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  • sqlite3 permission denied android

    - by Sephy
    Hi, I'm trying to access the database of the application I'm developping directly on my Nexus, but I get a "permission denied" when I tried to execute the "sqlite3" command. I also tried to start the adb in root mod, but again, permission denied on the device... I guess I will have to do that with the emulator but I have a lot of data to load and it would have been 10 times faster with the phone on Wifi than the emulator... Unless someone has any idea? thanks

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  • JavaScript: Alternative to JQuery's (dual) Slider control?

    - by GregJohn
    I am using the JQuery Slider control for use as a double sided slider (dual slider). It's a great UI control but I'm looking for an alternative that isn't so "fat". Right now, just for me to use the Slider control, I have to include: JQuery core JQuery UI core JQuery Slider plugin When I both minimize using Google's awesome Closure (minimizer) and GZIP the JavaScript, I'm still at around 29kb. Question: Do any comparable (dual) Slider control exist that isn't such a large download?

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  • PHP Curl and Curl

    - by mithunmo
    Hi , I am able to send a get request using PHP Curl . But the same thing when i try from command line in Linux (/usr/bin/curl ) I am unable to do so. Please find below my PHP curl that is working $url = "http://172.20.22.26"; $headers = array("Host: 172.20.22.26", "User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1", "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", "Accept-Language: en-us,en;q=0.5", "Accept-Encoding: gzip,deflate", "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7", "Keep-Alive: 300", "Connection: keep-alive", "Authorization: Basic bWl0aHVuOm1pdGh1bg==" ); $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,'http://172.20.22.26'); curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); // RETURN THE CONTENTS OF THE CALL curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,5); curl_setopt($ch,CURLOPT_AUTOREFERER,TRUE); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); $store = curl_exec($ch); ?> But the similar thing when I try to give in command line ( not using php ) it does not work . I get an error "curl: (18) transfer closed with outstanding read data remaining" and the GET request is not complete Please find below the command I am using curl -u mithun:mithun -H "Host: 172.20.22.29,Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,Accept-Language:en-us,en;q=0.5,Accept-Encoding:gzip,deflate,Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7,Keep-Alive: 300,connection: keep-alive,Authorization: Basic bWl0aHVuOm1pdGh1bg==" http://172.20.22.29 The output i get curl: (18) transfer closed with outstanding read data remaining <frameset frameborder="0" framespacing="0" border="0" cols="220,*"><frameset frameborder="0" framespacing="0" border="0" rows="68,89%"><frame src="top.htm" name="top" scrolling=no noresize target=top marginwidth=2 marginheight=2><frame src="View.htm" name="left" target=left marginheight=1 scrolling=auto noresize marginwidth=5></frameset><frameset frameborder="0" framespacing="0" border="0" rows="68,*"><frame src="top2.htm" name="top2" target=top2 scrolling=no><frame src="sys_status.htm" name="right" target="_self"></frameset></frameset>[qateam@bras-1-cwmp08 usr]$

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  • [Java] RSA BadPaddingException : data must start with zero

    - by Robin Monjo
    Hello everyone. I try to implement an RSA algorithm in a Java program. I am facing the "BadPaddingException : data must start with zero". Here are the methods used to encrypt and decrypt my data : public byte[] encrypt(byte[] input) throws Exception { Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");// cipher.init(Cipher.ENCRYPT_MODE, this.publicKey); return cipher.doFinal(input); } public byte[] decrypt(byte[] input) throws Exception { Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");/// cipher.init(Cipher.DECRYPT_MODE, this.privateKey); return cipher.doFinal(input); } privateKey and publicKey attributes are read from files this way : public PrivateKey readPrivKeyFromFile(String keyFileName) throws IOException { PrivateKey key = null; try { FileInputStream fin = new FileInputStream(keyFileName); ObjectInputStream ois = new ObjectInputStream(fin); BigInteger m = (BigInteger) ois.readObject(); BigInteger e = (BigInteger) ois.readObject(); RSAPrivateKeySpec keySpec = new RSAPrivateKeySpec(m, e); KeyFactory fact = KeyFactory.getInstance("RSA"); key = fact.generatePrivate(keySpec); ois.close(); } catch (Exception e) { e.printStackTrace(); } return key; } Private key and Public key are created this way : public void Initialize() throws Exception { KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA"); keygen.initialize(2048); keyPair = keygen.generateKeyPair(); KeyFactory fact = KeyFactory.getInstance("RSA"); RSAPublicKeySpec pub = fact.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class); RSAPrivateKeySpec priv = fact.getKeySpec(keyPair.getPrivate(), RSAPrivateKeySpec.class); saveToFile("public.key", pub.getModulus(), pub.getPublicExponent()); saveToFile("private.key", priv.getModulus(), priv.getPrivateExponent()); } and then saved in files : public void saveToFile(String fileName, BigInteger mod, BigInteger exp) throws IOException { FileOutputStream f = new FileOutputStream(fileName); ObjectOutputStream oos = new ObjectOutputStream(f); oos.writeObject(mod); oos.writeObject(exp); oos.close(); } I can't figured out how the problem come from. Any help would be appreciate ! Thanks in advance.

