What happened?

If an HTTP request contains a header value containing non-ASCII characters, the connection is closed without sending a response. This was observed while running behind a CloudFlare proxy with the "Add visitor location headers" managed transform enabled. The problematic header which triggered the issue was cf-region: São Paulo.

Related

• account for non ASCII values in the headers or preamble java-http#25

Version

1.47.1

Affects Versions

>= 1.41.0