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目錄

client.connect()

[Ethernet]

描述

Connects to a specified IP address and port. The return value indicates success or failure. Also supports DNS lookups when using a domain name.

語法

EthernetClient client;

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

參數

  • ip: the IP address that the client will connect to (array of 4 bytes)
  • URL: the domain name the client will connect to (string, ex.:”arduino.cc”)
  • port: the port that the client will connect to (int)

回傳

回傳 true if the connection succeeds, false if not.

範例

#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(;;)
      ;
  }
}

函式庫參考主頁面

86Duino 參考的文本是根據 Creative Commons Attribution-ShareAlike 3.0 License,部分文本是從 the Arduino reference 修改的。 參考中的代碼示例已發佈到公共領域。

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