transport_base: tcp_write error, errno = No more processes, transport_ws: Error write header (IDFGH-12128)

[tao-a-man]

Answers checklist.

• [X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• [X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1.2

Espressif SoC revision.

ESP32-S3

Operating System used.

Windows

How did you build your project?

VS Code IDE

If you are using Windows, please specify command line type.

PowerShell

Development Kit.

esp-idf-v5.1.2

Power Supply used.

USB

What is the expected behavior?

I want create 4 Task

What is the actual behavior?

When i call API in task Task_READER so much times I get error

Steps to reproduce.

1.Build 2.Call API so much times

Debug Logs.

transport_base: tcp_write error, errno = No more processes
transport_ws: Error write header

More Information.

code in Task_WS (Websocket)

xTaskCreate([](void *pvParameters)
                {
                    esp_websocket_client_config_t config = {
                        .uri = "ws://10.17.215.214:7911",
                        // end cofig
                    };

                    client = esp_websocket_client_init(&config);
                    esp_websocket_register_events(
                        client, WEBSOCKET_EVENT_ANY, ([](void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
                                                      {
                                                          esp_websocket_event_data_t *data = (esp_websocket_event_data_t *)event_data;
                                                          switch (event_id)
                                                          {
                                                          case WEBSOCKET_EVENT_CONNECTED:
                                                              ESP_LOGI(TAG, "WEBSOCKET_EVENT_CONNECTED");
                                                              //     esp_websocket_client_send(client, data, len, portMAX_DELAY);

                                                              slint::invoke_from_event_loop([&, ui = slint::ComponentWeakHandle(ui)]
                                                                                            {
                                                                                                auto ui_lock = *ui.lock();
                                                                                                ui_lock->set_IsConnectWS(true);

                                                                                                // end event
                                                                                            });
                                                              break;
                                                          case WEBSOCKET_EVENT_DISCONNECTED:
                                                              ESP_LOGI(TAG, "WEBSOCKET_EVENT_DISCONNECTED");

                                                              slint::invoke_from_event_loop([&, ui = slint::ComponentWeakHandle(ui)]
                                                                                            {
                                                                                                auto ui_lock = *ui.lock();
                                                                                                ui_lock->set_IsConnectWS(false);
                                                                                                // end event
                                                                                            });
                                                              break;
                                                          case WEBSOCKET_EVENT_DATA:
                                                              ESP_LOGI(TAG, "WEBSOCKET_EVENT_DATA");
                                                              ESP_LOGI(TAG, "Received opcode=%d", data->op_code);
                                                              ESP_LOGW(TAG, "Received=%.*s", data->data_len, (char *)data->data_ptr);
                                                              ESP_LOGW(TAG, "Total payload length=%d, data_len=%d, current payload offset=%d\r\n", data->payload_len, data->data_len, data->payload_offset);

                                                              break;
                                                          case WEBSOCKET_EVENT_ERROR:
                                                              ESP_LOGI(TAG, "WEBSOCKET_EVENT_ERROR");
                                                              break;
                                                          }
                                                          // end event
                                                      }),
                        (void *)client);

                    esp_websocket_client_start(client);
                    while (1)
                    {

                        vTaskDelay(2000 / portTICK_PERIOD_MS);
                    }
                    esp_websocket_client_stop(client);
                    ESP_LOGI(TAG, "Websocket Stopped");
                    esp_websocket_client_destroy(client);
                    vTaskDelete(NULL);
                    // end task
                },
                "Task_WS", 1024 * 4, NULL, 2, &xHandleWS);

[tao-a-man]

hii @Lzw655, Can you help me check it 😍

[gabsuren]

@tao-a-man Thank you for raising the issue.

The errors tcp_write error, errno = No more processes and transport_ws: Error write header seem to be caused by resource exhaustion due to too many simultaneous tasks. To address this, ensure proper cleanup and resource management in your tasks. Limiting the number of concurrent tasks or increasing system resources might also help. Additionally, you can refer to the example below for guidance:

ESP WebSocket Client Example

Hope this helps!