2.5 实现注册节点

实现注册节点这个功能比较简单，就是在我们的BlockChain类中 维护一个成员变量nodes，其类型是Set。然后通过Http接口接受穿过来的地址，将其保存到nodes里

class Blockchain:

def __init__(self):
self.chain = []
self.current_transactions = []
self.nodes = set()

# 创始区块 工作量证明随意，上一个区块hash值随意
self.new_block(proof=100, previous_hash=1)
def register_node(self, address):
parsed_url = urlparse(address)
self.nodes.add(parsed_url.netloc)
...
...

路由函数

@web.route('/node/register', methods=['POST'])
def register_node():
values = request.get_json()
nodes = values.get("nodes")

if nodes is None:
return "Error: please supply a valid list of nodes", 400

for node in nodes:
block_chain.register_node(node)

response = {
'message': 'New Nodes have been added',
'total_nodes': list(block_chain.nodes)
}

return jsonify(response), 201