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avformat/tls_openssl: set dtls remote addr in listen mode

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Taken from the first received packet, which will signify the now
permanent peer of this DTLS "connection".
This commit is contained in:
Timo Rothenpieler
2025-07-12 21:42:59 +02:00
parent 9c55f22ef2
commit 87b09f3931
1 changed files with 17 additions and 1 deletions
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18
libavformat/tls_openssl.c
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@ -465,6 +465,8 @@ typedef struct TLSContext {
BIO_METHOD* url_bio_method;
int io_err;
char error_message[256];
struct sockaddr_storage dest_addr;
socklen_t dest_addr_len;
} TLSContext;
/**
@ -575,9 +577,23 @@ static int url_bio_destroy(BIO *b)
static int url_bio_bread(BIO *b, char *buf, int len)
{
TLSContext *c = BIO_get_data(b);
TLSShared *s = &c->tls_shared;
int ret = ffurl_read(c->tls_shared.is_dtls ? c->tls_shared.udp : c->tls_shared.tcp, buf, len);
if (ret >= 0)
if (ret >= 0) {
if (s->is_dtls && s->listen && !c->dest_addr_len) {
int err_ret;
ff_udp_get_last_recv_addr(s->udp, &c->dest_addr, &c->dest_addr_len);
err_ret = ff_udp_set_remote_addr(s->udp, (struct sockaddr *)&c->dest_addr, c->dest_addr_len, 1);
if (err_ret < 0) {
av_log(c, AV_LOG_ERROR, "Failed connecting udp context\n");
return err_ret;
}
av_log(c, AV_LOG_TRACE, "Set UDP remote addr on UDP socket, now 'connected'\n");
}
return ret;
}
BIO_clear_retry_flags(b);
if (ret == AVERROR_EXIT)
return 0;