AsyncTCP_SSL Library for ESP32

Development Libraries
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The first AsyncTCP_SSL library of the Async_SSL series of libraries for ESP32, ESP8266, STM32, Portenta_H7 etc. has been published. Some more will follow shortly

arduino-library-badgeGitHub release

Features

This library is based on, modified from:

  1. Hristo Gochkov's AsyncTCP
  2. Maarten Fremouw's AsyncTCP.
  3. Thorsten von Eicken's AsyncTCP

to apply the better and faster asynchronous feature of the powerful AsyncTCP Library with SSL, and will be the base for future and more advanced Async libraries for ESP32, such as AsyncSSLWebServer, AsyncHTTPSRequest, etc.

Why Async is better

  • Using asynchronous network means that you can handle more than one connection at the same time
  • You are called once the request is ready and parsed
  • When you send the response, you are immediately ready to handle other connections while the server is taking care of sending the response in the background
  • Speed is OMG
  • Easy to use API, HTTP Basic and Digest MD5 Authentication (default), ChunkedResponse
  • Easily extensible to handle any type of content
  • Supports Continue 100
  • Async WebSocket plugin offering different locations without extra servers or ports
  • Async EventSource (Server-Sent Events) plugin to send events to the browser
  • URL Rewrite plugin for conditional and permanent url rewrites
  • ServeStatic plugin that supports cache, Last-Modified, default index and more
  • Simple template processing engine to handle templates

Currently supported Boards

  1. ESP32 boards, such as ESP32_DEV, etc.
  2. ESP32S2-based boards, such as ESP32S2_DEV, ESP32_S2 Saola, etc.
  3. ESP32C3-based boards, such as ESP32C3_DEV, etc.

Changelog

Releases v1.1.0

  1. Fix duplication bug when using src_h
  2. Enable coexistence with AsyncTCP

Initial Releases v1.0.0

  1. Initial coding to support ESP32
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Converted to h-only library

Releases v1.2.0

  1. Fix multiple-definitions linker error. Drop src_cpp and src_h directories
  2. Add example multiFileProject to demo for multiple-file project.
  3. Add platformio.ini
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Releases v1.3.0

  1. Remove hard-code if possible
  2. Improve debug messages by adding functions to display error/state messages instead of cryptic error/state number
  3. Clean up
  4. Add support to ESP32_S3, using ESP32 core v2.0.3
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Releases v1.3.1

  1. Increase ASYNC_QUEUE_LENGTH to default 512 from 32 and make it user-configurable
  2. Increase ASYNC_TCP_PRIORITY to default 10 from 3, and make it user-configurable
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