Bring in refactored p2p sentry interface and adjust downloader for it (#1497)

* Initial commit

* Add sentry gRPC interface

* p2psentry directory

* Update README.md

* Update README.md

* Update README.md

* Add go package

* Correct syntax

* add external downloader interface (#2)

* Add txpool (#3)

* Add private API (#4)

* Invert control.proto, add PeerMinBlock, Separare incoming Tx message into a separate stream (#5)

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Use new p2psentry interface

* Remove

* Fix lint

* Fix lint

* Separate upload messages into its own stream (#6)

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Add header upload

* Remove

* Add upload of block headers

* Add block bodies upload

* Fix lint

* Bugfix for blockBodies

* Fix for body upload logging

* Print peerId for GetBlockHeaders

* Invoke block hashes stage to enable block body upload

* Fix test

* Fix stuck bodies download

Co-authored-by: Artem Vorotnikov <artem@vorotnikov.me>
Co-authored-by: b00ris <b00ris@mail.ru>
Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

Author: 4 people

Makefile

@@ -76,9 +76,9 @@ integration:
 	@echo "Run \"$(GOBIN)/integration\" to launch integration tests."
 
 headers:
-	$(GOBUILD) -o $(GOBIN)/headers ./cmd/headers
+	$(GOBUILD) -o $(GOBIN)/headers -tags 'mdbx' ./cmd/headers
 	@echo "Done building."
-	@echo "Run \"$(GOBIN)/integration\" to run headers download PoC."
+	@echo "Run \"$(GOBIN)/headers\" to run headers download PoC."
 
 db-tools:
 	go mod vendor; cd vendor/github.com/ledgerwatch/lmdb-go/dist; make clean mdb_stat mdb_copy mdb_dump mdb_load; cp mdb_stat $(GOBIN); cp mdb_copy $(GOBIN); cp mdb_dump $(GOBIN); cp mdb_load $(GOBIN); cd ../../../../..; rm -rf vendor