Could this be as simple as the default keepaliveTimeout = 15000 (i.e. 15s)
Andy
On 06/12/2015 11:20 AM, Christopher Schultz wrote:
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Maxim,
On 6/12/15 1:53 AM, Maxim Neshcheret wrote:
According to
http://docs.oracle.com/javase/6/docs/technotes/guides/net/http-keepali
ve.html
connections in HTTP 1.1
<http://docs.oracle.com/javase/6/docs/technotes/guides/net/http-keepal
ive.html%20connections%20in%20HTTP%201.1>
are persistent by default.
But if it is incorrect behavior in Java then maybe there is some
way or configuration in Tomcat to put Keep-alive parameter in the
response header?
I do call HttpURLConnection.disconnect() only when client is
stopped. Keep-alive is used for sure.
I would expect the connection to be kept open unless you call
disconnect. But you are creating a new HttpURLConnection each time and
then discarding it. I'm not sure how the connection pooling works
under the hood within the JVM. It used to be difficult to get the JVM
to release a connection and actually terminate the TCP/IP connection.
http://docs.oracle.com/javase/8/docs/technotes/guides/net/http-keepalive
.html
Pay close attention to the remarks about stream-handling.
Tomcat may close the connection under certain circumstances, usually
error-related. If you are getting 200 OK responses from Tomcat, then
I'm not sure why the TCP/IP connection would be dropped, unless Java
thinks that 30 seconds is too long of an idle time to keep those
connections open.
Thanks,
- -chris
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