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tailscale/net/portmapper
Mihai Parparita 9cb332f0e2 sockstats: instrument networking code paths
Uses the hooks added by tailscale/go#45 to instrument the reads and
writes on the major code paths that do network I/O in the client. The
convention is to use "<package>.<type>:<label>" as the annotation for
the responsible code path.

Enabled on iOS, macOS and Android only, since mobile platforms are the
ones we're most interested in, and we are less sensitive to any
throughput degradation due to the per-I/O callback overhead (macOS is
also enabled for ease of testing during development).

For now just exposed as counters on a /v0/sockstats PeerAPI endpoint.

We also keep track of the current interface so that we can break out
the stats by interface.

Updates tailscale/corp#9230
Updates #3363

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
..
disabled_stubs.go all: update copyright and license headers 2 years ago
igd_test.go all: update copyright and license headers 2 years ago
pcp.go all: update tools that manage copyright headers 2 years ago
pcp_test.go all: update copyright and license headers 2 years ago
pcpresultcode_string.go all: update copyright and license headers 2 years ago
pmpresultcode_string.go all: update copyright and license headers 2 years ago
portmapper.go sockstats: instrument networking code paths 2 years ago
portmapper_test.go all: update copyright and license headers 2 years ago
upnp.go all: update copyright and license headers 2 years ago
upnp_test.go all: update copyright and license headers 2 years ago