View source: R/safedata_network.R
try_to_download | R Documentation |
This function tries to fetch a resource from a URL and handles failure to resolve the resource (bad URLs), timeouts and then actual HTTP error codes.
try_to_download(url, local_path = NULL, timeout = 10)
url |
The URL to download. |
local_path |
A path to a file in which to save the URL content. |
timeout |
The waiting time in seconds before a request should timeout. |
If the download fails, the function returns FALSE and the return value
attribute 'fail_msg' is used to provide details. Otherwise, an
response
object is returned containing the resource. If a
local path is provided, the resource is downloaded to that path and the
function returns TRUE to indicate success.
An response
object or a boolean showing if the
download attempt was successful.
This function contains code to simulate network failures of varying kinds (no network, no API, specific resource unavailable) for use in unit testing.
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