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  • firefox, jQuery ajax calls firing twice and never triggering success or error functions

    - by Adrian Adkison
    Hi, I am developing with the .NET framework, using jQuery 1.4.2 client side. When developing in Firefox version 3.6, every so often an one of the many ajax calls I make on the page will fire twice, the second will return successfully but will not trigger the success handler of the ajax call and the first never returns anything. So basically the data is all sent to the server and response is sent down but nothing happens with the response. Here is an example of the call I am making. It happens to any of the ajax calls, so there is not one particular that is causing the problem: $.ajax({ type:"POST", contentType : "application/json; charset=utf-8", data:"{}", dataType:"json", success:function(){ alert('success'); }, error:function(){ alert('error'); }, url:'/services.aspx/somemethod' }); }) From firebug, here are the headers of the first call which in firebug shows as never completely responding, meaning i see no response code and the loader gif in the firebug never goes away. Note:In firebug it usually says Response Header but for the first call this space is blank Server ASP.NET Development Server/9.0.0.0 X-AspNet-Version 2.0.50727 Content-Type application/json; charset=utf-8 Connection Close Request Headers Host mydomain.com User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401Firefox/3.6.3 ( .NET CLR 3.5.30729) Accept application/json, text/javascript, */* Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Content-Type application/json; charset=utf-8 X-Requested-With XMLHttpRequest Referer http://mydomain.com/mypage.aspx Here is the header from the second request which just appear to complete in firebug (i.e response is 200): Response Header Server ASP.NET Development Server/9.0.0.0 X-AspNet-Version 2.0.50727 Content-Type application/json; charset=utf-8 Connection Close Request Headers Host mydomain.com User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729) Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Content-Type application/json; charset=utf-8 Referer http://mydomain.com/mypage.aspx To summarize my question, why are two requests being made and why are neither of them triggering a success or error handler in the ajax call. I have seen this article about firefox 3.5+ and preflighted requests https://developer.mozilla.org/En/HTTP_access_control#Preflighted_requests In the article is says if a "POST" is made with any other content type than "application/x-www-form-urlencoded, multipart/form-data, or text/plain" than the request is pre-flighted. If this is the case, this should happen to all of my calls. Thanks

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  • Problem with Twitter basic authentication using AJAX

    - by jelford
    I'm developing a javascript App that needs, as part of its functionality, for users to be able to update their Twitter status. The App is designed to work on mobiles, and as such I don't really want to be sending users all the way over to the Twitter site to sign in; they should just be able to pass their credentials to the app, and I'll handle all the signin. So I'm trying to use the Basic Auth with the restful API. My code looks like: function postTweet(input){ $.ajax( { type: "POST", url: "http://twitter.com/statuses/update.json", data: {status: input}, dataType: "json", error: function() { alert("Some error occured"); }, success: function() { alert("Success!"); }, beforeSend: function(request) { request.setRequestHeader("Authorization", "Basic BASE64OFMYCREDENTIALS");} } ) ; } So, as far as I'm aware, this should perform the authentication from the XMLHttpRequest header, and then post the status. However, whenever I call this code, I get a "401 Unauthorized" error from Twitter. Below are the request & response headers from firebug: Request: OPTIONS /statuses/update.json HTTP/1.1 Host: twitter.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2) Gecko/20100115 Firefox/3.6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-gb,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Origin: null Access-Control-Request-Method: POST Access-Control-Request-Headers: authorization Response: HTTP/1.1 401 Unauthorized Date: Sat, 13 Mar 2010 11:08:58 GMT Server: hi Status: 401 Unauthorized WWW-Authenticate: Basic realm="Twitter API" X-Runtime: 0.00204 Content-Type: application/json; charset=utf-8 Cache-Control: no-cache, max-age=300 Set-Cookie: guest_id=1268478538488; path=/ _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCPlyNlcnAToHaWQiJWUyN2YzYjc3OTk2NGQ3%250ANzJkYTA4MjYzOWJmYTQyYmUyIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--d687808459872da0aa6a89cab35fd347300b4d07; domain=.twitter.com; path=/ Expires: Sat, 13 Mar 2010 11:13:58 GMT Vary: Accept-Encoding Content-Encoding: gzip Content-Length: 88 Connection: close Any help with this would be much appreciated, Thanks, jelford ps. I should mention I'm using JQuery, incase it's not clear.

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  • Problem with Google App Engine Appstats

