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crawler.request_header (collection.cfg setting)


This parameter can be used to specify an optional additional header to be inserted in HTTP(S) requests made by the webcrawler. For example, sending a cookie header may help the WebCrawler in gaining access to a web site which uses cookies to store login information. An alternative approach is to use a form interaction file to login to a specific site.

Default value



Send a cookie string:

crawler.request_header=Cookie: phpbb2mysql_data=xyx; phpbb2mysql_sid=123

This cookie information could be got by loading up the relevant website in a web browser and then examining the cookies it tries to set and store.


  • If sending cookie strings you should set crawler.accept_cookies to "false", to avoid the cookie strings you are trying to send being overridden.
  • You will probably want to use the crawler.request_header_url_prefix parameter as well to limit what URLs the crawler sends these request headers to.

See also


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