How to set timeout for proxy?

There are two settings in Toolbox App's .settings.json file:

• network.connect_timeout is a timeout in milliseconds for low-level network operations;
• network.download_timeout is a timeout in milliseconds for the whole download process, including all redirects and retries.
  
  An example for 5 seconds:

"network": {
   "download_timeout": 5000
},

Settings file locations:

Windows:

%LOCALAPPDATA%\JetBrains\Toolbox\.settings.json

macOS:

~/Library/Application Support/JetBrains/Toolbox/.settings.json

Linux:

~/.local/share/JetBrains/Toolbox/.settings.json