    - by Taylor L
    I'm having an issue getting Appstats to work correctly. Using /appstats or /appstats/stats ends up in an infinite loop that keeps redirecting back to /appstats/stats. This results in a 404 error saying the page isn't redirecting properly. Any idea what the issue is? Here are the relevant lines in my appengine-web.xml. I've tried using both /appstats/stats and /appstats and they both have the same issue. <admin-console> <page name="Appstats" url="/appstats/stats" /> </admin-console> Below are the http headers showing the infinite redirect loop: http://mysite.appspot.com/appstats/stats GET /appstats/stats HTTP/1.1 Host: mysite.appspot.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: 1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/ *;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Cookie: USER_LOCALE=en_US; JSESSIONID=POTIUPPpEmjHZoaNDWOSTA; ACSID=AJKiYcHiwT8jH7e01V9O5iFu3kpBhDd3k3oBwwxylv5u0DbJ- utvdpsgdb4Xim2WXwobkJmgTGGljvuh94_yVQ__- VPnBsTtUAhRjSyZ2Lv3G7oUHAxTsCWHJIMChGT3- XUyUNx8wxwvJisL_RTXH8Hc4TTLh_rVHm2k8gk8kgdbVZXexSV0K- a3coELTecWIBolt0qLd5L-5vALm382KsqbHorPXqoZMPTvR_06g_mR1cbmF2Ihnk6YhP7no58BNpESM9HvFyKNKXODo39hF4oaZCcW0Q9TBqUMgsrBqlcIh3- VvC7qvH0n_nAtrLTBbK_swnOFvCDcaf3whT9ty0CJ0VRNuNqIPOLHIeQAMgwXUNMr89P64EsgmuyONHR67glCQXEPOGXIaT1vcBJFwFoeNUqjdp824fHvoVhaL7Xlav- LTIFuM3f_ymHLmibk57PRuXUYEaAG HTTP/1.1 302 Found Location: http://mysite.appspot.com/appstats/stats X-AppEngine-Estimated-CPM-US-Dollars: $0.645553 X-AppEngine-Resource-Usage: ms=18965 cpu_ms=27884 api_cpu_ms=0 Set-Cookie: ACSID=AJKiYcF_YA7PB18b3T5OO7vEMo31f1hFhO8xKqFRiBUGrCr4YABAAyugZXcDfKMOM- r0FiK8xlOPfQWx3tOWIJ6ueOqK89X8M9YfHIs8WKUcSs6PwNZSKV0HKxvbqeWxfZI_cpo2YoS73s_RPlyEvjaYLOf6iXPpWeYyKTAbSqPOEBnVnTk3oso6ur66CIj3FnN8vsHfbanqY4sbaRsNj9pLjWZco0quYLOK1fd4wRZx_oAvk3jOlfAj7BZ7p9L1bO8oVCMpVn19cwT6zvO2-9RSjfiOPAacw7Cg0MT30r7Fr7SCj7VcSPAye4lc7tb9KL9ztZEk0xbEX-9vC6vHM_VfPJ54Kb_FycxE6lACsKTE4hj0bOa2-2quaOP0NSxfoH9ozLlQQCsGhpWBnlu__W06D0GqDqxcDUu2HocYqWuLi91aoa- aRTkqB_qo4aAa3OvHeKoFgwrS; expires=Mon, 12-Apr-2010 19:41:49 GMT; path=/ Date: Sun, 11 Apr 2010 19:42:08 GMT Pragma: no-cache Expires: Fri, 01 Jan 1990 00:00:00 GMT Cache-Control: no-cache, must-revalidate Content-Type: text/html Server: Google Frontend Content-Length: 0 ---------------------------------------------------------- http://mysite.appspot.com/appstats/stats GET /appstats/stats HTTP/1.1 Host: mysite.appspot.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: 1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729) Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/ *;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Cookie: USER_LOCALE=en_US; JSESSIONID=POTIUPPpEmjHZoaNDWOSTA; ACSID=AJKiYcF_YA7PB18b3T5OO7vEMo31f1hFhO8xKqFRiBUGrCr4YABAAyugZXcDfKMOM- r0FiK8xlOPfQWx3tOWIJ6ueOqK89X8M9YfHIs8WKUcSs6PwNZSKV0HKxvbqeWxfZI_cpo2YoS73s_RPlyEvjaYLOf6iXPpWeYyKTAbSqPOEBnVnTk3oso6ur66CIj3FnN8vsHfbanqY4sbaRsNj9pLjWZco0quYLOK1fd4wRZx_oAvk3jOlfAj7BZ7p9L1bO8oVCMpVn19cwT6zvO2-9RSjfiOPAacw7Cg0MT30r7Fr7SCj7VcSPAye4lc7tb9KL9ztZEk0xbEX-9vC6vHM_VfPJ54Kb_FycxE6lACsKTE4hj0bOa2-2quaOP0NSxfoH9ozLlQQCsGhpWBnlu__W06D0GqDqxcDUu2HocYqWuLi91aoa- aRTkqB_qo4aAa3OvHeKoFgwrS HTTP/1.1 302 Found Location: http://mysite.appspot.com/appstats/stats X-AppEngine-Estimated-CPM-US-Dollars: $0.002243 X-AppEngine-Resource-Usage: ms=64 cpu_ms=93 api_cpu_ms=0 Date: Sun, 11 Apr 2010 19:42:08 GMT Content-Type: text/html Server: Google Frontend Content-Length: 0

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  • how does linear probing handle this?

