★★ Suresh Nageswaran's blog -- Focus on Performance Testing, LoadRunner, Open source testing tools
http://www.testingreflections.com/blog/76
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Some introduce regarding WinInet Replay option in LoadRunner.
WinInet Replay (instead of Sockets): Instructs VuGen to use the WinInet
replay engine. VuGen has two HTTP replay engines: Sockets-based (default)
or WinInet based. The WinInet is the engine used by Internet Explorer and
it supports all of the features incorporated into the IE browser. The
limitations of the WinInet replay engine are that it is not scalable, nor does
it support UNIX. In addition, when working with threads, the WinInet
engine does not accurately emulate the modem speed and number of
connections.
VuGen¡¯s proprietary sockets-based replay is a lighter engine that is scalable
for load testing. It is also accurate when working with threads. The
limitation of the sockets-based engine is that it does not support SOCKS
proxy. If you are recording in that type of environment, use the WinInet
replay engine.