如何通過以太網屏蔽連接到帶有 Arduino 的 loaclhost？

Question

我需要將數據從 Arduino 發送到將在我的計算機上運行的本地服務器。 計算機通過連接到路由器的電纜連接到帶有 Eternet Shield 的 Wi-Fi、Arduino Uno。

我從 WebClient 示例中提取了一個標准草圖，並更改了我通過 ipconfig 找到的 IPv4 地址。 這應該可以解決問題（正如我在這里讀到的），但是端口監視器給出了“連接失敗”。 可能是什么問題呢？

#include <SPI.h>
#include <Ethernet.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress server(192, 168, 1, 4);  // numeric IP for Google (no DNS)
//char server[] = "localhost";    // name address for Google (using DNS)

IPAddress ip(192, 168, 1, 229);

EthernetClient client;

void setup() {
  Serial.begin(9600);
  Ethernet.init(4);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  // start the Ethernet connection:
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing forevermore:
    // try to congifure using IP address instead of DHCP:
    Ethernet.begin(mac, ip);
  }
  // give the Ethernet shield a second to initialize:
  delay(1000);
  Serial.println("connecting...");

  // if you get a connection, report back via serial:
  if (client.connect(server, 3000)) {
    Serial.println("connected");
    // Make a HTTP request:
    client.println("GET /search?q=arduino HTTP/1.1");
    client.println("Host: localhost");
    client.println("Connection: close");
    client.println();
  }
  else {
    // kf you didn't get a connection to the server:
    Serial.println("connection failed");
  }
}

void loop()
{
  // if there are incoming bytes available
  // from the server, read them and print them:
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  // if the server's disconnected, stop the client:
  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();

    // do nothing forevermore:
    while (true);
  }
}

Answer 1

應該禁用 Windows 防火牆