Proposal Details

Similar to #20288 which added a DialContext method to ssh.Client, we propose to add a top-level convenience function DialContext to the crypto/ssh package which mirrors the existing Dial func:

func DialContext(ctx context.Context, network, addr string, config *ClientConfig) (*Client, error)

The DialContext func would accept a context.Context as its first argument, which would control the dial and handshake phases of the connection. Closing the Context after the connection is established would have no effect on the resulting Client. This is consistent with other DialContext uses in the Go standard library and this package.

We have a change ready to go (~33 SLOC), so happy to submit a CL when/if this is approved.