connect()

描述

连线到指定的 IP 位址与埠编号。除了使用 IP 位址与埠编号作为指定伺服器的方法，还可以使用网域名称(Domain Name)。

语法


client.connect()
client.connect(ip, port)
client.connect(URL, port)


参数

ip：要连线的伺服器的 IP 位址(大小为 4 位元组的阵列)
URL：要连线的伺服器的网域名称(例：www.86duino.com, 型态为 string)
port：要连线的伺服器的埠编号

回传

boolean：如果连线成功回传 true，反之回传 false

范例

#include <Ethernet.h>

byte ip[] = { 10, 0, 0, 177 };
byte server[] = { 64, 233, 187, 99 }; // Google

EthernetClient client;

void setup()
{
  Ethernet.begin(NULL, ip);
  Serial.begin(9600);

  delay(1000);

  Serial.println("connecting...");

  if (client.connect(server, 80)) {
    Serial.println("connected");
    client.println("GET /search?q=arduino HTTP/1.0");
    client.println();
  } else {
    Serial.println("connection failed");
  }
}

void loop()
{
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }

  if (!client.connected()) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
    for(;;)
      ;
  }
}

函式库参考主页面

The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.