On Tue, 1 Sep 2020, Jeffrey McKay via curl-library wrote:
In my program, I can connect to my test server (outlook.office365.com), and
if I use port 143, the insecure IMAP port, I can receive the response. But
if I use secure port 993, the program hangs on the select() command, timing
out after 60 seconds.
If you want TLS already in the connect procedure, you need to use a URL that
says so. Your code:
strcpy_s(imap_host, "outlook.office365.com");
curl_easy_setopt(curl, CURLOPT_URL, imap_host);
... uses no protocol scheme at all which will make curl guess, and in this
case it thinks it is "http" - in clear text. It won't try to do any TLS
negotiation on a clear text connection.
--
/ daniel.haxx.se | Commercial curl support up to 24x7 is available!
| Private help, bug fixes, support, ports, new features
| https://www.wolfssl.com/contact/
-------------------------------------------------------------------
Unsubscribe: https://cool.haxx.se/list/listinfo/curl-library
Etiquette: https://curl.haxx.se/mail/etiquette.html
