python中websockets与主线程传递参数的实现

一、子线程创建websockets服务端接收客户端数据并存入队列

发送的消息客户端与服务端统一，多种消息加入判断的标签

服务端：web_server.py

import asyncio
import json
import base64
import queue
import threading
import time
import cv2
import moment
import numpy as np
import requests
import websockets


class WebServer:
    def __init__(self, host, port):
        self.host = host
        self.port = port
        self.msg_queue = queue.Queue()
        self.clients = []
        self.flag = True

    async def echo(self, websocket, path):
        client_ip, client_port = websocket.remote_address
        self.clients.append(websocket)
        while True:
            try:
                # 在这里处理收到的消息
                # async for recv_text in websocket:
                recv_text = await websocket.recv()
                with open(\"aa.txt\",\"w\") as f:
                    f.write(recv_text)
                data = json.loads(recv_text)
                #if type(data) is not dict: # 判断数据
                #    continue
                self.msg_queue.put(res)
 
            except websockets.ConnectionClosed:
                print(\"ConnectionClosed...\", websocket.remote_address)  # 链接断开
                self.clients.remove(websocket)
                break
            except websockets.InvalidState:
                print(\"InvalidState...\", websocket.remote_address)  # 无效状态
                self.clients.remove(websocket)
                break
            except Exception as err:
                print(\"ws:\", err)
                pass

    def connect(self):
        asyncio.set_event_loop(asyncio.new_event_loop())
        start_server = websockets.serve(self.echo, self.host, self.port)
        asyncio.get_event_loop().run_until_complete(start_server)
        asyncio.get_event_loop().run_forever()
        print(\"连接成功！\")

    def run(self):
        t = threading.Thread(target=self.connect)
        t.start()
        print(\"已启动！\")

二、主线程内启动子线程接收并处理数据

收到消息后根据情况处理消息

主线程调用服务端：main.py

from web_server import WebServer


class MainThread:
    def __init__(self):
        self.ws = WebServer(\"192.168.6.28\", 8000)
        self.ws.run()

    def run(self):
        while True:
            try:
                data = self.ws.msg_queue.get()
                # flag = data.get(\"flag\")  # 内容标签 判断是否是自己想要的内容
                # if not flag:
                #    continue
                try:
                    # 处理数据
                    print(data)
                    pass
                except Exception as e:
                    print(\"报错:\", e)
            except Exception as err:
                print(\"报错:\", err)
                pass


if __name__ == \'__main__\':
    M = MainThread()
    M.run()

客户端：web_client.py

客户端连接服务端，并发送消息

import json

import websocket


class WebClient:
    def __init__(self, host, port):
        self.host = host
        self.port = port
        self.conn = None
        self.flag = False

    def connect(self):
        try:
            url = f\"ws://{self.host}:{self.port}\"
            self.conn = websocket.create_connection(url)
            self.flag = True
        except Exception as err:
            self.flag = False

    def close(self):
        self.conn.close()

    def recv(self):
        data = self.conn.recv(1024)
        print(data)

    def send(self, data):
        self.conn.send(data)


if __name__ == \'__main__\':
    host = \"192.168.6.28\"
    # host = \"127.0.0.1\"
    port = 8000
    ws = WebClient(host, port)
    if not ws.flag:
        ws.connect()
    with open(\"bb.txt\") as f:
        data = f.read()
    ws.send(data)

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