WiFiNINA - server.write()

server.write(data)
server.write(buffer, size);

#include <SPI.h>
#include <WiFiNINA.h>

char ssid[] = "yourNetwork";
char pass[] = "yourPassword";
int status = WL_IDLE_STATUS;

WiFiServer server(80);

void setup() {
  // initialize serial:
  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");
    while(true);
  }
  else {
    server.begin();
  }
}

void loop() {
  // listen for incoming clients
  WiFiClient client = server.available();
  if (client == true) {
       // read bytes from the incoming client and write them back
    // to any clients connected to the server:
    server.write(client.read());
  }
}