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res_rtp_asterisk: Always return provided DTLS packet length.

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OpenSSL can not tolerate if the packet sent out does not
match the length that it provided to the sender. This change
lies and says that each time the full packet was sent. If
a problem does occur then a retransmission will occur as
appropriate.

ASTERISK-28576

Change-Id: Id42455b15c9dc4eb987c8c023ece6fbf3c22a449
This commit is contained in:
Joshua Colp
2019-11-14 06:19:04 -04:00
committed by George Joseph
parent 990a91b44a
commit 02129ad4d0
1 changed files with 8 additions and 2 deletions
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10
res/res_rtp_asterisk.c
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@@ -660,6 +660,10 @@ static int dtls_bio_write(BIO *bio, const char *buf, int len)
struct ast_sockaddr remote_address = { {0, } };
int ice;
/* OpenSSL can't tolerate a packet not being sent, so we always state that
* we sent the packet. If it isn't then retransmission will occur.
*/
if (rtp->rtcp && rtp->rtcp->dtls.write_bio == bio) {
rtcp = 1;
ast_sockaddr_copy(&remote_address, &rtp->rtcp->them);
@@ -668,10 +672,12 @@ static int dtls_bio_write(BIO *bio, const char *buf, int len)
}
if (ast_sockaddr_isnull(&remote_address)) {
return 0;
return len;
}
return __rtp_sendto(instance, (char *)buf, len, 0, &remote_address, rtcp, &ice, 0);
__rtp_sendto(instance, (char *)buf, len, 0, &remote_address, rtcp, &ice, 0);
return len;
}
static long dtls_bio_ctrl(BIO *bio, int cmd, long arg1, void *arg2)