Arduino ESP32 Websocket

中文(有中英双语注释)

This lib work with Espressif offical framework esp32-arduino. Only had tested on esp32 dev module. I'm not sure it support ESP8266 or not. In my opinion, ESP32-WROOM-32(module) and ESP8266-12F(module) have almost same price but ESP32 is much powerful.

Before I made this lib, I had used another two libs you could find on github(most stars) for days, they both did very good job.

But connecting speed of the first one it will take 1700 ~ 1900 ms(handshake), it should be 90 ~ 110 ms(test at same time to same server).

Another one has memory leak when act a server(I try to fix it but couldn't find reason).

This lib doesn't support wss://. Because I think use AES(or other encryption) to encrypt data before send it is much better(of course you need both user have same key), that depends on your design.

2022/05/23 Add more comments to default example.

2022/07/05 Bug fixed.

2022/07/11 Latest push add AES 256 CBC code, but this isn't necessary for websocket, you could remove it if you want to.

2022/07/31 Add standard full comments(English version and Chinese version) to header file"mywebsocket.h"; The class "WebSocketClients" had been removed.

Characteristic of this this project

High speed

Connecting and data transfering.

Same connect speed as a browser "new Websocket()" client in Chrome(to my remote server, it is 98ms).

Easy to use

You could start from the examples.

No memory leak

Client and server had been fully tested for days, send and receive large data(16 KB text and binary, random data and length every time, use sha256 to verify data), echo to each other.

Easily handle http request and websocket request when act a server

One line code to start a server to handle http and websocket requests.

Stable

Easily transfer 64KB binary data in AP and STA mode with very low time time consumption and zero error(complex code environment, test more than 10000 times, use sha256 to verify data).

Note

When you test the client, every time after connection lost and reconnected again, you will find heap memory will reduce a little bit, that's not a memory leak, for deeper reason, you should search "lwip memory leak" in google.

For more configs, look into "mywebsocket.h".

The default cache size is large, because heap of ESP32 is huge, you could reduce a little bit if you want.

License

(GNU General Public License v3.0 License)

Children are the future of mankind, but there are still many children who are enduring hunger all over the world at this moment. If you are a good person and you like this lib, please donate to UNICEF. https://unicef.org

weisupreme / arduino_esp32_websocket Goto Github PK