python 客户端socket传输文件,服务端接收并返回收到

在Python中，客户端通过Socket套接字可以发送文件到服务器。首先，你需要创建一个TCP套接字，并连接到服务器。然后，可以使用`sendfile()`函数发送整个文件，而不是逐行或字节发送，这会更高效。下面是一个简单的示例：

**客户端（client.py）：**

import socket

def send_file_to_server(file_path, server_ip, server_port):
    with open(file_path, 'rb') as file:
        client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        client_socket.connect((server_ip, server_port))
        
        try:
            total_sent = 0
            sent = client_socket.sendfile(file, offset=total_sent)
            while sent > 0:
                total_sent += sent
                print(f"Sent {total_sent} bytes")
                sent = client_socket.sendfile(file, offset=total_sent)
        finally:
            client_socket.close()
            print("File transmission complete.")

# 使用示例
send_file_to_server('path/to/your/file', 'server_ip', server_port)

**服务端（server.py）：**

import socket
from os import rename, path

def handle_client(client_socket):
    request = client_socket.recv(1024).decode()
    
    # 从请求中获取文件名
    file_name = request.split('/')[-1]
    
    # 创建一个临时文件保存接收的数据
    temp_file_path = "received_" + file_name
    with open(temp_file_path, 'wb') as file:
        chunk_size = 1024
        while True:
            data = client_socket.recv(chunk_size)
            if not data:
                break
            file.write(data)

    # 将数据写入最终文件并关闭
    with open(file_name, 'wb') as dest_file:
        dest_file.write(open(temp_file_path, 'rb').read())
    rename(temp_file_path, file_name)
    client_socket.sendall("File received successfully".encode())

    client_socket.close()

if __name__ == "__main__":
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_socket.bind(('server_ip', server_port))
    server_socket.listen()
    print("Server is listening...")
    
    while True:
        client_connection, addr = server_socket.accept()
        print(f"Accepted connection from: {addr}")
        handle_client(client_connection)

**相关问题--:**
1. 服务端如何确认文件已成功接收？
2. 如果文件传输过程中网络中断，该如何处理？
3. 在并发情况下，如何改进服务端以更好地处理多个客户端请求？