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User (firstname.lastname@example.org) posted:
Scenario: many users log onto a Portal, via a corporate network.
Each one must pass a proxy, hence, 'loosing' it's IP address beyond.
I need to know the 'source port' for the http requests in order to
establish their uniqueness.
Does anyone know how we can obtain the 'source port' from information
using Load Runner?
I believe you can use sniffer software to do this, but is there a way
of obtaining this information from LR?
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Re: Source Port
You may be in for a challenge. Most browsers maintain multiple threads for gathering information off of a web page, therefor you could have 6 or more open TCP sessions per client downloading images, text, and so forth.
Even if you were to use a sniffer you would only see the source port on the proxy server, as the proxy is responsible for maintaining the mapping of client connections for information to the sessions the proxy establishes to gather the information at the behest of the client. Similarly if you were to place a sniffer on the client side you would only see the conenctions to the proxy without the associated session information onto the intended host.
LoadRunner VU's do have the ability to correlate information returned by the server, so if your web site generates some sort of unique identifier for those who visit the site, then you should be able to capture that value and parameterize the upbound stream to ensure that all of your users (for instance) don't all log in with one user ID and password and then clobber each other's work.
Record a Web session from your browser using the Windows Sockets recorder and you will wee what I mean about the multiple sessions being used to download information. The information you need to pass back to the server in order to maintain correct communication is most likely embedded in the HTML stream rather than the underlying TCP connection information.
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