Ignore out-of-order DTLS ChangeCipherSpec.

net/third_party/nss/ssl/ssl3con.c

Index: net/third_party/nss/ssl/ssl3con.c
===================================================================
--- net/third_party/nss/ssl/ssl3con.c	(revision 274314)
+++ net/third_party/nss/ssl/ssl3con.c	(working copy)
@@ -3621,6 +3621,14 @@
 		SSL_GETPID(), ss->fd));
 
     if (ws != wait_change_cipher) {
+	if (IS_DTLS(ss)) {
+	    /* Ignore this because it's out of order. */
+	    SSL_TRC(3, ("%d: SSL3[%d]: discard out of order "
+			"DTLS change_cipher_spec",
+			SSL_GETPID(), ss->fd));
+	    buf->len = 0;
+	    return SECSuccess;
+	}
 	(void)SSL3_SendAlert(ss, alert_fatal, unexpected_message);
 	PORT_SetError(SSL_ERROR_RX_UNEXPECTED_CHANGE_CIPHER);
 	return SECFailure;