[CXF-6871] Adjust default User-Agent header format to better comply with HTTP specification

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 2.7.11, 3.1.6
• Fix Version/s: 3.1.7, 3.2.0
• Component/s: Transports
• Estimated Complexity: Novice
• Assignee: Sergey Beryozkin
• Reporter: Colin Hurley
• Created: 19/Apr/16 03:53
• Updated: 14/Oct/16 14:21
• Resolved: 26/Apr/16 10:39

Description

The default value CXF sends for the User-Agent HTTP header is formatted as E.g. Apache CXF 3.1.6.

According to the HTTP specification, multiple products in the User-Name header are delimited by whitespace, and a product can optionally indicate its version by separating the product name and product version with a slash. RFC-1945, Sections 10.15, 3.7; RFC-2616, Sections 14.43, 3.8

Based on this information, CXF's default User-Agent value is indicating three products with unspecified versions: Apache, CXF, and 3.1.6, rather than the intended Product Name = Apache CXF and Product Version = 3.1.6.

I suggest altering the formatting so the default User-Agent for CXF becomes E.g. Apache-CXF/3.1.6. This will convey the intended product information so it semantically complies with RFC-1945 and RFC-2616.