HTTP header info. What fields can I as a wap developer expect to receive fr

[ask_expert]

HTTP header info. What fields can I as a wap developer expect to receive from nokia handsets in the HTTP header?

[iswara]

Nokia WAP terminals send identification information and some information about their capabilities to the WAP gateway at the beginning of the session. This information is delivered in WSP headers. The WAP gateway receives the information and deliveres it further to the origin server in HTTP headers with additional information on its own capabilities. Here are two examples of HTTP headers sent by Nokia WAP Server (as a WAP gateway) to the origin server:

Example 1 (Nokia 6210).
--------------------
HEADER_LIST
Accept: application/vnd.wap.wtls-ca-certificate, application/vnd.wap.wmlscriptc, application/vnd.wap.wmlc, image/vnd.wap.wbmp, text/plain, text/vnd.wap.wmlscript, text/html, text/vnd.wap.wml
Accept-Language: fi
Accept-Charset: ISO-8859-1, UTF-8; Q=0.8, ISO-10646-UCS-2; Q=0.6 User-Agent: Nokia6210/1.0 (04.40)
Via: Nokia WAP Server 1.1.1 (build 2271A)
X-Network-Info: UDP,security=0
Accept-Encoding:
HEADERS
CONTENT
--------------------

Example 2 (Nokia 8310).
--------------------
HEADER_LIST
Accept: application/vnd.wap.wtls-ca-certificate, application/vnd.wap.wmlscriptc, application/x-nokiagamedata, application/vnd.wap.wmlc, image/vnd.wap.wbmp, text/x-vcalendar, text/x-vcard, text/plain, image/gif, text/vnd.wap.wmlscript, text/html, text/vnd.wap.wml
Accept-Language: fi
Accept-Charset: ISO-8859-1, UTF-8; Q=0.8, ISO-10646-UCS-2; Q=0.6
User-Agent: Nokia8310/1.0 (03.05)
Via: Nokia WAP Server 1.1.1 (build 2271A)
X-Network-Info: UDP,security=0
Accept-Encoding:
HEADERS
CONTENT
--------------------

So you will get a list of supported MIME types, preferred language for the content, a list of charsets, an user agent field (indicates the type of the terminal) etc.