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  • PHP callback function not being called

    - by Industrial
    Hi everyone, I've got the following code: function _callback_memcache_failure($host, $port) { print "memcache '$host:$port' failed"; } $this->memcache = new Memcache; $this->memcache->addServer('192.168.1.35', '11211', 0, 50, 10, TRUE, _callback_memcache_failure('192.168.1.35','11211')); The server is online and running (verified!), but the Failure callback function is being called at each connection. Why is that? Reference: PHP documentation: Memcache::addServer - failure_callback Allows the user to specify a callback function to run upon encountering an error. The callback is run before failover is attempted. The function takes two parameters, the hostname and port of the failed server .

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  • What scenarios/settings will result in a query on SQL Server (2008) return stale data

    - by s1mm0t
    Most applications rarely need to display 100% accurate data. For example if this stack overflow question displays that there have been 0 views, when there have really been 10, it doesn't really matter. This is one way that the (perceived) performance of applications can be improved, by caching results and therefore sometimes not showing 100% accurate results. There are some cases where the data does need to be 100% accurate though. So if I run the query select * from Foo I want to be sure that the results are not stale. Now depending on how my database is set up, other activity on the database, use of transactions and isolation levels etc this query may or may not be a true reflection of the world. What scenario's and settings can people think of that will result in this query returning stale results or given that another connection is part way through a transaction that has updated this table, how can I guarantee that when the above query returns, the results will be accurate.

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  • oomla.. GoDaddy.. FileZilla ... :S

    - by user282659
    have created a a website in my localhost computer using Joomla Now I want to launch the site into the web.. So I brought a domain from GoDaddy.com .. Im a newbie into this and I was using This Tutorial in order to set up the website... Now Im Stuck in the Step 08 Which asks to upload some files into the web host directory... I used FileZilla as my FTP Client .. When I give the host name and the password, Port number as 21 and try to login it says.. Connection Timed Out.. and says.. Could Not Connect to server . Plase explain m on how to use the FileZilla.. And Solve th above problem ..

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  • How to start SQL Server in a remote machine using code from Delphi?

    - by MLB
    Hi there: I am developing an application (Delphi 7, windows XP) that uses a connection to a remote SQL Server. Sometimes, that server is down, and I want to do something to start it. I was trying to start SQL Server in a local context, and it was fine, it worked... But the point is that I have to start it up from a remote machine. I can see SQL Server status from a remote server, but I can't start it up... Maybe it gets problems because of user and password, but where to specify the login to the remote machine? Do you have any idea to do this??? I am sorry about my English. Thanks.

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  • Rails gives wrong headers after upgrade 2.3.5 -> 2.3.8

    - by macsniper
    I just upgraded from rails 2.3.5 to rails 2.3.8, but now my redirects are not working properly. I get the following as the response HTTP Headers: HTTP/1.1 302 Moved Temporarily Date: Wed, 02 Jun 2010 09:40:39 GMT Content-Length: 93 Content-Type: text/html whereas I got previous: HTTP/1.1 302 Moved Temporarily Connection: close Date: Wed, 02 Jun 2010 09:41:18 GMT Set-Cookie: _session_id=<correct id>; path=/ Status: 302 Found Location: <correct url> Cache-Control: no-cache Server: Mongrel 1.1.5 Content-Type: text/html; charset=utf-8 Content-Length: 93 Anyone knows how to fix this? Despite the fact that the redirect is not working, the login-cookie is not set too (but I think, this is both related somehow). I have already tried to override redirect_to in order to set response.headers['Location'] etc., but they did not appear in the response.

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  • Array to string conversion in (cant get it to work)

    - by user2966551
    ok I am trying to pull a a specific row of data that corresponds to the username logged in. on my page I have started my session but for some reason I cant get the code to work.i keep getting a "Array to string conversion in " on the line " WHERE username = '$_SESSION[user]'");" what am I doing wrong? if I set username = a set username it works but I need it to draw from the session id so it will display different values based on whos logged in. <?php $con=mysqli_connect("localhost","root","xxx","xxxx"); // Check connection if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $result = mysqli_query($con,"SELECT * FROM users WHERE username = '$_SESSION[user]'"); while($row = mysqli_fetch_array($result)) { echo $row['username'] . " " . $row['att']; echo "<br>"; } ?>

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  • How should I mock out my data connectivity

