Brad Fitzpatrick 366b3d3f62 ipn{,/ipnserver}: delay JSON marshaling of ipn.Notifies
If nobody is connected to the IPN bus, don't burn CPU & waste
allocations (causing more GC) by encoding netmaps for nobody.

This will notably help hello.ipn.dev.

Updates tailscale/corp#1773

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-05-10 14:36:27 -07:00
..
2020-12-30 17:33:02 -08:00