Merge pull request #515 from david-cermak/fix/ws_dyn_buffer

[ws-client]: Fix usage of the dynamic buffer

Author: david-cermak

components/esp_websocket_client/esp_websocket_client.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -550,9 +550,13 @@ static int esp_websocket_client_send_with_exact_opcode(esp_websocket_client_hand
     int ret = -1;
     int need_write = len;
     int wlen = 0, widx = 0;
-
     bool contained_fin = opcode & WS_TRANSPORT_OPCODES_FIN;
 
+    if (esp_websocket_new_buf(client, true) != ESP_OK) {
+        ESP_LOGE(TAG, "Failed to setup tx buffer");
+        return -1;
+    }
+
     while (widx < len || opcode) {  // allow for sending "current_opcode" only message with len==0
         if (need_write > client->buffer_size) {
             need_write = client->buffer_size;
@@ -1204,33 +1208,27 @@ int esp_websocket_client_send_fin(esp_websocket_client_handle_t client, TickType
 
 int esp_websocket_client_send_with_opcode(esp_websocket_client_handle_t client, ws_transport_opcodes_t opcode, const uint8_t *data, int len, TickType_t timeout)
 {
-    int ret = ESP_OK;
+    int ret = -1;
     if (client == NULL || len < 0 || (data == NULL && len > 0)) {
         ESP_LOGE(TAG, "Invalid arguments");
-        return ESP_FAIL;
+        return -1;
     }
 
     if (xSemaphoreTakeRecursive(client->lock, timeout) != pdPASS) {
         ESP_LOGE(TAG, "Could not lock ws-client within %" PRIu32 " timeout", timeout);
-        return ESP_FAIL;
+        return -1;
     }
 
     if (!esp_websocket_client_is_connected(client)) {
         ESP_LOGE(TAG, "Websocket client is not connected");
-        ret = ESP_FAIL;
         goto unlock_and_return;
     }
 
     if (client->transport == NULL) {
         ESP_LOGE(TAG, "Invalid transport");
-        ret = ESP_FAIL;
-        goto unlock_and_return;
-    }
-    if (esp_websocket_new_buf(client, true) != ESP_OK) {
-        ESP_LOGE(TAG, "Failed to setup tx buffer");
-        ret = ESP_FAIL;
         goto unlock_and_return;
     }
+
     ret = esp_websocket_client_send_with_exact_opcode(client, opcode | WS_TRANSPORT_OPCODES_FIN, data, len, timeout);
     if (ret < 0) {
         ESP_LOGE(TAG, "Failed to send the buffer");