HTTP Proxy generates a failed sample with the URL http:/ every so often. It appears that some browsers will connect to the proxy but then don't send any data. The Proxy code should detect such requests and not attempt to create a sample.
URL: http://svn.apache.org/r1518747 Log: Proxy generates empty http:/ entries when recording Bugzilla Id: 55502 Modified: jmeter/trunk/src/protocol/http/org/apache/jmeter/protocol/http/proxy/Proxy.java jmeter/trunk/xdocs/changes.xml
This issue has been migrated to GitHub: https://github.com/apache/jmeter/issues/3214