Editing NetKernel (section)

===Transports===
Transports are a mechanism used to introduce requests from outside of NetKernel to the NetKernel address space. Transports are available for the HTTP protocol, JMS ([[Java Message Service]]), and CRON. Other transports can be easily added as they are independent from the rest of NetKernel.

The role of the transport is to translate an external request based on one protocol into a NetKernel request with a URI and a specific verb (SOURCE, SINK, etc.) and then to send the returned representation back to the client via the supported protocol.

Two mappings are handled by a transport. The first is between the address space of the externally supported protocol to the internal NetKernel address space. And the second is between the verb or action specified externally into a NetKernel verb.

For example, in the case of the HTTP transport, the external address space is a sub-space of a URL. The following mapping illustrates this point.
<pre>http://www.mywebsite.com/publications/...
       
             |
             v

file:/src/publications/...</pre>

In addition, the HTTP protocol supports methods such as GET, PUT, HEAD, etc. which are mapped to NetKernel verbs.