10:35 a.m.
I'm having a very strange problem sending a generated HTML file back to the
browser using `exchange.getResponseSender().send(s)`. It seems to work
fine if the content is a short bit of text like "Hello World", but the
content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but
it says the Content-Length is 0 and no content comes back. If I set the
content to a short String like I said, then the Content-Length is properly
set and the content comes back like expected.
Should I not be using `exchange.getResponseSender().send` for large amounts
of text?
I just updated to 1.4.10.Final hoping that it was a bug that was fixed
since 1.4.8.Final, but it's still happening.
Any insights would be greatly appreciated.
10:41 a.m.
Well, I just added an IoCallback and now I'm getting an error: Attempted to
write 144780 bytes however content-length has been set to 144772
This, I think, raises both a question and an issue:
Question: Should I not be setting the Content-Length myself even when using
exchange.getResponseSender().send?
Issue: Seems like a bug that without an IoCallback the error is just
absorbed and never logged anywhere.
On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt <matt(a)matthicks.com> wrote:
I'm having a very strange problem sending a generated HTML file
back to
the browser using `exchange.getResponseSender().send(s)`. It seems to work
fine if the content is a short bit of text like "Hello World", but the
content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but
it says the Content-Length is 0 and no content comes back. If I set the
content to a short String like I said, then the Content-Length is properly
set and the content comes back like expected.
Should I not be using `exchange.getResponseSender().send` for large
amounts of text?
I just updated to 1.4.10.Final hoping that it was a bug that was fixed
since 1.4.8.Final, but it's still happening.
Any insights would be greatly appreciated.
10:44 a.m.
I don't set a content-length myself when using that method to send text
(or binary) data.
-pete
--
(peter.royal|osi)(a)pobox.com - http://fotap.org/~osi
On Wed, Feb 8, 2017, at 10:41 AM, Hicks, Matt wrote:
> Question: Should I not be setting the Content-Length myself even when
> using exchange.getResponseSender().send?
> Issue: Seems like a bug that without an IoCallback the error is just
> absorbed and never logged anywhere.
> On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt
> <matt(a)matthicks.com> wrote:
>> I'm having a very strange problem sending a generated HTML file back
>> to the browser using `exchange.getResponseSender().send(s)`. It
>> seems to work fine if the content is a short bit of text like "Hello
>> World", but the content is 144,772 bytes and if I use Curl to test it
>> I get a 200 OK, but it says the Content-Length is 0 and no content
>> comes back. If I set the content to a short String like I said, then
>> the Content-Length is properly set and the content comes back like
>> expected.
>
>> Should I not be using `exchange.getResponseSender().send` for large
>> amounts of text?
>
>> I just updated to 1.4.10.Final hoping that it was a bug that was
>> fixed since 1.4.8.Final, but it's still happening.
>
Well, I just added an IoCallback and now I'm getting an error:
Attempted to write 144780 bytes however content-length has been set
to 144772
This, I think, raises both a question and an issue:
> Any insights would be greatly appreciated.
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undertow-dev(a)lists.jboss.org
10:46 a.m.
Are you manually setting the Content-Length? Someone had that issue before.
If you are using the send api it should be calculating that for you. The
different numbers make me thing its an encoding issue since bytes != length
of the string.
On Wed, Feb 8, 2017 at 11:44 AM, peter royal <peter.royal(a)pobox.com> wrote:
I don't set a content-length myself when using that method to
send text
(or binary) data.
-pete
--
(peter.royal|osi)(a)pobox.com - http://fotap.org/~osi
On Wed, Feb 8, 2017, at 10:41 AM, Hicks, Matt wrote:
Well, I just added an IoCallback and now I'm getting an error: Attempted
to write 144780 bytes however content-length has been set to 144772
This, I think, raises both a question and an issue:
Question: Should I not be setting the Content-Length myself even when
using exchange.getResponseSender().send?
Issue: Seems like a bug that without an IoCallback the error is just
absorbed and never logged anywhere.
On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt <matt(a)matthicks.com> wrote:
I'm having a very strange problem sending a generated HTML file back to
the browser using `exchange.getResponseSender().send(s)`. It seems to
work fine if the content is a short bit of text like "Hello World", but the
content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but
it says the Content-Length is 0 and no content comes back. If I set the
content to a short String like I said, then the Content-Length is properly
set and the content comes back like expected.
Should I not be using `exchange.getResponseSender().send` for large
amounts of text?
I just updated to 1.4.10.Final hoping that it was a bug that was fixed
since 1.4.8.Final, but it's still happening.
Any insights would be greatly appreciated.
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undertow-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/undertow-dev
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11:01 a.m.
Well, modifying my computation to do myString.getBytes("UTF-8").length
instead of myString.length resolved the issue. The silent failing still
has me concerned though.
On Wed, Feb 8, 2017 at 10:41 AM Hicks, Matt <matt(a)matthicks.com> wrote:
Well, I just added an IoCallback and now I'm getting an error:
Attempted
to write 144780 bytes however content-length has been set to 144772
This, I think, raises both a question and an issue:
Question: Should I not be setting the Content-Length myself even when
using exchange.getResponseSender().send?
Issue: Seems like a bug that without an IoCallback the error is just
absorbed and never logged anywhere.
On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt <matt(a)matthicks.com> wrote:
I'm having a very strange problem sending a generated HTML file back to
the browser using `exchange.getResponseSender().send(s)`. It seems to work
fine if the content is a short bit of text like "Hello World", but the
content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but
it says the Content-Length is 0 and no content comes back. If I set the
content to a short String like I said, then the Content-Length is properly
set and the content comes back like expected.
