https://curl.se/libcurl/c/maxconnects.html
libcurl example - maxconnects.c
libcurlexample
https://curl.se/mail/lib-2004-10/0227.html
Curl: CURLOPT_MAXCONNECTS and SSL session ID cache
curlsslsessionidcache
https://curl.se/libcurl/c/CURLOPT_MAXCONNECTS.html
CURLOPT_MAXCONNECTS