OpenGrok

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* Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel (at] haxx.se>, et al.
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* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
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CURLOPT_MAXREDIRS - maximum number of redirects allowed #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXREDIRS, long amount); Pass a long. The set number will be the redirection limit amount. If that many redirections have been followed, the next redirect will cause an error (CURLE_TOO_MANY_REDIRECTS). This option only makes sense if the CURLOPT_FOLLOWLOCATION(3) is used at the same time. Setting the limit to 0 will make libcurl refuse any redirect. Set it to -1 for an infinite number of redirects. -1, unlimited HTTP(S)

curl = curl_easy_init();
if(curl) {
 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/");

 /* enable redirect following */
 curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);

 /* allow three redirects */
 curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 3L);

 /* Perform the request */
 curl_easy_perform(curl);
}

Along with HTTP Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not. CURLOPT_FOLLOWLOCATION "(3), "