Data Transformation Engine HTTP Adapter Reference Guide

Chapter 4 - Syntax Summary Example Files

HTTP Adapter Reference Guide

where adaptercommands are the HTTP adapter commands in the List of

Commands.

The format for specifying a command file is:

M4HTTP_OPT=@filename.txt

where filename.txt is the file containing HTTP adapter commands. Always

precede the command file name with @.

HTTP Header Adapter Command (–HDR) Example

Process cookies by mapping Set-Cookie headers to Cookie headers. This

example uses the Header adapter command (–

HDR), Http.mtt type tree, and

HTTPGetCookie map. It retrieves a form that sets cookies and then submits the

form. The form includes user name and password fields typical of the forms found

on many web sites and uses cookies to maintain this login information.

In the input card, the GET > Source > Command in the Source setting uses the

-HDR command to map the cookies in the Set-Cookie headers on the form that is

returned.

In the output card, the PUT > Target > Command in the Target setting

manages the cookie state information by mapping the Set-Cookie headers in the

form to Cookie headers. The -HDR command indicates that the user is providing

the headers; the target is form data submitted with:

Content-Type application/x-www-form-url-encoded.

See RFC 2109 for more information about cookies. For more information about

submitting forms and the x-www-form-url-encoded format, see Section 17 of the

HTML 4.0 specification at http://www.w3.org/TR/REC-html40/.