# Chained HA Proxy with delayed ACK Issue

**URL:** https://discourse.haproxy.org/t/chained-ha-proxy-with-delayed-ack-issue/3882
**Category:** Help!
**Created:** [June 3, 2019, 7:37am UTC](https://discourse.haproxy.org/t/chained-ha-proxy-with-delayed-ack-issue/3882 "2019-06-03T07:37:35Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![praveenkumar.2608](https://avatars.discourse-cdn.com/v4/letter/p/e79b87/32.png) [@praveenkumar.2608](https://discourse.haproxy.org/u/praveenkumar.2608)
#### Post date: [June 3, 2019, 7:37am UTC](https://discourse.haproxy.org/t/chained-ha-proxy-with-delayed-ack-issue/3882/1 "2019-06-03T07:37:35Z")

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Hi,

I have a haproxy setup as follow:

Client --\> Haproxy (LOCATION A)------\> HAProxy(LOCATION B)----\> Server.

I am uploading a file to the server, once the upload is completed, Server responds immediately with ACK which I can see it in pcap. But the ACK between Location B and LOCATION A is taking more than 10 secs which delays the response to a real client.

Is there any settings which need to be tweaked in HA Proxy or is there any kernal parameters need to be changed.

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### Author: ![lukastribus](https://avatars.discourse-cdn.com/v4/letter/l/7ea924/32.png) [@lukastribus](https://discourse.haproxy.org/u/lukastribus)
#### Post date: [June 3, 2019, 2:24pm UTC](https://discourse.haproxy.org/t/chained-ha-proxy-with-delayed-ack-issue/3882/2 "2019-06-03T14:24:39Z")

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Haproxy is forwarding TCP payload, not routing IP packets. Those TCP sessions terminate in the local kernel, you must look at the TCP sessions individually.

I suggest you go back to the drawing board and analyze whatever issue you have with that in mind; more likely than not this is not a TCP issue.