network connection

Check Network Status when developing networked applications for iOS

When developing iOS applications which make use of the network connection you should always first check if there is any network available. If there is not the user should be warned with some kind of pop up or alert. If sending an application which does not check for an existing connection to apple it might get rejected by them. As stated above, when downloading large data it also might be of interest to know if the user uses the cellular or the wifi connection to determine which quality the download should have.

Connect the internet from another PC via network switch

I have network switch to connect my PC and my friends' PC together. By the way, the dormitory provides internet connection by only one device that uses USB port. When we want to connect the internet, we have to plug the USB internet connection provided by the dormitory to one PC and use the internet via network switch. But it does not work. Only the PC that connect to the USB internet connection can connect the internet. How to configure it so that Every PC can connect internet via network switch?
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