    - by Weadadada Awda
    • the hash function: h(x) = | 2x + 5 | mod M • a bucket array of capacity N • a set of objects with keys: 12, 44, 13, 88, 23, 94, 11, 39, 20, 16, 5 (to input from left to right) 4.a [5 pts] Write the hash table where M=N=11 and collisions are handled using linear probing. So I got up to here x x x x x 44 88 12 23 13 94 but the next variable should go after the 94 now, (the 11) but does it start from the beggining or what? thx

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  • Resultant of a polynomial with x^n–1

    - by devin.omalley
    Resultant of a polynomial with x^n–1 (mod p) I am implementing the NTRUSign algorithm as described in http://grouper.ieee.org/groups/1363/lattPK/submissions/EESS1v2.pdf , section 2.2.7.1 which involves computing the resultant of a polynomial. I keep getting a zero vector for the resultant which is obviously incorrect. private static CompResResult compResMod(IntegerPolynomial f, int p) { int N = f.coeffs.length; IntegerPolynomial a = new IntegerPolynomial(N); a.coeffs[0] = -1; a.coeffs[N-1] = 1; IntegerPolynomial b = new IntegerPolynomial(f.coeffs); IntegerPolynomial v1 = new IntegerPolynomial(N); IntegerPolynomial v2 = new IntegerPolynomial(N); v2.coeffs[0] = 1; int da = a.degree(); int db = b.degree(); int ta = da; int c = 0; int r = 1; while (db > 0) { c = invert(b.coeffs[db], p); c = (c * a.coeffs[da]) % p; IntegerPolynomial cb = b.clone(); cb.mult(c); cb.shift(da - db); a.sub(cb, p); IntegerPolynomial v2c = v2.clone(); v2c.mult(c); v2c.shift(da - db); v1.sub(v2c, p); if (a.degree() < db) { r *= (int)Math.pow(b.coeffs[db], ta-a.degree()); r %= p; if (ta%2==1 && db%2==1) r = (-r) % p; IntegerPolynomial temp = a; a = b; b = temp; temp = v1; v1 = v2; v2 = temp; ta = db; } da = a.degree(); db = b.degree(); } r *= (int)Math.pow(b.coeffs[0], da); r %= p; c = invert(b.coeffs[0], p); v2.mult(c); v2.mult(r); v2.mod(p); return new CompResResult(v2, r); } There is pseudocode in http://www.crypto.rub.de/imperia/md/content/texte/theses/da_driessen.pdf which looks very similar. Why is my code not working? Are there any intermediate results I can check? I am not posting the IntegerPolynomial code because it isn't too interesting and I have unit tests for it that pass. CompResResult is just a simple "Java struct".

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  • Using memorystream and DotNetZip in MVC gives "Cannot access a closed Stream"

    - by Frode Lillerud
    I'm trying to create a zipfile in a MVC method using the DotNetZip components. Here is my code: public FileResult DownloadImagefilesAsZip() { using (var memoryStream = new MemoryStream()) { using (var zip = new ZipFile()) { zip.AddDirectory(Server.MapPath("/Images/")); zip.Save(memoryStream); return File(memoryStream, "gzip", "images.zip"); } } } When I run it I get a "Cannot access a closed Stream" error, and I'm not sure why.

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  • jQuery .ajax call to bit.ly returns results in IE but not FF or Chrome

    - by Ian Quigley
    I am trying to call to the bit.ly URL shortening service using jQuery with an .ajax call. <html><head> <script type="text/javascript" src="http://www.twipler.com/settings/scripts/jquery.1.4.min.js"></script> <script type="text/javascript"> jQuery.fn.shorten = function(url) { var resultUrl = url; $.ajax( { url: "http://api.bit.ly/shorten?version=2.0.1&login=twipler&apiKey=R_4e618e42fadbb802cf95c6c2dbab3763&longUrl=" + url, async: false, dataType: 'json', data: "", type: "GET", success: function (json) { resultUrl = json.results[url].shortUrl; } }); return resultUrl; } ; </script></head><body> <a href="#" onclick="alert($().shorten('http://amiconnectedtotheinternet.com'));"> Shorten</a> </body> </html> This works in IE8 but does not work in FireFox (3.5.9) nor in Chrome. In both cases 'json' is null. Headers in IE8 GET http://api.bit.ly/shorten?ver..[SNIP]..dtotheinternet.com HTTP/1.1 Accept: application/json, text/javascript, */* Accept-Language: en-US Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; Media Center PC 6.0; InfoPath.2; .NET CLR 1.1.4322; .NET CLR 3.5.30729; .NET CLR 3.0.30729) Host: api.bit.ly Connection: Keep-Alive Headers in Chrome GET http://api.bit.ly/shorten?versio..[SNIP]..nectedtotheinternet.com HTTP/1.1 Host: api.bit.ly Connection: keep-alive User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1045 Safari/532.5 Origin: file:// Accept: application/json, text/javascript, */* Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 So the only obvious difference is that Chrome is sending "Origin: file://" and I've no idea how to stop it doing that.

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  • Simple caesar cipher in java

    - by Max Canlas
    Hey I'm making a simple caesar cipher in Java using the formula [x- (x+shift-1) mod 127 + 1] I want to have my encrypted text to have the ASCII characters except the control characters(i.e from 32-127). How can I avoid the control characters from 0-31 applying in the encrypted text. Thank you.

