python全栈开发 * 33 知识点汇总 * 180718

33 udp协议编码  显示客户端名字,输出带颜色的内容 udp协议的时间同步机制  
#一.udp  协议编码  一个服务器,多个客户端
#服务器:
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# sk.bind(("127.0.0.1",8801))
# while True:
#     msg,addr=sk.recvfrom(1024)
#     print(msg.decode("utf-8"),addr)
#     msg1=msg.decode("utf-8")
#     if msg1=="q":
#         continue
#     con=input("<<<").encode("utf-8")
#     sk.sendto(con,addr)
#     if con =="q":
#         break
# sk.close()
#客户端
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# while True:
#     con1=input("<<<").encode("utf-8")
#     sk.sendto(con1,("127.0.0.1",8801))
#     if con1=="q":
#         break
#     msg_c,addr=sk.recvfrom(1024)
#     print(msg_c.decode("utf-8"))
#     msg2=msg_c.decode("utf-8")
#     if msg2=="q":
#         break
# sk.close()

# 二.优化代码显示客户端名字
#服务器
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# sk.bind(("127.0.0.1",8801))
# while True:
#     msg,addr=sk.recvfrom(1024)
#     print(msg.decode("utf-8"),addr)
#     msg1=msg.decode("utf-8")
#     if msg1=="q":
#         continue
#     con=input("<<<").encode("utf-8")
#     sk.sendto(con,addr)
#     if con =="q":
#         break
# sk.close()
#客户端
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# name=input("请输入名字:")
# while True:
#     con1=input("<<<")
#     con1=name+":"+con1
#     sk.sendto(con1.encode("utf-8"),("127.0.0.1",8801))
#     if con1=="q":
#         break
#     msg_c,addr=sk.recvfrom(1024)
#     print(msg_c.decode("utf-8"))
#     msg2=msg_c.decode("utf-8")
#     if msg2=="q":
#         break
# sk.close()

#三.输出带颜色的字(一个客户端)
#服务器:
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# sk.bind(("127.0.0.1",8801))
# while True:
#     msg,addr=sk.recvfrom(1024)
#     msg_c=msg.decode("utf-8")
#     print("\033[0;35;41m%s,%s\033[0m"%(msg_c,addr))
#
#     if msg_c=="q":
#         continue
#     con=input("<<<").encode("utf-8")
#     sk.sendto(con,addr)
#     if con =="q":
#         break
# sk.close()

#四.输出带颜色的文字( 一个服务器 多个客户端)
#服务器
# import socket
# sk=socket.socket(type=socket.SOCK_DGRAM)
# sk.bind(("127.0.0.1",8801))
# dic={"alex":"\033[0;35;41m","太白":"\033[0;32;40m"}
# while True:
#     msg,addr=sk.recvfrom(1024)
#     msg_c=msg.decode("utf-8")
#     name=msg_c.split(":")[0].strip()
#     print(name)
#     color=dic.get(name,"")
#     print("%s%s\033[0m" % (color,msg_c))
#
#     if msg_c=="q":
#         continue
#     con=input("<<<").encode("utf-8")
#     sk.sendto(con,addr)
#     if con =="q":
#         break
# sk.close()

#五.基于udp协议的时间同步机制
#服务器
# import socket
# import time
# sk=socket.socket(type=socket.SOCK_DGRAM)
# sk.bind(("127.0.0.1",8801))
# while 1:
#     tm_format,addr=sk.recvfrom(1024)
#     tm_format=tm_format.decode("utf-8")
#     local_time=time.strftime(tm_format)
#     sk.sendto(local_time.encode("utf_8"),addr)
# sk.close()
#客户端
# import socket
# import time
# sk=socket.socket(type=socket.SOCK_DGRAM)
# tm_format=input(">>>")
# while 1:
#     sk.sendto(tm_format.encode("utf-8"),("127.0.0.1",8801))
#     local_time,addr=sk.recvfrom(1024)
#     print(local_time.decode("utf-8"))
#     time.sleep(5)    #五秒出一个
# sk.close()