This commit modifies the input message handler so that when a remote peer
sends a block, no further messages from that peer are accepted until the
block has been fully processed and therefore known good or bad. This
helps prevent a malicious peer from queueing up a bunch of bad blocks
before disconnecting (or being disconnected) and wasting memory.
Additionally, this behavior is depended on by at least the block
acceptance test tool as the reference implementation processes blocks in
the same thread and therefore blocks further messages until the block has
been fully processed as well.
The commit reworks the server statup and shutdown sequence to ensure the
server can always shutdown cleanly. The peer code depends on being able
to send messages to the address and block managers, so they need to have
their lifecycle tied to the peer handler to prevent issues with
asynchronous shutdown order.
Although not required if the proxy set is indeed Tor, setting this option
does the following:
- Sends DNS queries over the Tor network (during dns seed lookup). This
stops your IP from being leaked via DNS.
- Does not disable the listening port. This allows the hidden services
feature of Tor to be used.
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.
