- From: Phillip Hallam-Baker <hallam@gmail.com>
- Date: Thu, 12 Jul 2012 13:39:29 -0400
- To: Julian Reschke <julian.reschke@gmx.de>
- Cc: James M Snell <jasnell@gmail.com>, Nico Williams <nico@cryptonector.com>, ietf-http-wg@w3.org
I am very big on legacy support. But 'I can't implement this new Web service efficiently unless I upgrade my server' is a much lower concern for me than 'I can't implement unless I upgrade' which in turn is much less of a concern than 'this won't work for granny with her IE4.0' The ability to put the integrity check at the end is nice, not being able to do that is not a concern for most Web services where the transactions are pretty small and easily buffered in memory. On Thu, Jul 12, 2012 at 1:09 PM, Julian Reschke <julian.reschke@gmx.de> wrote: > On 2012-07-12 19:00, James M Snell wrote: >> >> To provide one example... using the servlet API within Apache Tomcat >> 7... I can easily access trailers included in a post.. but there is no >> obvious means of including a trailer in the response... >> >> Given the input... >> >> POST /Testing/test HTTP/1.1 >> Host: localhost >> Transfer-Encoding: chunked >> Content-Type: text/plain >> Trailer: x-foo >> TE: chunked >> >> 4 >> ABCD >> 6 >> EFGHIJ >> 0 >> x-foo: test >> >> On the server side... >> >> protected void doPost( >> HttpServletRequest request, >> HttpServletResponse response) >> throws IOException { >> >> // outputs null since the trailer hasn't been parsed yet... >> System.out.println(request.getHeader("x-foo")); >> >> // consume the input >> InputStream in = request.getInputStream(); >> int r = -1; >> while((r = in.read(new byte[100])) > -1) {} >> >> // outputs the value of the x-foo trailer... so far so good... >> System.out.println(request.getHeader("x-foo")); >> >> // let's do a chunked response and try that... >> response.addHeader("Trailer", "x-foo"); >> OutputStream out = response.getOutputStream(); >> for (int n = 0; n < 10000; n++) { >> out.write('a'); >> } >> // x-foo is never included in the response... >> // there is no obvious means of including trailers >> // in chunked responses using the servlet api... >> response.addHeader("x-foo", "response"); >> } >> ... > > > > I have to say that I'm surprised that at least it works for trailers in a > HttpServletRequest... > > Best regards, Julian -- Website: http://hallambaker.com/
Received on Thursday, 12 July 2012 17:39:56 UTC