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Protocol

Overview​

The Protocol module contains the logic for the synchronization protocol.

The Polygon Edge uses libp2p as the networking layer, and on top of that runs gRPC.

GRPC for Other Nodes​

protocol/proto/v1.proto
service V1 {
    // Returns status information regarding the specific point in time
    rpc GetCurrent(google.protobuf.Empty) returns (V1Status);
    
    // Returns any type of object (Header, Body, Receipts...)
    rpc GetObjectsByHash(HashRequest) returns (Response);
    
    // Returns a range of headers
    rpc GetHeaders(GetHeadersRequest) returns (Response);
    
    // Watches what new blocks get included
    rpc Watch(google.protobuf.Empty) returns (stream V1Status);
}

Status Object​

protocol/proto/v1.proto
message V1Status {
    string difficulty = 1;
    string hash = 2;
    int64 number = 3;
}