Commit Graph

10 Commits

Author SHA1 Message Date
Felföldi Zsolt ca376ead88 les, light: LES/2 protocol version (#14970)
This PR implements the new LES protocol version extensions:

* new and more efficient Merkle proofs reply format (when replying to
  a multiple Merkle proofs request, we just send a single set of trie
  nodes containing all necessary nodes)
* BBT (BloomBitsTrie) works similarly to the existing CHT and contains
  the bloombits search data to speed up log searches
* GetTxStatusMsg returns the inclusion position or the
  pending/queued/unknown state of a transaction referenced by hash
* an optional signature of new block data (number/hash/td) can be
  included in AnnounceMsg to provide an option for "very light
  clients" (mobile/embedded devices) to skip expensive Ethash check
  and accept multiple signatures of somewhat trusted servers (still a
  lot better than trusting a single server completely and retrieving
  everything through RPC). The new client mode is not implemented in
  this PR, just the protocol extension.
2017-10-24 15:19:09 +02:00
Felix Lange 9e5f03b6c4 core/state: access trie through Database interface, track errors (#14589)
With this commit, core/state's access to the underlying key/value database is
mediated through an interface. Database errors are tracked in StateDB and
returned by CommitTo or the new Error method.

Motivation for this change: We can remove the light client's duplicated copy of
core/state. The light client now supports node iteration, so tracing and storage
enumeration can work with the light client (not implemented in this commit).
2017-06-27 15:57:06 +02:00
Felföldi Zsolt a5d08c893d les: code refactoring (#14416)
This commit does various code refactorings:

- generalizes and moves the request retrieval/timeout/resend logic out of LesOdr
  (will be used by a subsequent PR)
- reworks the peer management logic so that all services can register with
  peerSet to get notified about added/dropped peers (also gets rid of the ugly
  getAllPeers callback in requestDistributor)
- moves peerSet, LesOdr, requestDistributor and retrieveManager initialization
  out of ProtocolManager because I believe they do not really belong there and the
  whole init process was ugly and ad-hoc
2017-06-21 12:27:38 +02:00
Felix Lange c213fd1fd8 all: import "context" instead of "golang.org/x/net/context"
There is no need to depend on the old context package now that the
minimum Go version is 1.7. The move to "context" eliminates our weird
vendoring setup. Some vendored code still uses golang.org/x/net/context
and it is now vendored in the normal way.

This change triggered new vet checks around context.WithTimeout which
didn't fire with golang.org/x/net/context.
2017-03-22 20:49:15 +01:00
Felföldi Zsolt 525116dbff les: implement request distributor, fix blocking issues (#3660)
* les: implement request distributor, fix blocking issues
* core: moved header validation before chain mutex lock
2017-03-22 20:44:22 +01:00
Zsolt Felfoldi 93f9c023cc les: fixed selectPeer deadlock, improved request distribution
les/flowcontrol: using proper types for relative and absolute times
2017-01-06 04:34:31 +01:00
Zsolt Felfoldi af8a742d00 les: improved header fetcher and server statistics 2016-12-10 09:53:08 +01:00
Felix Lange b8bd9a71c8 all: update license information 2016-11-09 02:51:34 +01:00
Felix Lange be3865211c core/types: remove header accessors
These accessors were introduced by light client changes, but
the only method that is actually used is GetNumberU64. This
commit replaces all uses of .GetNumberU64 with .Number.Uint64.
2016-11-09 02:19:07 +01:00
Zsolt Felfoldi 9f8d192991 les: light client protocol and API 2016-11-09 02:12:53 +01:00