[TS-3495] Accept empty header field value

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.3.0, 6.0.0
• Component/s: HTTP/2
• Assignee: Masakazu Kitajo
• Reporter: Masakazu Kitajo
• Created: 04/Apr/15 08:33
• Updated: 13/May/15 20:36
• Resolved: 05/Apr/15 15:52

Description

TS sends back a GOAWAY frame with COMPRESSION_ERROR if a request header field have empty value.

If I understand correctly, empty header value is allowed except pseudo-headers.

header-field = field-name ":" OWS field-value OWS
field-name = token
field-value = *( field-content / obs-fold )

http://tools.ietf.org/html/rfc7230#section-3.2

:path pseudo-header has a limitation.

This pseudo-header field MUST NOT be empty for "http" or "https"
URIs; "http" or "https" URIs that do not contain a path component
MUST include a value of '/'.

https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-8.1.2.3