How to avoid "Connection timed out" when device screen goes blank?

Question

Android

Implemented a download manager based on HttpURLConnection in the program. Everything shakes, but the problem is the screen going out. On some devices it throws an error in this case:
java.net.SocketException: recvfrom failed: ETIMEDOUT (Connection timed out)
What are the ways to solve this problem? Make the screen not turn off during the download or are there any other solutions?

Answer 1

The device goes into suspend and tries to "lull" everything superfluous, including the network.
Android has a mechanism called "partial wakelock".
Keeping the Device Awake
WakeLock
WakefulBroadcastReceiver
DownloadManager

Answer 2

there are applications that do not allow the processor to sleep (more precisely, they switch it to the hard mode). look on the Internet for such programs. one of them is in the market, called device ( https://play.google.com/store/apps/details?id=org.... There you need to change the mode of the processor (how to do this and what they are can be found in web)