From b3c39d2324630724e60e6c4731e8b3e9e16457f3 Mon Sep 17 00:00:00 2001
From: Abhik Roy <abhik.roy@espressif.com>
Date: Thu, 8 Sep 2022 16:11:14 +0530
Subject: [PATCH] examples/socket: Fix for send() failure handling.

Closes https://github.com/espressif/esp-idf/issues/9475
---
 examples/protocols/sockets/tcp_server/main/tcp_server.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/examples/protocols/sockets/tcp_server/main/tcp_server.c b/examples/protocols/sockets/tcp_server/main/tcp_server.c
index 6f73e85901..157a19784e 100644
--- a/examples/protocols/sockets/tcp_server/main/tcp_server.c
+++ b/examples/protocols/sockets/tcp_server/main/tcp_server.c
@@ -53,6 +53,8 @@ static void do_retransmit(const int sock)
                 int written = send(sock, rx_buffer + (len - to_write), to_write, 0);
                 if (written < 0) {
                     ESP_LOGE(TAG, "Error occurred during sending: errno %d", errno);
+                    // Failed to retransmit, giving up
+                    return;
                 }
                 to_write -= written;
             }