> Could you please be clear when you say "entity headers": do you mean
> HTTP headers? I have a Tomcat 6.0.20 install right in front of me that
> definitely does allow the servlet (in my case, a simple JSP that dumps
> requests) to read the HTTP headers. HTTP GET parameters are also
> correctly provided to the servlet.
We were discussing RFC 2616. Entity-headers and entity-body are terms
directly from the RFC and are defined therein. No, they are not the same
as HTTP headers, though they are contained in the HTTP headers:
7.1 Entity Header Fields
Entity-header fields define metainformation about the entity-body or,
if no body is present, about the resource identified by the request.
Some of this metainformation is OPTIONAL; some might be REQUIRED by
portions of this specification.
entity-header = Allow ; Section 14.7
| Content-Encoding ; Section 14.11
| Content-Language ; Section 14.12
| Content-Length ; Section 14.13
| Content-Location ; Section 14.14
| Content-MD5 ; Section 14.15
| Content-Range ; Section 14.16
| Content-Type ; Section 14.17
| Expires ; Section 14.21
| Last-Modified ; Section 14.29
| extension-header
extension-header = message-header
The extension-header mechanism allows additional entity-header fields
to be defined without changing the protocol, but these fields cannot
be assumed to be recognizable by the recipient. Unrecognized header
fields SHOULD be ignored by the recipient and MUST be forwarded by
transparent proxies.
>
>> example.com/persons/6cd79223-3585-4618-ab78-1c20db09c535
>
> I didn't check to see if the path info is available for PUT requests.
> For that, I'll have to write a separate servlet. I'm willing to write a
> test if this is the behavior you are experiencing.
>
> So, please, what is it that Tomcat is apparently hiding from your servlet?
Here are the headers for a PUT request which includes form parameters.
They are the string immediately below the cookie information, beginning
with "emailAddress":
http://localhost:12344/json/members/1b35d32f-714d-4393-b8c2-b4805e0c7a13
PUT /json/members/1b35d32f-714d-4393-b8c2-b4805e0c7a13 HTTP/1.1
Host: localhost:12344
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US;
rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
X-Requested-With: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: http://localhost:12344/
Content-Length: 297
Cookie: JSESSIONID=dexcmg3b1r45
emailAddress=bozo%40clown.com&title=Head%20Clown&nameGiven=Bozo&namesMiddle=The&nameFamily=Clown&namePreferred=Bozo&gender=Male&password=&passwordConfirm=&id=1b35d32f-714d-4393-b8c2-b4805e0c7a13&facebookName=bozo.the.clown&twitterName=i.am.bozo&flickrName=bozos.circus&linkedinName=mr.clown.to.you
HTTP/1.x 201 Created
Content-Length: 82
Content-Type: text/plain; charset=UTF-8
X-Lift-Version: 1.1-M4
Server: Jetty(6.1.22)
As requested by a previous poster, I used Wireshark to examine the packets
as they arrived at the server and indeed the form parameters were included
in the packets.
I also added a Request Dumper Valve to Tomcat and parsed the logs to find
the content of the Request. The HTTP headers were there, minus the line
with the parameters. I can find no justification in RFC 2616 for stripping
this line out -- it is part of the entity-headers as mentioned above, and
the RFC also discusses transparency, stating that headers not included in
the standard list should be passed through. On a POST request, which is
virtually identical to the above, they appear in the request dump.
I may be wrong, but it seems to me that Tomcat is stripping those headers
out, thus forcing me to use POST even though the correct method should be
PUT for what I'm intending.
Chas.
>
> - -chris
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