ClientCall current only prints out the method descriptor, which is not so helpful. It would be useful to include some more detail. Here are some ideas:

• The deadline
• whether the call has been started, half closed, or cancelled
• whether initial headers have been received, or trailers recieved
• what was the context for the call
• the channel id of the call
• if the channel has a subchannel assigned, the subchannel id or remote host name
• Security level (if available)
• Wait for ready or not

These would be useful when printing out the call, or including the call details in error messages, or generally.