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.
server.peek()
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#include <SPI.h>
#include <WiFiNINA.h>
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password
int status = WL_IDLE_STATUS;
WiFiServer server(80);
void setup() {
Serial.begin(9600);
while (!Serial) {
}
if (WiFi.status() == WL_NO_MODULE) {
Serial.println("Communication with WiFi module failed!");
// don't continue
while (true);
}
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
status = WiFi.begin(ssid, pass);
delay(10000);
}
server.begin();
}
void loop() {
// listen for incoming clients
WiFiClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
int i = 0;
while (client.connected()) {
if (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++;
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
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