Sarthak-Pandey commented on code in PR #20627:
URL: https://github.com/apache/nuttx/pull/20627#discussion_r4412197798
##########
net/tcp/tcp_input.c:
##########
@@ -1343,6 +1559,31 @@ static void tcp_input(FAR struct net_driver_s *dev,
uint8_t domain,
/* Queue out-of-order segments. */
tcp_input_ofosegs(dev, conn, iplen);
+#endif
+#ifdef CONFIG_NET_TCPURGDATA
+ /* RFC 793: If the URG bit is set in an out-of-order segment,
+ * announce the urgent pointer and notify listeners.
+ */
+
+ if ((tcp->flags & TCP_URG) != 0)
Review Comment:
Fixed. Moved `tcp_urg_input()` to execute before the `TCP_FIN` check in
`TCP_ESTABLISHED` so the urgent byte is safely extracted and stripped before
the close state transition.
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