X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=utcp.c;h=ce056904169c6923baa95a0e5435626e5da75fd5;hb=f268b8518415a5cf896e1b3518c2a0141d1364d4;hp=e347bb7165209b284409c6f92fca724993c05c04;hpb=7109995777c654016784a11fdebe3b26e6a0002a;p=utcp

diff --git a/utcp.c b/utcp.c
index e347bb7..ce05690 100644
--- a/utcp.c
+++ b/utcp.c
@@ -282,7 +282,12 @@ static struct utcp_connection *allocate_connection(struct utcp *utcp, uint16_t s
 
 	c->src = src;
 	c->dst = dst;
+#ifdef UTCP_DEBUG
+#warning debugging
+	c->snd.iss = 0;
+#else
 	c->snd.iss = rand();
+#endif
 	c->snd.una = c->snd.iss;
 	c->snd.nxt = c->snd.iss + 1;
 	c->rcv.wnd = utcp->mtu;
@@ -360,7 +365,7 @@ static void ack(struct utcp_connection *c, bool sendatleastone) {
 	} *pkt;
 
 	pkt = malloc(sizeof pkt->hdr + c->utcp->mtu);
-	if(!pkt->data)
+	if(!pkt)
 		return;
 
 	pkt->hdr.src = c->src;
@@ -500,6 +505,7 @@ static void retransmit(struct utcp_connection *c) {
 				len--;
 				pkt->hdr.ctl |= FIN;
 			}
+			c->snd.nxt = c->snd.una + len;
 			buffer_copy(&c->sndbuf, pkt->data, 0, len);
 			print_packet(c->utcp, "rtrx", pkt, sizeof pkt->hdr + len);
 			utcp->send(utcp, pkt, sizeof pkt->hdr + len);