Wikipedia:Reference desk/Archives/Computing/2017 March 7

= March 7 =

Do browsers use multiple connections in parallel when connecting to a website using HTTPS?
Browsers generally can use multiple parallel HTTP connections to the same website to speed up retrieval. Do they do the same thing when they are using HTTPS? (Multiple connections are more expensive when using HTTPS because of the overhead of TLS handshakes.) --134.242.92.97 (talk) 16:18, 7 March 2017 (UTC)
 * Surely, but there are some problems with it. Ruslik_ Zero 20:02, 7 March 2017 (UTC)

Alert button app
I want a Windows PC app that has the following properties. The first property is essential, whilst at least one of the latter two is required. The second matters, but I believe that said behaviour can be configured easily enough (am I wrong?). Does anyone know of such an app? I need it for delivering presentation to noisy rooms as a means of attracting attention.--Leon (talk) 19:45, 7 March 2017 (UTC)
 * Displays a button that can be pressed with the mouse.
 * Stays on top of other windows.
 * Makes an audible alert when pressed.
 * Makes a visual alert when pressed.


 * This is a very simple program to write. What language do you want to use? I just taught a VB class last week. You can drop a button in a form (very easy). Use Form.topmost=true to make the form stay above all other forms. Then, go into the onclick function for the button and add my.computer.audio.start to start a sound file - presumably a short alert sound. Making the entire screen flash is possible with a second form that is fullscreen. Display the form. Wait a second. Hide the form. This could all be done in any of the variants of C or Java as well. 209.149.113.5 (talk) 20:07, 7 March 2017 (UTC)


 * There are a vast number of web pages that play a sound effect when you press a button. Google "beep button" and you'll find a bunch of them.  CodeTalker (talk) 23:20, 7 March 2017 (UTC)