从本地 XAMPP php 服务器发送数据到 ESP32-S3-VROOM，返回 => 无法连接 [10061]

Question

对于该线程的长度表示歉意。

基本上，我已经成功在 ESP32 和本地 XAMPP 服务器之间建立了活动连接。该服务器存储从 ESP32 捕获的图像，然后使用 Gemini Flash API 对其进行分析。这部分按预期工作。

但是，我正在努力建立一个活动的 WebSocket 连接，以将响应发送回我的 ESP32 以触发特定的微控制器功能。不幸的是，终端显示以下错误消息：

socket_connect(): unable to connect [10061]: No connection could be made because the target machine actively refused it in <b>C:\xampp\htdocs\image_server\index.php</b> on line <b>15</b><br />

这些是以下代码片段以及 Wireshark 捕获：

C++ Arduino 代码：

#include <Arduino.h>
#include <ArduinoJson.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiServer.h>
#include "esp_camera.h"
#include <FreeRTOS.h>
#include <task.h>

TaskHandle_t captureTaskHandle;
TaskHandle_t serverTaskHandle;

const char* ssid = "SSID";
const char* password = "PASS";

String serverName = "192.168.0.98";   // LOCAL SEVER IP ADDRESS
String serverPath = "/image_server/index.php";     // SERVER PATH => index.php
const int serverPort = 8000; // PORT XAMPP IS LISTENING ON TO RECEIVE DATA 

#define port 80 // THE PORT THE ESP32 IS LISTENING ON

WiFiServer server(port);
WiFiClient client;
// CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM -1
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 15
#define SIOD_GPIO_NUM 4
#define SIOC_GPIO_NUM 5
#define Y2_GPIO_NUM 11
#define Y3_GPIO_NUM 9
#define Y4_GPIO_NUM 8
#define Y5_GPIO_NUM 10
#define Y6_GPIO_NUM 12
#define Y7_GPIO_NUM 18
#define Y8_GPIO_NUM 17
#define Y9_GPIO_NUM 16
#define VSYNC_GPIO_NUM 6
#define HREF_GPIO_NUM 7
#define PCLK_GPIO_NUM 13

const int timerInterval = 30000;    // time between each HTTP POST image

void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.print("ESP32-CAM IP Address: ");
  Serial.println(WiFi.localIP());

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sccb_sda = SIOD_GPIO_NUM;
  config.pin_sccb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;

  // init with high specs to pre-allocate larger buffers
  if(psramFound()){
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 5;  //0-63 lower number means higher quality
    config.fb_count = 1;
  } else {
    config.frame_size = FRAMESIZE_CIF;
    config.jpeg_quality = 12;  //0-63 lower number means higher quality
    config.fb_count = 1;
  }
  
  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    delay(1000);
    ESP.restart();
  }
  // IGNORE CALLS UPON SENDING IMAGE FUNCTION IN FULL CODE.
  xTaskCreate(captureTask, "Capture Task", 4096, NULL, 1, &captureTaskHandle);

  // Create server task on core 1
  xTaskCreate(serverTask, "Server Task", 2048, NULL, 1, &serverTaskHandle);
}

void serverTask(void *pvParameters) {
  while (1) {
  // Code for handling incoming connections to the ESP32
  WiFiClient client = server.available(); // Wait for incoming connections
  if (client) {
    Serial.println("Client connected.");
    // Receive data from the client (PHP script)
    String receivedData = "";
    while (client.connected() && client.available()) {
      char c = client.read();
      receivedData += c;
    }

    Serial.println("Received data:");
    Serial.println(receivedData);
    client.stop(); // Close the connection
    Serial.println("Client disconnected.");
    }
    vTaskDelay(pdMS_TO_TICKS(100));  // Delay for server task
    }
}

void loop() {
}

PHP发送函数：

function sendContent($dataToSend)
{
  echo('Sending data: '. $dataToSend);
  $host = "192.168.0.65";
  $port = 80; // Standard HTTP port
  
  // Create a socket connection
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if (!$socket) {
    echo "socket_create() failed: " . socket_last_error() . PHP_EOL;
    exit;
  }
  
  // Connect to the ESP32 server
  if (!socket_connect($socket, $host, $port)) {
    echo "socket_connect() failed: " . socket_last_error() . PHP_EOL;
    exit;
  }
  
  // Send data to the ESP32
  $bytesSent = socket_write($socket, $dataToSend, strlen($dataToSend));
  if ($bytesSent === FALSE) {
    echo "socket_write() failed: " . socket_last_error() . PHP_EOL;
    exit;
  }
  echo "Sent " . $bytesSent . " bytes of data to ESP32." . PHP_EOL;
  
  // Optional: Receive response from the ESP32 (if implemented in the ESP32 code)
  $response = socket_read($socket, 1024); // Adjust buffer size as needed
  if ($response !== FALSE) {
    echo "Received response from ESP32: " . $response . PHP_EOL;
  }
  
  // Close the socket connection
  socket_close($socket);
}

Wireshark 捕获：

Answer 1

问题是我从未真正在 void setup() 中使用以下命令启动服务器：

server.begin();