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Full Discussion: Setting X-Forwarded-For In C
Top Forums Programming Setting X-Forwarded-For In C Post 302980264 by Corona688 on Thursday 25th of August 2016 01:25:34 PM
Old 08-25-2016
There's no "native" one-liners for HTTP in C. C doesn't handle files natively, let alone HTTP. This lack of dependencies is why you can write kernels in it -- and write entire languages like ruby, python, perl, and pretty much everything you run on your computer -- but it means you have to write out what you want long-form, or install a library.

There's definitely C libraries for it, in fact you've already heard of one -- curl. Here's some source code examples for it.
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CURLOPT_MAXREDIRS(3)					     curl_easy_setopt options					      CURLOPT_MAXREDIRS(3)

NAME
CURLOPT_MAXREDIRS - maximum number of redirects allowed SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXREDIRS, long amount); DESCRIPTION
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. DEFAULT
-1, unlimited PROTOCOLS
HTTP(S) EXAMPLE
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); } AVAILABILITY
Along with HTTP RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO
CURLOPT_FOLLOWLOCATION(3), libcurl 7.54.0 February 03, 2016 CURLOPT_MAXREDIRS(3)
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