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+ | [[en:arduino:libraries:ethernet|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(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 ===== | ||
+ | <code cpp> | ||
+ | #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(;;) | ||
+ | ; | ||
+ | } | ||
+ | } | ||
+ | </code> | ||
+ | |||
+ | [[en:arduino:libraries|Reference Home]] |