connect()

Posted by On 01 / 24 / 2014 2 Comments

Description

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

Syntax


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

Parameters

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)

Returns

Returns true if the connection succeeds, false if not.

Example

#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(;;)
      ;
  }
}

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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.