How do I send a response for TCP requests (spring integration)?

I need something like this, for example in Can't send reply to UDP message but for TCP. Thus, the client message and the TCP server can send back a response like OK. For TCP, socket-expression = "@ inbound.socket" and destination-expression = "headers ['ip_packetAddress']" cannot be used.

This is what my config looks like now:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:int="http://www.springframework.org/schema/integration"
    xmlns:int-ip="http://www.springframework.org/schema/integration/ip"
    xmlns:int-event="http://www.springframework.org/schema/integration/ip"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
        http://www.springframework.org/schema/integration/ip http://www.springframework.org/schema/integration/ip/spring-integration-ip.xsd">

  <int:channel id="tcpSend"/>

  <int-ip:tcp-connection-factory id="client" type="client"/>

  <int-ip:tcp-connection-factory id="server" type="server" host="localhost" port="1234"/>

  <int-ip:tcp-outbound-channel-adapter id="tcpOutbound" channel="tcpSend"
                                   connection-factory="client"/>

  <int-ip:tcp-inbound-channel-adapter id="tcpInbound" channel="tcpReceive"
                                  connection-factory="server"/>

  <int:service-activator id="tcpHandler" input-channel="tcpReceive" output-channel="tcpSend"
                         ref="listener"/>
</beans>