url_accessible: Test if a URL is accessible

In xfun: Supporting Functions for Packages Maintained by 'Yihui Xie'

Test if a URL is accessible

Description

Try to send a HEAD request to a URL using curlGetHeaders() or the curl package, and see if it returns a successful status code.

Usage

url_accessible(x, use_curl = !capabilities("libcurl"), ...)

Arguments

x	A URL as a character string.
use_curl	Whether to use the curl package or the curlGetHeaders() function in base R to send the request to the URL. By default, curl will be used when base R does not have the libcurl capability (which should be rare).
...	Arguments to be passed to curlGetHeaders().

Value

TRUE or FALSE.

Examples

xfun::url_accessible("https://yihui.org")

xfun documentation built on Nov. 2, 2023, 6 p.m.