connection

Socket single client/server connection, server can send multiple times, client can only once

由 前提是你 提交于 2019-12-06 16:13:36
问题 I have written a client and server application that I need to use to connect a checkers game I made in C#. I have got the client and server to connect and the server can repeatedly send the client messages to update a label but when the client tries to send a message it throws the error "A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied." Here is my client and server so far.

The Better Way of Determining Internet Connectivity

由 折月煮酒 提交于 2019-12-06 16:10:48
问题 Originally a question about why a web view was failing when a broadcastReceiver said the device was connected to the internet: WebView Fails w/ Good Connection This lead to two answers, a technically correct and a workaround. However, neither is perfect. My question is: What is the better way of determining a valid internt connect? (1) public static boolean isConnectedToInternet() { ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);

Using Javascript to connect SQL Server database

由 ∥☆過路亽．° 提交于 2019-12-06 16:04:29
I need to use Javascript to read some data from SQl Server 2008 Database. So I wrote this:(html page code) <!DOCTYPE html "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <title>Database Connect</title> <script type="text/javascript"> function loadDB(){ var connection = new ActiveXObject("ADODB.Connection"); var connectionstring="Data Source=ИЛЬЯ-ПК;Initial Catalog=C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA

PHP/MySQL: Create new connection for each query?

由 隐身守侯 提交于 2019-12-06 16:01:10
问题 I have a webpage with some mysql querys, I must start new db connection and db close after every query or its more efficiently start an only one db connection at the top of the code and close at the bottom of the script? Thanks! 回答1: Never create a new connection for every query; it's very wasteful and will overburden your MySQL server. Creating one connection at the top of your script is enough - all subsequent queries will use that connection until the end of the page. You can even use that

Keep WiFi Connection active even iPad is going into sleep mode/locked in iOS 5

由 自作多情 提交于 2019-12-06 15:47:55
I know that on iOS 4 , the Wi-Fi connection used to be persistent, so going into sleep mode/locked kept the connection ON . This was modified in the next version iOS 5 to improve battery life. In iOS 5 , requiring the device to be plugged into a power source in order to have a persistent Wi-Fi connection. Wi-Fi connection is disconnecting automatically after iPad is going into sleep mode/locked . Here comes my problem, I'm sending a bulk chunk of data through WiFi which may take too much time. So the user have to wait up to the transaction complete. iPad may switch into sleep mode/locked while

PHP Connection: Close

由 一笑奈何 提交于 2019-12-06 15:21:11
I have a PHP application that I have been having some problems with, some pages take a very long time to load. After a couple of hours I have figured out the problem, but I have no idea how to fix it. The problem seems to be with the header Connection: keep-alive . I used a Firefox plugin called "Tamper Data" which allows you to "tamper" with the headers and stuff. Once I used that tool to change the connection header to Connection: close the delay on some pages stopped. How, in PHP, can I make sure that the Connection: close header is used? I tried putting header("Connection: close"); at the

GWT JDBC LDAP connection fails

由 女生的网名这么多〃 提交于 2019-12-06 15:16:23
问题 I am trying to connect my GWT application to an ldap server using jdbc, but could not make it work so far. Here is a code sample of my attempt to connect to it: String ldapConnectString = "jdbc:ldap://SERVERIP:389/dc=SERVERNAME,dc=office,dc=COMPANY,dc=com?SEARCH_SCOPE:=subTreeScope"; java.sql.Connection con; try { con = DriverManager.getConnection(ldapConnectString,"cn=USERNAME","PASSWORD"); } catch (SQLException e) { System.out.println("An error has ocurred!!! Connection failed"); e

Apache Ftp server integration with Android

由 …衆ロ難τιáo~ 提交于 2019-12-06 14:49:57
问题 I am working on integrating Apache FTP server to my Android app. Follow the instructions here ( Embedding FtpServer in 5 minutes): http://mina.apache.org/ftpserver-project/embedding_ftpserver.html. However, with all the codes included and the jar files imported to my android project, I got two major errors: 1. App crash upon ftp server start claiming class not found 2. Dalvik error 1 Tried every method by researching all related problems and the solution is to keep the minimal subset of the

How to send data in jsoup connection?

由 无人久伴 提交于 2019-12-06 13:34:00
问题 I need to send data in jsoup connection request. This is the Form Data that I can see in chrome developer console. {"method":"Catalog.search","params":{"pag":1,"business_url":"electrodomesticos","category_url":"climatizacion","subcategory_url":"","valmin":-1,"valmax":-1}} This is my code for doing this String phpUrl = "url of .php"; Connection conn = Jsoup.connect(phpUrl).userAgent("Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36")

Android 4.3: How to connect to multiple Bluetooth Low Energy devices?

由 爷，独闯天下 提交于 2019-12-06 12:47:42
问题 Task: I am developing an Android application that will need to simultaneously connect to multiple (identical, that can be differentiated via their ID) BLE chip devices in order to send and receive updates. I have used the tutorials on Google's official web page: http://developer.android.com/guide/topics/connectivity/bluetooth-le.html This has helped me to create a DeviceScanActivity Java class that allows me to scan for and list all of the available BLE devices in close proximity, similarly
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