const google.golang.org/grpc.payloadLen

3 uses

	google.golang.org/grpc (current package)
		rpc_util.go#L872: 	payloadLen = 1
		rpc_util.go#L874: 	headerLen  = payloadLen + sizeLen
		rpc_util.go#L893: 	binary.BigEndian.PutUint32(hdr[payloadLen:], length)