From: Graham Campbell Date: Sun, 20 Mar 2022 21:51:18 +0000 Subject: Release 1.8.5 (#491) Origin: backport, https://github.com/guzzle/psr7/commit/337e3ad8e5716c15f9657bd214d16cc5e69df268 --- src/MessageTrait.php | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/MessageTrait.php b/src/MessageTrait.php index f5f61db..4ac4687 100644 --- a/src/MessageTrait.php +++ b/src/MessageTrait.php @@ -218,7 +218,7 @@ trait MessageTrait // Clients must not send a request with line folding and a server sending folded headers is // likely very rare. Line folding is a fairly obscure feature of HTTP/1.1 and thus not accepting // folding is not likely to break any legitimate use case. - if (! preg_match('/^(?:[\x21-\x7E\x80-\xFF](?:[\x20\x09]+[\x21-\x7E\x80-\xFF])?)*$/', $value)) { + if (! preg_match('/^[\x20\x09\x21-\x7E\x80-\xFF]*$/', $value)) { throw new \InvalidArgumentException(sprintf('"%s" is not valid header value', $value)); } }