CODEWITHSUNDEEP
javanetty
Bhaskar
Bhaskar

Reputation: 7523

Integer encoder decoder for Netty

I want to stream a series of integers across a Netty channel. Right now , in my code channel.write(Integer.valueOf(val) , I get the error java.lang.IllegalArgumentException: unsupported message type: class java.lang.Integer which I understand is because I do not have any integer encoder /decoder as a handler in the pipeline. Is this correct? Do I have to write my own integer decoder or there is one available to use ? Some guidance around this topic will be extremely helpful.

Upvotes: 1

Views: 975

Answers (2)

Norman Maurer
Norman Maurer

Reputation: 23557

Yes this is the case... You can also just write it in a ChannelBuffer and then write the ChannelBuffer to the Channel.

Something like:

ChannelBuffer buf = ChannelBuffers.buffer(4);
buf.writeInt(Integer.valueOf(val));
channel.write(buf);

Upvotes: 2

stevevls
stevevls

Reputation: 10843

Yup, your understanding is correct. Without an appropriate FrameEncoder in your pipeline, Netty is going to throw up its hands and say it doesn't know how to deal with an Integer.

If you want to add an off-the-shelf component, you can add an ObjectEncoder and ObjectDecoder to your pipeline. Otherwise, you'll want to implement your own frame encoder and decoders.

Upvotes: 1

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