From d2eb6a8db193ff71376554981af35481987402ba Mon Sep 17 00:00:00 2001
From: vivid <vivid@vivid-VirtualBox.com>
Date: Sun, 17 Jun 2018 18:23:56 -0700
Subject: [PATCH] add script and js for testing, update difficulty in
 consensus.go

---
 consensus/ethash/consensus.go |  4 ++-
 genesis.json                  | 12 +++++++++
 node0.js                      | 47 +++++++++++++++++++++++++++++++++++
 node0.sh                      |  7 ++++++
 node1.js                      | 19 ++++++++++++++
 node1.sh                      |  7 ++++++
 6 files changed, 95 insertions(+), 1 deletion(-)
 create mode 100644 genesis.json
 create mode 100644 node0.js
 create mode 100644 node0.sh
 create mode 100644 node1.js
 create mode 100644 node1.sh

diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go
index 99eec82211..dab04e88af 100644
--- a/consensus/ethash/consensus.go
+++ b/consensus/ethash/consensus.go
@@ -287,8 +287,10 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainReader, header, parent *
 // CalcDifficulty is the difficulty adjustment algorithm. It returns
 // the difficulty that a new block should have when created at time
 // given the parent block's time and difficulty.
+// TODO Wei: update the difficulty calculation function to reduce the rate of blck difficulty increment
 func (ethash *Ethash) CalcDifficulty(chain consensus.ChainReader, time uint64, parent *types.Header) *big.Int {
-	return CalcDifficulty(chain.Config(), time, parent)
+	//return CalcDifficulty(chain.Config(), time, parent)
+	return big.NewInt(0x200)
 }
 
 // CalcDifficulty is the difficulty adjustment algorithm. It returns
diff --git a/genesis.json b/genesis.json
new file mode 100644
index 0000000000..5423d4bf91
--- /dev/null
+++ b/genesis.json
@@ -0,0 +1,12 @@
+
+{   "config": {  
+        "chainId": 987, 
+        "homesteadBlock": 0,
+        "eip155Block": 0,
+        "eip158Block": 0
+    },
+    "difficulty": "0x200",
+    "gasLimit": "0x8000000", 
+    "alloc": {}
+}
+}
diff --git a/node0.js b/node0.js
new file mode 100644
index 0000000000..b256e08f39
--- /dev/null
+++ b/node0.js
@@ -0,0 +1,47 @@
+function sleep(milliseconds) {
+  var start = new Date().getTime();
+  for (var i = 0; i < 1e7; i++) {
+    if ((new Date().getTime() - start) > milliseconds){
+      break;
+    }
+  }
+}
+
+function interaction() {
+   personal.newAccount("123456")
+   personal.newAccount("123456")
+   acc0 = web3.eth.accounts[0]
+   acc1 = web3.eth.accounts[1]
+   console.log("account list: " + eth.accounts)
+   console.log("acc0 balance: " + web3.fromWei(web3.eth.getBalance(acc0)))
+   console.log("acc1 balance: " + web3.fromWei(web3.eth.getBalance(acc1)))
+
+   miner.setEtherbase(eth.accounts[0])
+   miner.start()
+
+   while (1) {
+     balance = web3.fromWei(web3.eth.getBalance(acc0)) 
+     if (balance > 0) {
+        miner.stop()
+        personal.unlockAccount(acc0, "123456")
+        eth.sendTransaction({from:acc0,to:acc1,value:web3.toWei(1,"ether")})
+        miner.start()
+       // sleep(10000)
+         //  if (balance1 = balance - 1) {
+	       while (1) {
+	  	  balance1 = web3.fromWei(web3.eth.getBalance(acc1))
+		  if (balance1 > 0) {
+		     miner.stop()
+                      break
+		  }
+               }  
+               console.log("acc0 balance: " + web3.fromWei(web3.eth.getBalance(acc0)))
+               console.log("acc1 balance: " + web3.fromWei(web3.eth.getBalance(acc1)))
+	 //  }
+        break 
+     }
+  }
+  console.log(admin.nodeInfo.id)
+}
+
+interaction()
diff --git a/node0.sh b/node0.sh
new file mode 100644
index 0000000000..0bcfe99db0
--- /dev/null
+++ b/node0.sh
@@ -0,0 +1,7 @@
+rm -rf /home/vivid/.ethereum/*
+echo "main node datadir cleared"
+./geth --datadir /home/vivid/.ethereum init genesis.json
+
+sleep 1s
+./geth --datadir /home/vivid/.ethereum --port 30303 --networkid 9876 console
+
diff --git a/node1.js b/node1.js
new file mode 100644
index 0000000000..34cf440edc
--- /dev/null
+++ b/node1.js
@@ -0,0 +1,19 @@
+function sleep(milliseconds) {
+  var start = new Date().getTime();
+  for (var i = 0; i < 1e7; i++) {
+    if ((new Date().getTime() - start) > milliseconds){
+      break;
+    }
+  }
+}
+
+function interaction() {
+        console.log("peer count: " + net.peerCount)
+	admin.addPeer("enode://a321db2296eb0078fab331d27460456f9c66c478049ee34441595d9c4fc4391af31f24b81fcdf21f28a7e391d07ab4fc550b6e235021abad310992f32d2fc876@127.0.0.1:30303")
+	sleep(5000)	
+        console.log("peer count: " + net.peerCount)
+
+
+}
+
+interaction()
diff --git a/node1.sh b/node1.sh
new file mode 100644
index 0000000000..049d48d747
--- /dev/null
+++ b/node1.sh
@@ -0,0 +1,7 @@
+rm -rf /home/vivid/peernode/*
+echo "peer node datadir cleared"
+./geth --datadir /home/vivid/peernode init genesis.json
+
+sleep 1s
+./geth --datadir /home/vivid/peernode --port 30304 --networkid 9876 console
+