connection

问题 I'm trying to build a video-chat with a WebRTC. The problem which I have, is that the video-offer is going in both sides like: PC1 -> send video-offer PC2 <- handle video-offer message PC2 -> send video-answer PC1 <- handle video-answer (when there is debugger breakpoint, the connection is working) PC2 -> send video-offer ... I'm sending video-offer message only in negotiationEventHandler: function handleNegotiationNeededEvent() { logMessage('HandleNegotiationNeededEvent fired!');

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Android SDK Manager gives “Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml” error when selecting repository In trying to set up the Android SDK, I can't seem to get connected to the repository. With the proxy set correctly, and https forced to http, I get this error: Failed to fetch URL http://dl-ssl.google.com/android/repository/repository.xml, reason: Connection reset . Without

问题 I have a workbook with some sheets that I am exporting to excel via VBA Script.One of the sheets i am exporting has a DB connection to pull in values for that reporting period. When I export to excel, I notice that the connection to the DB still exists. Is there a snippet of code I can use to export the values in the sheet but remove the DB Connection? Below is the script I am currently using to export a report daily. Thank you! Sub refreshsummary() ' refreshsummary Macro Dim strdate As

问题 is there any way to use msaccess file on android application 回答1: I do not believe there is any way to use a MS Access database with an Android application. Instead, you should probably consider using another database such as SQLite. You could migrate your Access database to SQLite: Export your Access database into text files, semicolon or comma delimited. Open the SQLite database browser and chose File -> Import -> Table from csv file. Browse for your text file and choose the appropriate

问题 I need to build a utility class to test the connection to HDFS. The test should display the sever side version of HDFS and any other metadata. Although, there are lot of client demos available but nothing on extracting the server metadata. Could anybody help? Please note that my client is a remote java client and dont have the hadoop and HDFS config files to initialise the configuration. I need to do it by connecting to the HDFS name node service using its URL on the fly. 回答1: Hadoop exposes

问题 I have a problem on android studio when I try to make a connection to a mysql database This is the code: public Connection getMySqlConnection() { /* Declare and initialize a sql Connection variable. */ Connection ret = null; try { /* Register for jdbc driver class. */ Class.forName("com.mysql.cj.jdbc.Driver"); /* Create connection url. */ String mysqlConnUrl = "jdbc:mysql://ip/ristorante?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC"; /* db

问题 There is a problem with Cordova-plugin-network-information on Android. Even if there is a 4G connection, sometimes, when I resume the app from the background and I check connection with navigator.connection.type it returns connection.type = NONE, but there is an internet connection. If I close and re-open the app it returns connection.type = 4G. I user cordova@7.1.0 and cordova-android@6.4.0 回答1: This is the workaround I'm currently using for this issue: document.addEventListener("resume",

问题 My application needs to know when the Wifi or the Mobile data has been turned on or off by the user. Actually it shows when the network changes, if the device has connection or not, works fine. but I want to konw when the user is turning on/off the network manually. Right know I have this on my Manifest. <receiver android:name="pe.com.gps.broadcastreceivers.CheckForMobileDataBroadcastReceiver" > <intent-filter> <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/> </intent-filter> <

问题 I have a Tomcat and PostgreSQL installed on a server. I'm having a connection problem trying to connect from my servlet to PostgreSQL database using c3p0 pool. I can reach DB if I'm running Tomcat locally on my laptop. Also I can connect from server to DB using psql (i.e. command line sql utility). But when I'm trying to deploy my servlet to server and establish a connection I'm getting the following error: java.sql.SQLException: Connections could not be acquired from the underlying database!

问题 I'm working on application which needs to connect to another database to get some data, and to do that, I decided to use SqlConnection, reader etc.. And I need to execute few queries, for example first I need to get CARD ID for some user, after that I need to get some data by that CARD ID.. Here is my code: #region Connection to another Database SqlConnection sqlConnection1 = new SqlConnection("Data Source=ComputerOne; Initial Catalog=TestDatabase;Integrated Security=False; User ID=test;