connection reuse issue

[tanimasaini]

Hi,

I am using this library to make multiple http calls to a particular host:port. I have configured the client to use keep alive connections and I also send Connection: keep-alive header in the http request.

public static final HttpClient client = HttpClient.builder().threadCount(32)
.setChannelOption(ChannelOption.SO_KEEPALIVE, true)
.setChannelOption(ChannelOption.SO_REUSEADDR, true)
.setChannelOption(ChannelOption.ALLOCATOR, PooledByteBufAllocator.DEFAULT)
.followRedirects().build();

However I see that the sockets opened by my application goes on increasing and connections are in established state.

If I send a header Connection: Close in the http request, the sockets are closed and reponed and hence the number of sockets in established state dont increase. This is as expected.

I think due to some reason, the client library is keeping the connection alive but is unable to reuse that connection. Is there any configuration which I am missing? Or there can be a bug in http client code or netty code?

[timboudreau]

I was waiting for a generic connnection pool to be available in Netty to do connection reuse, which recently became available, and was backported to stable Netty 4.x - so that is now solvable.

In the meantime, I hate to say it, but use Connection: close. I'll probably have some time in a couple of weeks to get to this, but patches are welcome too.

[timboudreau]

FYI, you can see work in progress on this on the branch named pool

[simonhf]

How's the progress on the pool branch coming along?