def new_block():
global transaction_pool
data = request.json
block = Block.from_dict(data)
if blockchain.add_block(block):
# Delete transactions from pool
transaction_pool = list(filter(lambda x: x not in block.transactions, transaction_pool))
return "New block added"
return "Nope"
async def ws_handler(self, request):
ws = web.WebSocketResponse()
await ws.prepare(request)
async for msg in ws:
if msg.type == aiohttp.WSMsgType.TEXT:
msg = json.loads(msg.data)
if msg["type"] == MessageType.REGISTER_ME:
# 새로운 노드 연결
node = msg["nodeinfo"]
await self.connect_to_peers([node])
self.nodes.append(node)
elif msg["type"] == MessageType.REQUEST_NODE_LIST:
# 노드 목록 알려줌
await ws.send_json(self.nodes)
elif msg["type"] == MessageType.REQUEST_MAKE_BLOCK:
# 블록 생성함
await asyncio.sleep(random.randint(3,
10)) # 해시 푸는 속도라고 가정하자
tr_info = msg["data"]
_lastblock = self.chain.get_latest_block()
new_block = Block(_lastblock.index + 1, tr_info["data"],
tr_info["timestamp"], _lastblock.hash,
'')
new_block.calculate()
if new_block.index > self.chain.latest_block.index:
self.chain.add_block(new_block)
# 컨펌 받기
await self.broadcast(
json.dumps({
"type": MessageType.REQUEST_CONFIRM_BLOCK,
"chain": self.chain.json()
}))
await ws.send_str("[+] Well done !")
elif msg["type"] == MessageType.REQUEST_CONFIRM_BLOCK:
# 블록 생성 컨펌해줌
blocks = [
Block.from_dict(j) for j in json.loads(msg["chain"])
]
if len(blocks) > self.chain.length:
if BlockChain.is_valid_chain(blocks):
self.chain.blocks = blocks
else:
pass
elif msg.type == aiohttp.WSMsgType.Error:
print('ws connection closed with exception ', ws.exception())
return ws
def get_blocks():
blocks = requests.get(b_url + '/').json()
blocks = [Block.from_dict(x) for x in blocks['blocks']]
return blocks
