thanks kovid,
now it will work.
another problem is to bypass the adserver (ww251.smartadserver.com).
i'm not able to prevent it from fetching.
if fetching from this url, download time per link is about 10-30 sec. and there many links to smartadserver.
the code would be right, i believe.
Code:
filter_regexps = [r'http://ww251\.smartadserver\.com']
is there another way to bypass it from download?