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Evan Hunt authored
- the socket stat counters have been moved from socket.h to stats.h. - isc_nm_t now attaches to the same stats counter group as isc_socketmgr_t, so that both managers can increment the same set of statistics - isc__nmsocket_init() now takes an interface as a paramter so that the address family can be determined when initializing the socket. - based on the address family and socket type, a group of statistics counters will be associated with the socket - for example, UDP4Active with IPv4 UDP sockets and TCP6Active with IPv6 TCP sockets. note that no counters are currently associated with TCPDNS sockets; those stats will be handled by the underlying TCP socket. - the counters are not actually used by netmgr sockets yet; counter increment and decrement calls will be added in a later commit.
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