Fix Proximity's substream request process so only the first attempt to request actually goes through, even if it has to be deferred while waiting for the base stream.
Fix Proximity's substream request process so only the first attempt to request actually goes through, even if it has to be deferred while waiting for the base stream.

sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata,sirikata/sirikata