Improvise logging for Channel connection timeout on platform code

[tiholic]

Why?

I've been calling Realtime#channels#get#attach without calling Realtime#connect first
This iteratively tries to attach to the channel and on timeout, RealtimeChannelStatus will be set as suspended. I wasn't sure until paddybyers asked me whether I connected to the realtime instance in the first place!

Suggestion

Improvise VERBOSE/INFO logging on timeout and if realtime instance status is not connected to show:

attach timeout, realtime instance is not connected
retrying attach

NOTE: This enhancement must be done on platform code ably-java and ably-cocoa

┆Issue is synchronized with this Jira Task by Unito

[QuintinWillison]

This suggestion is one possible solution. There may be others (e.g. fail faster).

See internal conversation.

[ikbalkaya]

Hmm. I just went through conversation and there doesn't seem to be a decision on how to tackle this. Considering this is an issue rooting from the platform implementations I would say they should be handled there. WDYT @QuintinWillison ? If so I can create issues for corresponding platforms

[QuintinWillison]

@ikbalkaya yes, please create platform issues and link them back to this issue. This issue should remain open until those dependencies have been updated here.