socket.onopen = (e) => {}

This is a JavaScript code that sets up an event listener for when a WebSocket connection is established with a server.

When a WebSocket connection is established, the "onopen" event is triggered, and any code inside the arrow function will be executed. The "e" parameter represents the event object that contains information about the connection.

This can be useful for performing tasks such as sending an initial message to the server, setting up data channels, or updating the user interface to indicate that the connection has been established.

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优化并改编以下代码，使其和原来有部分出入但实现效果相同： 1. import socket 2. 3. 4. def receive(): 5. # 创建套接字 6. udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 7. 8. # 准备数据9. file_name = input("Please input the save file name：") 10. 11. # 发送数据 12. ip = input("Please input the sender's ipv4 address:") 13. udp_socket.sendto(file_name.encode('gbk'), (ip, 7788)) 14. 15. # 接收数据 16. recv_data = udp_socket.recvfrom(1024) 17. file_data = recv_data[0] 18. with open(file_name, 'wb') as f: 19. f.write(file_data) 20. print("Receive successfully!") 21. # 关闭套接字 22. udp_socket.close() 23. 24. 25.def send(): 26. # 创建套接字 27. udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 28. 29. # 绑定本地信息 30. localaddr = ('', 7788) 31. udp_socket.bind(localaddr) 32. 33. # 接收数据 34. while True: 35. recv_data = udp_socket.recvfrom(1024) 36. recv_msg = recv_data[0] 37. send_addr = recv_data[1] 38. print("%s:%s" % (str(send_addr), recv_msg.decode('gbk'))) 39. 40. # 读取文件并传输文件 41. with open(recv_msg.decode('gbk'), 'rb') as f: 42. file_data = f.read() 43. udp_socket.sendto(file_data, send_addr) 44. 45. print("Send successfully!") 46. break 47. 48. # 关闭套接字 49. udp_socket.close() 50. 51. 52.if name == 'main': 3553. while True: 54. answer = input("This is a simple program relying on the Udp protocol, \nif you want to send the file," 55. "please input 1,\n if you want to receive th e file, please input 2, \n if you want exit, " 56. "please input 0:\n") 57. if answer == '0': 58. break 59. if answer == '1': 60. send() 61. if answer == '2': 62. receive()

以下是优化并改编后的代码，改动主要是将 receive() 和 send() 函数中的 input() 改为函数参数接收：

import socket

def receive(file_name, ip):
    # 创建套接字
    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

    # 发送数据
    udp_socket.sendto(file_name.encode('gbk'), (ip, 7788))

    # 接收数据
    recv_data = udp_socket.recvfrom(1024)
    file_data = recv_data[0]
    with open(file_name, 'wb') as f:
        f.write(file_data)
    print("Receive successfully!")

    # 关闭套接字
    udp_socket.close()

def send(file_path):
    # 创建套接字
    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

    # 绑定本地信息
    localaddr = ('', 7788)
    udp_socket.bind(localaddr)

    # 接收数据
    while True:
        recv_data = udp_socket.recvfrom(1024)
        recv_msg = recv_data[0]
        send_addr = recv_data[1]
        print("%s:%s" % (str(send_addr), recv_msg.decode('gbk')))

        # 读取文件并传输文件
        with open(file_path, 'rb') as f:
            file_data = f.read()
        udp_socket.sendto(file_data, send_addr)

        print("Send successfully!")
        break

    # 关闭套接字
    udp_socket.close()

if __name__ == '__main__':
    while True:
        answer = input("This is a simple program relying on the Udp protocol, \nif you want to send the file, please input 1,\nif you want to receive the file, please input 2, \nif you want exit, please input 0:\n")
        if answer == '0':
            break
        if answer == '1':
            file_path = input("Please input the file path to send:")
            send(file_path)
        if answer == '2':
            file_name = input("Please input the save file name:")
            ip = input("Please input the sender's ipv4 address:")
            receive(file_name, ip)

改编后的代码中，receive() 和 send() 函数分别接收一个参数，即文件名或文件路径，而不是通过 input() 函数从命令行读取。这样可以使代码更加模块化和可重用。同时，代码中的注释也进行了修改和补充，以提高代码可读性和易懂性。

使用pyhton获取wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket这个网站的实时数据

要获取wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket这个网站的实时数据，可以使用Python的websocket模块和socket.io-client库。以下是一个示例代码，用于获取wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket网站的实时数据：

import websocket
import socketio

def on_message(ws, message):
    print(message)

def on_error(ws, error):
    print(error)

def on_close(ws):
    print("### closed ###")

def on_open(ws):
    print("### open ###")
    ws.send('42["join-room","707eac8d491fac5c"]')

if __name__ == "__main__":
    url = "wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket"

    websocket.enableTrace(True)
    sio = socketio.Client()
    ws = websocket.WebSocketApp(url,
                                on_message=on_message,
                                on_error=on_error,
                                on_close=on_close)
    ws.on_open = on_open

    sio.connect(url, transports=['websocket'])
    sio.emit('join-room', '707eac8d491fac5c')

    ws.run_forever()

这个示例代码使用websocket模块连接到wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket网站，然后使用socket.io-client库向该网站发送join-room事件。当收到消息时，on_message函数会被调用，它将消息输出到控制台。如果发生错误，on_error函数会被调用，它将错误信息输出到控制台。当连接关闭时，on_close函数会被调用，并输出"### closed ###"。当连接打开时，on_open函数会被调用，并输出"### open ###"。

你需要根据wss://3qvsm5.haidilao.me/socket.io/?gid=707eac8d491fac5c&token=23eae309-17d4-40bb-96d8-0495af69eef1&id=xideqseTe1Q9ns2misrxwockxidxi2z4s2ib0FcL2_UFtAM7ItPcpRgKTwAZZ&rid=0&EIO=3&transport=websocket网站的具体实现，编写适合的on_message函数来解析和处理实时数据。