From 4a3f8de4abe9e7db6e2a03b7d9f416c0ccca9d7d Mon Sep 17 00:00:00 2001
From: Daniele Lacamera <root@danielinux.net>
Date: Fri, 29 Nov 2024 15:02:30 +0100
Subject: [PATCH] Repeat READABLE event if there is still data in queue

---
 src/femtotcp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/femtotcp.c b/src/femtotcp.c
index 1ebf0b4..2b5086c 100644
--- a/src/femtotcp.c
+++ b/src/femtotcp.c
@@ -1379,7 +1379,10 @@ int ft_recvfrom(struct ipstack *s, int sockfd, void *buf, size_t len, int flags,
                 return 0;
             return queue_pop(&ts->sock.tcp.rxbuf, buf, len);
         } else if (ts->sock.tcp.state == TCP_ESTABLISHED) {
-            return queue_pop(&ts->sock.tcp.rxbuf, buf, len);
+            int ret = queue_pop(&ts->sock.tcp.rxbuf, buf, len);
+            if ((ret > 0) && (queue_len(&ts->sock.tcp.rxbuf) > 0))
+                ts->events |= CB_EVENT_READABLE;
+            return ret;
         } else { /* Not established */
             return -1;
         }