Running examples in 'crul-Ex.R' failed
The error most likely occurred in:

> ### Name: proxies
> ### Title: proxy options
> ### Aliases: proxies proxy
> 
> ### ** Examples
> 
> proxy("http://97.77.104.22:3128")
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyauth
[1] 1

attr(,"class")
[1] "proxy"
> proxy("97.77.104.22:3128")
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyauth
[1] 1

attr(,"class")
[1] "proxy"
> proxy("http://97.77.104.22:3128", "foo", "bar")
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyuserpwd
[1] "foo:bar"

$proxyauth
[1] 1

attr(,"class")
[1] "proxy"
> proxy("http://97.77.104.22:3128", "foo", "bar", auth = "digest")
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyuserpwd
[1] "foo:bar"

$proxyauth
[1] 2

attr(,"class")
[1] "proxy"
> proxy("http://97.77.104.22:3128", "foo", "bar", auth = "ntlm")
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyuserpwd
[1] "foo:bar"

$proxyauth
[1] 8

attr(,"class")
[1] "proxy"
> 
> # with proxy (look at request/outgoing headers)
> (res <- HttpClient$new(
+   url = "http://www.google.com",
+   proxies = proxy("http://97.77.104.22:3128")
+ ))
<crul connection> 
  url: http://www.google.com
  curl options: 
  proxies: 
    - http://97.77.104.22:3128 (auth: FALSE)
  headers: 
> res$proxies
$proxy
[1] "97.77.104.22"

$proxyport
[1] 3128

$proxyauth
[1] 1

attr(,"class")
[1] "proxy"
> ## Not run: res$get(verbose = TRUE)
> 
> # vs. without proxy (look at request/outgoing headers)
> (res2 <- HttpClient$new(url = "http://www.google.com"))
<crul connection> 
  url: http://www.google.com
  curl options: 
  proxies: 
  headers: 
> res2$get(verbose = TRUE)
* Rebuilt URL to: http://www.google.com/
* timeout on name lookup is not supported
*   Trying 172.217.23.164...
* TCP_NODELAY set
* Connected to www.google.com (172.217.23.164) port 80 (#2)
> GET / HTTP/1.1
Host: www.google.com
User-Agent: libcurl/7.51.0 r-curl/2.3 crul/0.3.0
Accept: */*
Accept-Encoding: gzip, deflate

< HTTP/1.1 302 Found
< Cache-Control: private
< Content-Type: text/html; charset=UTF-8
< Location: http://www.google.de/?gfe_rd=cr&ei=O4OoWIbTJ8r08AeT54XIAw
< Content-Length: 258
< Date: Sat, 18 Feb 2017 17:24:11 GMT
< 
* Ignoring the response-body
* Curl_http_done: called premature == 0
* Connection #2 to host www.google.com left intact
* Issue another request to this URL: 'http://www.google.de/?gfe_rd=cr&ei=O4OoWIbTJ8r08AeT54XIAw'
* timeout on name lookup is not supported
*   Trying 172.217.23.163...
* TCP_NODELAY set
*   Trying 2a00:1450:4001:81f::2003...
* TCP_NODELAY set
* After 5000ms connect time, move on!
* connect to 172.217.23.163 port 80 failed: Timed out
* After 2363ms connect time, move on!
* connect to 2a00:1450:4001:81f::2003 port 80 failed: Timed out
* Failed to connect to www.google.de port 80: Timed out
* Closing connection 3
Error in curl::curl_fetch_memory(x$url$url, handle = x$url$handle) : 
  Couldn't connect to server
Calls: <Anonymous> -> <Anonymous> -> crul_fetch -> <Anonymous> -> .Call
Execution halted