stun

commit 7110dfe51d3f9082d445f14e0cee73b9c22097ab
parent 2ef9f6169b348d7a5d71b58a4fb6f386f01df7f1
Author: sin <sin@2f30.org>
Date:   Wed, 30 Mar 2016 15:55:20 +0100

discard packets as early as possible

Diffstat:
M
stun.c
 | 
8
++++----

1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/stun.c b/stun.c
@@ -477,10 +477,6 @@ readnet(int fd, unsigned char *pt, int len)
 	pktlen = unpack16(hdr);
 	pktlen &= PKTLENMASK;
 
-	n = readall(fd, iv, IVLEN);
-	if (n <= 0)
-		return n;
-
 	/* discard bad packets */
 	if (pktlen > sizeof(payload)) {
 		while (pktlen) {
@@ -496,6 +492,10 @@ readnet(int fd, unsigned char *pt, int len)
 		return BADPKT;
 	}
 
+	n = readall(fd, iv, IVLEN);
+	if (n <= 0)
+		return n;
+
 	n = readall(fd, payload, pktlen);
 	if (n <= 0)
 		return n;