From 9ec02af1732437693913e0e108380c796520d078 Mon Sep 17 00:00:00 2001
From: Fritz Elfert <fritz@fritz-elfert.de>
Date: Wed, 19 Oct 2022 21:00:07 +0200
Subject: [PATCH] Improve OTA error handling

---
 components/esp_https_ota/src/esp_https_ota.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/components/esp_https_ota/src/esp_https_ota.c b/components/esp_https_ota/src/esp_https_ota.c
index d326c2bea..6da7a918a 100644
--- a/components/esp_https_ota/src/esp_https_ota.c
+++ b/components/esp_https_ota/src/esp_https_ota.c
@@ -64,6 +64,13 @@ esp_err_t esp_https_ota(const esp_http_client_config_t *config)
     }
     esp_http_client_fetch_headers(client);
 
+    int http_status = esp_http_client_get_status_code(client);
+    if (400 <= http_status) {
+        ESP_LOGE(TAG, "HTTP request returned error %d", http_status);
+        http_cleanup(client);
+        return ESP_FAIL;
+    }
+
     esp_ota_handle_t update_handle = 0;
     const esp_partition_t *update_partition = NULL;
     ESP_LOGI(TAG, "Starting OTA...");