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BUG/MEDIUM: mux-h1: Cound data from input buf during zero-copy forwarding

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During zero-copy forwarding, we first try to forward data found in the input
buffer before trying to receive more data. These data must be removed from
the amount of data to forward (the cound variable).

Otherwise, on an internal retry, in h1_fastfwd(), we can be lead to read
more data than expected. It is especially a problem on the end of a
chunk. An error is erroneously reported because more data than announced are
received.

This patch should fix the issue #2382. It must be backported to 2.9.
This commit is contained in:
Christopher Faulet 2023-12-11 21:55:32 +01:00
parent 2421c6fa7d
commit eed1e8733c
1 changed files with 1 additions and 0 deletions
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src/mux_h1.c
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@ -4633,6 +4633,7 @@ static int h1_fastfwd(struct stconn *sc, unsigned int count, unsigned int flags)
}
total += sdo->iobuf.data;
count -= sdo->iobuf.data;
#if defined(USE_LINUX_SPLICE)
if (sdo->iobuf.pipe) {
/* Here, not data was xferred */