[jira] Commented: (AVRO-285) request-only messages

["Doug Cutting (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860060#action_12860060 ] 

Doug Cutting commented on AVRO-285:
-----------------------------------

I've started looking into implementing this.  We still need a handshake to take place, so that client and server versions need not match exactly.  But, without a response, there's no way to make a piggybacked handshake.  So, I think, to implement this, we need to factor the handshake logic out of every request and response.

This can be done compatibly.  HTTP always sends a response, so with that transport there will always be a handshake response, and that's the only transport specified today.

For the Java implementation of this I thus intend to refactor handshaking.  I'll use a non-standard transport to test unidirectional messages, like SocketTransciever and SocketServer.

> request-only messages
> ---------------------
>
>                 Key: AVRO-285
>                 URL: https://issues.apache.org/jira/browse/AVRO-285
>             Project: Avro
>          Issue Type: New Feature
>          Components: spec
>            Reporter: Doug Cutting
>
> It might be useful to have a standard mechanism in Avro for transmitting messages that receive no response, not even an acknowledgement.

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