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srtp: use SRTP_SRCTP_INDEX_LEN define from libsrtp 2.6.0

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BUG=webrtc:42222036

Change-Id: Ibf5c6b200501c114b9709b76685bb0ecd30bf9fb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/359627
Commit-Queue: Philipp Hancke <phancke@meta.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43538}
This commit is contained in:
Philipp Hancke 2024-08-15 16:15:55 -07:00 committed by WebRTC LUCI CQ
parent afe5d2f758
commit 7738bc23ed
1 changed files with 1 additions and 1 deletions
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2
pc/srtp_session.cc
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@ -249,7 +249,7 @@ bool SrtpSession::ProtectRtcp(void* p, int in_len, int max_len, int* out_len) {
// SRTP_MAX_TRAILER_LEN bytes of free space after the data. WebRTC
// never includes a MKI, therefore the amount of bytes added by the
// srtp_protect_rtp call is known in advance and depends on the cipher suite.
int need_len = in_len + sizeof(uint32_t) + rtcp_auth_tag_len_; // NOLINT
int need_len = in_len + SRTP_SRCTP_INDEX_LEN + rtcp_auth_tag_len_;
if (max_len < need_len) {
RTC_LOG(LS_WARNING) << "Failed to protect SRTCP packet: The buffer length "
<< max_len << " is less than the needed " << need_len;