Read a byte from the file without advancing to the next one. That is, successive calls to peek() will return the same value, as will the next call to read().
This function inherited from the Stream class. See the Stream class main page for more information.
client.peek()
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#include <SPI.h>
#include <WiFiNINA.h>
#include "arduino_secrets.h"
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0; // your network key Index number (needed only for WEP)
int status = WL_IDLE_STATUS;
char server[] = "www.google.com"; // name address for Google (using DNS)
WiFiClient client;
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; }
if (WiFi.status() == WL_NO_MODULE) {
Serial.println("Communication with WiFi module failed!");
while (true);
}
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
delay(10000);
}
Serial.println("Connected to WiFi");
printWifiStatus();
Serial.println("\nStarting connection to server...");
IPAddress result;
int err = WiFi.hostByName(server, result) ;
if (err == 1) {
Serial.print("IP address: ");
Serial.println(result);
} else {
Serial.print("Error code: ");
Serial.println(err);
}
if (client.connect(result, 80)) {
Serial.println("connected to server");
client.println("GET /search?q=arduino HTTP/1.1");
client.println("Host: www.google.com");
client.println("Connection: close");
client.println();
}
}
void loop() {
int i = 0;
while (client.available()) {
char c = client.peek();
Serial.print("peek: ");
Serial.println(c);
Serial.print("calling a second time peek, the char is the same: ");
c = client.peek();
Serial.println(c);
Serial.print("calling the read retry the char and erase from the buffer: ");
c = client.read();
Serial.println(c);
if (i == 2) {
while (1);
}
i++;
}
}
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