Get url HEADers.
Get url HEADers.
HEAD(url = NULL, config = list(), ..., handle = NULL)
url |
the url of the page to retrieve |
config |
Additional configuration settings such as http
authentication ( |
... |
Further named parameters, such as |
handle |
The handle to use with this request. If not
supplied, will be retrieved and reused from the |
A response() object.
The HEAD method is identical to GET except that the server MUST NOT return a message-body in the response. The metainformation contained in the HTTP headers in response to a HEAD request SHOULD be identical to the information sent in response to a GET request. This method can be used for obtaining metainformation about the entity implied by the request without transferring the entity-body itself. This method is often used for testing hypertext links for validity, accessibility, and recent modification.
The response to a HEAD request MAY be cacheable in the sense that the information contained in the response MAY be used to update a previously cached entity from that resource. If the new field values indicate that the cached entity differs from the current entity (as would be indicated by a change in Content-Length, Content-MD5, ETag or Last-Modified), then the cache MUST treat the cache entry as stale.
HEAD("http://google.com")
headers(HEAD("http://google.com"))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.