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  • WCF timeout exception detailed investigation

    - by Jason Kealey
    We have an application that has a WCF service (*.svc) running on IIS7 and various clients querying the service. The server is running Win 2008 Server. The clients are running either Windows 2008 Server or Windows 2003 server. I am getting the following exception, which I have seen can in fact be related to a large number of potential WCF issues. System.TimeoutException: The request channel timed out while waiting for a reply after 00:00:59.9320000. Increase the timeout value passed to the call to Request or increase the SendTimeout value on the Binding. The time allotted to this operation may have been a portion of a longer timeout. ---> System.TimeoutException: The HTTP request to 'http://www.domain.com/WebServices/myservice.svc/gzip' has exceeded the allotted timeout of 00:01:00. The time allotted to this operation may have been a portion of a longer timeout. I have increased the timeout to 30min and the error still occurred. This tells me that something else is at play, because the quantity of data could never take 30min to upload or download. The error comes and goes. At the moment, it is more frequent. It does not seem to matter if I have 3 clients running simultaneously or 100, it still occurs once in a while. Most of the time, there are no timeouts but I still get a few per hour. The error comes from any of the methods that are invoked. One of these methods does not have parameters and returns a bit of data. Another takes in lots of data as a parameter but executes asynchronously. The errors always originate from the client and never reference any code on the server in the stack trace. It always ends with: at System.Net.HttpWebRequest.GetResponse() at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelRequest.WaitForReply(TimeSpan timeout) On the server: I've tried (and currently have) the following binding settings: maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" maxBufferPoolSize="2147483647" It does not seem to have an impact. I've tried (and currently have) the following throttling settings: <serviceThrottling maxConcurrentCalls="1500" maxConcurrentInstances="1500" maxConcurrentSessions="1500"/> It does not seem to have an impact. I currently have the following settings for the WCF service. [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Single)] I ran with ConcurrencyMode.Multiple for a while, and the error still occurred. I've tried restarting IIS, restarting my underlying SQL Server, restarting the machine. All of these don't seem to have an impact. I've tried disabling the Windows firewall. It does not seem to have an impact. On the client, I have these settings: maxReceivedMessageSize="2147483647" <system.net> <connectionManagement> <add address="*" maxconnection="16"/> </connectionManagement> </system.net> My client closes its connections: var client = new MyClient(); try { return client.GetConfigurationOptions(); } finally { client.Close(); } I have changed the registry settings to allow more outgoing connections: MaxConnectionsPerServer=24, MaxConnectionsPer1_0Server=32. I have now just recently tried SvcTraceViewer.exe. I managed to catch one exception on the client end. I see that its duration is 1 minute. Looking at the server side trace, I can see that the server is not aware of this exception. The maximum duration I can see is 10 seconds. I have looked at active database connections using exec sp_who on the server. I only have a few (2-3). I have looked at TCP connections from one client using TCPview. It usually is around 2-3 and I have seen up to 5 or 6. Simply put, I am stumped. I have tried everything I could find, and must be missing something very simple that a WCF expert would be able to see. It is my gut feeling that something is blocking my clients at the low-level (TCP), before the server actually receives the message and/or that something is queuing the messages at the server level and never letting them process. If you have any performance counters I should look at, please let me know. (please indicate what values are bad, as some of these counters are hard to decypher). Also, how could I log the WCF message size? Finally, are there any tools our there that would allow me to test how many connections I can establish between my client and server (independently from my application) Thanks for your time! Extra information added June 20th: My WCF application does something similar to the following. while (true) { Step1GetConfigurationSettingsFromServerViaWCF(); // can change between calls Step2GetWorkUnitFromServerViaWCF(); DoWorkLocally(); // takes 5-15minutes. Step3SendBackResultsToServerViaWCF(); } Using WireShark, I did see that when the error occurs, I have a five TCP retransmissions followed by a TCP reset later on. My guess is the RST is coming from WCF killing the connection. The exception report I get is from Step3 timing out. I discovered this by looking at the tcp stream "tcp.stream eq 192". I then expanded my filter to "tcp.stream eq 192 and http and http.request.method eq POST" and saw 6 POSTs during this stream. This seemed odd, so I checked with another stream such as tcp.stream eq 100. I had three POSTs, which seems a bit more normal because I am doing three calls. However, I do close my connection after every WCF call, so I would have expected one call per stream (but I don't know much about TCP). Investigating a bit more, I dumped the http packet load to disk to look at what these six calls where. 1) Step3 2) Step1 3) Step2 4) Step3 - corrupted 5) Step1 6) Step2 My guess is two concurrent clients are using the same connection, that is why I saw duplicates. However, I still have a few more issues that I can't comprehend: a) Why is the packet corrupted? Random network fluke - maybe? The load is gzipped using this sample code: http://msdn.microsoft.com/en-us/library/ms751458.aspx - Could the code be buggy once in a while when used concurrently? I should test without the gzip library. b) Why would I see step 1 & step 2 running AFTER the corrupted operation timed out? It seems to me as if these operations should not have occurred. Maybe I am not looking at the right stream because my understanding of TCP is flawed. I have other streams that occur at the same time. I should investigate other streams - a quick glance at streams 190-194 show that the Step3 POST have proper payload data (not corrupted). Pushing me to look at the gzip library again.

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  • rotating bitmaps. In code.

