Initial ESP32 DTLS 1.3 client and server examples

ESP32/DTLS13-wifi-station-client/CMakeLists.txt

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+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+# set(WOLFSSL_ROOT "~/workspace/wolfssl-other-source")
+
+# This tag is used to include this file in the ESP Component Registry:
+# __ESP_COMPONENT_SOURCE__
+
+# Optional WOLFSSL_CMAKE_SYSTEM_NAME detection to find
+# USE_MY_PRIVATE_CONFIG path for my_private_config.h
+#
+if(WIN32)
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WINDOWS")
+    message("Detected Windows")
+endif()
+if(CMAKE_HOST_UNIX)
+    message("Detected UNIX")
+endif()
+if(APPLE)
+    message("Detected APPLE")
+endif()
+if(CMAKE_HOST_UNIX AND (NOT APPLE) AND EXISTS "/proc/sys/fs/binfmt_misc/WSLInterop")
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WSL")
+    message("Detected WSL")
+endif()
+if(CMAKE_HOST_UNIX AND (NOT APPLE) AND (NOT WIN32))
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_LINUX")
+    message("Detected Linux")
+endif()
+if(APPLE)
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_APPLE")
+    message("Detected Apple")
+endif()
+# End optional WOLFSSL_CMAKE_SYSTEM_NAME
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+project(wolfssl_dtls13_client)

ESP32/DTLS13-wifi-station-client/CMakeLists.txt.bak

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+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.5)
+
+# set(WOLFSSL_ROOT "~/workspace/wolfssl-other-source")
+# This example uses an extra component for common functions such as Wi-Fi and Ethernet connection.
+set(EXTRA_COMPONENT_DIRS $ENV{IDF_PATH}/examples/common_components/protocol_examples_common)
+
+# This tag is used to include this file in the ESP Component Registry:
+# __ESP_COMPONENT_SOURCE__
+
+# Optional WOLFSSL_CMAKE_SYSTEM_NAME detection to find
+# USE_MY_PRIVATE_CONFIG path for my_private_config.h
+#
+if(WIN32)
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WINDOWS")
+    message("Detected Windows")
+endif()
+if(CMAKE_HOST_UNIX)
+    message("Detected UNIX")
+endif()
+if(APPLE)
+    message("Detected APPLE")
+endif()
+if(CMAKE_HOST_UNIX AND (NOT APPLE) AND EXISTS "/proc/sys/fs/binfmt_misc/WSLInterop")
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WSL")
+    message("Detected WSL")
+endif()
+if(CMAKE_HOST_UNIX AND (NOT APPLE) AND (NOT WIN32))
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_LINUX")
+    message("Detected Linux")
+endif()
+if(APPLE)
+    # Windows-specific configuration here
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_APPLE")
+    message("Detected Apple")
+endif()
+# End optional WOLFSSL_CMAKE_SYSTEM_NAME
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+project(wolfssl_dtls13_server)

ESP32/DTLS13-wifi-station-client/README.md

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+# wolfSSL DTLS1.3 Project
+
+This is an example minimally viable wolfSSL template to get started with your own project.
+
+### Prerequisites
+
+It is assumed the [ESP-IDF environment](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/) has been installed.
+
+```
+gcc -o client-dtls13 client-dtls13.c -L/mnt/c/workspace/wolfssl-gojimmypi/src/.libs -I/mnt/c/workspace/wolfssl-gojimmypi/ -I/mnt/c/workspace/wolfssl-gojimmypi/include -DWOLFSSL_TLS13 -DWOLFSSL_DTLS -DWOLFSSL_DTLS13 -DWOLFSSL_USER_SETTINGS -lwolfssl -ldl -lm
+```
+
+### Files Included
+
+- [main.c](./main/main.c) with a simple call to an Espressif library (`ESP_LOGI`) and a call to a wolfSSL library (`esp_ShowExtendedSystemInfo`) . 
+
+- See [components/wolfssl/include](./components/wolfssl/include/user_settings.h) directory to edit the wolfSSL `user_settings.h`.
+
+- Edit [main/CMakeLists.txt](./main/CMakeLists.txt) to add/remove source files.
+
+- The [components/wolfssl/CMakeLists.txt](./components/wolfssl/CMakeLists.txt) typically does not need to be changed.
+
+- Optional [VisualGDB Project](./VisualGDB/wolfssl_template_IDF_v5.1_ESP32.vgdbproj) for Visual Studio using ESP32 and ESP-IDF v5.1.
+
+- Edit the project [CMakeLists.txt](./CMakeLists.txt) to optionally point this project's wolfSSL component source code at a different directory:
+
+```
+set(WOLFSSL_ROOT "~/workspace/wolfssl-other-source")
+```
+
+
+## Getting Started:
+
+Here's an example using the command-line [idf.py](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-py.html).
+
+Edit your `WRK_IDF_PATH`to point to your ESP-IDF install directory.
+
+```
+cd /mnt/C/workspace/wolfssl-gojimmypi/IDE/Espressif/ESP-IDF5/examples/wolfssl_dtls13_server
+
+WRK_IDF_PATH=/mnt/c/SysGCC/esp32/esp-idf/v5.1
+
+echo "Run export.sh from ${WRK_IDF_PATH}"
+. ${WRK_IDF_PATH}/export.sh
+
+# build the example:
+idf.py build
+
+# flash the code onto the serial device at /dev/ttyS19
+idf.py flash -p /dev/ttyS19 -b 115200
+
+# build, flash, and view UART output with one command:
+idf.py flash -p /dev/ttyS19 -b 115200 monitor
+
+# erase 
+idf.py erase-flash -p /dev/ttyS9 -b 115200
+
+# save defaults
+idf.py save-defconfig
+```
+
+Press `Ctrl+]` to exit `idf.py monitor`. See [additional monitor keyboard commands](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-monitor.html).
+
+## Other Examples:
+
+For examples, see:
+
+- [TLS Client](../wolfssl_client/README.md)
+- [TLS Server](../wolfssl_server/README.md)
+- [Benchmark](../wolfssl_benchmark/README.md)
+- [Test](../wolfssl_test/README.md)
+- [wolfssl-examples](https://github.com/wolfSSL/wolfssl-examples/tree/master/ESP32)
+- [wolfssh-examples](https://github.com/wolfSSL/wolfssh-examples/tree/main/Espressif)
+
+
+