Should I not be using `exchange.getResponseSender().send` for large
amounts of text?
I just updated to 1.4.10.Final hoping that it was a bug that was fixed
since 1.4.8.Final, but it's still happening.
Any insights would be greatly appreciated.
11:05 a.m.
You shouldn't need to be setting the content length manually with that API.
I agree with the exception, Stuart might have some thoughts on that. There
was another discussion about hooking in different loggers to the default
exception handler as well as an easier way to override it. This issue could
be related to that?
On Wed, Feb 8, 2017 at 12:01 PM, Hicks, Matt <matt(a)matthicks.com> wrote:
Well, modifying my computation to do
myString.getBytes("UTF-8").length
instead of myString.length resolved the issue. The silent failing still
has me concerned though.
On Wed, Feb 8, 2017 at 10:41 AM Hicks, Matt <matt(a)matthicks.com> wrote:
> Well, I just added an IoCallback and now I'm getting an error: Attempted
> to write 144780 bytes however content-length has been set to 144772
>
> This, I think, raises both a question and an issue:
>
> Question: Should I not be setting the Content-Length myself even when
> using exchange.getResponseSender().send?
> Issue: Seems like a bug that without an IoCallback the error is just
> absorbed and never logged anywhere.
>
> On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt <matt(a)matthicks.com> wrote:
>
> I'm having a very strange problem sending a generated HTML file back to
> the browser using `exchange.getResponseSender().send(s)`. It seems to
> work fine if the content is a short bit of text like "Hello World", but
the
> content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but
> it says the Content-Length is 0 and no content comes back. If I set the
> content to a short String like I said, then the Content-Length is properly
> set and the content comes back like expected.
>
> Should I not be using `exchange.getResponseSender().send` for large
> amounts of text?
>
> I just updated to 1.4.10.Final hoping that it was a bug that was fixed
> since 1.4.8.Final, but it's still happening.
>
> Any insights would be greatly appreciated.
>
>
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6:44 p.m.
On Thu, Feb 9, 2017 at 4:01 AM, Hicks, Matt <matt(a)matthicks.com> wrote:
Well, modifying my computation to do
myString.getBytes("UTF-8").length
instead of myString.length resolved the issue. The silent failing still has
me concerned though.
You are much better off just letting undertow do it. If you do it like
that then you will end up turning the String into a byte array twice,
which is very expensive for large payloads (of course you could just
send the resulting byte array).
Stuart
On Wed, Feb 8, 2017 at 10:41 AM Hicks, Matt <matt(a)matthicks.com> wrote:
>
> Well, I just added an IoCallback and now I'm getting an error: Attempted
> to write 144780 bytes however content-length has been set to 144772
>
> This, I think, raises both a question and an issue:
>
> Question: Should I not be setting the Content-Length myself even when
> using exchange.getResponseSender().send?
> Issue: Seems like a bug that without an IoCallback the error is just
> absorbed and never logged anywhere.
>
> On Wed, Feb 8, 2017 at 10:35 AM Hicks, Matt <matt(a)matthicks.com> wrote:
>>
>> I'm having a very strange problem sending a generated HTML file back to
>> the browser using `exchange.getResponseSender().send(s)`. It seems to work
>> fine if the content is a short bit of text like "Hello World", but the
>> content is 144,772 bytes and if I use Curl to test it I get a 200 OK, but it
>> says the Content-Length is 0 and no content comes back. If I set the
>> content to a short String like I said, then the Content-Length is properly
>> set and the content comes back like expected.
>>
>> Should I not be using `exchange.getResponseSender().send` for large
>> amounts of text?
>>
>> I just updated to 1.4.10.Final hoping that it was a bug that was fixed
>> since 1.4.8.Final, but it's still happening.
>>
>> Any insights would be greatly appreciated.
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undertow-dev(a)lists.jboss.org
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6:42 p.m.
If you call send() with no arguments it will calculate the content
length for you. Otherwise it will not, as it is possible to generate a
response through multiple send() invocations.
If you have not provided a callback
io.undertow.io.DefaultIoCallback#CALLBACK is used, which should have
been logging exceptions at debug level, however it appears not to be.
I have filed https://issues.jboss.org/browse/UNDERTOW-988 and fixed
the issue upstream. The logging is only at DEBUG level though, so you
still won't see it by default. The reason for this is that in general
IoException's are caused by the remote client closing the connection
(or the connection getting broken somehow). If this is logged at a
higher level then it is trivial for a malicious remote client to
generate massive amounts of logging (by simply sending a request and
then closing the connection). This can be used to DOS a server by
filling up its disks with logs, and also causing massive amounts of
disk IO.
Stuart
On Thu, Feb 9, 2017 at 3:35 AM, Hicks, Matt <matt(a)matthicks.com> wrote:
I'm having a very strange problem sending a generated HTML file
back to the
browser using `exchange.getResponseSender().send(s)`. It seems to work fine
if the content is a short bit of text like "Hello World", but the content is
144,772 bytes and if I use Curl to test it I get a 200 OK, but it says the
Content-Length is 0 and no content comes back. If I set the content to a
short String like I said, then the Content-Length is properly set and the
content comes back like expected.
Should I not be using `exchange.getResponseSender().send` for large amounts
of text?
I just updated to 1.4.10.Final hoping that it was a bug that was fixed since
1.4.8.Final, but it's still happening.
Any insights would be greatly appreciated.
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undertow-dev mailing list
undertow-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/undertow-dev
2862
days inactive
2863
days old
7 comments
4 participants
participants (4)
-
Bill O'Neil -
Hicks, Matt -
peter royal -
Stuart Douglas