HTTPS All Connections in Use

[MattW]

When switching from version 4 to version 5 on a fairly busy site, we see ALL the HTTPS connections get used up.

I increased the 500 to 1,000, and after a short while, all 1,000 were in use as well.

Is there anything that needs to be changed settings wise when going from version 4 to version 5, specifically for sites running HTTPS?

 

[mistwang]

It could be due to HTTP/2 need to keep one connection open to each user for longer time.
Please check the number of established HTTPS connection with command

netstat -an | grep 443 | grep ESTA | wc

if it is pretty close to the number in the real time status, it is not a bug. Otherwise, we need to check our statistics related code.

We either need to reduce the HTTP/2 keepalive timeout (code change required), or increase the limit of HTTPS connections (configuration change).

 

[MattW]

Thanks, we will have to schedule some time to switch over to 5 again and check.

 

[MattW]

We are currently testing this now on 5.0.2