    - by Marco van de Voort
    Is there a faster way to rotate a large bitmap by 90 or 270 degrees than simply doing a nested loop with inverted coordinates? The bitmaps are 8bpp and typically 2048*2400*8bpp Currently I do this by simply copying with argument inversion, roughly (pseudo code: for x = 0 to 2048-1 for y = 0 to 2048-1 dest[x][y]=src[y][x]; (In reality I do it with pointers, for a bit more speed, but that is roughly the same magnitude) GDI is quite slow with large images, and GPU load/store times for textures (GF7 cards) are in the same magnitude as the current CPU time. Any tips, pointers? An in-place algorithm would even be better, but speed is more important than being in-place. Target is Delphi, but it is more an algorithmic question. SSE(2) vectorization no problem, it is a big enough problem for me to code it in assembler Duplicates How do you rotate a two dimensional array?. Follow up to Nils' answer Image 2048x2700 - 2700x2048 Compiler Turbo Explorer 2006 with optimization on. Windows: Power scheme set to "Always on". (important!!!!) Machine: Core2 6600 (2.4 GHz) time with old routine: 32ms (step 1) time with stepsize 8 : 12ms time with stepsize 16 : 10ms time with stepsize 32+ : 9ms Meanwhile I also tested on a Athlon 64 X2 (5200+ iirc), and the speed up there was slightly more than a factor four (80 to 19 ms). The speed up is well worth it, thanks. Maybe that during the summer months I'll torture myself with a SSE(2) version. However I already thought about how to tackle that, and I think I'll run out of SSE2 registers for an straight implementation: for n:=0 to 7 do begin load r0, <source+n*rowsize> shift byte from r0 into r1 shift byte from r0 into r2 .. shift byte from r0 into r8 end; store r1, <target> store r2, <target+1*<rowsize> .. store r8, <target+7*<rowsize> So 8x8 needs 9 registers, but 32-bits SSE only has 8. Anyway that is something for the summer months :-) Note that the pointer thing is something that I do out of instinct, but it could be there is actually something to it, if your dimensions are not hardcoded, the compiler can't turn the mul into a shift. While muls an sich are cheap nowadays, they also generate more register pressure afaik. The code (validated by subtracting result from the "naieve" rotate1 implementation): const stepsize = 32; procedure rotatealign(Source: tbw8image; Target:tbw8image); var stepsx,stepsy,restx,resty : Integer; RowPitchSource, RowPitchTarget : Integer; pSource, pTarget,ps1,ps2 : pchar; x,y,i,j: integer; rpstep : integer; begin RowPitchSource := source.RowPitch; // bytes to jump to next line. Can be negative (includes alignment) RowPitchTarget := target.RowPitch; rpstep:=RowPitchTarget*stepsize; stepsx:=source.ImageWidth div stepsize; stepsy:=source.ImageHeight div stepsize; // check if mod 16=0 here for both dimensions, if so -> SSE2. for y := 0 to stepsy - 1 do begin psource:=source.GetImagePointer(0,y*stepsize); // gets pointer to pixel x,y ptarget:=Target.GetImagePointer(target.imagewidth-(y+1)*stepsize,0); for x := 0 to stepsx - 1 do begin for i := 0 to stepsize - 1 do begin ps1:=@psource[rowpitchsource*i]; // ( 0,i) ps2:=@ptarget[stepsize-1-i]; // (maxx-i,0); for j := 0 to stepsize - 1 do begin ps2[0]:=ps1[j]; inc(ps2,RowPitchTarget); end; end; inc(psource,stepsize); inc(ptarget,rpstep); end; end; // 3 more areas to do, with dimensions // - stepsy*stepsize * restx // right most column of restx width // - stepsx*stepsize * resty // bottom row with resty height // - restx*resty // bottom-right rectangle. restx:=source.ImageWidth mod stepsize; // typically zero because width is // typically 1024 or 2048 resty:=source.Imageheight mod stepsize; if restx>0 then begin // one loop less, since we know this fits in one line of "blocks" psource:=source.GetImagePointer(source.ImageWidth-restx,0); // gets pointer to pixel x,y ptarget:=Target.GetImagePointer(Target.imagewidth-stepsize,Target.imageheight-restx); for y := 0 to stepsy - 1 do begin for i := 0 to stepsize - 1 do begin ps1:=@psource[rowpitchsource*i]; // ( 0,i) ps2:=@ptarget[stepsize-1-i]; // (maxx-i,0); for j := 0 to restx - 1 do begin ps2[0]:=ps1[j]; inc(ps2,RowPitchTarget); end; end; inc(psource,stepsize*RowPitchSource); dec(ptarget,stepsize); end; end; if resty>0 then begin // one loop less, since we know this fits in one line of "blocks" psource:=source.GetImagePointer(0,source.ImageHeight-resty); // gets pointer to pixel x,y ptarget:=Target.GetImagePointer(0,0); for x := 0 to stepsx - 1 do begin for i := 0 to resty- 1 do begin ps1:=@psource[rowpitchsource*i]; // ( 0,i) ps2:=@ptarget[resty-1-i]; // (maxx-i,0); for j := 0 to stepsize - 1 do begin ps2[0]:=ps1[j]; inc(ps2,RowPitchTarget); end; end; inc(psource,stepsize); inc(ptarget,rpstep); end; end; if (resty>0) and (restx>0) then begin // another loop less, since only one block psource:=source.GetImagePointer(source.ImageWidth-restx,source.ImageHeight-resty); // gets pointer to pixel x,y ptarget:=Target.GetImagePointer(0,target.ImageHeight-restx); for i := 0 to resty- 1 do begin ps1:=@psource[rowpitchsource*i]; // ( 0,i) ps2:=@ptarget[resty-1-i]; // (maxx-i,0); for j := 0 to restx - 1 do begin ps2[0]:=ps1[j]; inc(ps2,RowPitchTarget); end; end; end; end;

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  • Server-side web browser for PHP?