    - by BobTheBuilder
    I'm trying to unit test my Data Access Layer and I'm in the process of trying to mock my data connectivity to unit test my DAL and I'm coming unstuck trying to mock out the creation of the commands. I thought about using a queue of IDbParameters for the creation of the parameters, but the unit tests then require that the parameters are configured in the right order. I'm using MOQ and having looked around for some documentation to walk me through this, I'm finding lots of recommendation not to do this, but to write a wrapper for the connection, but it's my contention that my DAL is supposed to be the wrapper for my database and I don't feel I should be writing wrappers... if I do, how do I unit test the connectivity to the database for my wrapper? By writing another wrapper? It seems like it's turtles all the way down. So does anyone have any recommendations or tutorials regarding this particular area of unit testing/mocking?

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  • Facebook iframe app redirecting https to http, how?

    - by Paul Whitrow
    I'm trying to get an app working within Facebook, but it seems that no matter what I try including forcing just https in the app settings (see screen shot), the iframe source (Facebooks canvas) seems to change the https address to http (301) which is then producing SEC7111: HTTPS security errors in IE? (sorry I can't post screen shots or extra links yet:( ) Header dump of page in question: Request URL:https://[hidden] Request Method:POST Status Code:301 Moved Permanently Request Headers (13) Form Data (1) Response Headersview source Connection:keep-alive Content-Encoding:gzip Content-Length:253 Content-Type:text/html; charset=iso-8859-1 Date:Mon, 01 Jul 2013 09:42:32 GMT Location:http://[hidden] Server:Apache/2.2.22 Vary:Accept-Encoding I'm getting so confused by this, and would welcome any help that the community could offer.

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  • Ruby: Streaming large AWS S3 object freezes

    - by Peter
    Hi, I am using the ruby aws/s3 library to retrieve files from Amazon S3. I stream an object and write it to file as per the documentation (with debug every 100 chunks to confirm progress) This works for small files, but randomly freezes downloading large (150MB) files on VPS Ubuntu. Fetching the same files (150MB) from my mac on a much slower connection works just fine. When it hangs there is no error thrown and the last line of debug output is the 'Finished chunk'. I've seen it write between 100 and 10,000 chunks before freezing. Anyone come across this or have ideas on what the cause might be? Thanks The code that hangs: i=1 open(local_file, 'w') do |f| AWS::S3::S3Object.value(key, @s3_bucket) do |chunk| puts("Writing chunk #{i}") f.write chunk.read_body puts("Finished chunk #{i}") i=i+1 end end

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  • asp.net could a half submitted web page be processed?

    - by c00ke
    Having a weird bug in production and just wondering if it's possible for a half submitted web page to processed by the server? The page has no view state just using plain old html controls and accessing data displayed in repeater on the back end via Request.Form[name] etc. Is it possible for a request to be truncated perhaps due to lost internet connection and the page still processed by the server. Therefore if field not part of the request Request.Form[name] could result in null? I know can use fiddler to modify request but unfortunately we are not allowed to change group policy and change the proxy! Many Thanks

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  • iphone application development -- passing data to and from the server.

    - by SAPNA
    i have to develop an -phone application .user logs in through the i-phone and gets data stored in the database.our database is created in MY SQL. and website is developed in (classic) ASP.interface is created in i-phone SDK. connection is remaining.what should i use for transferring data to server and from the server. JSON or SOAP.is XML parsing necessary.actually i am very new to this field. so a bit confused. we have some time left for completing our application.so in urgent need of help. thank you in advance.

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  • What is wrong with this simple update query?

    - by Kyle Noland
    I get no error message, but the row is not updated. The rows integer is set 1 following the query, indicating that 1 row was affected. String query = "UPDATE contacts SET contact_name = '" + ContactName.Text.Trim() + "', " + "contact_phone = '" + Phone.Text.Trim() + "', " + "contact_fax = '" + Fax.Text.Trim() + "', " + "contact_direct = '" + Direct.Text.Trim() + "', " + "company_id = '" + Company.SelectedValue + "', " + "contact_address1 = '" + Address1.Text.Trim() + "', " + "contact_address2 = '" + Address2.Text.Trim() + "', " + "contact_city = '" + City.Text.Trim() + "', " + "contact_state = '" + State.SelectedValue + "', " + "contact_zip = '" + Zip.Text.Trim() + "' " + "WHERE contact_id = '" + contact_id + "'"; String cs = Lib.GetConnectionString(null); SqlConnection conn = new SqlConnection(cs); SqlCommand cmd = conn.CreateCommand(); cmd.CommandText = query; cmd.Connection.Open(); int rows = cmd.ExecuteNonQuery();

