Previously, the genesis block was only inserted when the database was
created, but it's possible due to rollback that the database is created
and the genesis block insert gets rolled back if the app is existed too
quickly. This commit modifies the logic to test the need for the genesis
block any time the database is loaded and insert it if necessary.
This commit provide support for a new nolisten option which disables
listening for incoming connections. It also disable listening when the
--connect option is used.
This commit disables the RPC server by default if no RPC username of
password is specified (either via the command line or through the config
file).
Closes#2.
This commit implements support for listening on multiple sockets and
changes the default listen code to use one socket per address family (IPv4
and IPv6).
In addition, it changes the default listen binding for the RPC server to
localhost so only local clients can connect to it.
There need to be several options added to allow customization of these
settings and those will be in future commits.
Fixes#3.
