3.0 Too many open connections.
21.9.20 ${client_flags}
The nature of the connection V8.10 and later
The ${client_flags} macro holds the flags specified by the ClientPortOptions option??™s
Modify parameter (?§24.9.27.7 on page 996). This ${client_flags} macro is given a value
only after a connection is made, because the Modify flags can vary by the family of the
connection. If no Modify flags were specified, ${client_flags} is given an empty string as its
value.
The value letters from the ClientPortOptions=Modify option are stored into this macro after
the connection is made. Each letter is separated from the others by a space, and capital
letters are doubled. That is, for example, if that option was declared like this:
ClientPortOptions=Modify=bcE
the value of the ${client_flags} macro would become:
b c EE
Capital letters are doubled so that they can be detected in rules. Recall that rules view their
workspace in a case-insensitive manner (that is, e is the same as E). Doubling allows the
LHS of rules to be designed like this:
R $* e $* ?†? match a lowercase e
R $* ee $* ?†? match an uppercase E
${client_flags} is not used in the default configuration file, but is available for you to use
in rules of your own design. Note that a $& prefix is necessary when you reference this
macro in rules (that is, use $&{client_flags}, not ${client_flags}).
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