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fix RST storm: stop proxy_feed after CLOSE sent + free unsent before tcp_close

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Evgeny committed 2026-05-30 23:38:42 +03:00
1 parent 80e4e4fd5d
commit 40d35ee2a5
1 file changed
+2 -1
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src/tcp_proxy.c
+2 -1
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@@ -187,7 +187,7 @@ static void transport_to_uip_cb(struct ll_queue* q, void* arg) {
// Helper: feed data from transport_to_uip queue to lwIP TCP
// ====================================================================
static void proxy_feed_from_transport(struct proxy_conn *pc) {
if (!pc->transport_to_uip || !pc->pcb) return;
if (!pc->transport_to_uip || !pc->pcb || pc->closing_sent) return;
int sent_any = 0;
int entries_fed = 0;
while (1) {
@@ -330,6 +330,7 @@ static err_t proxy_poll_cb(void *arg, struct tcp_pcb *pcb) {
tcp_arg(save, NULL); pc->pcb = NULL;
{ uint16_t wnd_gap = TCP_WND_MAX(save) - save->rcv_wnd;
if (wnd_gap > 0) tcp_recved(save, wnd_gap); }
while (save->unsent) { struct tcp_seg *seg = save->unsent; save->unsent = seg->next; u_free(seg); }
tcp_close(save);
struct tcp_proxy *proxy = pc->proxy;
struct proxy_conn **prev = &proxy->conns;