If you want to perform additional processing after a post is received, Posting Acceptor can call a secondary post-processing URL with all the form data except the contents of the posted files uploaded from the client. In place of the content is a list of locations and sizes of the files posted to the server. You are able to edit the PostInfo file in order to specify the post-processing URL.
If a PostInfo file is not supplied, the option of specifying a post-processing URL is exposed in the WebPost API. You can also add it to the HTTP (uploadN.asp) sample page. The post-processing URL is specified as a part of the PostingURL after the PUBLISH keyword.
As part of the repost, the acceptor sends URL-encoded form fields of well known names, which list the locations where each of the uploaded files was saved. This form data is appended to any form data that already resides in the request. For each of the files uploaded and saved, the following will be passed on to the repost URL:
FileName=page
FilePath=c:\test
FileSize=32
FileExtention=htm
FileName=...