centos 7 安装 python3.6 阿里云 websocket 通信

命令：

sudo mkdir /usr/local/python36
cd /home/jack/work
wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tar.xz
tar xvf Python-3.6.6.tar.xz

cd /home/jack/work/Python-3.6.6/
./configure --prefix=/usr/local/python36
make
sudo make install

sudo ln -s /usr/local/python36/bin/python3 /usr/bin/python3
sudo ln -s /usr/local/python36/bin/pip3 /usr/bin/pip3

安装 virtualenv

sudo pip3 install virtualenv
sudo pip3 install --upgrade pip
cd /home/jack/work
virtualenv -p /usr/bin/python3 py36_test

log为：

Running virtualenv with interpreter /usr/bin/python3
Using base prefix '/usr/local/python36'
New python executable in /home/jack/work/py36_test/bin/python3
Also creating executable in /home/jack/work/py36_test/bin/python
Installing setuptools, pip, wheel...done.

激活环境：

source /home/jack/work/py36_test/bin/activate

出现下面的效果：

(py36_test) [jack@ bin]$
(py36_test) [jack@ bin]$ pip  install websockets

执行：
(py36_test) [jack@ py36_test]$ python server.py

server.py 内容为：

#!/usr/bin/env python

# WS server example for old Python versions

import asyncio
import websockets

@asyncio.coroutine
def hello(websocket, path):
    name = yield from websocket.recv()
    print("< {}".format(name))

    greeting = "Hello {}!".format(name)

    yield from websocket.send(greeting)
    print("> {}".format(greeting))

start_server = websockets.serve(hello, '172.31.120.108', 8888)

asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()

client.py的内容：

#!/usr/bin/env python

# WS client example for old Python versions

import asyncio
import websockets

@asyncio.coroutine
def hello():
    websocket = yield from websockets.connect(
        'ws://118.190.215.49:8888/')

    try:
        name = input("What's your name? ")

        yield from websocket.send(name)
        print("> {}".format(name))

        greeting = yield from websocket.recv()
        print("< {}".format(greeting))

    finally:
        yield from websocket.close()

asyncio.get_event_loop().run_until_complete(hello())

172.31.120.108 为个人测试用的阿里云服务器内部的地址

118.190.215.49 为个人测试用的阿里云的公网地址

服务端log：

(py36_test) [jack@ py36_test]$ python server.py
< abc
> Hello abc!

``

客户端log：

E:\python\python3\work\venv\Scripts\python.exe E:/python/python3/work/venv/client.py
What's your name? abc
> abc
< Hello abc!

Process finished with exit code 0

arduino 代码：

#include <Arduino.h>

#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

#include <WebSocketsClient.h>

#include <Hash.h>

ESP8266WiFiMulti WiFiMulti;
WebSocketsClient webSocket;

#define USE_SERIAL Serial

void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {

    switch(type) {
        case WStype_DISCONNECTED:
            USE_SERIAL.printf("[WSc] Disconnected!\n");
            break;
        case WStype_CONNECTED: {
            USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);

            // send message to server when Connected
            webSocket.sendTXT("Connected");
        }
            break;
        case WStype_TEXT:
            USE_SERIAL.printf("[WSc] get text: %s\n", payload);

            // send message to server
            // webSocket.sendTXT("message here");
            break;
        case WStype_BIN:
            USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
            hexdump(payload, length);

            // send data to server
            // webSocket.sendBIN(payload, length);
            break;
    }

}

void setup() {
    // USE_SERIAL.begin(921600);
    USE_SERIAL.begin(115200);

    //Serial.setDebugOutput(true);
    USE_SERIAL.setDebugOutput(true);

    USE_SERIAL.println();
    USE_SERIAL.println();
    USE_SERIAL.println();

    for(uint8_t t = 4; t > 0; t--) {
        USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
        USE_SERIAL.flush();
        delay(1000);
    }

    WiFiMulti.addAP("LRTech", "lanrui2017");

    //WiFi.disconnect();
    while(WiFiMulti.run() != WL_CONNECTED) {
        delay(100);
    }

    // server address, port and URL
    webSocket.begin("118.190.215.49", 8888, "/");

    // event handler
    webSocket.onEvent(webSocketEvent);

    // use HTTP Basic Authorization this is optional remove if not needed
//  webSocket.setAuthorization("user", "Password");

    // try ever 5000 again if connection has failed
    webSocket.setReconnectInterval(5000);

}

void loop() {
    webSocket.loop();
}