feat(http): added http client

http/client.py

@@ -0,0 +1,23 @@
+import requests
+
+
+def fetch_data(url):
+    try:
+        response = requests.get(url, stream=True)
+        response.raise_for_status()
+
+        # define buffer size
+        buffer_size = 5000
+
+        # reading data in chunks
+        for chunk in response.iter_content(chunk_size=buffer_size):
+            if chunk:
+                print(chunk.decode("utf-8"))
+
+    except requests.exceptions.RequestException as e:
+        print(f"HTTP GET request failed: {e}")
+
+
+if __name__ == "__main__":
+    url = "http://192.168.1.100"
+    fetch_data(url)

http/client/CMakeLists.txt

@@ -0,0 +1,8 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(client)

http/client/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "client.c"
+                    INCLUDE_DIRS ".")

http/client/main/client.c

@@ -0,0 +1,195 @@
+#include "esp_event.h"
+#include "esp_log.h"
+#include "esp_wifi.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+#include "nvs_flash.h"
+#include <esp_http_client.h>
+
+static const char *TAG = "tcp_client";
+
+#define WIFI_SSID "tb"
+#define WIFI_PASS "HACK@LAB"
+#define MAX_RETRY 5
+
+#define HOST_IP_ADDR "192.168.1.100"
+
+static EventGroupHandle_t s_wifi_event_group;
+static int retry_num = 0;
+#define PORT 3333
+
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT BIT1
+
+static void event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data)
+{
+    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START)
+    {
+        esp_wifi_connect();
+    }
+    else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED)
+    {
+        if (retry_num < MAX_RETRY)
+        {
+            esp_wifi_connect();
+            retry_num++;
+            ESP_LOGI(TAG, "retry to connect to the AP");
+        }
+        else
+        {
+            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+        }
+        ESP_LOGI(TAG, "connect to the AP fail");
+    }
+    else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP)
+    {
+        retry_num = 0;
+        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+    }
+}
+
+static esp_err_t http_event_handler(esp_http_client_event_t *evt)
+{
+    switch (evt->event_id)
+    {
+    case HTTP_EVENT_ERROR:
+        ESP_LOGI(TAG, "HTTP_EVENT_ERROR");
+        break;
+    case HTTP_EVENT_ON_CONNECTED:
+        ESP_LOGI(TAG, "HTTP_EVENT_ON_CONNECTED");
+        break;
+    case HTTP_EVENT_HEADER_SENT:
+        ESP_LOGI(TAG, "HTTP_EVENT_HEADER_SENT");
+        break;
+    case HTTP_EVENT_ON_HEADER:
+        ESP_LOGI(TAG, "HTTP_EVENT_ON_HEADER, key=%s, value=%s", evt->header_key, evt->header_value);
+        break;
+    case HTTP_EVENT_ON_DATA:
+        if (!esp_http_client_is_chunked_response(evt->client))
+        {
+            ESP_LOGI(TAG, "HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
+            printf("%.*s", evt->data_len, (char *)evt->data);
+        }
+        break;
+    case HTTP_EVENT_ON_FINISH:
+        ESP_LOGI(TAG, "HTTP_EVENT_ON_FINISH");
+        break;
+    case HTTP_EVENT_DISCONNECTED:
+        ESP_LOGI(TAG, "HTTP_EVENT_DISCONNECTED");
+        break;
+    }
+
+    return ESP_OK;
+}
+
+void http_get_task(void *pvParameters)
+{
+    esp_http_client_config_t config = {
+        .url = "http://192.168.1.100",
+        .event_handler = http_event_handler,
+        .buffer_size = 5000,
+        .buffer_size_tx = 5000,
+    };
+    esp_http_client_handle_t client = esp_http_client_init(&config);
+
+    // Send the GET request
+    esp_err_t err = esp_http_client_perform(client);
+
+    if (err == ESP_OK)
+    {
+        ESP_LOGI(TAG, "HTTP GET Status = %d, content_length = %d",
+                 esp_http_client_get_status_code(client),
+                 esp_http_client_get_content_length(client));
+    }
+    else
+    {
+        ESP_LOGE(TAG, "HTTP GET request failed: %s", esp_err_to_name(err));
+    }
+
+    esp_http_client_cleanup(client);
+
+    vTaskDelete(NULL);
+}
+
+void app_main(void)
+{
+    // Initialize NVS
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND)
+    {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK(ret);
+
+    s_wifi_event_group = xEventGroupCreate();
+
+    ESP_ERROR_CHECK(esp_netif_init());
+    ESP_ERROR_CHECK(esp_event_loop_create_default());
+
+    esp_netif_create_default_wifi_sta();
+
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+
+    esp_event_handler_instance_t instance_any_id;
+    esp_event_handler_instance_t instance_got_ip;
+    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
+                                                        ESP_EVENT_ANY_ID,
+                                                        &event_handler,
+                                                        NULL,
+                                                        &instance_any_id));
+    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
+                                                        IP_EVENT_STA_GOT_IP,
+                                                        &event_handler,
+                                                        NULL,
+                                                        &instance_got_ip));
+
+    wifi_config_t wifi_config = {
+        .sta = {
+            .ssid = WIFI_SSID,
+            .password = WIFI_PASS,
+            .threshold.authmode = WIFI_AUTH_WPA2_PSK,
+            .pmf_cfg = {
+                .capable = true,
+                .required = false},
+        },
+    };
+    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
+    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
+    ESP_ERROR_CHECK(esp_wifi_start());
+
+    ESP_LOGI(TAG, "wifi_init_sta finished.");
+
+    // Wait for Wi-Fi connection
+    EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
+                                           WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
+                                           pdFALSE,
+                                           pdFALSE,
+                                           portMAX_DELAY);
+
+    if (bits & WIFI_CONNECTED_BIT)
+    {
+        ESP_LOGI(TAG, "connected to ap SSID:%s", WIFI_SSID);
+    }
+    else if (bits & WIFI_FAIL_BIT)
+    {
+        ESP_LOGI(TAG, "Failed to connect to SSID:%s", WIFI_SSID);
+    }
+    else
+    {
+        ESP_LOGE(TAG, "UNEXPECTED EVENT");
+    }
+
+    // Get IP address
+    esp_netif_t *netif = esp_netif_get_handle_from_ifkey("WIFI_STA_DEF");
+    esp_netif_ip_info_t ip_info;
+    esp_netif_get_ip_info(netif, &ip_info);
+
+    // Convert IP address to human-readable form
+    char str_ip[16];
+    esp_ip4addr_ntoa(&ip_info.ip, str_ip, sizeof(str_ip));
+    ESP_LOGI(TAG, "IP Address: %s", str_ip);
+
+    xTaskCreate(&http_get_task, "http_get_task", 10000, NULL, 5, NULL);
+}