[quicwg/base-drafts] HTTP/3 Pseudoheader constraints are incorrect? (#2966)
martinduke <notifications@github.com> Wed, 14 August 2019 19:59 UTC
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Subject: [quicwg/base-drafts] HTTP/3 Pseudoheader constraints are incorrect? (#2966)
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I'm carefully parsing the wording in quic-http sec. 4.1.1 and don't think it's right: > Endpoints MUST NOT > generate pseudo-header fields other than those defined in [HTTP2]. > The restrictions on the use of pseudo-header fields in > Section 8.1.2.1 of [HTTP2] also apply to HTTP/3. In RFC 7540, 8.1.2.1 says > Endpoints MUST NOT > generate pseudo-header fields other than those defined in this > document... > > Pseudo-header fields defined for requests MUST NOT appear > in responses; pseudo-header fields defined for responses MUST NOT > appear in requests. Pseudo-header fields MUST NOT appear in > trailers. Endpoints MUST treat a request or response that contains > undefined or invalid pseudo-header fields as malformed > (Section 8.1.2.6). > > All pseudo-header fields MUST appear in the header block before > regular header fields. Any request or response that contains a > pseudo-header field that appears in a header block after a regular > header field MUST be treated as malformed (Section 8.1.2.6). This notably does NOT include the further restrictions in 8.1.2.3: > All HTTP/2 requests MUST include exactly one valid value for the > ":method", ":scheme", and ":path" pseudo-header fields, unless it is > a CONNECT request (Section 8.3). An HTTP request that omits > mandatory pseudo-header fields is malformed (Section 8.1.2.6). I am far from an expert on HTTP headers, but I suspect it's not right that clients could send quantities of :method, :scheme, and :path other than 1. We should probably fix the section reference, though I haven't reviewed 8.1.2 carefully enough to know exactly how that should read. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/quicwg/base-drafts/issues/2966
- [quicwg/base-drafts] HTTP/3 Pseudoheader constrai… martinduke
- Re: [quicwg/base-drafts] HTTP/3 Pseudoheader cons… Mike Bishop
- Re: [quicwg/base-drafts] HTTP/3 Pseudoheader cons… Lucas Pardue
- Re: [quicwg/base-drafts] HTTP/3 Pseudoheader cons… Mike Bishop