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Fixed a bug in tcp_enqueue introduced with v1.79 of this file while fixing bug #25094 (zero-length pbuf)

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goldsimon 2009-04-27 19:00:23 +00:00
parent 261dfdf010
commit 36e3d24331
1 changed files with 4 additions and 2 deletions
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6
src/core/tcp_out.c
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@ -358,6 +358,8 @@ tcp_enqueue(struct tcp_pcb *pcb, void *arg, u16_t len,
/* free the first (header-only) pbuf if it is now empty (contained only headers) */
struct pbuf *old_q = queue->p;
queue->p = queue->p->next;
old_q->next = NULL;
queuelen--;
pbuf_free(old_q);
}
LWIP_ASSERT("zero-length pbuf", (queue->p != NULL) && (queue->p->len > 0));
@ -476,8 +478,8 @@ tcp_output(struct tcp_pcb *pcb)
useg = pcb->unacked;
if (useg != NULL) {
for (; useg->next != NULL; useg = useg->next);
}
}
/* If the TF_ACK_NOW flag is set and no data will be sent (either
* because the ->unsent queue is empty or because the window does
* not allow it), construct an empty ACK segment and send it.