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tailscale/ipn/localapi
Amal Bansode 6de5b01e04
ipn/localapi: stop logging "broken pipe" errors (#18487)
The Tailscale CLI has some methods to watch the IPN bus for
messages, say, the current netmap (`tailscale debug netmap`).
The Tailscale daemon supports this using a streaming HTTP
response. Sometimes, the client can close its connection
abruptly -- due to an interruption, or in the case of `debug netmap`,
intentionally after consuming one message.

If the server daemon is writing a response as the client closes
its end of the socket, the daemon typically encounters a "broken pipe"
error. The "Watch IPN Bus" handler currently logs such errors after
they're propagated by a JSON encoding/writer helper.

Since the Tailscale CLI nominally closes its socket with the daemon
in this slightly ungraceful way (viz. `debug netmap`), stop logging
these broken pipe errors as far as possible. This will help avoid
confounding users when they scan backend logs.

Updates #18477

Signed-off-by: Amal Bansode <amal@tailscale.com>
2 days ago
..
cert.go all: remove AUTHORS file and references to it 5 days ago
debug.go all: remove AUTHORS file and references to it 5 days ago
debugderp.go all: remove AUTHORS file and references to it 5 days ago
disabled_stubs.go all: remove AUTHORS file and references to it 5 days ago
localapi.go ipn/localapi: stop logging "broken pipe" errors (#18487) 2 days ago
localapi_drive.go all: remove AUTHORS file and references to it 5 days ago
localapi_test.go all: remove AUTHORS file and references to it 5 days ago
pprof.go all: remove AUTHORS file and references to it 5 days ago
serve.go all: remove AUTHORS file and references to it 5 days ago
syspolicy_api.go all: remove AUTHORS file and references to it 5 days ago
tailnetlock.go all: remove AUTHORS file and references to it 5 days ago