python使用stuck 实现scoket编程实现文件传输

# -*- coding: UTF-8 -*-
import socket, time, socketserver, struct, os, _thread

host = ‘127.0.0.1‘
port = 12307
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # 定义socket类型
s.bind((host, port))  # 绑定需要监听的Ip和端口号，tuple格式
s.listen(1)


def conn_thread(connection, address):
    while True:
        try:
            connection.settimeout(600)
            fileinfo_size = struct.calcsize(‘12sl‘)#12s表示12个字符，l表示一个长整型数
            buf = connection.recv(fileinfo_size)
            if buf:  # 如果不加这个if，第一个文件传输完成后会自动走到下一句，需要拿到文件大小信息才可以继续执行
                filename, filesize = struct.unpack(‘12sl‘, buf)
                filename_f = filename.decode("utf-8").strip(‘\00‘)  # C语言中’\0’是一个ASCII码为0的字符,在python中表示占一个位置得空字符
                filenewname = os.path.join(‘e:\\‘, os.path.basename(filename_f))
                print(u‘文件名称:%s , 文件大小: %s‘ % (filenewname, filesize))
                recvd_size = 0  # 定义接收了的文件大小
                file = open(filenewname, ‘wb‘)
                print(u"开始传输文件内容")
                while not recvd_size == filesize:
                    if filesize - recvd_size > 1024:
                        rdata = connection.recv(1024)
                        recvd_size += len(rdata)
                    else:
                        rdata = connection.recv(filesize - recvd_size)
                        recvd_size = filesize
                    file.write(rdata)
                file.close()
                print(‘receive done‘)
                # connection.close()
        except socket.timeout:
            connection.close()

while True:
    print(u"开始进入监听状态")
    connection, address = s.accept()
    print(‘Connected by ‘, address)
    # thread = threading.Thread(target=conn_thread,args=(connection,address)) #使用threading也可以
    # thread.start()
    _thread.start_new_thread(conn_thread, (connection, address))
s.close()

# -*- coding: UTF-8 -*-
import socket, os, struct

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((‘127.0.0.1‘, 12307))
while True:
    filepath = input(‘请输入要传输的文件绝对路径:\r\n‘)
    print(type(filepath))
    print(len(filepath.encode("utf-8")))
    if os.path.isfile(filepath):
        #fileinfo_size = struct.calcsize(‘20sl‘)  # 定义打包规则
        # 定义文件头信息，包含文件名和文件大小
        fhead = struct.pack(‘12sl‘, filepath.encode("utf-8"), os.stat(filepath).st_size)
        print(os.stat(filepath).st_size)
        s.send(fhead)
        print (u‘文件路径: ‘, filepath)
        # with open(filepath,‘rb‘) as fo: 这样发送文件有问题，发送完成后还会发一些东西过去
        fo = open(filepath, ‘rb‘)
        while True:
            filedata = fo.read(1024)
            if not filedata:
                break
            s.send(filedata)
        fo.close()
        print (u‘传输成功‘)
        # s.close()