Q:

What is the java config equivalent to tcp-outbound-gateway?

I have the following spring-integration XML config
<ip:tcp-outbound-gateway id="outboundClient"
        request-channel="requestChannel"
        reply-channel="string2ObjectChannel"
        connection-factory="clientConnectionFactory"
        request-timeout="10000"
        reply-timeout="10000"/>

How can I write the Java config equivalent of the above? 
I thought the equivalent would be 
@Bean
public TcpOutboundGateway outboundClient() {
    TcpOutboundGateway tcpOutboundGateway = new TcpOutboundGateway();
    tcpOutboundGateway.setConnectionFactory(clientConnectionFactory());
    tcpOutboundGateway.setRequiresReply(true);
    tcpOutboundGateway.setReplyChannel(string2ObjectChannel());
    tcpOutboundGateway.setRequestTimeout(10000);
    tcpOutboundGateway.setSendTimeout(10000);
    return tcpOutboundGateway;
}

But I couldn't find a way to set the request channel.
Any help would be appreciated.
Thank you

A:

Your config looks good, but you should know in addition that any Spring Integration Consumer component consists of two main objects: MessageHandler (TcpOutboundGateway in your case) and EventDrivenConsumer for subscriable input-channel or PollingConsumer if input-channel is Pollable.
So, since you already have the first, handling, part you need another consuming. For this purpose Spring Integration suggests to mark your @Bean with endpoint annotations:
@Bean
@ServiceActivator(inputChannel = "requestChannel")
public TcpOutboundGateway outboundClient() {

See more in the Spring Integration Reference Manual.
However to allow such a annotation process (or any other Spring Integration infrastructure) you have to mark your @Configuration with @EnableIntegration.
Also consider to use Spring Integration Java DSL to have more gain from JavaConfig.

