Hi, I'm having a problem putting binary data into a body of http response using twisted web.I'm doing something very wrong, any help is appreciated. The funny thing is that it runs on python2.7, but fails on python2.5. Most probably it has something to do with unicode/str. Code snipplet: ------- def render_GET(self, request): # get contents of a binary file, e.g. zip archive request.setHeader('Content-type', 'some-mime') return content ----- This results in a error: .... File "C:\Python25\lib\site-packages\twisted\internet\selectreactor.py", line 146, in _doReadOrWrite why = getattr(selectable, method)() File "C:\Python25\lib\site-packages\twisted\internet\tcp.py", line 428, in doWrite result = abstract.FileDescriptor.doWrite(self) File "C:\Python25\lib\site-packages\twisted\internet\abstract.py", line 199, in doWrite self.dataBuffer = buffer(self.dataBuffer, self.offset) + "".join(self._tempDataBuffer) exceptions.UnicodeDecodeError: 'ascii' codec can't decode byte 0x92 in position 10: ordinal not in range(128) Any ideas? I assumed that I can put any contents into http body. thanks, Ilja