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When a new handler is applied on a connection, register a special packet
in the request queue to set the handler when all current requests receive
their answer.

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The connection may have been already added to writable events in poll, it
usefull to add it here only if the buffer was initialy empty.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1704 71dcc9de-d417-0410-9af5-da40c76e7ee4

At connection level, when packet parsing fails there is no packet instance
(in except block). As there is no meaning to log a packet when it is
malformed, remove this parameter from _packetMalformed().

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This exception is used only during packet decoding.

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Fix related tests.

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In writable(), the _send() call could have closed the connection so don't
close it again if aborted or don't disable write events polling has this is
already done.

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Remove hanlder methods for that packet in order to reveal if it happens in
reality, so ti could be fixed.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1694 71dcc9de-d417-0410-9af5-da40c76e7ee4

uuid variable is used both to contain peer uuid and one of the uuids sent
in message payload.

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The implementation lacks some checks around the handling of
setClusterState, so add a TODO about this so we can get rid of former
XXX comment.

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This call, whose return value is ignore, is just here to establish the
connection with master if it was cut.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1690 71dcc9de-d417-0410-9af5-da40c76e7ee4

Makes it thread-safe (with detailed explanation on for each method).
Makes it more efficient for unregister and registered uses.

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Also, make logging done when catching OperationFailure exception consistent
with logging done when catching PrimaryFailure exception.

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This does not change code flow:
- self.master_node is None when entering the loop for the first time
- there is no way to restart the loop other than a PrimaryFailure exception

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This is identical to what is done in master/app.py:run.

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This reduces the cost of invoking log method when the log line is not to
be emitted.
Also, don't put a space before a colon.

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This bug was introduced in r928 and causes caches invalidations to be
effectively no-ops.

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Ask/Answer packets are linked together in both direction.
The response flag is automaticaly assigned on the answer packet.
The special 'Error' packet can be used as an expected answer for any
non-ask packet.

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A disconnection case was calling the handler method before the close(), fix
it and factorise connection closure.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1676 71dcc9de-d417-0410-9af5-da40c76e7ee4

The NotifyNodeInformation packet was not always sent before connection
closure, call abort() to ensure the write buffer is flushed before closure
so the peer can understand that it is not a primary failure.

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Aborted connections are supposed to be closed but remains until the write
buffer is sent. Those connections must not be used for common operation
(broacast node information...).

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Allow override the defaults to run unit, functional or both test suites.

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