4.7 STAT for LIST without data connection
5. HTTP
+ 5.1 Provide the error body from a CONNNECT response
5.2 Set custom client ip when using haproxy protocol
5.3 Rearrange request header order
5.4 Allow SAN names in HTTP/2 server push
5. HTTP
+5.1 Provide the error body from a CONNNECT response
+
+ When curl receives a body response from a CONNECT request to a proxy, it will
+ always just read and ignore it. It would make some users happy if curl
+ instead optionally would be able to make that responsible available. Via a new
+ callback? Through some other means?
+
+ See https://github.com/curl/curl/issues/9513
+
5.2 Set custom client ip when using haproxy protocol
This would allow testing servers with different client ip addresses (without