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QUIC QSM: Add function to determine if data is waiting

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Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24040)
This commit is contained in:
Hugo Landau 2024-03-28 08:58:50 +00:00 committed by Tomas Mraz
parent 3f66fb4817
commit 3c2bc702eb
1 changed files with 34 additions and 0 deletions
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34
include/internal/quic_stream_map.h
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@ -503,6 +503,40 @@ static ossl_inline ossl_unused int ossl_quic_stream_recv_get_final_size(const QU
}
}
/*
* Determines the number of bytes available still to be read, and whether a FIN
* has yet to be read.
*/
static ossl_inline ossl_unused int ossl_quic_stream_recv_pending(const QUIC_STREAM *s)
{
size_t avail;
int fin = 0;
switch (s->recv_state) {
default:
case QUIC_RSTREAM_STATE_NONE:
return 0;
case QUIC_RSTREAM_STATE_RECV:
case QUIC_RSTREAM_STATE_SIZE_KNOWN:
case QUIC_RSTREAM_STATE_DATA_RECVD:
if (!ossl_quic_rstream_available(s->rstream, &avail, &fin))
avail = 0;
if (avail == 0 && fin)
avail = 1;
return avail;
case QUIC_RSTREAM_STATE_RESET_RECVD:
return 1;
case QUIC_RSTREAM_STATE_DATA_READ:
case QUIC_RSTREAM_STATE_RESET_READ:
return 0;
}
}
/*
* QUIC Stream Map
* ===============