1.20 SRV and URI DNS records
1.21 API for URL parsing/splitting
1.23 Offer API to flush the connection pool
+ 1.24 TCP Fast Open for windows
2. libcurl - multi interface
2.1 More non-blocking
An API could allow a forced flush or just a forced loop that would properly
close all connections that have been closed by the server already.
+1.24 TCP Fast Open for windows
+
+ libcurl supports the CURLOPT_TCP_FASTOPEN option since 7.49.0 for Linux and
+ Mac OS. Windows supports TCP Fast Open starting with Windows 10, version 1607
+ and we should add support for it.
+
2. libcurl - multi interface