    - by Lee
    If you wanted to re-create the DOM server-side and manipulate it in PHP, how would you choose to go about it? I'm looking for a fast, multi-user complete server-side web browser that can interface with PHP and run complete Javascript. Like Jaxer but something I can use with PHP... an extension would be fine, or even an Apache mod. Ideas?

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  • dynamically load PHP code from external file

    - by jera
    code is in a static class in an external file eg. /home/test/public_html/fg2/templatecode/RecordMOD/photoslide.mod how do I load this into my script on demand, and be able to call its functions ? I am a novice at php , so please explain your code. help is appreciated. Jer

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  • Can' get couchdb external http handlers to work.

    - by fuzzy lollipop
    following the instructions here http://wiki.apache.org/couchdb/ExternalProcesses this is what I get { * error: "{{badarg,[{erlang,port_command, [#Port<0.2056>, [123, [34,<<"info">>,34], 58, [123, [34,"db_name",34], 58, [34,<<"transfer_central">>,34], 44, [34,"doc_count",34], 58,"39441",44, [34,"doc_del_count",34], 58,"0",44, [34,"update_seq",34], 58,"56508",44, [34,"purge_seq",34], 58,"0",44, [34,"compact_running",34], 58,<<"false">>,44, [34,"disk_size",34], 58,"43593828",44, [34,"instance_start_time",34], 58, [34,<<"1272560477320483">>,34], 44, [34,"disk_format_version",34], 58,"5",125], 44, [34,<<"id">>,34], 58,<<"null">>,44, [34,<<"method">>,34], 58, [34,"GET",34], 44, [34,<<"path">>,34], 58, [91, [34,<<"transfer_central">>,34], 44, [34,<<"_test">>,34], 93], 44, [34,<<"query">>,34], 58,<<"{}">>,44, [34,<<"headers">>,34], 58, [123, [34,<<"Accept">>,34], 58, [34, <<"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json">>, 34], 44, [34,<<"Accept-Charset">>,34], 58, [34,<<"ISO-8859-1,utf-8;q=0.7,*;q=0.7">>,34], 44, [34,<<"Accept-Encoding">>,34], 58, [34,<<"gzip,deflate">>,34], 44, [34,<<"Accept-Language">>,34], 58, [34,<<"en-us,en;q=0.5">>,34], 44, [34,<<"Connection">>,34], 58, [34,<<"keep-alive">>,34], 44, [34,<<"Host">>,34], 58, [34,<<"127.0.0.1:5984">>,34], 44, [34,<<"Keep-Alive">>,34], 58, [34,<<"115">>,34], 44, [34,<<"User-Agent">>,34], 58, [34, <<"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3">>, 34], 125], 44, [34,<<"body">>,34], 58, [34,"undefined",34], 44, [34,<<"peer">>,34], 58, [34,<<"127.0.0.1">>,34], 44, [34,<<"form">>,34], 58,<<"{}">>,44, [34,<<"cookie">>,34], 58,<<"{}">>,44, [34,<<"userCtx">>,34], 58, [123, [34,<<"db">>,34], 58, [34,<<"transfer_central">>,34], 44, [34,<<"name">>,34], 58,<<"null">>,44, [34,<<"roles">>,34], 58,<<"[]">>,125], 125,10]]}, {couch_os_process,writeline,2}, {couch_os_process,writejson,2}, {couch_os_process,handle_call,3}, {gen_server,handle_msg,5}, {proc_lib,init_p_do_apply,3}]}, {gen_server,call, [<0.110.0>, {prompt,{[{<<"info">>, {[{db_name,<<"transfer_central">>}, {doc_count,39441}, {doc_del_count,0}, {update_seq,56508}, {purge_seq,0}, {compact_running,false}, {disk_size,43593828}, {instance_start_time,<<"1272560477320483">>}, {disk_format_version,5}]}}, {<<"id">>,null}, {<<"method">>,'GET'}, {<<"path">>,[<<"transfer_central">>,<<"_test">>]}, {<<"query">>,{[]}}, {<<"headers">>, {[{<<"Accept">>, <<"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json">>}, {<<"Accept-Charset">>, <<"ISO-8859-1,utf-8;q=0.7,*;q=0.7">>}, {<<"Accept-Encoding">>,<<"gzip,deflate">>}, {<<"Accept-Language">>,<<"en-us,en;q=0.5">>}, {<<"Connection">>,<<"keep-alive">>}, {<<"Host">>,<<"127.0.0.1:5984">>}, {<<"Keep-Alive">>,<<"115">>}, {<<"User-Agent">>, <<"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3">>}]}}, {<<"body">>,undefined}, {<<"peer">>,<<"127.0.0.1">>}, {<<"form">>,{[]}}, {<<"cookie">>,{[]}}, {<<"userCtx">>, {[{<<"db">>,<<"transfer_central">>}, {<<"name">>,null}, {<<"roles">>,[]}]}}]}}, infinity]}}" * reason: "{gen_server,call, [<0.109.0>, {execute,{[{<<"info">>, {[{db_name,<<"transfer_central">>}, {doc_count,39441}, {doc_del_count,0}, {update_seq,56508}, {purge_seq,0}, {compact_running,false}, {disk_size,43593828}, {instance_start_time,<<"1272560477320483">>}, {disk_format_version,5}]}}, {<<"id">>,null}, {<<"method">>,'GET'}, {<<"path">>,[<<"transfer_central">>,<<"_test">>]}, {<<"query">>,{[]}}, {<<"headers">>, {[{<<"Accept">>, <<"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json">>}, {<<"Accept-Charset">>, <<"ISO-8859-1,utf-8;q=0.7,*;q=0.7">>}, {<<"Accept-Encoding">>,<<"gzip,deflate">>}, {<<"Accept-Language">>,<<"en-us,en;q=0.5">>}, {<<"Connection">>,<<"keep-alive">>}, {<<"Host">>,<<"127.0.0.1:5984">>}, {<<"Keep-Alive">>,<<"115">>}, {<<"User-Agent">>, <<"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3">>}]}}, {<<"body">>,undefined}, {<<"peer">>,<<"127.0.0.1">>}, {<<"form">>,{[]}}, {<<"cookie">>,{[]}}, {<<"userCtx">>, {[{<<"db">>,<<"transfer_central">>}, {<<"name">>,null}, {<<"roles">>,[]}]}}]}}, infinity]}" }

