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.
This commit is contained in:
Felföldi Zsolt
2017-10-24 15:19:09 +02:00
committed by Felix Lange
parent 6d6a5a9337
commit ca376ead88
34 changed files with 2056 additions and 488 deletions

View File

@ -17,6 +17,7 @@
package bloombits
import (
"context"
"math/rand"
"sync/atomic"
"testing"
@ -144,7 +145,7 @@ func testMatcher(t *testing.T, filter [][]bloomIndexes, blocks uint64, intermitt
quit := make(chan struct{})
matches := make(chan uint64, 16)
session, err := matcher.Start(0, blocks-1, matches)
session, err := matcher.Start(context.Background(), 0, blocks-1, matches)
if err != nil {
t.Fatalf("failed to stat matcher session: %v", err)
}
@ -163,13 +164,13 @@ func testMatcher(t *testing.T, filter [][]bloomIndexes, blocks uint64, intermitt
}
// If we're testing intermittent mode, abort and restart the pipeline
if intermittent {
session.Close(time.Second)
session.Close()
close(quit)
quit = make(chan struct{})
matches = make(chan uint64, 16)
session, err = matcher.Start(i+1, blocks-1, matches)
session, err = matcher.Start(context.Background(), i+1, blocks-1, matches)
if err != nil {
t.Fatalf("failed to stat matcher session: %v", err)
}
@ -183,7 +184,7 @@ func testMatcher(t *testing.T, filter [][]bloomIndexes, blocks uint64, intermitt
t.Errorf("filter = %v blocks = %v intermittent = %v: expected closed channel, got #%v", filter, blocks, intermittent, match)
}
// Clean up the session and ensure we match the expected retrieval count
session.Close(time.Second)
session.Close()
close(quit)
if retrievals != 0 && requested != retrievals {