Hi,
It seems that the single response of the http_requests requests test results in 'body_length_match' and 'headers_match' fields set to true.
From my understanding a single response request should raise an error set by the 'control_failure' or 'experiment_failure' field.
An example of the described issue: --- agent: agent body_length_match: true body_proportion: 1.0 control_failure: null experiment_failure: null factor: 0.8 headers_diff: !!set {} headers_match: true input: http://beemp3.com/ requests: - request: body: null headers: - - User-Agent - ['Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6'] method: GET tor: {is_tor: false} url: http://beemp3.com/ response: body: "<html>\r\n<head><title>301 Moved Permanently</title></head>\r\n<body bgcolor="\ white">\r\n<center><h1>301 Moved Permanently</h1></center>\r\n<hr><center>nginx/1.2.7</center>\r\ \n</body>\r\n</html>\r\n" code: 301 headers: - - Content-Length - ['184'] - - Server - [nginx/1.2.7] - - Connection - [close] - - Location - ['http://beemp3s.org/'] - - Date - ['Tue, 17 Jun 2014 20:32:43 GMT'] - - Content-Type - [text/html] socksproxy: null ... ---