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  • Cannot insert into SQLite database through php PDO

    - by user323941
    Pls help see what is wrong.... (I test the db connection is fine) <?php $user_name=$_POST['user_name']; $password=$_POST['password']; $dbh=new PDO('sqlite:./db/user.db') or die("fail to connect db"); try{ $stmt = $dbh->prepare("INSERT INTO user_info VALUES (?, ?)"); $stmt->bindParam(1, $a); $stmt->bindParam(2, $b); $a=$user_name; $b=$password; $stmt->execute(); } catch(PDOException $e) {echo $e->getMessage();} ?>

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  • Beginners PHP / mySQL question

    - by Reg H
    I'm brand new to PHP & MySQL, and one function I'm creating needs to access a large table or database. I've created the database and it's currently in a MySQL table, which I'm accessing with no problem. The table is 11,000 rows in length, with 8 columns (all text less than 8 characters long) - it's static, and will never change. Without getting too particular, my users will hit a button which will trigger scripts to access the data, say 500 times or more. So in general would it be better practice to include all of this data in a big 'switch' or 'if... then' conditional right in my scripts, rather than opening and accessing the database connection hundreds, or maybe even thousands of times? It just seems like that might be a bottleneck waiting to happen. Thanks!

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  • Can single-buffer blocking WSASend deliver partial data?

    - by CodeAngry
    I've pretty much always used send() with sockets and now I'm moving onto the WSA functions. With send(), I have a sendall() helper that ensured all data is delivered even if it didn't happen in one try and a partial send occurred on first call. So, instead of learning the hard way or over-complicating code when I don't have to, decided to ask you: Can a blocking WSASend() send partial data or does it send everything before it returns or fails? Or should I check the bytes sent vs. expected to send and keep at it until everything is delivered? ANSWER: Overlapped WSASend() does not send partial data but if it does, it means the connection has terminated. I've never encountered the case yet.

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  • Singleton wrapper for Context

    - by kpdvx
    I'm considering creating a singleton wrapper for a Context so my model objects, if necessary, can open and read from a database connection. My model objects do not have access to a Context, and I'd like to avoid needing to pass a reference to a Context from object to object. I was planning to place into this singleton a reference to the Context returned by Application.getApplicationContext(). This singleton object would be initialized in my custom Application instance before anything else would need to or have a chance to use it. Can anyone think of a reason to not do this?

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  • partially connected application using asp.net 3.5 (not mobile apps)

    - by Hari
    We had a requirement to build a ASP.NET 3.5 web application using web forms, WCF, ADO.NET and SQL Server. The users would connect via Internet. Recently we understood that it is possible that users would often remain disconnected and would have Internet access intermittently. I need to understand if we can create occasionally connected web application using asp.net 3.5 - what all technologies/features we need to use? Is MS Sync Framework the answer to the problem - is it a viable option to use with web application? Is windows application the right approach instead of web applications - where the business logic would be run at the client itself, using local SQL Express editions with data then been synced up with Enterprise SQL server at server end when connection is established using replication and/or MS Sync framework. In that case is there a need to use WCF? Does Silverlight applications help in this context -building paritally connected web apps? Really appreciate if you can give pointers to how to go about this task of creating .net partially connected apps (not mobile apps)?

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  • Why is my socket closing?

    - by Tommy3244
    Ok, so I am making a multiplayer game. I am working out the kinks in the server/client connectivity system. I can't seam to work out this error. Mainly, my server code does the following: Accepts Client Using SocketServer Module CLIENT -- SERVER sends Login byte (1 byte) + login username and password (200 bytes) SERVER request for 1 byte by struct.calcsize('b') CLIENT has exception on read SERVER recieves byte from CLIENT and sends CLIENT a struct packed byte with the value of 4 SERVER has exception on send So, it is the client excepting. The client exception is: socket.error: (10054, 'Connection reset by peer') And the server error is this: error: (9, 'Bad file descriptor')

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  • Inserting empty string into auto_increment column in MySQL 5

    - by QmunkE
    Hi, I've inherited a project which we are trying to migrate to MySQL 5 from MySQL 4.0(!) and from myISAM to InnoDB. Queries are now falling down because they are being constructed using an ADODB connection's -qstr() on all parameters, including ints. Where no value is provided I end up with: INSERT INTO tablename VALUES ('', 'stuff'...) where the first column is an auto_increment. This causes an error (fair enough since '' isn't an int). Is there a switch in MySQL to make it behave as it used to (I assume it just silently converted to 0?) Thanks.

