ESP8266 WebServer③-基于AsyncElegantOTA.h网页OTA升级的配套工程文件

# ESPAsyncWebServer [](https://travis-ci.org/me-no-dev/ESPAsyncWebServer)  [](https://www.codacy.com/manual/me-no-dev/ESPAsyncWebServer?utm_source=github.com&utm_medium=referral&utm_content=me-no-dev/ESPAsyncWebServer&utm_campaign=Badge_Grade) A fork of the [ESPAsyncWebServer](https://github.com/me-no-dev/ESPAsyncWebServer) library by [@me-no-dev](https://github.com/me-no-dev) for [ESPHome](https://esphome.io). For help and support [](https://gitter.im/me-no-dev/ESPAsyncWebServer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) Async HTTP and WebSocket Server for ESP8266 Arduino For ESP8266 it requires [ESPAsyncTCP](https://github.com/me-no-dev/ESPAsyncTCP) To use this library you might need to have the latest git versions of [ESP8266](https://github.com/esp8266/Arduino) Arduino Core For ESP32 it requires [AsyncTCP](https://github.com/me-no-dev/AsyncTCP) to work To use this library you might need to have the latest git versions of [ESP32](https://github.com/espressif/arduino-esp32) Arduino Core ## Table of contents - [ESPAsyncWebServer](#espasyncwebserver) - [Table of contents](#table-of-contents) - [Installation](#installation) - [Using PlatformIO](#using-platformio) - [Why should you care](#why-should-you-care) - [Important things to remember](#important-things-to-remember) - [Principles of operation](#principles-of-operation) - [The Async Web server](#the-async-web-server) - [Request Life Cycle](#request-life-cycle) - [Rewrites and how do they work](#rewrites-and-how-do-they-work) - [Handlers and how do they work](#handlers-and-how-do-they-work) - [Responses and how do they work](#responses-and-how-do-they-work) - [Template processing](#template-processing) - [Libraries and projects that use AsyncWebServer](#libraries-and-projects-that-use-asyncwebserver) - [Request Variables](#request-variables) - [Common Variables](#common-variables) - [Headers](#headers) - [GET, POST and FILE parameters](#get-post-and-file-parameters) - [FILE Upload handling](#file-upload-handling) - [Body data handling](#body-data-handling) - [JSON body handling with ArduinoJson](#json-body-handling-with-arduinojson) - [Responses](#responses) - [Redirect to another URL](#redirect-to-another-url) - [Basic response with HTTP Code](#basic-response-with-http-code) - [Basic response with HTTP Code and extra headers](#basic-response-with-http-code-and-extra-headers) - [Basic response with string content](#basic-response-with-string-content) - [Basic response with string content and extra headers](#basic-response-with-string-content-and-extra-headers) - [Send large webpage from PROGMEM](#send-large-webpage-from-progmem) - [Send large webpage from PROGMEM and extra headers](#send-large-webpage-from-progmem-and-extra-headers) - [Send large webpage from PROGMEM containing templates](#send-large-webpage-from-progmem-containing-templates) - [Send large webpage from PROGMEM containing templates and extra headers](#send-large-webpage-from-progmem-containing-templates-and-extra-headers) - [Send binary content from PROGMEM](#send-binary-content-from-progmem) - [Respond with content coming from a Stream](#respond-with-content-coming-from-a-stream) - [Respond with content coming from a Stream and extra headers](#respond-with-content-coming-from-a-stream-and-extra-headers) - [Respond with content coming from a Stream containing templates](#respond-with-content-coming-from-a-stream-containing-templates) - [Respond with content coming from a Stream containing templates and extra headers](#respond-with-content-coming-from-a-stream-containing-templates-and-extra-headers) - [Respond with content coming from a File](#respond-with-content-coming-from-a-file) - [Respond with content coming from a File and extra headers](#respond-with-content-coming-from-a-file-and-extra-headers) - [Respond with content coming from a File containing templates](#respond-with-content-coming-from-a-file-containing-templates) - [Respond with content using a callback](#respond-with-content-using-a-callback) - [Respond with content using a callback and extra headers](#respond-with-content-using-a-callback-and-extra-headers) - [Respond with content using a callback containing templates](#respond-with-content-using-a-callback-containing-templates) - [Respond with content using a callback containing templates and extra headers](#respond-with-content-using-a-callback-containing-templates-and-extra-headers) - [Chunked Response](#chunked-response) - [Chunked Response containing templates](#chunked-response-containing-templates) - [Print to response](#print-to-response) - [ArduinoJson Basic Response](#arduinojson-basic-response) - [ArduinoJson Advanced Response](#arduinojson-advanced-response) - [Serving static files](#serving-static-files) - [Serving specific file by name](#serving-specific-file-by-name) - [Serving files in directory](#serving-files-in-directory) - [Serving static files with authentication](#serving-static-files-with-authentication) - [Specifying Cache-Control header](#specifying-cache-control-header) - [Specifying Date-Modified header](#specifying-date-modified-header) - [Specifying Template Processor callback](#specifying-template-processor-callback) - [Param Rewrite With Matching](#param-rewrite-with-matching) - [Using filters](#using-filters) - [Serve different site files in AP mode](#serve-different-site-files-in-ap-mode) - [Rewrite to different index on AP](#rewrite-to-different-index-on-ap) - [Serving different hosts](#serving-different-hosts) - [Determine interface inside callbacks](#determine-interface-inside-callbacks) - [Bad Responses](#bad-responses) - [Respond with content using a callback without content length to HTTP/1.0 clients](#respond-with-content-using-a-callback-without-content-length-to-http10-clients) - [Async WebSocket Plugin](#async-websocket-plugin) - [Async WebSocket Event](#async-websocket-event) - [Methods for sending data to a socket client](#methods-for-sending-data-to-a-socket-client) - [Direct access to web socket message buffer](#direct-access-to-web-socket-message-buffer) - [Limiting the number of web socket clients](#limiting-the-number-of-web-socket-clients) - [Async Event Source Plugin](#async-event-source-plugin) - [Setup Event Source on the server](#setup-event-source-on-the-server) - [Setup Event Source in the browser](#setup-event-source-in-the-browser) - [Scanning for available WiFi Networks](#scanning-for-available-wifi-networks) - [Remove handlers and rewrites](#remove-handlers-and-rewrites) - [Setting up the server](#setting-up-the-server) - [Setup global and class functions as request handlers](#setup-global-and-class-functions-as-request-handlers) - [Methods for controlling websocket connections](#methods-for-controlling-websocket-connections) - [Adding Default Headers](#adding-default-headers) - [Path variable](#path-variable) ## Installation ### Using PlatformIO [PlatformIO](http://platformio.org) is an open source ecosystem for IoT development with cross platform build system, library manager and full support for Espressif ESP8266/ESP32 development. It works on the popular host OS: Mac OS X, Windows, Linux 32/64, Linux ARM (like Raspberry Pi, BeagleBone, CubieBoard). 1. Install [PlatformIO IDE](http://platformio.org/platformio-ide) 2. Create new project