Daniel et all,

I'm using libcurl 7.22.0, but something troubles me.
I'v written the following codes in hope of making a HTTP request through a HTTP proxy (hosted by CCProxy: www.ccproxy.com/).

void ConfigProxy(CURL *easy_handle, const Proxy& proxy)
{
        if (proxy.type == ProxyNone)
                return;

        curl_easy_setopt(easy_handle, CURLOPT_PROXYTYPE, proxy.type);
        curl_easy_setopt(easy_handle, CURLOPT_PROXY, proxy.host.c_str());
        curl_easy_setopt(easy_handle, CURLOPT_PROXYPORT, proxy.port);

        if (!proxy.user.empty())
        {
                curl_easy_setopt(easy_handle, CURLOPT_PROXYUSERNAME, proxy.user.c_str());
                if (!proxy.pass.empty())
                        curl_easy_setopt(easy_handle, CURLOPT_PROXYPASSWORD, proxy.pass.c_str());
        }
}

void MyCurl::DoRequest()
{
#ifndef NDEBUG
        curl_easy_setopt(easy_handle_, CURLOPT_VERBOSE, 1);
#endif

        curl_easy_setopt(easy_handle_, CURLOPT_ERRORBUFFER, error_buffer_);
        curl_easy_setopt(easy_handle_, CURLOPT_URL, url_.c_str());
        curl_easy_setopt(easy_handle_, CURLOPT_HTTPHEADER, header_list_);
        curl_easy_setopt(easy_handle_, CURLOPT_FOLLOWLOCATION, 1);
        curl_easy_setopt(easy_handle_, CURLOPT_COOKIEFILE, ""); // enable cookie

        if (!post_)
                curl_easy_setopt(easy_handle_, CURLOPT_POST, 0);
        else
        {
                curl_easy_setopt(easy_handle_, CURLOPT_POST, 1);
                if (form_post_ != NULL)
                {
                        curl_easy_setopt(easy_handle_, CURLOPT_HTTPPOST, form_post_);
                        // we have some files to upload
                        if (!upload_file_handles_.empty())
                                curl_easy_setopt(easy_handle_, CURLOPT_READFUNCTION, ReadOSFile);
                }
        }

        ConfigProxy(easy_handle_, proxy_);

        ....... perform operations here .........
}

But, it does not work as i expected. It sends "GET some_url HTTP/1.1" instead of "CONNECT some_host HTTP/1.1".

libcurl sent:

GET http://www.google.com HTTP/1.1
Proxy-Authorization: Basic password_in_base64
User-Agent: curl/7.22.0 (i386-pc-win32) libcurl/7.22.0
Host: 163.com
Accept: */*
Proxy-Connection: Keep-Alive

rather than:

CONNECT 192.168.144.4:443 HTTP/1.1
Proxy-Authorization: Basic password_in_base64
Proxy-Connection: Keep-Alive
Accept: */*
Content-Type: text/html
Content-length: 0

And then, Google's sorry page is recieved, because CCProxy forwards my request as:

GET HTTP/1.1
Host: www.google.com
Accept: */*
Connection: Keep-Alive
User-Agent: curl/7.22.0 (i386-pc-win32) libcurl/7.22.0

How can i solve this problem? Please help me.

Btw, if i don't use proxy, it works well.

Best regards,
Kenneth
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Received on 2012-04-27