c++ - what is the best library to send http request for desktop applications -

my application running in windows , have send requests server. using libcurl.

however there limitation when proxy server authentication involved before request sent out server.

i explored options in libcurl not able make work. if hardcode username / password works. not want user name , password application; prefer libcurl can requests these @ start of transfer.

is there different library can use winhttp or libcurl best 1 use?

below curl settings done before making 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.getconnectiontimeout(); if (nconnectiontimeout > 0) {     curlresultcode = curl_easy_setopt(curlhandle, curlopt_connecttimeout, nconnectiontimeout); } int ntransfertimeout = curlperformstorage.gettransfertimeout(); if (ntransfertimeout > 0) {     curlresultcode=curl_easy_setopt(curlhandle, 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; 

i have implemented proxy usages libcurl, possible , cross platform solutions.

having said that, on windows best bet stick windows comm stacks, easier manipulate on windows, , easier work proxies (many times getting config machine definitions automatically.

on windows toss between winhttp , wininet.

• wininet considered easier , more high level, suitable clients access mostly. example popup box asking proxy username , password automatically.
• winhttp considered low level , more suitable complex servers running multithreaded need lot of control on conneciton.

90% of time can use wininet

here complete compare between two: microsoft compare of winhttp , wininet