Remove interface communication out of blockchain.py
into network.py. network.py handles protocol requests
for headers and chunks. blockchain.py continues to
handle their analysis and verification.
If an interface provides a header chain that doesn't
connect, it is dismissed, as per a previous TODO comment.
This removes a thread and another source of timeouts.
I see no performance issues with this when truncating the
blockchain.
Rename 'result' to 'header' for clarity.
This allows us to distinguish between connecting and connected
state in interface.py (used to be done in network.py but that
had other issues).
This means we don't switch to a connecting server, and get_interfaces()
does not report connecting ones.
Two callers of get_spendable_coins were removing frozen addrs
before calling. Put that functionality in the function.
We shouldn't be able to send_from a frozen address. This was
possible in the current release because logic assumed a two-element
tuple was returned when it is now three-element. Fix that too.
Command line options listunspent and createrawtransaction currently
ignore frozen addresses. I'm not sure that's right but I've preserved
that behaviour.
With this patch only the wallet class refers to self.frozen_addresses;
other clients use is_frozen() now.
Speedup mainly from writing to storage only once.
Make frozen_addresses a set in memory, as sets give cleaner
code and are more efficient.
Minor change in behaviour: command line freezing used to return
False if the address isn't in the wallet OR the address was already
frozen. Now it returns more like a success code: it returns False
only if the address isn't in the wallet regardless of frozen state.
Similarly for unfreezing.
ThomasV
Neil Booth
ThomasV