Hi, I have a use-case where I'm trying to delete only specific "Set-Cookie" headers from a response. Since the "Set-Cookie" header can be repeated multiple times, the response might look like:
Set-Cookie: foo1=value1 Set-Cookie: foo2=value2 Set-Cookie: bar=value3 In my case, I'd only like to delete the "Set-Cookie: foo\d+" lines, but keep the "Set-Cookie: bar" line. Is this something that's possible in HAProxy 2? I think this could previously be accomplished with the old "rspidel" option since it operated on matching full header lines. However, I can't figure out any way to accomplish this with the newer "http-response del-header" option since it deletes all headers matching a name without a way to target specific lines based on the value (as far as I can tell). The "http-response replace-header" option can sort of be used to replace the value of these specific header lines based on values, but you can't actually delete the lines. For example, this is basically the same issue that's described here: https://stackoverflow.com/questions/67203673/cant-remove-just-one-set-cookie-header-in-haproxy-2-2 Where a suggestion is to do something like "http-response replace-header Set-Cookie foo\d+ \2" which would result in an empty "Set-Cookie: " header, or "http-response replace-header Set-Cookie foo\d+ bogus-cookie=bogus-value". But those "Set-Cookie" header lines still remain, instead of being deleted entirely. So is this deletion of specific header lines with a specific name and value (while keeping other header lines of the same name) something that's possible? Or is that no longer possible without something like respidel that could match both the header name and value? This might be an uncommon use-case, but I was just trying to figure out if I was missing some other way to accomplish this. Thank you! Nick
