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  • NSURLConnectionDelegate connection:didReceiveData not working

    - by Shibin Moideen
    Hi All, I need some help regarding the NSURLConnectionDelegate method. - (void)startDownload { NSString *URLString = [NSString stringWithFormat:appRecord.imageURLString]; NSURL *url = [NSURL URLWithString:URLString]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; imageConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if(imageConnection) { activeDownload = [NSMutableData data]; } } I am using this method to initiate the NSURLConnection, but the - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data is not calling.. Need Help Thanks in advance, Shibin

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  • Handling connection errors in a MDB

    - by Rafa de Castro
    Is it possible to manage connection timeouts or errors in a MessageDrivenBean? You can make the factory to retry connecting a certain number of times but... is it possible to make some actions each time that a reconnection retrial is neccesary? Is it possible to register an ExceptionListener into the MessageDrivenBean's connection somehow? Thanks a lot.

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  • FTP Error: No control connection for command: Permission denied

    - by ravi2082
    Hi, I am trying to access a external ftp server through my company's FTP proxy from a bash prompt and I am getting the below issue after I enter the user name 421 Service not available, remote server has closed connection Login failed. No control connection for command: Permission denied The proxy works fine for all other sites but I am unable to access a site which has been recently setup using this proxy. Can it be an issue at the site's end like allowing our proxy ip address thru their firewall to access their server? Thanks

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  • NHibernate : recover session after connection lost

    - by Catalin DICU
    I'm using NHibernate with SQL Server 2005 in a WPF client application. If I manually stop the SQL Server service and then restart it the session doesn't automatically reconnect. So far I'm doing this witch seems to work : try { using (ITransaction transaction = this.Session.BeginTransaction()) { // some select here } }catch(Exception ex) { if(this.Session.Connection.State == ConnectionState.Closed) { try { this.Session.Connection.Open(); } catch (Exception) { } } } Is there a better way ?

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  • Remote MySQL connection fails (10060)

    - by Stefan Åstrand
    When I am trying to connect to a MySQL database from a remote computer I get a prompt saying: Connection Failed: [HY000] [MySQL][ODBC 5.1 Driver]Can't Connect to MySQL server on 'XXX.XXX.XX.XX' (10060) I have created a user account in the MySQL Administrator and added a host to enable remote access, I have also made an exception for my Windows Firewall on port 3306 but the connection still fails. What is the problem? Thanks!

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  • javax.naming.NameNotFoundException: Name [comp/env] is not bound in this Context. Unable to find [comp] error with java scheduler

    - by Morgan Azhari
    What I'm trying to do is to update my database after a period of time. So I'm using java scheduler and connection pooling. I don't know why but my code only working once. It will print: init success success javax.naming.NameNotFoundException: Name [comp/env] is not bound in this Context. Unable to find [comp]. at org.apache.naming.NamingContext.lookup(NamingContext.java:820) at org.apache.naming.NamingContext.lookup(NamingContext.java:168) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:158) at javax.naming.InitialContext.lookup(InitialContext.java:411) at test.Pool.main(Pool.java:25) ---> line 25 is Context envContext = (Context)initialContext.lookup("java:/comp/env"); I don't know why it only works once. I already test it if I didn't running it without java scheduler and it works fine. No error whatsoerver. Don't know why i get this error if I running it using scheduler. Hope someone can help me. My connection pooling code: public class Pool { public DataSource main() { try { InitialContext initialContext = new InitialContext(); Context envContext = (Context)initialContext.lookup("java:/comp/env"); DataSource datasource = new DataSource(); datasource = (DataSource)envContext.lookup("jdbc/test"); return datasource; } catch (Exception ex) { ex.printStackTrace(); } return null; } } my web.xml: <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <listener> <listener-class> package.test.Pool</listener-class> </listener> <resource-ref> <description>DB Connection Pooling</description> <res-ref-name>jdbc/test</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> Context.xml: <?xml version="1.0" encoding="UTF-8"?> <Context path="/project" reloadable="true"> <Resource auth="Container" defaultReadOnly="false" driverClassName="com.mysql.jdbc.Driver" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" initialSize="0" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer" jmxEnabled="true" logAbandoned="true" maxActive="300" maxIdle="50" maxWait="10000" minEvictableIdleTimeMillis="300000" minIdle="30" name="jdbc/test" password="test" removeAbandoned="true" removeAbandonedTimeout="60" testOnBorrow="true" testOnReturn="false" testWhileIdle="true" timeBetweenEvictionRunsMillis="30000" type="javax.sql.DataSource" url="jdbc:mysql://localhost:3306/database?noAccessToProcedureBodies=true" username="root" validationInterval="30000" validationQuery="SELECT 1"/> </Context> my java scheduler public class Scheduler extends HttpServlet{ public void init() throws ServletException { System.out.println("init success"); try{ Scheduling_test test = new Scheduling_test(); ScheduledExecutorService executor = Executors.newScheduledThreadPool(100); ScheduledFuture future = executor.scheduleWithFixedDelay(test, 1, 60 ,TimeUnit.SECONDS); }catch(Exception e){ e.printStackTrace(); } } } Schedule_test public class Scheduling_test extends Thread implements Runnable{ public void run(){ Updating updating = new Updating(); updating.run(); } } updating public class Updating{ public void run(){ ResultSet rs = null; PreparedStatement p = null; StringBuilder sb = new StringBuilder(); Pool pool = new Pool(); Connection con = null; DataSource datasource = null; try{ datasource = pool.main(); con=datasource.getConnection(); sb.append("SELECT * FROM database"); p = con.prepareStatement(sb.toString()); rs = p.executeQuery(); rs.close(); con.close(); p.close(); datasource.close(); System.out.println("success"); }catch (Exception e){ e.printStackTrace(); } }

