julianknodt fe54721e31 derp: add pkt queue latency timer ... It would be useful to know the time that packets spend inside of a queue before they are sent off, as that can be indicative of the load the server is handling (and there was also an existing TODO). This adds a simple exponential moving average metric to track the average packet queue duration. Changes during review: Add CAS loop for recording queue timing w/ expvar.Func, rm snake_case, annotate in milliseconds, convert Signed-off-by: julianknodt <julianknodt@gmail.com>		2021-06-11 09:41:06 -07:00
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derphttp	derp{,/derphttp},magicsock: tell DERP server when ping acks can be expected	2021-03-12 09:55:02 -08:00
derpmap	derp/derpmap: add São Paulo (derp11)	2021-04-21 11:04:47 -07:00
derp_client.go	derp: return keep-alive message up to callers	2021-03-15 10:43:48 -07:00
derp_server.go	derp: add pkt queue latency timer	2021-06-11 09:41:06 -07:00
derp_test.go	derp: handle net.ErrClosed in TestSendFreeze	2021-04-12 15:23:36 -07:00
derp.go	wgengine/magicsock, derp, derp/derphttp: respond to DERP server->client pings	2021-03-09 13:56:13 -08:00