1.5 Expect-100 meets 417
1.6 Unnecessary close when 401 received waiting for 100
1.7 CONNECT response larger than 16KB
+ 1.8 DNS timing is wrong for HTTP redirects
2. TLS
2.1 Hangs with PolarSSL
will return prematurely and will confuse the rest of the HTTP protocol
code. This should be very rare.
+1.8 DNS timing is wrong for HTTP redirects
+
+ When extracting timing information after HTTP redirects, only the last
+ transfer's results are returned and not the totals:
+ https://github.com/curl/curl/issues/522
+
2. TLS