Parasoft Virtualize message proxies dramatically simplify the process of recording live system behavior and routing traffic to the desired endpoints (real or virtual). 

A message proxy is deployed on a local or remote Virtualize Server, where it can receive messages to be processed by a virtual asset or passed to a live system (or to an internal endpoint, for advanced scenarios). These proxies can record traffic to emulate the captured behavior—enabling you to cut the dependencies on system components that are difficult to access. They support HTTP/S, JMS, MQ, and internal transports. 

With message proxies, the application under test (AUT) needs to be changed only once: to point to the proxy. Developers, QA, and Performance Test Engineers can then easily start and stop recording, direct traffic to specific virtual assets, and so on. Moreover, Parasoft CTP allows teams to set multiple proxy configurations for a single test environment component—enabling team members to select and provision the desired configuration on demand. 

Other benefits of using message proxies include: 

• Configurations are saved and managed like virtual assets, enabling you to reuse settings.
• Virtualize Server can host (deploy) multiple proxies on various connections and configurations.
• Each proxy can be enabled/disabled individually, which allows JMS and MQ connections to be disconnected so that messages are not consumed by the proxy (similar to Virtual Assets).
• Proxy settings can be managed on both the local Virtualize Server or a remote Virtualize Server via Virtualize Desktop. They can also be managed with CTP.
• Once you point the application under test to the proxy endpoint(s), you can start/stop recording on demand and modify the target service endpoint where the messages are being forwarded at any time without any impact on the AUT. For example, without touching the AUT, you can redirect messages from an actual service to a virtual asset (and that virtual asset can be hosted on the localhost server or a remote server).
• Multiple proxies can be configured on a single server (similar to Virtual Assets).

If you do not want to use message proxies, you can record traffic using the recording proxies discussed in Recording Traffic on the Fly.