Can't remove just one Set-Cookie header in HAProxy 2.2 - haproxy

Question

A response from our web server might set a few cookies:
Set-Cookie: JSESSIONID=123;Secure
Set-Cookie: JSESSIONIDSSO=234;Secure
In HAProxy, we want to remove one of these. With 1.7, we could do:
rspidel ^Set-Cookie:\ JSESSIONIDSSO=
But we are upgrading to HAProxy 2.2, where rspidel has been removed. The replacement (http-response del-header) does not handle regex. How can I remove just the one Set-Cookie header?

Answer 1

Response edited because I misunderstood the question
I believe you are looking for http-response replace-header
http-response replace-header <name> <regex-match> <replace-fmt>
[ { if | unless } <condition> ]
This works like "http-request replace-header" except that it works on the
server's response instead of the client's request.
Example:
http-response replace-header Set-Cookie (C=[^;]*);(.*) \1;ip=%bi;\2
# applied to:
Set-Cookie: C=1; expires=Tue, 14-Jun-2016 01:40:45 GMT
# outputs:
Set-Cookie: C=1;ip=192.168.1.20; expires=Tue, 14-Jun-2016 01:40:45 GMT
# assuming the backend IP is 192.168.1.20.
Documentation here
You can possibly do something like this:
http-response replace-header Set-Cookie (JSESSIONIDSSO=.*) \2
Although, that would leave you with an empty Set-Cookie header.
Another option, would be to replace the value JSESSIONIDSSO with something else. i.e.
http-response replace-header Set-Cookie (JSESSIONIDSSO=[^;]*);(.*) None=None;\2