Re: HTTPAPI -Header Parser

[Rainer Ross <rainer_ross@xxxxxx>]

   Hi Athar,
   when you are only interested on the header and you are on V7.1
   you can try this SQL-Statement:
   SELECT * FROM TABLE(SYSTOOLS.HTTPGETCLOBVERBOSE
   ('[1]http://google.de','<httpHeader connectTimeout="5000"
   readTimeout="5000">
     <header name="User-Agent" value="test"/></httpHeader>'))
    as Data;
   With this command you get a  ResponseMSG and a ResponseHTTPHeader in
   XML-Format
   like this:
   <?xml version="1.0" encoding="UTF-8" ?>
   <httpHeader responseCode="200">
       <responseMessage>OK</responseMessage>
       <header name="HTTP_RESPONSE_CODE" value="HTTP/1.1 200 OK"/>
       <header name="X-Frame-Options" value="SAMEORIGIN"/>
       <header name="Date" value="Sat, 06 Aug 2016 09:38:22 GMT"/>
       <header name="Content-Length" value="5062"/>
       <header name="P3P" value="CP=&quot;This is not a P3P policy! See
   [2]https://www.google.com/support/accounts/answer/151657?hl=en for more
   info.&quot;"/>
       <header name="X-XSS-Protection" value="1; mode=block"/>
       <header name="Expires" value="-1"/>
       <header name="Content-Encoding" value="gzip"/>
       <header name="Set-Cookie"
   value="NID=83=J-PNn924OjRBbR8Ybh6r_Bn8PDy94-IiRz2hugt9ykxxiIEiIo6V9dyiK
   8oWMiRASLPZG3qR0RDn5DkCbQDjzGiDsXFExFsP085YkWeaDgNFUyduRpk5RBXO68o1swk0
   ; expires=Sun, 05-Feb-2017 09:38:22 GMT; path=/; domain=.google.de;
   HttpOnly"/>
       <header name="Content-Type" value="text/html; charset=ISO-8859-1"/>
       <header name="Server" value="gws"/>
       <header name="Cache-Control" value="private, max-age=0"/>
   </httpHeader>
   Rainer
   Am 05.08.2016 um 20:01 schrieb Athar Iqbal:

   Hi,


   I am new to this forum, so please forgive me if I ask something that
   has already been asked. I did go through the archives and didn't find
   any information.


   My question is on header parser function in HTTPAPI. Currently,
   header_parse() function reads all the headers and puts them in the data
   structure which is available to the HEADERR4 module only.  In order to
   get the header information, we need to use http_header() function.
   Also, header_parse() goes through the complete response object to pull
   headers from it. Wouldn't it be faster, if it looks for <CRLF><CRLF>
   and stop the search after that?


   I am developing a generic framework to consume web services offered by
   different businesses such MelissaData or D&B. Developers on my team may
   or may not know all the headers coming back in the response object. I
   want to iterate though the all the header and put them in the list and
   return it back to the calling procedure.


   Challenge I am coming across is that there is no iterator that can get
   me all headers without specifying name. Also, could someone please
   explain, what is best use of USERDATA pointer in http_xproc()


   If someone has come across something like this, could you please share.
   If not, I would like to contribute to HTTPAPI by enhancing existing
   code and send it back to the team to see if it is acceptable to include
   in package.


   Again, I apologize in advance, if this has been already discussed and
   if you can point me to some resource.


   Athar


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Rainer Ross
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References

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