s and I have to send some requests to the server. I am currently using libcurl.
However there is a limitation when proxy server with authentication is involved
before the request sent out to the server.
I explored the options in libcurl but i could not able to make it work. If i
hardcode the username / password it works. But I do not want to get the user
name and password by my application; I would prefer that libcurl can requests
these at the start of a transfer.
Is there a different library i can use like winhttp or libcurl is the best one
to use?
Below are the curl settings done before making the request
curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_URL, urlString.data());
curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_WRITEFUNCTION,
receiveDataCallback); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_WRITEDATA, &curlPerformStorage); curlResultCode =
curl_easy_setopt(curlHandle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_FOLLOWLOCATION, 1);
if(NULL != GetWindowsProxyConfig().lpszProxy){ LPWSTR wStr =
GetWindowsProxyConfig().lpszProxy; char* buffer = new char[100];
wcstombs(buffer, wStr, 100) ; curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROXY, "<proxy_name>"); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROXYPORT, <number>); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_HTTPAUTH, CURLAUTH_NONE); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROXYAUTH, CURLAUTH_BASIC); } else { curlResultCode =
curl_easy_setopt(curlHandle, CURLOPT_PROXY,
"<proxy_name>"); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROXYPORT, <number>); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_HTTPAUTH, CURLAUTH_NTLM); curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROXYAUTH, CURLAUTH_NTLM); } curlResultCode =
curl_easy_setopt(curlHandle, CURLOPT_USE_SSL, CURLUSESSL_ALL); curlResultCode =
curl_easy_setopt(curlHandle, CURLOPT_SSL_VERIFYPEER, 1); curlResultCode =
curl_easy_setopt(curlHandle, CURLOPT_SSL_VERIFYHOST, 2); if(proxyStr.length() >
0){ curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_HTTPPROXYTUNNEL, 1L);
} curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_FAILONERROR, 1);
curlResultCode= curl_easy_setopt ( curlHandle, CURLOPT_ERRORBUFFER, errorbuffer
);
int nConnectionTimeout = curlPerformStorage.GetConnectionTim eOut(); if
(nConnectionTimeout > 0) { curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_CONNECTTIMEOUT, nConnectionTimeout); } int nTransferTimeout =
curlPerformStorage.GetTransferTimeO ut(); if (nTransferTimeout > 0) {
curlResultCode=curl_easy_setopt(cur lHandle, CURLOPT_TIMEOUT,
nTransferTimeout); } curlResultCode = curl_easy_setopt(curlHandle,
CURLOPT_PROGRESSFUNCTION , ProgressCallback); if (curlResultCode == CURLE_OK) {
curlResultCode = curl_easy_setopt(curlHandle, CURLOPT_NOPROGRESS, FALSE);
curlResultCode= curl_easy_setopt(curlHandle, CURLOPT_PROGRESSDATA ,
&curlPerformStorage); } curlResultCode = curl_easy_perform(curlHandle); if
(curlResultCode != CURLE_OK) { } else {
} curl_easy_reset(curlHandle); return curlResultCode;
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