#方案1
#server
f = open(path, 'wb')
for i in f:server.socket.send(i)
f.close()
server.socket.recv(1024)
server.socket.send(b'发送完毕')
#client
recv_data = ''
while True:data = client.socket.recv(1024)if not data:breakrecv_data += data
client.socket.send(b'recv over')
other_data = client.socket.recv(1024)
#方案2
#server
size = os.path.getsize(path)
server.socket.send(size.encode())
server.socket.recv(1024)
f = open(path, 'wb')
for i in f:server.socket.send(i)
f.close()
server.socket.send(b'发送完毕')
#client
size = client.socket.recv(1024)
client.socket.send(b'start')
recv_data = ''
recv_size = 0
while recv_size < size:if size - recv_size < 1024:single_size = size - recv_sizeelse:single_size = 1024data = client.socket.recv(single_size)recv_size += len(data)recv_data += data
other_data = client.socket.recv(1024)

# 服务器端
import socket
import os
import  hashlibserver = socket.socket()
server.bind(('localhost', 9999))
server.listen()while True:conn, addr = server.accept()print('new conn:', addr)while True:data = conn.recv(1024)data = data.decode()if not data:print('客户端已断开')breakcmd, filename = data.split()print(filename)if os.path.isfile(filename):f = open(filename, 'rb')m = hashlib.md5()file_size = os.stat(filename).st_sizeprint(file_size)conn.send(str(file_size).encode('utf-8'))conn.recv(1024)for line in f:m.update(line)conn.send(line)print('md5:', m.hexdigest())f.close()conn.send(m.hexdigest().encode('utf-8'))

# 客户端
import socket
import hashlibclient = socket.socket()
client.connect(('localhost', 9999))while True:cmd = input('>>').strip()if len(cmd) == 0:continueif cmd.startswith('get'):client.send(cmd.encode('utf-8'))cmd_res_size = client.recv(1024)  # 接收长度print('文件大小 %s' % (cmd_res_size.decode()))client.send('准备完毕，开始发送数据'.encode('utf-8'))recv_size = 0file_name = cmd.split()[1]f = open(file_name + '.new', 'wb')m = hashlib.md5()while recv_size < int(cmd_res_size.decode()):if int(cmd_res_size.decode()) - recv_size > 1024:size = 1024else:size = int(cmd_res_size.decode()) - recv_sizedata = client.recv(size)recv_size += len(data)  # 读取每次接收的数据
            f.write(data)m.update(data)#print(recv_size)else:file_md5 = m.hexdigest()print('文件接收完毕', recv_size)f.close()recv_md5 = client.recv(1024)print(file_md5, recv_md5.decode())
client.close()

fileno() # 返回文件描述符
handle_request # 处理单个请求
serve_forever(poll_interval=0.5) # 一直运行直到收到shutdown()请求，每poll_interval检查一次，后调用service_actions()结束
service_actions() # 结束操作
shutdown() # 停止信号
server_close() # 清除server
address_family # 地址簇
RequestHandlerClass # 请求处理类
server_address # ip地址
socket # 同socket
self.allow_reuse_adress # 允许重用地址 socket中socket.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
socket_type # socket使用的协议类型
self.setup() # 请求来之前 self.handle() # 请求来时 self.finish() # 请求处理之后