esp32作为客户端基于ESPIDF通过tcp协议传输二维整型数组

可以使用以下代码实现：

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netdb.h>
#include <esp_wifi.h>
#include <esp_event_loop.h>
#include <esp_log.h>
#include <esp_system.h>
#include <nvs_flash.h>

#define HOST_IP_ADDR "192.168.1.100"
#define PORT 8080

static const char *TAG = "TCP_CLIENT";

void tcp_client_task(void *pvParameters)
{
    int addr_family = 0;
    int ip_protocol = 0;

    struct sockaddr_in dest_addr;
    dest_addr.sin_addr.s_addr = inet_addr(HOST_IP_ADDR);
    dest_addr.sin_family = AF_INET;
    dest_addr.sin_port = htons(PORT);
    addr_family = AF_INET;
    ip_protocol = IPPROTO_IP;

    int sock = socket(addr_family, SOCK_STREAM, ip_protocol);
    if (sock < 0) {
        ESP_LOGE(TAG, "Unable to create socket: errno %d", errno);
        vTaskDelete(NULL);
        return;
    }
    ESP_LOGI(TAG, "Socket created, connecting to %s:%d", HOST_IP_ADDR, PORT);

    int err = connect(sock, (struct sockaddr *)&dest_addr, sizeof(dest_addr));
    if (err != 0) {
        ESP_LOGE(TAG, "Socket unable to connect: errno %d", errno);
        vTaskDelete(NULL);
        return;
    }
    ESP_LOGI(TAG, "Successfully connected");

    int array[2][2] = {{1, 2}, {3, 4}};
    char buffer[4 * sizeof(int)];
    memcpy(buffer, array, sizeof(array));

    int err_send = send(sock, buffer, sizeof(buffer), 0);
    if (err_send < 0) {
        ESP_LOGE(TAG, "Error occurred during sending: errno %d", errno);
    }

    ESP_LOGI(TAG, "Message sent");

    vTaskDelete(NULL);
}

void app_main()
{
    nvs_flash_init();
    tcpip_adapter_init();
    ESP_ERROR_CHECK(esp_event_loop_create_default());

    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
    ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));

    wifi_config_t wifi_config = {
        .sta = {
            .ssid = "your_wifi_ssid",
            .password = "your_wifi_password",
        },
    };
    ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
    ESP_ERROR_CHECK(esp_wifi_start());
    ESP_ERROR_CHECK(esp_wifi_connect());

    xTaskCreate(tcp_client_task, "tcp_client", 4096, NULL, 5, NULL);
}

这段代码实现了一个 ESP32 客户端，通过 TCP 协议向指定 IP 地址和端口号的服务器发送一个二维整型数组。在这个例子中，数组的值为 {{1, 2}, {3, 4}}，可以根据实际需求修改。