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http2: simplify and clean up trailer handling

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Triggered by a crash detected by OSS-Fuzz after the dynbuf introduction in
ed35d6590e. This should make the trailer handling more straight forward and
hopefully less error-prone.

Deliver the trailer header to the callback already at receive-time. No
longer caches the trailers to get delivered at end of stream.

Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22030
Closes #5348
This commit is contained in:
Daniel Stenberg 2020-05-06 23:31:43 +02:00
parent 7ae8801901
commit 54a2b63c70
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GPG key ID: 5CC908FDB71E12C2
3 changed files with 12 additions and 44 deletions
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lib/http.h
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@ -148,7 +148,6 @@ struct HTTP {
struct dynbuf header_recvbuf;
size_t nread_header_recvbuf; /* number of bytes in header_recvbuf fed into
upper layer */
struct dynbuf trailer_recvbuf;
int status_code; /* HTTP status code */
const uint8_t *pausedata; /* pointer to data received in on_data_chunk */
size_t pauselen; /* the number of bytes left in data */