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Methodenübersicht
Modifizierer und TypMethodeBeschreibungvoidBecomeMonitor(String[] _rule, UInt32 _flags) Converts the connection into a monitor connection which can be used as a debugging/monitoring tool.
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Methodendetails
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BecomeMonitor
Converts the connection into a monitor connection which can be used as a debugging/monitoring tool. Only a user who is privileged on this bus (by some implementation-specific definition) may create monitor connections[5].Monitor connections lose all their bus names, including the unique connection name, and all their match rules. Sending messages on a monitor connection is not allowed: applications should use a private connection for monitoring.
Monitor connections may receive all messages, even messages that should only have gone to some other connection ("eavesdropping"). The first argument is a list of match rules, which replace any match rules that were previously active for this connection. These match rules are always treated as if they contained the special
eavesdrop='true'member.As a special case, an empty list of match rules (which would otherwise match nothing, making the monitor useless) is treated as a shorthand for matching all messages.
The second argument might be used for flags to influence the behaviour of the monitor connection in future D-Bus versions.
Message bus implementations should attempt to minimize the side-effects of monitoring — in particular, unlike ordinary eavesdropping, monitoring the system bus does not require the access control rules to be relaxed, which would change the set of messages that can be delivered to their (non-monitor) destinations. However, it is unavoidable that monitoring will increase the message bus's resource consumption. In edge cases where there was barely enough time or memory without monitoring, this might result in message deliveries failing when they would otherwise have succeeded.
- Parameter:
_rule- Match rules to add to the connection_flags- Not used, must be 0
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