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Questions tagged [connection]

Refers to a connection used to transfer data between two endpoints, such as between a client and a web, database, web service or other server.

A connection is a session established between two communications endpoint applications.

10252 questions
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How to check if a socket is connected/disconnected in C#?

How can you check if a network socket (System.Net.Sockets.Socket) is still connected if the other host doesn't send you a packet when it disconnects (e.g. because it disconnected ungracefully)?
lesderid
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How do I connect to mongodb with node.js (and authenticate)?

How do I connect to mongodb with node.js? I have the node-mongodb-native driver. There's apparently 0 documentation. Is it something like this? var mongo = require('mongodb/lib/mongodb'); var Db= new mongo.Db( dbname, new mongo.Server(…
Mark
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AWS EC2 Connection closed by when trying ssh into instance

Recently I set up a new EC2 instance. The next day I was not able to connect to my instance via ssh. I could connect and disconnect the day before, I am sure I did nothing. Here is ssh debug info: ssh -i webserver.pem -v…
Victor Davydov
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mySQL Error 1040: Too Many Connection

How to fix these, "SQL Error 1040: Too Many Connection" even I try to put max_user_connection=500 still "Too many connection"
kelvzy
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Failed to connect to mysql at 127.0.0.1:3306 with user root access denied for user 'root'@'localhost'(using password:YES)

I've been trying to create a new database connection on workbench. However, every time I test a connection there is an error message that says Failed to connect to mysql at 127.0.0.1:3306 with user root access denied for user…
cpl
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How to kill MySQL connections

I'm building a website with MySQL. I'm using TOAD for MySQL and suddenly I can't connect to the database as I'm getting an error: "Too many connections" Is there any way in Toad for MySQL to view existing connections to be able to kill them or…
leora
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HttpClient 4.0.1 - how to release connection?

I have a loop over a bunch of URLs, for each one I'm doing the following: private String doQuery(String url) { HttpGet httpGet = new HttpGet(url); setDefaultHeaders(httpGet); // static method HttpResponse response =…
Richard H
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How to check if internet connection is present in Java?

How do you check if you can connect to the internet via java? One way would be: final URL url = new URL("http://www.google.com"); final URLConnection conn = url.openConnection(); ... if we got here, we should have net ... But is there something…
Chris
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java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

The following code: Class.forName("com.mysql.jdbc.Driver"); Connection m_connection = DriverManager.getConnection("jdbc:mysql://localhost","root","root"); Throws this exception on getConnection(): java.sql.SQLException: Access denied for user…
JAN
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Cannot connect to MySQL 4.1+ using old authentication

I'm trying to connect to a mySQL database at http://bluesql.net, but when I try to connect, it gives this error: Connect Error (2000) mysqlnd cannot connect to MySQL 4.1+ using old authentication I've looked into this, and it has to do with some…
B T
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How do I shutdown a Node.js http(s) server immediately?

I have a Node.js application that contains an http(s) server. In a specific case, I need to shutdown this server programmatically. What I am currently doing is calling its close() function, but this does not help, as it waits for any kept alive…
Golo Roden
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Hibernate Slow to Acquire Postgres Connection

I'm having a really difficult time debugging this problem. Whenever I try to establish a connection with postgres, it takes a whole minute. After the connection is established, everything is fine. I've tried disabling all the mappings and not…
Jason Huntley
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Is it safe to use a static java.sql.Connection instance in a multithreaded system?

I'm running a web application on Tomcat. I have a class that handles all DB queries. This class contains the Connection object and methods that returns query results. This is the connection object: private static Connection conn = null; It has only…
Asher Saban
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How to increase the timeout for `yarn install`

I'm currently using Yarn on a very unstable internet connection. Sometimes it takes hours until I can finally download all the packages. I noticed Yarn retries the download when there is some kind of the internet connection: [1/4] Resolving…
Fabio K
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What is the functionality of setSoTimeout and how it works?

I'm trying to learn Socket and I'm confused by following text from Oracle's website: setSoTimeout public void setSoTimeout(int timeout) throws SocketException Enable/disable SO_TIMEOUT with the specified timeout, in milliseconds. With this option…
Bernard
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