| 摘要 |
A CDN edge server process receives an HTTP message, takes a given action with respect to that message, and then forwards a modified version of the message to a target server, typically a server associated with a CDN customer. The process may include an associated intermediate processing agent (IPA) or a sub-processing thread to facilitate the given action. In one embodiment, the message is an HTTP POST, and the given action comprises the following: (i) recognizing the POST, (ii) removing given data from the POST, (iii) issuing an intermediate (or subordinate) request to another process (e.g., a third party server), passing the given data removed from the POST to the process, (iv) receiving a response to the intermediate request, (v) incorporating data received from or associated with the response into a new HTTP message, and (vi) forwarding the new HTTP message onto the target server. In this manner, the given data in the POST may be protected as the HTTP message “passes through” the edge server on its way from the client to the target (merchant) server. In an alternative embodiment, data extracted from the POST message is enhanced by passing the data to an externalized process and adding a derived value (such as a fraud risk score based on the data) back into the message.
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