dawei
在Linux系统中
01 阻塞服务端
特征：1对1，阻塞。
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server = socket.socket()
server.bind((,8000))
server.listen(5)
conn,addr = server.accept()
( data = conn.recv(1024 data == b data == b (
(
02 非阻塞服务端
特征：1对多，轮询，非阻塞，占用资源多。
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server = socket.socket()
server.setblocking(False)
server.bind((,8001))
server.listen(5)
all_connection = []
conn,addr = server.accept()
conn.setblocking(False)
(
handle = all_connection.copy()
connection recv_data = connection.recv(1024 :
( all_connection.remove(connection)
03 epoll服务端
特征：1对多，通知机制，非阻塞，占用资源少；epoll：注册惰性事件回调。
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selectors
epoll = selectors.EpollSelector()
server = socket.socket()
server.bind((,8082 server.listen(100
conn,addres = server.accept()
data = conn.recv(1024 epoll.unregister(conn)
events = epoll.select()
key,mask sock = key.fileobj
callback = key.data
callback(sock)
04客户端
测试服务端。
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client = client.connect((,8082
data = input( recv_data = client.recv(1024 (recv_data.decode())
