two way communication (TCP, no_nio)

[olegtikhonov]

Hello experts,
I'm newbie using SI-IP, so here a scenario when I need you advice.

i. Server waits for the connection;
ii. Client connects to the server;
iii. Client sends specific message (request);
iv. Server checks the message, and if a message is the right one, sends in return, a file contaxt as a stream;
v. Client gets the file context & sends to the server 'OKEY' msg.

It's first issue I'm looking forward :-).

Another one, is about reconnecting or watch-dogging, i.e. a client side. How can I set up some property (may be) or write some code to be able to control/cope a reconnection.

Thank you in advance,

Oleg

[Gary Russell]

See the tcp-client-server sample https://github.com/SpringSource/spri...-client-server

On the client side it uses a tcp-outbound-gateway (which is a request/reply endpoint).

Depending on the format of the message, you may need to supply a custom (de)serializer; a few standard serializers are provided. (De)Serializers are explained here... http://static.springsource.org/sprin...tion-factories

For connection reconnecting after a failure, you can add a Retry Advice to the gateway (http://static.springsource.org/sprin...r-advice-chain) and the connection will be re-established after a send fails.

[olegtikhonov]

Hi Gary!
Thanks for the answer.

Will check it out.

[olegtikhonov]

Gary,
What is a best approach for:
1. I have to be aware of client connection/disconnection(s); the same on server side;
2. If something wrong happens is there some way to reconnect?
3. How to get SI IP events? Is it possible?

Thanks in advance,
Oleg

[Gary Russell]

There is a new 3.0 feature where Application Events are emitted for connections...

http://static.springsource.org/sprin...whats-new.html

3.0 is not released yet (and won't be for quite some time), but the feature is available in the 3.0.0.M1 milestone release...

http://www.springsource.org/node/3813

There is no explicit way to reconnect; the connection will be re-established on the next send.

[olegtikhonov]

Looks awesome !!!
Thanks!

BR,
Oleg