SSLKEYLOGFILE pre-master secret log for TLS?

[Jason E. Aten]

I have wss websocket client that I need to decrypt the packets from in WireShark to establish time of delivery--to troubleshoot a slowdown.

Similar to the Chrome facility for dumping the TLS pre-master secret using the env variable SSLKEYLOGFILE, which

WireShark can then utilize, do the Go TLS libraries have a way of logging the secret that was used?

[psan...@gmail.com]

You can set the tls.Config.KeyLogWritter to write out that information in the same format: 
https://golang.org/pkg/crypto/tls/#Config.KeyLogWriter