Hi, We use turbogears2 via cherrypy. I know this setup is not very common.
I did a capture with wireshark and saw nothing strange: All expected packets were being transferred from the device running the web app to my pc. No communication errors, ... This all happens before you can choose where to store the file. If you then wait +- 10 seconds, select a location and press "save", the problem occurs IE stops saving the file after 1 second (94 kb downloaded in 1 second ...). As for the generator: It doesn't seem to fail. Never got an exception when i put a try/except arround it. It just stops If the data is returned at once, it works ok in all cases. Bob On Jul 6, 6:39 pm, "Diez B. Roggisch" <[email protected]> wrote: > On Tuesday, July 06, 2010 11:54:34 Bob Messiaen wrote: > > > > > Hi, > > > I'm having problems with downloading a large file with internet > > explorer (IE8 in my case). > > Once the "File download" dialog appears and you choose Save, you can > > point the location where to save the file. Depending on how much time > > i spend, selecting the "save to" location, my file gets only partially > > saved. > > > works ok with other browsers. > > > The response i'm creating is not a string but a generator. > > As i have spend some time looking for a solution i ran into this > > article which probably has something to do with my problem: > >http://www.cherrypy.org/wiki/ReturnVsYield > > > Some of the code i'm using. > > Controller code: > > > @expose() > > @handle_exception('/configuration/device/backup') > > def export(self, **kwargs): > > > return filedownloader(octet_stream = file_content, > > filename = "test.tgz", > > content_type = 'application/x-gzip') > > export._cp_config = {'response.stream': True} > > > filedownloader: > > > from itertools import izip_longest > > def grouper(n, iterable, fillvalue=None): > > "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx" > > args = [iter(iterable)] * n > > return izip_longest(fillvalue=fillvalue, *args) > > > def string_chunks(octet_stream, chunck_size): > > for chunk in grouper(chunck_size, octet_stream): > > yield "".join(x for x in chunk if x is not None) > > > def filedownloader(octet_stream, filename='output.txt', > > content_type='text/plain', chunck_size=8192*2, inline=False): > > addFileDownloadHeaders(content_type, filename, inline) > > return string_chunks(octet_stream, chunck_size) > > > I'm using CherryPy 3.1.2, Turbogears 2.1 > > This makes no sense to me - TG2.1 has nothing todo with Cherrypy. > > From what I gather, the problem seems to occur if the generator fails. I > suggest you put a proxy like tcpmon in between your browser & webapp, and see > what goes over the wire. Also, what happens if you return the data at once, > and what happens if you put exception-catching code around the generator, and > dump whatever exception is created to some logfile. > > Diez -- You received this message because you are subscribed to the Google Groups "TurboGears" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/turbogears?hl=en.
