Warning: preg_match(): Unknown modifier '/' in Cookie.php on line 440

[Thinkscape]

Getting those recently:

Warning: preg_match(): Unknown modifier '/' in /app/guzzle/src/Guzzle/Plugin/Cookie/Cookie.php on line 440

Probably because the remote server is sending something stupid as the cookie domain. There is some normalization going on in the plugin, though the error means that something is getting through regardless. We might filter_var() the $cookieDomain against domain name, or something like that...

[mtdowling]

Interesting. Filtering the domain could work. Do you know exactly what domain was provided when the error occurred, or can you think of a test case for this?

[Thinkscape]

I didn't look deeper into it. I'd generally say it's risky to throw
concatenated strings as patterns for preg_match. Maybe it was some ipv6
address? or some international domain? or numeric domain? or something else
weird ... or just garbage in the cookie....

[mtdowling]

Yeah, that would be a good improvement.

[curtisdf]

I know it's been 4+ years, but this bug has reappeared. I just submitted a pull request which reapplies the same fix as referenced above. See #1999.