Using ftplib for multithread uploads

Posted by Arty on Stack Overflow See other posts from Stack Overflow or by Arty
Published on 2010-03-31T01:20:41Z Indexed on 2010/03/31 1:23 UTC
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I'm trying to do multithread uploads, but get errors. I guessed that maybe it's impossible to use multithreads with ftplib?

Here comes my code:

    class myThread (threading.Thread):
    def __init__(self, threadID, src, counter, image_name):
        self.threadID = threadID
        self.src = src
        self.counter = counter
        self.image_name = image_name
        threading.Thread.__init__(self)
    def run(self):
        uploadFile(self.src, self.image_name)

def uploadFile(src, image_name):
    f = open(src, "rb")            
    ftp.storbinary('STOR ' + image_name, f)
    f.close()

ftp = FTP('host')   # connect to host, default port
ftp.login()               # user anonymous, passwd anonymous@   
dirname = "/home/folder/"
i = 1   
threads = []

for image in os.listdir(dirname):
    if os.path.isfile(dirname + image):
        thread = myThread(i , dirname + image, i, image )   
        thread.start()
        threads.append( thread )        
        i += 1  

for t in threads:
    t.join()

Get bunch of ftplib errors like

raise error_reply, resp error_reply: 200 Type set to I

If I try to upload one by one, everything works fine

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