day30-python之socket

1.iter补充

# l=['a','b','c','d']
#
# def test():
#     return l.pop()
#
# x=iter(test,'b')
# print(x.__next__())
# print(x.__next__())
# print(x.__next__())
from functools import partial
def add(x,y):
    return x+y

func = partial(add,1)
print(func(1))
print(func(2))

# from functools import partial
# def add(x,y):
#     return x+y
# # print(add(1,2))
#
# func=partial(add,1) #偏函数
# print(func(1))
# print(func(2))

# recv_size = 0
# recv_msg = b''
# while recv_size < length:
#     recv_msg += tcp_client.recv(buffer_size)
#     recv_size = len(recv_msg)  #1024

# ''.join(iter(partial(tcp_client.recv,1024),b''))

2.ntp_client和ntp_server

# from socket import *
# import time
# ip_port=('127.0.0.1',8080)
# buffer_size=1024
#
# udp_server=socket(AF_INET,SOCK_DGRAM) #数据报
# udp_server.bind(ip_port)
from socket import *
import time
ip_port = ('127.0.0.1',8080)
buffer_size = 1024

udp_server = socket(AF_INET,SOCK_DGRAM)
udp_server.bind(ip_port)

while True:
    data,addr =udp_server.recvfrom(buffer_size)
    print(data)

    if not data:
        fmt = '%Y-%m-%d %X'
    else:
        fmt = data.decode('utf-8')
    back_time = time.strftime(fmt)

    udp_server.sendto(back_time.encode('utf-8'),addr)

# while True:
#     data,addr=udp_server.recvfrom(buffer_size)
#     print(data)
#
#     if not data:
#         fmt='%Y-%m-%d %X'
#     else:
#         fmt=data.decode('utf-8')
#     back_time=time.strftime(fmt)
#
#     udp_server.sendto(back_time.encode('utf-8'),addr)

# from socket import *
# ip_port=('127.0.0.1',8080)
# buffer_size=1024
#
# udp_client=socket(AF_INET,SOCK_DGRAM) #数据报
#
# while True:
#     msg=input('>>: ').strip()
#     udp_client.sendto(msg.encode('utf-8'),ip_port)
#
#     data,addr=udp_client.recvfrom(buffer_size)
#     print('ntp服务器的标准时间是',data.decode('utf-8'))

from socket import  *
ip_port = ('127.0.0.1',8080)
buffer_size = 1024

udp_client = socket(AF_INET,SOCK_DGRAM)
while True:
    msg = input('>>: ').strip()
    udp_client.sendto(msg.encode('utf-8'),ip_port)

    data,addr=udp_client.recvfrom(buffer_size)
    print('ntp服务器的标准时间是',data.decode('utf-8'))

3.time复习

# import time

import  time
# print(time.time())
# print(time.localtime(time.time()))

# print(time.gmtime(time.time()+28800))

# print(time.mktime(time.localtime()))

# print(time.strftime('%Y-%m-%d %X',time.localtime()))

# print(time.strftime('%F %X',time.localtime()))

print(time.ctime())
# print(time.time()) #用于计算
# print(time.localtime(time.time()))
# print(time.gmtime(time.time()+28800))
# print(time.mktime(time.localtime())) #格式化-->时间戳
# print(time.strftime('%Y-%m-%d %X',time.localtime())) #格式化--》字符串时间
# print(time.strftime('%F %X',time.localtime()))
# print(time.strptime('2017-01-03 09:37:06','%Y-%m-%d %X')) #字符串--》格式化
# print(time.ctime())

4.udp的客户端与服务端通信

from socket import *
ip_port=('127.0.0.1',8081)
buffer_size=1024

udp_client=socket(AF_INET,SOCK_DGRAM) #数据报

while True:
    msg=input('>>: ').strip()
    udp_client.sendto(msg.encode('utf-8'),ip_port)

    data,addr=udp_client.recvfrom(buffer_size)
    # print(data.decode('utf-8'))
    print(data)

# from socket import *
# ip_port=('127.0.0.1',8080)
# buffer_size=1024
#
# udp_server=socket(AF_INET,SOCK_DGRAM) #数据报
# udp_server.bind(ip_port)
#

from  socket import  *
ip_port = ('127.0.0.1',8081)
buffer_size = 1024
udp_server = socket(AF_INET,SOCK_DGRAM)
udp_server.bind(ip_port)
while True:
    data,addr = udp_server.recvfrom(buffer_size)
    print(data)

    udp_server.sendto(data.upper(),addr)
# while True:
#     data,addr=udp_server.recvfrom(buffer_size)
#     print(data)
#
#     udp_server.sendto(data.upper(),addr)

5.解决粘包

# from socket import *
# ip_port=('127.0.0.1',8080)
# back_log=5
# buffer_size=1024
#
# tcp_server=socket(AF_INET,SOCK_STREAM)
# tcp_server.bind(ip_port)
# tcp_server.listen(back_log)
#
from socket import  *
ip_port = ('127.0.0.1',8082)
back_log = 5
buffer_size = 1024
tcp_server = socket(AF_INET,SOCK_STREAM)
tcp_server.bind(ip_port)
tcp_server.listen(back_log)

conn,addr = tcp_server.accept()
data1 = conn.recv(5)
print('第一次数据',data1)
data2 = conn.recv(5)
print('第二次数据',data2)
data3 = conn.recv(5)
print('第三次数据',data3)
# conn,addr=tcp_server.accept()
#
# data1=conn.recv(5)
# print('第一次数据',data1)
#
# data2=conn.recv(5)
# print('第2次数据',data2)
#
# data3=conn.recv(5)
# print('第3次数据',data3)

# from socket import *
# import time
# ip_port=('127.0.0.1',8080)
# back_log=5
# buffer_size=1024
#
# tcp_client=socket(AF_INET,SOCK_STREAM)
# tcp_client.connect(ip_port)
#

from  socket import *
import time
ip_port = ('127.0.0.1',8082)
back_log = 5
buffer_size = 1024

tcp_client = socket(AF_INET,SOCK_STREAM)
tcp_client.connect(ip_port)
tcp_client.send('hello'.encode('utf-8'))
tcp_client.send('world'.encode('utf=8'))
tcp_client.send('egon'.encode('utf-8'))
# tcp_client.send('hello'.encode('utf-8'))
# tcp_client.send('world'.encode('utf-8'))
# tcp_client.send('egon'.encode('utf-8'))
#
#
# # time.sleep(1000)