connected()
描述
判断 Client
物件是否连线中。如果用户端与伺服端的连线已经中断了,但是 Client
物件中仍然有从伺服端传送的资料而未被读取的话,该 Client
物件仍被视为连线中。
语法
client.connected()
参数
无参数
回传
boolean
:如果该 Client
物件连线中则回传 true
,反之回传 false
Example
#include <Ethernet.h> byte mac[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; byte ip[] = { 10, 0, 0, 177 }; byte server[] = { 64, 233, 187, 99 }; // Google EthernetClient client; void setup() { Ethernet.begin(mac, ip); Serial.begin(9600); client.connect(server, 80); delay(1000); Serial.println("connecting..."); if (client.connected()) { 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.