# HTTPS x509 Bundle Example This example shows how to use the ESP certificate bundle utility to embed a bundle of x509 certificates and use them to establish a simple HTTPS connection over a secure connection. The path of the certificates are specified using menuconfig. See the README.md file in the upper level 'examples' directory for more information about examples. ## Example workflow - ESP TLS is initialized with the certificate bundle option enabled. - The application loops through the given URLs, establishing a secure TLS connection to all of them, verifying the server certificate included. ### Configure the project * Open the project configuration menu (`idf.py menuconfig`) * Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../README.md) for more details. * If using a different folder than `certs` for storing certificates then update `Custom Certificate Bundle Path` under `Component config` - `mbedTLS` - `Certificate Bundle` ### Build and Flash Build the project and flash it to the board, then run monitor tool to view serial output: ``` idf.py -p PORT flash monitor ``` (To exit the serial monitor, type ``Ctrl-]``.) See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects. ## Example Output ``` I (0) cpu_start: Starting scheduler on APP CPU. I (491) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE I (4051) example_connect: Ethernet Link Up I (5971) esp_netif_handlers: eth ip: 192.168.2.137, mask: 255.255.255.0, gw: 192.168.2.2 I (5971) example_connect: Connected to Ethernet I (5971) example_connect: IPv4 address: 192.168.2.137 I (5971) example_connect: IPv6 address: fe80:0000:0000:0000:bedd:c2ff:fed4:a92b I (5981) example: Connecting to 2 URLs I (7100) esp-x509-crt-bundle: Certificate validated I (8371) example: Connection established to https://www.howsmyssl.com/a/check I (11730) esp-x509-crt-bundle: Certificate validated I (11821) example: Connection established to https://espressif.com I (12821) example: Completed 2 connections I (12821) example: Starting over again... ```