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  • Android Terminal and Log Dumping

    - by J3hova
    I am trying to send terminal commands programmaticly from an android activity. At the moment I'm using something like the following: Process process = null; DataOutputStream os = null; process = Runtime.getRuntime().exec("su"); os = new DataOutputStream(process.getOutputStream()); os.writeBytes("./data/program1\n"); os.writeBytes("./data/program2\n"); os.writeBytes("exit\n"); os.flush(); However, my program1 is failing to run successfully and I believe it is due to inadequate user permissions. Now for my question: Does anyone know how I can dump the terminal to a file and save it on the phone or sdcard? The program is tying into the terminal to feed it commands, I want to know a way to open a connection the otherway and access the (what is normally visual on a terminal screen) output.

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  • Mobile web apps - Is this the right approach?

    - by Pasta
    I need to build a cross platform mobile app (iphone, android, etc). The app is for a company like a cellular operator (Tmobile, ATT). The app needs to do the following: Show previous bills (cached so that it does not have to download everytime) Need an internet connection to download newer bills, view recent data, etc. Can I build a mobile web app to handle this? I understand that there is offline storage and iPhone has good support for web apps (full screen, good icons, offline, etc). Will a web app be the best approach to take as the app requires to be online? The app will not be used by lots of people, just customers of the website who don't want to use an existing website. We are all web developers and a mobile web app looks like the best way to approach this.

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  • Design cache mechanism

    - by Delashmate
    Hi All, I got assignment to write design for cache mechanism, This is my first time writing a design document, Our program display images for doctors, and we wan't to reduce the parsing time of the images So we want to save the parsed data in advance (in files or inside database) Currently I have several design key ideas Handle locks - each shared data structure should be handled, also files Test - add test to verify the data from the cache is equal to the data from the files To decouple the connection to the database- not to call directly to the database Cleanup mechanisem- to delete old files if the cahce directory exceed configurable threshold Support config file Support performance tool in the feature I will also add class diagram, data flow charts, and workflow What do you think I should add to the key ideas? Do you know good link to atricales about design? Thanks in advance, Dan

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  • XAMPP on windows 7 not working properly

    - by 404Error
    Hey there, I just installed XAMPP lite on Windows 7. I have two drives - C: for the OS and regular files, and an external drive E:. I installed XAMPP lite on E: (on the root), and its been giving me problems. Apache works well enough, but MySQL doesn't work. When I go to http://localhost/phpmyadmin/, it gives me the following error: Error MySQL said: #2003 - Can't connect to MySQL server on 'localhost' (10061) Connection for controluser as defined in your configuration failed. Any ideas as to what could be the problem? I used the zip file for XAMPP lite, the 32 bit version. This is on Windows 7 Home premium. Thanks!

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  • Why can I not have two SocketServers bound to two different ports in the same application?

    - by uriDium
    I am using .Net 3.5 and Windows XP not sure if any more information is needed. I have an application that creates a socket, binds to a port and starts listening. A client comes and connects and then disconnects no problem. It can then reconnect no problem. If I have to sockets each listening on a different (e.g. 50 000 and 55 000) then it will accept the connection but it will not allow a reconnect. I will post source code if needed but I am assuming that it is just something simple that I am not catching.

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  • Best way to utilise an include file which just includes an array in PHP

    - by alex
    Kohana's config files look like this.. here is an example of a database config file (simplified) return array( 'dbhost' => 'localhost', 'user' => 'Tom_Jones' ); I've also got a CMS which wants the connection details. Whilst the CMS uses a different user (with more rights), I'd like to know the best way to include this file and get the data out of it (so as to not repeat myself for hostname and dbname). I haven't thought up of any elegant solutions yet and have not yet dug around Kohana to see how it does it. It's late Friday here so it's probably really obvious to everyone except me. UPDATE My apologies, I forgot to include that this is using Kohana 3!

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