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Servers can still CANCEL, too. #2426

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merged 2 commits into from Feb 9, 2019
Merged

Servers can still CANCEL, too. #2426

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Servers can still CANCEL, too.
MikeBishop Feb 6, 2019
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martinthomson Feb 7, 2019
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16 changes: 10 additions & 6 deletions draft-ietf-quic-http.md
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Expand Up @@ -1004,11 +1004,15 @@ some higher layer of software that might have taken some action as a result. The
client can treat requests rejected by the server as though they had never been
sent at all, thereby allowing them to be retried later on a new connection.
Servers MUST NOT use the HTTP_REQUEST_REJECTED error code for requests which
were partially or fully processed. When a client sends a STOP_SENDING with
HTTP_REQUEST_CANCELLED, a server MAY indicate the error code
HTTP_REQUEST_REJECTED in the corresponding RESET_STREAM if no processing was
performed. Clients MUST NOT reset streams with the HTTP_REQUEST_REJECTED error
code except in response to a QUIC STOP_SENDING frame.
were partially or fully processed. When a server abandons a response after
partial processing, it SHOULD abort its response stream with the error code
HTTP_REQUEST_CANCELLED.

When a client sends a STOP_SENDING with HTTP_REQUEST_CANCELLED, a server MAY
send the error code HTTP_REQUEST_REJECTED in the corresponding RESET_STREAM
if no processing was performed. Clients MUST NOT reset streams with the
HTTP_REQUEST_REJECTED error code except in response to a QUIC STOP_SENDING
frame that contains the same code.

If a stream is cancelled after receiving a complete response, the client MAY
ignore the cancellation and use the response. However, if a stream is cancelled
Expand Down Expand Up @@ -1382,7 +1386,7 @@ HTTP_PUSH_ALREADY_IN_CACHE (0x04):
: The server has attempted to push content which the client has cached.

HTTP_REQUEST_CANCELLED (0x05):
: The client no longer needs the requested data.
: The request or its response is cancelled.

HTTP_INCOMPLETE_REQUEST (0x06):
: The client's stream terminated without containing a fully-formed request.
Expand Down