I have been reading the EventType.READ explanation over and over again,
and now I have even more questions.
1) It says I should return false or throw an IOException when I get EOF.
However, the event method has a void return type, so I don't know how to
do the first. And if it's not unexpected it's not an error condition,
and I don't want the error event to be invoked, so I can't throw an
IOException. What do I do?
2) I keep getting READ events after reading all data from the stream
(EOF reached). Now I don't want to close the event because I still want
to write stuff, but I can't just return from the read event because I'll
get another, causing a busy waiting loop. The bytes that need to be
written arrive sporadically. How do I stop tomcat from causing READ
events after the EOF while keeping the event open until the output is
done as well.
Regards,
Sebastiaan
Sebastiaan van Erk wrote:
Hi,
The pages on Comet say the following about the read event:
EventType.READ: This indicates that input data is available, and that
one read can be made without blocking. The available and ready methods
of the InputStream or Reader may be used to determine if there is a
risk of blocking: the servlet should read while data is reported
available, and can make one additional read without blocking. When
encountering a read error or an EOF, the servlet MUST report it by
either returning false or throwing an exception such as an
IOException. This will cause the error event to be invoked, and the
connection will be closed. It is not allowed to attempt reading data
from the request object outside of the execution of this method.
However, I just got a READ event where available() returns 0 (because
the next byte to read would be -1 indicating the end of the stream).
Is there any way to test for the end of the stream without calling
read() ?
Regards,
Sebastiaan
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