Finally I made it. It took two days but that's not terribly bad for someone who knows zero about Internet SW and protocols.
I feel I owe a summary. Comments in the code are explanatory. Essentially, I now can access to the site with an automated libcurl login. Thanks everyone for all hints, directions and for the time spent replying. ======================================================= // Login Page const string LoginPage = "https://us.etrade.com/e/t/user/login";; // Where the POST string must go const string Login_fcc = "https://us.etrade.com/login.fcc";; const string stPostLogin = "USER=myUSRid&PASSWORD=myPASSwd&TARGET=%2Fe%2Ft%2Fpfm%2Fportfolioview&Logon.x=0&Logon.y=0"; // Not necessary, but it does not hurt: curl_easy_setopt(sessionA, CURLOPT_USERAGENT, UserAgent.c_str()); // Essential! In the Header there is a Location: to follow: curl_easy_setopt(sessionA, CURLOPT_FOLLOWLOCATION, 1); // Regular stuff: curl_easy_setopt(sessionA, CURLOPT_COOKIEJAR, CookiesBag); curl_easy_setopt(sessionA, CURLOPT_COOKIEFILE, CookiesBag); curl_easy_setopt(sessionA, CURLOPT_WRITEHEADER, HeaderFile); // These are NOT necessary at all! // All works 100% fine without them. Any reason why I should keep this? curl_easy_setopt(sessionA, CURLOPT_AUTOREFERER, 1); curl_easy_setopt(sessionA, CURLOPT_REFERER, LoginPage.c_str()); // This is only for "visiting" the Login page and collecting the // necessary cookies prior to POST curl_easy_setopt(sessionA, CURLOPT_URL, LoginPage.c_str()); result = curl_easy_perform(sessionA); // POST must go to a different page: login.fcc curl_easy_setopt(sessionA, CURLOPT_POSTFIELDS, stPostLogin.c_str()); result = curl_easy_perform(sessionA); // then posting
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