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https://issues.apache.org/jira/browse/IMAP-374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Rusin updated IMAP-374:
-------------------------------

    Description: 
This description is invalid, please jump to #comment-13641558

I believe (based on some observations) that:

A) maximum client command line length in James IMAP is 8192 as defined in 
org.apache.james.protocols.netty.AbstractChannelPipelineFactory.MAX_LINE_LENGTH.

B) I do not think that IMAP RFC limits the line length, at least I did not find 
any reference of that.

C) James IMAP does not seem to reply with BAD when it sees a too long line.

D) Some clients send quite long lines (I just saw one about 23000 characters 
and sky is the limit) and they probably expect some answer, hanging 
indefinitely.

So:

1. If B is true, then we should not practically really limit in A; or rather 
the limit should be really high. And looks like 640K is not enough for everyone 
anymore ;)

2. Probably C should be fixed.

  was:
I believe (based on some observations) that:

A) maximum client command line length in James IMAP is 8192 as defined in 
org.apache.james.protocols.netty.AbstractChannelPipelineFactory.MAX_LINE_LENGTH.

B) I do not think that IMAP RFC limits the line length, at least I did not find 
any reference of that.

C) James IMAP does not seem to reply with BAD when it sees a too long line.

D) Some clients send quite long lines (I just saw one about 23000 characters 
and sky is the limit) and they probably expect some answer, hanging 
indefinitely.

So:

1. If B is true, then we should not practically really limit in A; or rather 
the limit should be really high. And looks like 640K is not enough for everyone 
anymore ;)

2. Probably C should be fixed.

    
> Strange problem with a huge request from client
> -----------------------------------------------
>
>                 Key: IMAP-374
>                 URL: https://issues.apache.org/jira/browse/IMAP-374
>             Project: James Imap
>          Issue Type: Bug
>          Components: Protocol
>            Reporter: Andrzej Rusin
>            Assignee: Eric Charles
>
> This description is invalid, please jump to #comment-13641558
> I believe (based on some observations) that:
> A) maximum client command line length in James IMAP is 8192 as defined in 
> org.apache.james.protocols.netty.AbstractChannelPipelineFactory.MAX_LINE_LENGTH.
> B) I do not think that IMAP RFC limits the line length, at least I did not 
> find any reference of that.
> C) James IMAP does not seem to reply with BAD when it sees a too long line.
> D) Some clients send quite long lines (I just saw one about 23000 characters 
> and sky is the limit) and they probably expect some answer, hanging 
> indefinitely.
> So:
> 1. If B is true, then we should not practically really limit in A; or rather 
> the limit should be really high. And looks like 640K is not enough for 
> everyone anymore ;)
> 2. Probably C should be fixed.

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