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  • Emulator typing "="

    - by Anton
    Hello. I have a problem with Android Emulator. I have created avd and run it. But when it was started I can't work, because it emulate typing many "=" symbol. I launch this avd with -debug-all parameter and debuger write "could not handle (sym=61, mod=0, str=EQUAL) KEY [0x00d, down]". OS - Windows Vista. Last version Java platform, SDK, Eclipse. Thank you very mach if you can hep me =)

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  • Question about C behaviour for unsigned integer underflow

    - by nn
    I have read in many places that integer overflow is well-defined in C unlike the signed counterpart. Is underflow the same? For example: unsigned int x = -1; // Does x == UINT_MAX? Thanks. I can't recall where, but i read somewhere that arithmetic on unsigned integral types is modular, so if that were the case then -1 == UINT_MAX mod (UINT_MAX+1).

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  • append files to an archive without reading/rewriting the whole archive

    - by bene
    I've got many files that I want to store in a single archive file. My first approach was to store the files in a gzipped tarball. The problem is, that I've to rewrite the whole archive if a single file is added. I could get rid of the gzip compression, but adding a file would still be expensive. What other archive format would you suggest that allows fast append operations?

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  • How to not write the full url in javascript ?

    - by Axel
    Hi, I did a Mod rewrite for my website so the URLs looks like this : http://www.mydomain.com/health/54856 http://www.mydomain.com/economy/strategy/911025/ http://www.mydomain.com/tags/obama/new So, the problem is that i make AJAX calls to a file here : http://www.mydomain.com/login.php And i don't want to write the FULL url or even use ../ trick because there isn't a fixed number of folders. So, what i want now, is something worked for my code to access the login.php from the root whatever the domain name is : $.ajax({ type: "POST", url: "http://www.mydomain.com/login.php" });

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  • (resolved) empty response body in ajax (or 206 Partial Content)

    - by Nikita Rybak
    Hi guys, I'm feeling completely stupid because I've spent two hours solving task which should be very simple and which I solved many times before. But now I'm not even sure in which direction to dig. I fail to fetch static content using ajax from local servers (Apache and Mongrel). I get responses 200 and 206 (depending on the server), empty response text (although Content-Length header is always correct), firebug shows request in red. Javascript is very generic, I'm getting same results even here: http://www.w3schools.com/ajax/tryit.asp?filename=tryajax_first (just change document location to 'http://localhost:3000/whatever') So, it's probably not the cause. Well, now I'm out of ideas. I can also post http headers, if it'll help. Thanks! Response Headers Connection close Date Sat, 01 May 2010 21:05:23 GMT Last-Modified Sun, 18 Apr 2010 19:33:26 GMT Content-Type text/html Content-Length 7466 Request Headers Host localhost:3000 User-Agent Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Referer http://www.w3schools.com/ajax/tryit_view.asp Origin http://www.w3schools.com Response Headers Date Sat, 01 May 2010 21:54:59 GMT Server Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 mod_jk/1.2.28 Etag "3d5cbdb-fb4-4819c460d4a40" Accept-Ranges bytes Content-Length 4020 Cache-Control max-age=7200, public, proxy-revalidate Expires Sat, 01 May 2010 23:54:59 GMT Content-Range bytes 0-4019/4020 Keep-Alive timeout=5, max=100 Connection Keep-Alive Content-Type application/javascript Request Headers Host localhost User-Agent Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language en-us,en;q=0.5 Accept-Encoding gzip,deflate Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive 115 Connection keep-alive Origin null UPDATED: I've found a problem, it was about cross-domain requests. I knew that there are restrictions, but thought they're relaxed for local filesystem and local servers. (and expected more descriptive error message, anyway) Thanks everybody!

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  • How do I modify a HTTP response packet with winpcap?

    - by httpinterpret
    There are two problems here: What if content is encoded:gzip... Do I also need to change the header part to make the HTTP packet valid(checksums if any?) UPDATE Can someone with actual experience elaborate the steps involved? I'm using winpcap and bpf tcp and src port 80 to filter the traffic,so my job lies in this callback function: void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data)

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