From 07902414466cd5111265a6e5e234545325150fff Mon Sep 17 00:00:00 2001
From: David Cermak <cermak@espressif.com>
Date: Wed, 1 Apr 2026 10:33:23 +0200
Subject: [PATCH] fix(examples): Fix socket example incorrect len/error
 handling

Closes https://github.com/espressif/esp-idf/issues/18134
---
 .../sockets/non_blocking/main/non_blocking_socket_example.c  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/protocols/sockets/non_blocking/main/non_blocking_socket_example.c b/examples/protocols/sockets/non_blocking/main/non_blocking_socket_example.c
index c62c54a45d..afcaf2ea5b 100644
--- a/examples/protocols/sockets/non_blocking/main/non_blocking_socket_example.c
+++ b/examples/protocols/sockets/non_blocking/main/non_blocking_socket_example.c
@@ -96,7 +96,10 @@ static int socket_send(const char *tag, const int sock, const char * data, const
     int to_write = len;
     while (to_write > 0) {
         int written = send(sock, data + (len - to_write), to_write, 0);
-        if (written < 0 && errno != EINPROGRESS && errno != EAGAIN && errno != EWOULDBLOCK) {
+        if (written < 0) {
+            if (errno == EINPROGRESS || errno == EAGAIN || errno == EWOULDBLOCK) {
+                continue;
+            }
             log_socket_error(tag, sock, errno, "Error occurred during sending");
             return -1;
         }