From a5b508d1fb751015ecb9b6701749dcdcd81e3071 Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Mon, 14 Oct 2024 20:57:00 +0200
Subject: TCP: Don't free buffer prematurely

---
 kernel/network/tcp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'kernel/network')

diff --git a/kernel/network/tcp.c b/kernel/network/tcp.c
index e608f6c..d3ed73e 100644
--- a/kernel/network/tcp.c
+++ b/kernel/network/tcp.c
@@ -296,7 +296,6 @@ void handle_tcp(ipv4_t src_ip, ipv4_t dst_ip, const u8 *payload,
     if (FIN & flags) {
       tcp_send_empty_payload(con, ACK);
       con->state = TCP_STATE_CLOSE_WAIT;
-      tcp_strip_connection(con);
       break;
     }
     if (tcp_payload_length > 0) {
@@ -305,6 +304,7 @@ void handle_tcp(ipv4_t src_ip, ipv4_t dst_ip, const u8 *payload,
       }
       int rc = ringbuffer_write(&con->incoming_buffer, tcp_payload,
                                 tcp_payload_length);
+      assert(!ringbuffer_isempty(&con->incoming_buffer));
       con->rcv_nxt += rc;
       con->should_send_ack = 1;
     }
-- 
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