Alan Conway created PROTON-772:

             Summary: Remove all direct printing to stdout and stderr.
                 Key: PROTON-772
             Project: Qpid Proton
          Issue Type: Bug
          Components: proton-c
    Affects Versions: 0.8
            Reporter: Alan Conway
            Assignee: Alan Conway

A library should never, ever print anything directly to stdout/stderr unless 
explicitly requested to do so, as it may be linked with programs that need to 
control what they output to stdout/err or programs that have no stdout/err at 

Failures should be raised  via the API error mechanism with appropriate message 
strings that the caller can display as they see fit. Informational log messages 
should be logged in a way that the caller can send them where they want or turn 
them off if they want.

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