snowflake/common/websocketconn
David Fifield 3df514ae29 Call WriteMessage directly in websocketconn.Conn.Write.
In the client←server direction, this hits a fast path that avoids
allocating a messageWriter.
https://github.com/gorilla/websocket/blob/v1.5.0/conn.go#L760

Cuts the number of allocations in half in the client←server direction:

	$ go test -bench=BenchmarkReadWrite -benchmem -benchtime=5s
	BenchmarkReadWrite/c←s_150-4              597511             13358 ns/op          11.23 MB/s       33709 B/op          2 allocs/op
	BenchmarkReadWrite/s←c_150-4              474176             13756 ns/op          10.90 MB/s       34968 B/op          4 allocs/op
	BenchmarkReadWrite/c←s_3000-4             156488             36290 ns/op          82.67 MB/s       68673 B/op          5 allocs/op
	BenchmarkReadWrite/s←c_3000-4             190897             34719 ns/op          86.41 MB/s       69730 B/op          8 allocs/op
2022-11-16 13:48:34 -07:00
..
websocketconn.go Call WriteMessage directly in websocketconn.Conn.Write. 2022-11-16 13:48:34 -07:00
websocketconn_test.go Benchmark for websocketconn.Conn read/write. 2022-11-16 13:48:34 -07:00