code: drawterm

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aan: use unsigned message counters

--- a/aan.c

+++ b/aan.c

@@ -35,8 +35,8 @@

 	int	writer;

 	int	syncer;

-	long	inmsg;

-	long	outmsg;

+	ulong	inmsg;

+	ulong	outmsg;

 	Buf	*unackedhead;

 	Buf	**unackedtail;

@@ -77,7 +77,7 @@

 	Client *c = (Client*)arg;

 	Buf *b;

 	int n;

-	long m;

+	ulong m;

 	for(;;){

 		b = malloc(sizeof(Buf));

@@ -138,7 +138,7 @@

 aanreader(void *arg)

 {

 	Client *c = (Client*)arg;

-	long a, m, lastacked = 0;

+	ulong a, m, lastacked = 0;

 	Buf *b, *x;

 	int n;

@@ -151,7 +151,7 @@

 		m = GBIT32(b->hdr.msg);

 		n = GBIT32(b->hdr.nb);

 		if(n == 0){

-			if(m < 0)

+			if(m == (ulong)-1)

 				continue;

 			goto Closed;

 		} else if(n < 0 || n > Bufsize)

@@ -159,11 +159,11 @@

 		if(readn(c->netfd, b->buf, n) != n)

 			break;

-		if(m < c->inmsg)

+		if(m != c->inmsg)

 			continue;

 		c->inmsg++;

-		if(lastacked != a){

+		if((long)(a - lastacked) > 0){

 			qlock(&c->lk);

 			while((x = c->unackedhead) != nil){

 				assert(GBIT32(x->hdr.msg) == lastacked);