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Burp repeter - cant build from scratch

Daniel | Last updated: Jul 31, 2020 07:00PM UTC

When I build a Request from scratch I got timeout in response meanwhile If I take the request from proxy sent to repeater I got 200 OK. Example Request: GET /success.txt HTTP/1.1 Host: detectportal.firefox.com User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:79.0) Gecko/20100101 Firefox/79.0 Accept: */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cache-Control: no-cache Pragma: no-cache Connection: close Response: HTTP/1.0 408 Request Time-out Server: AkamaiGHost Mime-Version: 1.0 Date: Fri, 31 Jul 2020 18:51:05 GMT Content-Type: text/html Content-Length: 218 Expires: Fri, 31 Jul 2020 18:51:05 GMT <HTML><HEAD> <TITLE>Request Timeout</TITLE> </HEAD><BODY> <H1>Request Timeout</H1> The server timed out while waiting for the browser's request.<P> Reference&#32;&#35;2&#46;86917f3e&#46;1596221465&#46;0 </BODY></HTML> Same request from proxy I got following response: HTTP/1.1 200 OK Content-Type: text/plain Content-Length: 8 Last-Modified: Mon, 15 May 2017 18:04:40 GMT ETag: "ae780585f49b94ce1444eb7d28906123" Accept-Ranges: bytes Server: AmazonS3 X-Amz-Cf-Id: lu4jGmQuIDogaPp8CnxZ0htlybkh21oHZXShTNPtlM8vqKqS4aAASA== Cache-Control: no-cache, no-store, must-revalidate Date: Fri, 31 Jul 2020 18:52:16 GMT Connection: close success

Ben, PortSwigger Agent | Last updated: Aug 03, 2020 07:20AM UTC

Hi Daniel, When you create this request from scratch, have you ensured that you have configured the correct target information and added the requisite two blank lines at the bottom of the request?

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