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  • SQL Server connection help...

    - by Gopal
    Using SQL Server 2005 I have the server connection name as (server1) in windows authentication mode, I want to change windows authentication mode to sql server authentication mode... when i try to change sql server authentication mode with username = sa & password = sa, it showing error... How to change the authentication mode or how to create a new sql connection?

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  • Subgraph isomorphism on disconnected graphs with connection rules

    - by Mac
    Hello I was wondering if anyone knows about a solution to the following problem: Given a graph g as query and a set of graphs B with connection rules R. The connection rules describe how two graphs out of B can be linked together. Linking points are marked vertexes. Find all combination of graphs in B that contain g as a subgraph. Regards Mac

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  • SQL Server connection identification

    - by andrew007
    Hi, I have several developers which connect to production and test servers where we have DBs with similar names and structures. In SSMS there are info related to the connection, but sometimes are not properly displayed and/or hidden. I know that it is possible to customize the status bar of each connection in SSMS, but how do you ensure that your developer is connecting to the right server before he runs a query? Is there any way to handle this? THANKS!

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  • how to send an array of bytes over a TCP connection (java programming)

    - by Mark Roberts
    Can somebody demonstrate how to send an array of bytes over a TCP connection from a sender program to a receiver program in Java. (I'm new to Java programming, and can't seem to find an example of how to do this that shows both ends of the connection (sender and receiver.) If you know of an existing example, maybe you could post the link. (No need to reinvent the wheel.) P.S. This is NOT homework! :-)

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  • arbitrary vire connection / search and replace

    - by fatai
    input :["vire_connection",[1, 2, [ 3, [ 4, "connect"]]], ["connect", [3 , 5] ] ] output:["vire_connection",[ 1, 2, [ 3, [ 4, [ 3, 5 ] ] ] ] ], [ [ 3 , 5] ] ] after connection ( simply copying [3,5] to other wanted position ) , remove connect word input :["vire_connection", [ [ [ ["connect", [ 3, 4 ] ] ] ] ], [ 2, "connect"]] output :["vire_connection",[[[[[3,4]]]]], [ 2, [ 3 , 4 ]]] after connection ( simply copying [3,4] to other wanted position ) , remove connect word how can I do ?

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  • Developing GWT without a net connection?

    - by user246114
    Hi, When I'm developing my gwt project without a network connection, is there a way to detect this? For example, I have a widget that has an Image in it, and the widget does not display until the Image url request times out (takes a long time, like 2 minutes?). Also, whenever I refresh the page in hosted mode, it doesn't finish loading for about a minute, when no network connection - seems like gwt is trying to contact some external website and blocking on that until it times out too - making things really slow - any way to stop that too? Thanks

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  • R language: open ssh connection

    - by marpo_it
    I am trying to open a remote shell via ssh to send commands from R. As long as I send commands, I need to get results and send new commands that depends on the output of the previous ones. For this reason I am looking for a solution to open a connection and manage it from within the R code until I have finished. I also need to open the connection with ssh key exchange (so without password authentication). Looking at CRAN I didn't find anything useful.

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  • load balance timeout SQL connection string

    - by george9170
    It seems that if there is a sql memory leak somewhere and you dont have time to find it you can use the load balance timeout option in a sql connection string to destory the connection after x seconds. Am i right in assuming I can set the load balance time out to 30-40 seconds and then hunt for the leak latter, while in the mean time the leak will not affect my application too much.

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