如何通过套接字发送rsa.key.PublicKey对象？

from rsa.key import newkeys

# 生成RSA密钥对
public_key, private_key = newkeys(2048)

import pickle

# 将公钥对象序列化为字符串
public_key_str = pickle.dumps(public_key)

import socket

# 建立套接字连接
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('接收方IP地址', 端口号))

# 发送公钥字符串
sock.send(public_key_str)

import pickle

# 接收公钥字符串
public_key_str = sock.recv(1024)

# 将公钥字符串反序列化为公钥对象
public_key = pickle.loads(public_key_str)