available()
描述
回傳目前與 Client 連線的伺服端傳送過來的資料量,這些資料都是目前可以讀取的。
available()
是從 Stream
繼承而來。
語法
client.available()
參數
無參數
回傳
int
:目前可以讀取的資料量,以位元組為單位
範例
#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.