Opened 6 years ago

Closed 6 years ago

#497 closed design (fixed)

Fine-Tuning when Upgrade takes effect

Reported by: mnot@… Owned by: draft-ietf-httpbis-p1-messaging@…
Priority: normal Milestone: 24
Component: p1-messaging Severity: In WG Last Call
Keywords: Cc:

Description

It's not clear exactly when Upgrade takes effect for each message, which leads to complications when interacting with features like Expect/Continue?.

Proposal from list:

http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-23#section-6.2.2

The server MUST generate an Upgrade header field in the response that indicates

  • which protocol(s) will be switched to immediately after the empty
  • line that terminates the 101 response.

+ which protocol(s) will be switched to. The new protocol takes effect + on each direction after the end of the current message, which means + on the request path immediately after any advertised payload body, and + on the response path immediately after the empty line that terminates + the 101 response. + + When receiving a 101 status code, a client that was waiting for a 100 + status code before emitting its payload body must immediately send it + in order to complete the protocol switch. + + A client waiting for a 101 status code to upgrade the protocol must still + be prepared to handle other 1xx interim responses first before receiving + the 101 status code confirming the protocol upgrade.

Change History (5)

comment:1 Changed 6 years ago by mnot@…

  • Resolution set to incorporated
  • Status changed from new to closed

Fixed in [2410].

comment:2 Changed 6 years ago by julian.reschke@…

From [2413]:

Note change for [2410] (see #497)

comment:3 Changed 6 years ago by mnot@…

  • Milestone changed from unassigned to 24

comment:4 Changed 6 years ago by mnot@…

  • Resolution incorporated deleted
  • Status changed from closed to reopened

comment:5 Changed 6 years ago by mnot@…

  • Resolution set to fixed
  • Status changed from reopened to closed
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