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1 files changed, 61 insertions, 0 deletions

diff --git a/params/network_params.go b/params/network_params.go
new file mode 100644
index 0000000..bba2472
--- /dev/null
+++ b/params/network_params.go
@@ -0,0 +1,61 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package params
+
+// These are network parameters that need to be constant between clients, but
+// aren't necessarily consensus related.
+
+const (
+	// BloomBitsBlocks is the number of blocks a single bloom bit section vector
+	// contains on the server side.
+	BloomBitsBlocks uint64 = 4096
+
+	// BloomBitsBlocksClient is the number of blocks a single bloom bit section vector
+	// contains on the light client side
+	BloomBitsBlocksClient uint64 = 32768
+
+	// BloomConfirms is the number of confirmation blocks before a bloom section is
+	// considered probably final and its rotated bits are calculated.
+	BloomConfirms = 256
+
+	// CHTFrequency is the block frequency for creating CHTs
+	CHTFrequency = 32768
+
+	// BloomTrieFrequency is the block frequency for creating BloomTrie on both
+	// server/client sides.
+	BloomTrieFrequency = 32768
+
+	// HelperTrieConfirmations is the number of confirmations before a client is expected
+	// to have the given HelperTrie available.
+	HelperTrieConfirmations = 2048
+
+	// HelperTrieProcessConfirmations is the number of confirmations before a HelperTrie
+	// is generated
+	HelperTrieProcessConfirmations = 256
+
+	// CheckpointFrequency is the block frequency for creating checkpoint
+	CheckpointFrequency = 32768
+
+	// CheckpointProcessConfirmations is the number before a checkpoint is generated
+	CheckpointProcessConfirmations = 256
+
+	// ImmutabilityThreshold is the number of blocks after which a chain segment is
+	// considered immutable (i.e. soft finality). It is used by the downloader as a
+	// hard limit against deep ancestors, by the blockchain against deep reorgs, by
+	// the freezer as the cutoff treshold and by clique as the snapshot trust limit.
+	ImmutabilityThreshold = 90000
+)