In headless mode, Chrome defaults to disallowing file downloads.
However, recently they added an option to DevTools to enable this behavior:
https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-setDownloadBehavior
Using Selenium with ChromeDriver in Python, how do I allow file downloads?
Here's the chromedriver ticket to add support for headless file downloads: https://bugs.chromium.org/p/chromedriver/issues/detail?id=1973
File downloading is disabled when using current version of headless Chrome (#60). Support to enable downloading is added to version # 62, which is currently in Dev channel. Need ChromeDriver to support this feature too.
It also references https://bugs.chromium.org/p/chromium/issues/detail?id=696481 which has reproduction steps for the issue:
Chrome Version : Chromium 58.0.3023.0
What steps will reproduce the problem? (1) Set headless mode (--headless) on command-line (2) Point URL to downloadable file (3) Nothing happens
What is the expected result?
When launching in headless mode and pointing to an URL with a downloadable file, file should be downloaded and saved in "Downloads" folder.
What happens instead?
Nothing happens, file doesn't get downloaded.
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