import socket  
  
def receive_large_data(sock, expected_size):  
    data = b''  
    while len(data) < expected_size:  
        remaining = expected_size - len(data)  
        packet = sock.recv(min(remaining, 4096))  # 使用較小的緩沖區(qū)大小以模擬實(shí)際情況  
        if not packet:  
            raise Exception("Connection closed by remote host")  
        data += packet  
    return data  
  
def start_server():  
    server_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  
    server_sock.bind(('localhost', 12345))  
  
    while True:  
        data, addr = server_sock.recvfrom(1024)  # 接收數(shù)據(jù)包，包含數(shù)據(jù)大小和實(shí)際數(shù)據(jù)的第一部分  
        total_size = int(data.decode())  
        print(f"Expecting {total_size} bytes of data from {addr}")  
  
        large_data = receive_large_data(server_sock, total_size)  
        print(f"Received {len(large_data)} bytes of data from {addr}")  
  
        # 處理數(shù)據(jù)...  
        # 例如，可以將其寫(xiě)入文件或進(jìn)行其他處理  
  
if __name__ == "__main__":  
    start_server()

import socket  
  
def send_large_data(sock, data):  
    # 首先發(fā)送數(shù)據(jù)的大小，以便服務(wù)器知道要接收多少數(shù)據(jù)  
    sock.sendto(str(len(data)).encode(), ('localhost', 12345))  
  
    # 然后將數(shù)據(jù)分成小塊并發(fā)送  
    chunk_size = 4096  # 可以根據(jù)需要調(diào)整這個(gè)大小  
    for i in range(0, len(data), chunk_size):  
        sock.sendto(data[i:i+chunk_size], ('localhost', 12345))  
  
def start_client():  
    client_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  
  
    # 創(chuàng)建一個(gè)大于64KB的數(shù)據(jù)包作為示例  
    large_data = b'x' * 70000  # 70,000 字節(jié)的數(shù)據(jù)  
  
    send_large_data(client_sock, large_data)  
  
if __name__ == "__main__":  
    start_client()