Re: [undertow-dev] Read request body in HttpHandler
RequestBufferingHandler is a performance enhancing handler that is designed to be used for
blocking requests, basically
it allows you to fully read the request before the request gets dispatched to a
(potentially limited) thread pool.
If you want to read the full body in a non blocking manner the easiest way is to just use
the following, it will read the full request into a buffer and then invoke the provided
callback:
HttpServerExchange.getRequestReceiver().receiveFullBytes((exchange, data) -> {
//do stuff with the data
},
(exchange, exception) -> {
//optional error handler
}
)
Stuart
----- Original Message -----
From: "Friso van Vollenhoven"
<f.van.vollenhoven(a)gmail.com>
To: undertow-dev(a)lists.jboss.org
Sent: Thursday, 11 February, 2016 11:12:11 PM
Subject: [undertow-dev] Read request body in HttpHandler
Hi all,
I'm not sure if this is the right channel to go for help, but there seems to
be no separate user list, so I'll take a shot here.
I need to create a HttpHandler that fully reads the request body and stores
it into a buffer or byte[] before ending the exchange. For this, I'm trying
to digest what Undertow's RequestBufferingHandler does.
It seems that I have to take care of the scenario where the handler is called
before the entire request body is available on the stream by doing the
following:
- read from the stream
- check whether I've hit the end of the stream when as many bytes as possible
have been read
- if not, register a listener on the stream and continue handling the request
from there
- if so, handle the request from the handler directly
- finally close the stream
Can someone assert that the above is correct?
Also, are there general pointers to what I'd like to achieve (read the
request body into a buffer)?
Many thanks, cheers,
Friso
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