Proxy Checker in C


 
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Old 10-23-2007
Proxy Checker in C

Hello Everyone

Im planning to make a C program to check a proxy server if it is working or bot, test the proxy speed ,response time , as well as a proxy type.
i'm learning using libcurl right now to fetch http headers. do you guys have some links about how to check proxy headers?. Thank you.

Sorry for my noobness.
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CURLOPT_HEADEROPT(3)					     curl_easy_setopt options					      CURLOPT_HEADEROPT(3)

NAME
CURLOPT_HEADEROPT - set how to send HTTP headers SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADEROPT, long bitmask); DESCRIPTION
Pass a long that is a bitmask of options of how to deal with headers. The two mutually exclusive options are: CURLHEADER_UNIFIED - the headers specified in CURLOPT_HTTPHEADER(3) will be used in requests both to servers and proxies. With this option enabled, CURLOPT_PROXYHEADER(3) will not have any effect. CURLHEADER_SEPARATE - makes CURLOPT_HTTPHEADER(3) headers only get sent to a server and not to a proxy. Proxy headers must be set with CUR- LOPT_PROXYHEADER(3) to get used. Note that if a non-CONNECT request is sent to a proxy, libcurl will send both server headers and proxy headers. When doing CONNECT, libcurl will send CURLOPT_PROXYHEADER(3) headers only to the proxy and then CURLOPT_HTTPHEADER(3) headers only to the server. DEFAULT
CURLHEADER_SEPARATE (changed in 7.42.1, ased CURLHEADER_UNIFIED before then) PROTOCOLS
HTTP EXAMPLE
TODO AVAILABILITY
Added in 7.37.0 RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO
CURLOPT_HTTPHEADER(3), CURLOPT_PROXYHEADER(3), libcurl 7.54.0 February 03, 2016 CURLOPT_HEADEROPT(3)