why socketChannel.write always return 0 ，server somethings can not send message to the client

["이희승 (Trustin Lee)"]

It means the client is not reading the data that the server wrote to the
client.  Maybe client is not working as expected?

On 08/12/2010 07:15 PM, tantom wrote:
> 
> hi all, i am writing an chat server application using netty. i use jdk1.6 
> 
> some times the client(C#) can't get message sent by the server
> 
> when i debug in the netty(v3.2.1)
> 
> in the NioWorker.writeNow(NioSocketChannel channel, int writeSpinCount)
> method
> 
> the channel.currentWriteEvent always has an the same event(it should be the
> first blocking write evt), so the message can't send to the client
> 
> and i debug to buf.getBytes(bufIdx, channel.socket,
> buf.writerIndex()-bufIdx) i found that socketChannel.write method always 
> 
> return 0, i am new to socket develop, it's that means server can't write to
> the client or something else?
> 
> the client still can send message to the server.
> 
> how to resolve this? or someone can tell me some point?
> 
> i don't know how this can happen again, it sometime happen.

-- 
what we call human nature in actuality is human habit
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