python基于tcp 多客户端网络传输的架构，实现本地图片的传输和保存

Python基于TCP多客户端网络传输的架构可以使用socket和threading等模块来实现。以下是一个简单的实现本地图片传输和保存的示例代码：

import socket
import threading
import os

# 服务器地址和端口
SERVER_ADDRESS = 'localhost'
SERVER_PORT = 9999

# 保存图片的目录
SAVE_DIR = 'saved_images'

# 创建保存图片的目录
if not os.path.exists(SAVE_DIR):
    os.makedirs(SAVE_DIR)

def handle_client(client_socket):
    # 接收文件名和文件大小
    filename = client_socket.recv(1024).decode()
    filesize = int(client_socket.recv(1024).decode())

    # 保存文件
    filepath = os.path.join(SAVE_DIR, filename)
    with open(filepath, 'wb') as f:
        remaining_size = filesize
        while remaining_size > 0:
            data = client_socket.recv(1024)
            f.write(data)
            remaining_size -= len(data)

    print(f'Saved {filename} ({filesize} bytes) to {SAVE_DIR}')

    # 关闭客户端连接
    client_socket.close()

def main():
    # 创建服务器socket
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind((SERVER_ADDRESS, SERVER_PORT))
    server_socket.listen(5)
    print(f'Server listening on {SERVER_ADDRESS}:{SERVER_PORT}')

    while True:
        # 接受客户端连接
        client_socket, client_address = server_socket.accept()
        print(f'Accepted connection from {client_address[0]}:{client_address[1]}')

        # 创建线程处理客户端请求
        client_thread = threading.Thread(target=handle_client, args=(client_socket,))
        client_thread.start()

if __name__ == '__main__':
    main()

客户端代码如下：

import socket
import os

# 服务器地址和端口
SERVER_ADDRESS = 'localhost'
SERVER_PORT = 9999

# 需要传输的图片路径
IMAGE_PATH = 'test.jpg'

def main():
    # 创建客户端socket
    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    client_socket.connect((SERVER_ADDRESS, SERVER_PORT))

    # 发送文件名和文件大小
    filename = os.path.basename(IMAGE_PATH)
    filesize = os.path.getsize(IMAGE_PATH)
    client_socket.send(filename.encode())
    client_socket.send(str(filesize).encode())

    # 发送文件内容
    with open(IMAGE_PATH, 'rb') as f:
        remaining_size = filesize
        while remaining_size > 0:
            data = f.read(1024)
            client_socket.send(data)
            remaining_size -= len(data)

    print(f'Sent {filename} ({filesize} bytes) to server')

    # 关闭客户端连接
    client_socket.close()

if __name__ == '__main__':
    main()

在运行服务器代码之前，需要先启动客户端代码，并且确保`test.jpg`文件存在。启动服务器代码后，客户端会将`test.jpg`文件传输到服务器，并保存到`saved_images`目录中。