说明
返回可供读取的字节数(即,它所连接的服务器已写入客户端的数据量)。
available() 继承自 Stream 实用程序类。
用法
client.available()
参数
- None
返回
- 可用的字节数。
示例
#include <SPI.h>
#include <WiFiNINA.h>
char ssid[] = "myNetwork"; // your network SSID (name)
char pass[] = "myPassword"; // your network password
int status = WL_IDLE_STATUS;
char servername[]="google.com"; // Google
WiFiClient client;
void setup() {
Serial.begin(9600);
Serial.println("Attempting to connect to WPA network...");
Serial.print("SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
if ( status != WL_CONNECTED) {
Serial.println("Couldn't get a wifi connection");
// don't do anything else:
while(true);
}
else {
Serial.println("Connected to wifi");
Serial.println("\nStarting connection...");
// if you get a connection, report back via serial:
if (client.connect(servername, 80)) {
Serial.println("connected");
// Make a HTTP request:
client.println("GET /search?q=arduino HTTP/1.0");
client.println();
}
}
}
void loop() {
// if there are incoming bytes available
// from the server, read them and print them:
if (client.available()) {
char c = client.read();
Serial.print(c);
}
// if the server's disconnected, stop the client:
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
// do nothing forevermore:
for(;;)
;
}
}
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注:本文由纯净天空筛选整理自arduino.cc大神的英文原创作品 WiFiNINA - client.available()。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。