Question

我正在开发一个项目，其中带有PiCam的Raspberry Pi 3每10秒拍摄一张照片并通过Python socket将其发送到远程计算机。我有一个我从this SO question借来的发射器和接收器程序。当我运行代码时，它发送第一个文件没有问题，但是当它尝试发送第二个文件时，我在接收端收到以下错误：

Waiting for a connection.....
Got a connection from ('10.10.10.10', 46490)
File received successfully
Traceback (most recent call last):
File "/home/.../PycharmProjects/PhotoSaver/downloadPhotos.py", line 19, in <module>
    size = int(size, 2)
ValueError: invalid literal for int() with base 2: '0\xc3\xa8\x0f \xb0\x19\xc3d\xa3\x00\x00\xf9\x80\xcf9'

这是传输代码：

#!/usr/bin/env python
import threading
class sendPhotos(object):
    def __init__(self, host="10.10.10.17"):
        self.host = host
        thread = threading.Thread(target=self.run, args=())
        thread.daemon = True                            # Daemonize thread
        thread.start()

    def run(self):
        import socket
        import os
        import thread
        from time import sleep, time
        from picamera import PiCamera
        camera = PiCamera()
        camera.resolution = (1024, 768)
        camera.start_preview()
        #print "Warming up camera"
        sleep(2)
        #print "Camera started"
        s = socket.socket()
        host = self.host
        #host = socket.gethostname()
        port = 9000
        s.connect((host, port))

        while True:
            filename = str(int(time())) + ".jpg"
            camera.capture(filename)#Capture image with name as current time

            size = len(filename)
        size = bin(size)[2:].zfill(16) # encode filename size as 16 bit binary
        s.send(size)
        s.send(filename)

        filename = os.path.join(path,filename)
        filesize = os.path.getsize(filename)
        filesize = bin(filesize)[2:].zfill(32) # encode filesize as 32 bit binary
        s.send(filesize)

        file_to_send = open(filename, 'rb')

        l = file_to_send.read()
        s.sendall(l)
        file_to_send.close()
        print 'File Sent'
            os.system("sudo rm " + filename)
            sleep(10)
s.close()

这是接收代码：

import socket import thread import hashlib

serversock = socket.socket() host = "" port = 9000; serversock.bind((host,port)); filename = "" serversock.listen(10); print "Waiting for a connection....."

clientsocket,addr = serversock.accept() print("Got a connection from %s" % str(addr)) while True:
    size = clientsocket.recv(16) # Note that you limit your filename length to 255 bytes.
    if not size:
        break
    size = int(size, 2)
    filename = clientsocket.recv(size)
    filesize = clientsocket.recv(32)
    filesize = int(filesize, 2)
    file_to_write = open(filename, 'wb')
    chunksize = 4096
    while filesize > 0:
        if filesize < chunksize:
            chunksize = filesize
        data = clientsocket.recv(chunksize)
        file_to_write.write(data)
        filesize -= chunksize

    file_to_write.close()
    print 'File received successfully' serversock.close()

知道导致这种情况的原因是什么？谢谢，

更新：在传输代码中，size，int，格式化并发送如下：

size = len(filename)
size = bin(size)[2:].zfill(16) # encode filename size as 16 bit binary
s.send(size)

当使用repr（）打印时，它显示为：0\xc3\xa8\x0f \xb0\x19\xc3d\xa3\x00\x00\xf9\x80\xcf9 在我看来，这是套接字和解码格式化的一些问题，有更好的方法吗？

Python套接字二进制格式问题

0 个答案: