX, SOCK_STREAM, 0, pipe); if (fork() == 0) { // child // close parent's pipe close(pipe[0]); dup2(pipe[1], STDOUT_FILENO); const char *authopenPath = "/usr/libexec/authopen"; execl(authopenPath, authopenPath, "-stdoutpipe", [self.device.devicePath fileSystemRepresentation], NULL); NSLog(@"Fatal error, quitting."); exit(-1); } // parent // close childs's pipe close(pipe[1]); // get file descriptor through sockets I'd really like not to use AuthorizationExecuteWithPrivileges because then I'd have to get more rights than I want to.

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