- sendinv and sendaddress are sometimes being sent to connections that
haven't been established yet, resulting in complaints about stream
mismatch. The error should only be displayed once the connection has
been established and the remote node provides its stream number
- Missing renamed to PendingDownload
- PendingDownload now only retries 3 times rather than 6 to dowload an
object
- Added PendingUpload, replacing invQueueSize
- PendingUpload has both the "len" method (number of objects not
uploaded) as well as "progress" method, which is a float from 0
(nothing done) to 1 (all uploaded) which considers not only objects
but also how many nodes they are uploaded to
- PendingUpload tracks when the object is successfully uploaded to the
remote node instead of just adding an arbitrary time after they have
been send the corresponding "inv"
- Network status tab's "Objects to be synced" shows the sum of
PendingUpload and PendingDownload sizes
- sometimes a node would send an "inv" about an object but then not
provide it when requested. This could be that it expired in the
meantime or it was an attack or a bug. This patch will forget that the
object exists if was requested too many times and not received.
- remember what was requested from which node
- remember if it was received
- re-request object if we haven't received any new object for more than
a minute
- rely on dict quasi-random order instead of an additional shuffle
- request an object once per minute
- stop check after count objects have been found
- tries to avoid calling senddata it it would block receiveDataThread,
allowing fore more asynchronous operation
- request objects in chunks of 100 (CPU performance optimisation)
- moved logic into a Missing singleton
- shouldn't try to download duplicates anymore, only requests a hash
once every 5 minutes and not from the same host
- removed obsoleted variables
- the "Objects to be synced" in the Network tab should now be correct
- removed some checks which aren't necessary anymore in my opinion
- fix missing self in Throttle (thanks landscape.io)
- send buffer to send multiple commands in one TCP packet
- recv/send operation size now based on bandwith limit
- send queue limited to 100 entries
- buffer getdata commands to fill send queue, instead of waiting for the
data packet to arrive first (i.e. allow getdata to work asynchronously)
- SSL handshake would often fail, because verack packet was being sent
at the same time as the do_handshake was executed in a different
thread. This makes it so that do_handshake waits until verack is done
sending.
- also minor modifications in SSLContext initialisation
- fixes errors introduced in the earlier refactoring
- more variables moved to state.py
- path finding functions moved to paths.py
- remembers IPv6 network unreachable (in the future can be used to skip
IPv6 for a while)
