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.
