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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to implement eclipse.paho in my project to connect Mqtt Broker (Both subscribing and publishing purpose). The problem is, when I using the subscribing feature (Implementing MqttCallback interface), I couldn't figure our how can I reconnect if the connection lost. MqttCallback interface has a connectionLost method, but it is useful for the debug what causes the connection lost. I searched but couldn't find a way to establish auto reconnect. Can you suggest a way or document about this problem? Thanks in advanced. 回答1: The best way

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: It sometimes takes a second or more to connect to my SignalR server from the browser - even when running locally. I thought websockets were supposd to be fast! 回答1: There is a configuration option to tell SignalR JS client to wait until the page load event is complete before sending anything. Just set waitForPageLoad: false in the startup options to prevent this happening. Of course you must make sure that anything you do in the callback can be executed safely if the page isn't loaded. Anything like a YouTube video not loading can delay the

I have a set up of 4 containers that need to talk to each other and two of those need to connect to an external database. I started working with composer and link everything together. The containers are able to talk with each other without many issues, however they can't connect to the external database. The external DB is up and running and I can easily connect to it via shell. The docker-compose file looks like this: version: "3" services: bridge: # version => 2.1.4 build: ./lora-gateway-bridge ports: - "1680/udp:1700/udp" links: - emqtt - redis environment: - MQTT_SERVER=tcp://emqtt:1883

I have a chain of "route specific middleware" for this route, like so: var express = require('express'); var server = express(); var mw1 = function(req, resp, next) { //do stuff if (success) { next(); } else { req.connection.destroy(); //without calling next() } }; var mw2 = function(req, resp, next) { //do stuff if (success) { next(); } else { req.connection.destroy(); //without calling next() } }; server.post('/some/path', [mw1, mw2], function(req, resp) { //write response }); [mw1, mw2] are the middleware specific to the route /some/path . This is different from server-wide middleware like

My original code passed a QStringList from the signal to the slot and then returned a QList. Everything worked fine but I needed to change both the QStringList and QList into 2 different subclassed QObjects. Since then I have been receiving errors like "synthesized method first required here" or it simply crashes without any error message. I understand that qt copies all arguments passed in a queued connection and a qobject cannot be copied. So instead of returning a qobject I thought I would create both qobjects prior to emitting the signal. Then I would pass references to each object, modify

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Can I dump logs from an android phone over wifi (using tcp/ip) using adb? adb connect can be used, but it needs some server to be running on the phone (at 5555 port). How do I start this server? Or the only way to get logs from a phone is by connecting it as a USB device? 回答1: Install adbWireless on your phone. Run the application and click on the big button (you cannot miss it!). It will activate ADB over Wifi and display the URL to use to connect to it with the adb command. On your computer, run the adb command with the connect parameter.

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I would like to connect with my local MYSQL data base, which is installed along with XAMP server. I created a new User ie, " NewUser " and its password is "password". I given all PRIVILEGES to this user. I write the code to connect with data base by using user "root" (No password for this user). Its connected . Like bellow.. return DriverManager.getConnection("jdbc:MySql://localhost/database_name","root",""); Now I wrote the code to connect with same data base by another user ie, "NewUser" and its pasword "password" return DriverManager

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: new iOS 6 feature is, that you can debug html and javascript running on device or simulator in desktop safari. I suppose, that this feature is based on Webkit Remote Debugging Protocol . How can I connect to webkit running on iPhone without desktop Safari? I can do this for mobile Chrome running on Android using websockets, but how can I do that for iOS devices? 回答1: The ios-webkit-debug-proxy project (from Google!) does this. 回答2: You want to look at this code https://github.com/leftlogic/remote-debug/tree/master/safari - although it fails

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've seen numerous answers to similar questions like this one. I haven't seen on the web many people have asked the seemingly simple question "How do I connect Access 2007 to an SQL server 2008 database" - but all of the answers describe how you can migrate from access 2007 to an sql server 2008 database, or they describe how to connect access 2007 to an sql server 2005 database. I can't find any simple solution to my problem (and probably this is a problem for many others). Here is the question (sorry for the over emphasis): How do I