At 10:16 pm +0200 10/6/03, Andre Rombauts wrote:
Thanks Dave: working...!
But anyway can someone give an example of HTTPHeaders usage?



When you use get or post with an http url, the libUrl library script constructs a minimal set of headers. For example, if you use the following command:

get url "http://192.168.123.7/cgi-bin/echo3.mt";


this is the request that is sent to the http server:


GET /cgi-bin/echo3.mt HTTP/1.1
Host: 192.168.123.7
User-Agent: Revolution (MacOS)

The first line is the "request" line. The 2nd and 3rd are the headers.

If you wanted to change the User-Agent header to your own custom name, you could do this:

set the httpHeaders to "User-Agent: DavesApp 1.0"
get url "http://192.168.123.7/cgi-bin/echo3.mt";

and the request sent to the server will look like this:

GET /cgi-bin/echo3.mt HTTP/1.1
Host: 192.168.123.7
User-Agent: DavesApp 1.0

Setting multiple header lines is done in one go like this:

put  "User-Agent: DavesApp 1.0" into tHeaders
put return & "Connection: close" after tHeaders
set the httpHeaders to tHeaders
get url "http://192.168.123.7/cgi-bin/echo3.mt";

The request will look like this:

GET /cgi-bin/echo3.mt HTTP/1.1
Host: 192.168.123.7
User-Agent: DavesApp 1.0
Connection: close

(The Connection header asks the server to close the connection immediately after the respone has been sent.)

The standard http headers are described in the http rfc.

<http://www.w3.org/Protocols/rfc2616/rfc2616.html>

In addition, you can create custom headers which you can use in custom web applications. A CGI script on the server can respond depending on the value of a particular header.

For example:

set the httpheaders to "MyAction: newSessionKey"

This would have no effect unless the server or server script were specifically looking for this header.

Cheers
Dave
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