libraries/WiFi: Add WiFiWebClientTLS example.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

Author: iabdalkader

libraries/WiFi/examples/WiFiWebClientTLS/WiFiWebClientTLS.ino

@@ -0,0 +1,133 @@
+/*
+  Web client with single CA certificate test
+
+  This sketch demonstrates how to load your own TLS CA certificates
+  and use them to establish a secure connection to a remote server,
+  such as www.howsmyssl.com.
+*/
+
+#include <WiFi.h>
+#include <ZephyrSSLClient.h>
+#include <zephyr/net/tls_credentials.h>
+#include "arduino_secrets.h"
+
+char ssid[] = SECRET_SSID;
+char pass[] = SECRET_PASS;
+
+int status = WL_IDLE_STATUS;
+
+#define CA_CERTIFICATE_TAG 1
+
+char server[] = "www.howsmyssl.com";
+int port = 443;
+
+ZephyrSSLClient client;
+
+// ISRG Root X1 (Let's Encrypt root CA certificate)
+const char isrg_root_x1[] =
+"-----BEGIN CERTIFICATE-----\n"
+"MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw\n"
+"TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh\n"
+"cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4\n"
+"WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu\n"
+"ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY\n"
+"MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc\n"
+"h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+\n"
+"0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U\n"
+"A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW\n"
+"T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH\n"
+"B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC\n"
+"B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv\n"
+"KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn\n"
+"OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn\n"
+"jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw\n"
+"qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI\n"
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+"HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq\n"
+"hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL\n"
+"ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ\n"
+"3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK\n"
+"NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5\n"
+"ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur\n"
+"TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC\n"
+"jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc\n"
+"oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq\n"
+"4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA\n"
+"mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d\n"
+"emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=\n"
+"-----END CERTIFICATE-----\n";
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial) {
+    ;
+  }
+
+  Serial.println("Adding CA certificate...");
+  // Add the ISRG Root X1 CA certificate
+  int ret = tls_credential_add(CA_CERTIFICATE_TAG, TLS_CREDENTIAL_CA_CERTIFICATE,
+                                isrg_root_x1, strlen(isrg_root_x1) + 1);
+
+  if (ret == 0) {
+    Serial.println("CA certificate added successfully");
+  } else {
+    Serial.print("Failed to add CA certificate, error: ");
+    Serial.println(ret);
+    return;
+  }
+
+  // Check for WiFi module
+  if (WiFi.status() == WL_NO_SHIELD) {
+    Serial.println("Communication with WiFi module failed!");
+    return;
+  }
+
+  // Connect to WiFi
+  while (status != WL_CONNECTED) {
+    Serial.print("Attempting to connect to SSID: ");
+    Serial.println(ssid);
+    status = WiFi.begin(ssid, pass);
+    delay(3000);
+  }
+
+  Serial.println("Connected to wifi");
+  Serial.print("IP Address: ");
+  Serial.println(WiFi.localIP());
+  Serial.print("RSSI: ");
+  Serial.println(WiFi.RSSI());
+
+  Serial.println("\nStarting connection to server...");
+
+  if (client.connect(server, port)) {
+    Serial.println("Connected to server!");
+
+    // Make HTTP request
+    client.println("GET /a/check HTTP/1.1");
+    client.print("Host: ");
+    client.println(server);
+    client.println("Connection: close");
+    client.println();
+  } else {
+    Serial.println("Connection failed!");
+  }
+}
+
+void loop() {
+  // if there are incoming bytes available
+  // from the server, read them and print them:
+  while (client.available()) {
+    char c = client.read();
+    Serial.write(c);
+  }
+
+  // if the server's disconnected, stop the client:
+  if (!client.connected()) {
+    Serial.println();
+    Serial.println("disconnecting from server.");
+    client.stop();
+
+    // do nothing forevermore:
+    while (true)
+      ;
+  }
+}

libraries/WiFi/examples/WiFiWebClientTLS/arduino_secrets.h

@@ -0,0 +1,2 @@
+#define SECRET_SSID ""
+#define SECRET_PASS ""