粘包udp

# import socket
# sk = socket.socket()
# sk.bind(('127.0.0.1',9999))
# sk.listen()
# conn,addr=sk.accept()
# # conn.send(b'5')
# conn.send(b'hello')
# # conn.send(b'5')
# # conn.send(b'world')
# conn.close()
# sk.close()









import socket
import json
sk= socket.socket()
sk.bind(('127.0.0.1',9999))
sk.listen()
conn,addr = sk.accept()
file_size = int(conn.recv(1024).decode('utf-8'))
with open('day1内容回顾',mode='wb')as f:
    while file_size>0:
        file_content = conn.recv(1024)
        file_size-=len(file_content)
        f.write(file_content)
conn.close()
sk.close()


# import socket
# import json
# sk = socket.socket()
# sk.bind(('127.0.0.1',9999))
# sk.listen()
# conn,addr=sk.accept()
# s={"key":'values'}
# ret = json.dumps(s)
# conn.send(ret.encode('utf-8'))
# conn.close()
# sk.close()