Arduino - ClientConnect

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Ethernet : Client class

## connect()

#### 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 an int (1,-1,-2,-3,-4) indicating connection status :

- SUCCESS 1
- TIMED_OUT -1
- INVALID_SERVER -2
- TRUNCATED -3
- INVALID_RESPONSE -4

#### Example

#include <Ethernet.h>
#include <SPI.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 10, 0, 0, 177 };
byte server[] = { 64, 233, 187, 99 }; // Google
EthernetClient client;
void setup()
{
Ethernet.begin(mac, 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 Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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