A verbose connection provides much more information about the flow of information between the client and server.
Arguments
- data_out
Show data sent to the server.
- data_in
Show data recieved from the server.
- info
Show informational text from curl. This is mainly useful for debugging https and auth problems, so is disabled by default.
- ssl
Show even data sent/recieved over SSL connections?
Prefixes
verbose() uses the following prefixes to distinguish between
different components of the http messages:
*informative curl messages->headers sent (out)>>data sent (out)*>ssl data sent (out)<-headers received (in)<<data received (in)<*ssl data received (in)
See also
with_verbose() makes it easier to use verbose mode
even when the requests are buried inside another function call.
Other config:
add_headers(),
authenticate(),
config(),
set_cookies(),
timeout(),
use_proxy(),
user_agent()
Examples
if (FALSE) {
GET("http://httpbin.org", verbose())
GET("http://httpbin.org", verbose(info = TRUE))
f <- function() {
GET("http://httpbin.org")
}
with_verbose(f())
with_verbose(f(), info = TRUE)
# verbose() makes it easy to see exactly what POST requests send
POST_verbose <- function(body, ...) {
POST("https://httpbin.org/post", body = body, verbose(), ...)
invisible()
}
POST_verbose(list(x = "a", y = "b"))
POST_verbose(list(x = "a", y = "b"), encode = "form")
POST_verbose(FALSE)
POST_verbose(NULL)
POST_verbose("")
POST_verbose("xyz")
}