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python使用socket实现的传输demo示例【基于TCP协议】

更新时间:2020-07-31 17:24:01 作者:startmvc
本文实例讲述了python使用socket实现的传输demo。分享给大家供大家参考,具体如下:socket传

本文实例讲述了python使用socket实现的传输demo。分享给大家供大家参考,具体如下:

socket传输,客户端代码


import socket
def main():
 tcp_client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 # 服务器位于本机 9999
 tcp_client_socket.connect( ("192.168.27.72", 9999) )
 # 告诉服务器,我要下载哪一个文件
 file_name = input("请输入要下载的文件名:")
 tcp_client_socket.send(file_name.encode("utf-8"))
 temp = tcp_client_socket.recv(1024)
 print(temp)
 file_length = int(temp.decode("utf-8"))
 # 接收数据 字节
 recv_data = tcp_client_socket.recv(file_length)
 # 得到数据,需要将数据写入文件
 if recv_data:
 # f = open("new_" + file_name, "wb")
 # try:
 # f.write(recv_data)
 # except Exception as result:
 # print("写入文件错误")
 # finally:
 # f.close()
 with open("new_" + file_name, "wb") as f:
 f.write(recv_data)
 tcp_client_socket.close()
if __name__ == '__main__':
 main()

服务端代码:


import socket
def main():
 #1创建套接字
 tcp_server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
 #2绑定本地信息bind
 tcp_server_socket.bind(('',9999))
 #3让默认的套接字由主动变为被动listen ????
 tcp_server_socket.listen(128)
 #4等待别人的电话到来(等待客户端的链接 accept)
 new_client_socket, client_addr = tcp_server_socket.accept()
 #5调用发送文件函数,完成为客户端服务
 rece_data = new_client_socket.recv(1024)
 file_name = rece_data.decode('utf-8')
 try:
 f = open(file_name, 'rb')
 content = f.read()
 file_length = len(content)
 print(file_length)
 new_client_socket.send(str(file_length).encode('utf-8')) #????1两个发送第二个执行快了怎么办?
 new_client_socket.send(content)
 except Exception as f:
 print('文件打开失败')
 # 6关闭套接字
 new_client_socket.close()
 tcp_server_socket.close()
if __name__ == '__main__':
 main()

python socket 传输 TCP协议