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Respect the direction set in a template stream #618

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Respect the direction set in a template stream #618

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6 changes: 5 additions & 1 deletion srtp/srtp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2137,7 +2137,7 @@ srtp_err_status_t srtp_protect_mki(srtp_ctx_t *ctx,
*/
stream = srtp_get_stream(ctx, hdr->ssrc);
if (stream == NULL) {
if (ctx->stream_template != NULL) {
if ((ctx->stream_template != NULL) && (ctx->stream_template->direction != dir_srtp_receiver)) {
srtp_stream_ctx_t *new_stream;

/* allocate and initialize a new stream */
Expand Down Expand Up @@ -2465,6 +2465,10 @@ srtp_err_status_t srtp_unprotect_mki(srtp_ctx_t *ctx,
stream = srtp_get_stream(ctx, hdr->ssrc);
if (stream == NULL) {
if (ctx->stream_template != NULL) {
if (ctx->stream_template->direction == dir_srtp_sender) {
return srtp_err_status_no_ctx;
}

stream = ctx->stream_template;
debug_print(mod_srtp, "using provisional stream (SSRC: 0x%08x)",
ntohl(hdr->ssrc));
Expand Down