Grocery Sync app times out (trying to connect to Sync server)

[Sam Weber]

Have set up Couchbase server and Sync Gateway on an Ubuntu 14.04 VM following the relevant instruction on the Couchbase website.  Have modified the Swift app to point to the VM's Sync Gateway.  Always get the following error (even when I try the Objective-C version of the app):

The request timed out. (error=Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={NSErrorFailingURLStringKey=https://192.168.1.12:4984/grocery-sync/_local/212cf102b9472e09ec096c744c6a205e4542f03e, _kCFStreamErrorCodeKey=-2102, NSErrorFailingURLKey=https://192.168.1.12:4984/grocery-sync/_local/212cf102b9472e09ec096c744c6a205e4542f03e, NSLocalizedDescription=The request timed out., _kCFStreamErrorDomainKey=4, NSUnderlyingError=0x16f394a0 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=-2102, NSErrorFailingURLStringKey=https://192.168.1.12:4984/grocery-sync/_local/212cf102b9472e09ec096c744c6a205e4542f03e, NSErrorFailingURLKey=https://192.168.1.12:4984/grocery-sync/_local/212cf102b9472e09ec096c744c6a205e4542f03e, NSLocalizedDescription=The request timed out., _kCFStreamErrorDomainKey=4}}})