* les: fix crasher in NodeInfo when running as server
The ProtocolManager computes CHT and Bloom trie roots by asking the
indexers for their current head. It tried to get the indexers from
LesOdr, but no LesOdr instance is created in server mode.
Attempt to fix this by moving the indexers, protocol creation and
NodeInfo to a new lesCommons struct which is embedded into both server
and client.
All this setup code should really be cleaned up, but this is just a
hotfix so we have to do that some other time.
* les: fix commons protocol maker
This PR enables the indexers to work in light client mode by
downloading a part of these tries (the Merkle proofs of the last
values of the last known section) in order to be able to add new
values and recalculate subsequent hashes. It also adds CHT data to
NodeInfo.
* backends: increase gaslimit in order to allow tests of large contracts
* backends: increase gaslimit in order to allow tests of large contracts
* backends: increase gaslimit in order to allow tests of large contracts
This PR implements les.freeClientPool. It also adds a simulated clock
in common/mclock, which enables time-sensitive tests to run quickly
and still produce accurate results, and package common/prque which is
a generalised variant of prque that enables removing elements other
than the top one from the queue.
les.freeClientPool implements a client database that limits the
connection time of each client and manages accepting/rejecting
incoming connections and even kicking out some connected clients. The
pool calculates recent usage time for each known client (a value that
increases linearly when the client is connected and decreases
exponentially when not connected). Clients with lower recent usage are
preferred, unknown nodes have the highest priority. Already connected
nodes receive a small bias in their favor in order to avoid accepting
and instantly kicking out clients.
Note: the pool can use any string for client identification. Using
signature keys for that purpose would not make sense when being known
has a negative value for the client. Currently the LES protocol
manager uses IP addresses (without port address) to identify clients.
* swarm: Added lightnode flag
Added --lightnode command line parameter
Added LightNode to Handshake message
* swarm/config: Fixed variable naming
* cmd/swarm: Changed BoolTFlag to BoolFlag for SwarmLightNodeEnabled
* swarm/network: Changed logging
* swarm/network: Changed protocol version testing
* swarm/network: Renamed DefaultNetworkID variable to TestProtocolNetworkID
* swarm/network: Bumped protocol version
* swarm/network: Changed LightNode handhsake test to table driven
* swarm/network: Changed back TestProtocolVersion to 5 for now
* swarm/network: Moved the test configuration inside the test function scope
