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(;;) ; } }
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.