feat: make recv queue size configurable for chainsync/blockfetch

protocol/blockfetch/blockfetch.go

@@ -92,6 +92,7 @@ type Config struct {
 	RequestRangeFunc  RequestRangeFunc
 	BatchStartTimeout time.Duration
 	BlockTimeout      time.Duration
+	RecvQueueSize     int
 }
 
 // Callback context
@@ -168,3 +169,11 @@ func WithBlockTimeout(timeout time.Duration) BlockFetchOptionFunc {
 		c.BlockTimeout = timeout
 	}
 }
+
+// WithRecvQueueSize specifies the size of the received messages queue. This is useful to adjust
+// the number of blocks that can be fetched at once when acting as a client
+func WithRecvQueueSize(size int) BlockFetchOptionFunc {
+	return func(c *Config) {
+		c.RecvQueueSize = size
+	}
+}

protocol/blockfetch/client.go

@@ -75,6 +75,9 @@ func NewClient(protoOptions protocol.ProtocolOptions, cfg *Config) *Client {
 		StateMap:            stateMap,
 		InitialState:        StateIdle,
 	}
+	if c.config != nil {
+		protoConfig.RecvQueueSize = c.config.RecvQueueSize
+	}
 	c.Protocol = protocol.New(protoConfig)
 	return c
 }

protocol/blockfetch/server.go

@@ -57,6 +57,9 @@ func (s *Server) initProtocol() {
 		StateMap:            StateMap,
 		InitialState:        StateIdle,
 	}
+	if s.config != nil {
+		protoConfig.RecvQueueSize = s.config.RecvQueueSize
+	}
 	s.Protocol = protocol.New(protoConfig)
 }
 

protocol/chainsync/chainsync.go

@@ -206,6 +206,7 @@ type Config struct {
 	IntersectTimeout   time.Duration
 	BlockTimeout       time.Duration
 	PipelineLimit      int
+	RecvQueueSize      int
 }
 
 // Callback context
@@ -320,3 +321,11 @@ func WithPipelineLimit(limit int) ChainSyncOptionFunc {
 		c.PipelineLimit = limit
 	}
 }
+
+// WithRecvQueueSize specifies the size of the received messages queue. This is useful to adjust
+// the number of pipelined messages that can be supported when acting as a server
+func WithRecvQueueSize(size int) ChainSyncOptionFunc {
+	return func(c *Config) {
+		c.RecvQueueSize = size
+	}
+}

protocol/chainsync/client.go

@@ -112,6 +112,9 @@ func NewClient(
 		StateContext:        stateContext,
 		InitialState:        stateIdle,
 	}
+	if c.config != nil {
+		protoConfig.RecvQueueSize = c.config.RecvQueueSize
+	}
 	c.Protocol = protocol.New(protoConfig)
 	return c
 }

protocol/chainsync/server.go

@@ -75,6 +75,9 @@ func (s *Server) initProtocol() {
 		StateContext:        s.stateContext,
 		InitialState:        stateIdle,
 	}
+	if s.config != nil {
+		protoConfig.RecvQueueSize = s.config.RecvQueueSize
+	}
 	s.Protocol = protocol.New(protoConfig)
 }