grpc-websocket-proxy
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[Bug] Leak
You call io.Pipe() at
https://github.com/tmc/grpc-websocket-proxy/blob/673ab2c3ae75cc01952b84b88590e30e75dcf395/wsproxy/websocket_proxy.go#L186
then you lose it at
https://github.com/tmc/grpc-websocket-proxy/blob/673ab2c3ae75cc01952b84b88590e30e75dcf395/wsproxy/websocket_proxy.go#L188
(When error happens at http.NewRequestWithContext you don't close requestBodyW and responseBodyW)
io.Pipe docs https://pkg.go.dev/io#Pipe