On 21/05/2020 13:30, Prateek Kohli wrote:
> Hi,
>
> I debugged this further and the problem seems to be because of the below code
> in Http2UpgradeHandler class:
>
> private void closeIdleStreams(int newMaxActiveRemoteStreamId) throws
> Http2Exception {
> for (int i = maxActiveRemoteStreamId + 2; i <
> newMaxActiveRemoteStreamId; i += 2) {
> Stream stream = getStream(i, false);
> if (stream != null) {
> stream.closeIfIdle();
> }
> }
> maxActiveRemoteStreamId = newMaxActiveRemoteStreamId;
> }
>
> When we take 1st StreamId as 2147483641, the above loop takes around 4~5
> seconds to execute and hence, the response is delayed.
That is where I suspected the issue would be but hadn't got around to
confirming it. This will get fixed for the next release round (due in a
couple of weeks).
Mark
>
> Regards,
> Prateek Kohli
>
> -----Original Message-----
> From: Manuel Dominguez Sarmiento <m...@renxo.com>
> Sent: Thursday, May 21, 2020 3:34 PM
> To: Tomcat Users List <users@tomcat.apache.org>; Prateek Kohli
> <prateek.ko...@ericsson.com.INVALID>
> Subject: Re: Http2 tomact server taking time in responding when 1st StreamId
> is a large integer value like 2147483641
>
> I must say that we're also seeing weird, seemingly random response delays
> from Tomcat on HTTP/2 We haven't looked into it at such a low level though.
> We're currently on
> 9.0.35 but we've been seeing this on previous versions as well.
>
> *Manuel Dominguez Sarmiento*
>
> On 21/05/2020 05:32, Prateek Kohli wrote:
>>
>> Hello,
>>
>> Tomcat version : 9.0.29
>>
>> We are running a Tomcat Http2 Server and a Jetty http2 client.
>>
>> When we send 1^st request from Jetty client to tomcat server with
>> streamId number as 1, tomcat sends the WINDOW_UPDATE header and the
>> response in 1~2 milliseconds.
>>
>> Packet number 164 is the response in the below tcpdump.
>>
>> But when we send the 1st request from jetty client to tomcat server
>> with streamId as 2147483641, the 1^st response from tomcat comes after
>> almost 5 seconds
>>
>> And the response for subsequent requests comes within 1~2 milliseconds.
>>
>> In the below tcpdump it can be seen that the response packet number
>> 167 comes after almost 5 seconds from the tomcat server.
>>
>> Would you please be able to explain why the response from tomcat
>> server is getting delayed when the 1^st StreamId number is a large
>> integer i.e. 2147483641.
>>
>> Regards,
>>
>> Prateek Kohli
>>
>
>
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