ahserver_g/ahserver/filedownload.py

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import os
import asyncio
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import mimetypes
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from aiohttp.web_exceptions import HTTPNotFound
from aiohttp.web import StreamResponse
from aiohttp import web
import aiofile
from appPublic.rc4 import RC4
crypto_aim = 'God bless USA and others'
def path_encode(path):
rc4 = RC4()
return rc4.encode(path,crypto_aim)
def path_decode(dpath):
rc4 = RC4()
return rc4.decode(dpath,crypto_aim)
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async def file_download(request, filepath, content_type=None):
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filename = os.path.basename(filepath)
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r = web.FileResponse(filepath)
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ct = content_type
if ct is None:
ct, encoding = mimetypes.guess_type(filepath)
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if ct is not None:
r.content_type = ct
else:
r.content_type = 'application/octet-stream'
r.content_disposition = 'attachment; filename=%s' % filename
r.enable_compression()
print(filepath,filename)
return r
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if os.path.exists(filepath):
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length = os.path.getsize(filepath)
response = web.Response(
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status=200,
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headers = {
'Content-Disposition': 'attrachment;filename={}'.format(filename)
}
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)
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print('downloading',filepath,'size',length)
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await response.prepare(request)
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cnt = 0
with open(filepath, 'rb') as f:
chunk = f.read(10240000)
cnt = cnt + len(chunk)
await response.write(chunk)
print('write size=',cnt)
await response.fsyn()
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await response.write_eof()
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print('end')
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return response
raise HTTPNotFound