I hope that someone can give me some advice. We've looked through the
documentation and samples but cannot find an exact match for our use case.
What we need to do is to listen on a socket and send data to the same
socket. This could be us satisfying the Request-Response Message Exchange
Pattern or could consist of (sending or receiving) asynchronous status
message updates, where no response is required.
There could be any number of requests coming in and an unrelated number of
messages going out. The system on the other end of the socket will use data
in the socket streams to correlate requests with responses - so we do not
have to send reponses in the same order as requests.
We know how this could be done in low level socket programming. However
we're tying to use Camel for all our integration, so if we can use Camel
components we will.
We have tried a couple of things. The first was to have a route where we
consume from a socket via a netty consumer, using inOut configuration.
Downstream we have a JMS queue where we put data and another where we read
responses to return as the response to the socket.
This works as long as there is an exact Request-Response pattern. However,
because there may be un correlated status messages, this does not meet all
We have thought about two asynchronous routes - one consuming from a socket
and writing to a queue, and another reading from the queue and writing to
the socket. This has the benefit of not tying us to just request-response.
However, the first socket endpoint to startup binds to the socket, and the
second gets the connection refused. The requirement is that the same socket
is used for reading and writing.
I'm sure someone else must have had to do this sort of thing in Camel
before, so we are just missing something. What can we do to meet our
requirements with Camel socket components (we use Netty but if another
component works we're happy with that.)? Do we try to share the endpoint
between the routes? Can we do this, and if so would it solve the problem of
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