A. Socket programming
- socket called Socket
- socket programming is actually performed using the code to implement the two-side network communications; socket communications program is implemented two
- Two ends communicate into the server and the client two kinds of
- python through the socket module providing classes and methods associated socket programming
II. Server-side
(Note: the following server and client implemented in two files py)
1. Create a socket object (buy phone)
socket(family=AF_INET, type=SOCK_STREAM)
family - 设置ip类型; AF_INET对应的是ipv4; AF_INET6对应的是ipv6
type - 设置传输类型; SOCK_STREAM对应的是TCP协议; SOCK_DGRAM对应的是UDP协议2. Binding IP and port (plug telephone line)
bind((ip地址, 端口))
ip地址: 找到互联网中唯一的一台计算机; 赋值ip地址对应的字符串
端口: 区分同一台计算机中不同的服务(程序); 赋整数,值的范围是0~65535, 其中0~1024属于著名，不能随便用。
同一时间同一个端口只能对应一个服务3. Start listening (and other phones)
server.listen(N)
N : 表示能同时接通的"电话"的数量4. accept client requests (phone)
connection, address = server.accept()
connection : 服务器接收的客户端的分机对象
address : 该客户端的IP地址
返回为这个客户端创建的独立的套接字对象(分机)和客户端的地址
当程序运行到这句代码的时候会停下来，直到有请求为止5. receive messages (listen to each other talk)
分机对象 . recv(一次性能够接收的数据的大小)
返回接收到的数据, 数据类型是二进制6. Send the message (listen to others speak)
分机对象.send(需要发送的数据)7. close the connection (hang up)
分机对象.close()A complete server-side
from socket import socket
server = socket()
server.bind(('192.168.10.234', 5200)) # ip地址可以用自己电脑的IP, 端口随便,只要不是0-1024
server.listen(50) # 表示这个服务器可以同时和50个客户端进行通信
while True: # 保证通话一直进行
print('正在监听...')
connection, address = server.accept() # 接受客户端请求,并创建分机对象connection, 返回分机地址address
recv_data = connection.recv(1024).decode(encoding='utf-8') # 接收客户端发来的数据,并将二进制转换成字符串(.decode方法)
print('recv_data') # 打印接收到的数据
massage = input('请输入发送内容:') # 输入要发送的内容
connection.send(massage) # 发送数据
connection.close() # 关闭对话III. The client
1. Create a socket object (buy phone)
client = socket()
2. Connect server
client.connect(('192.168.10.234', 5200))
3. Send Message
client.send()
4. Receiving message
client.recv()
5. Disconnect
client.close()
A complete client
client = socket()
client.connect(('192.168.10.234', 5200))
client.send('服务器你好吗？'.encode())
re_data = client.recv(1024)
print(re_data.decode(encoding='utf-8'))
client.close()IV. Other Sao operations
1. The one constant communication
"""服务器端"""
from socket import socket
server = socket()
server.bind(('10.7.156.55', 9999))
server.listen(20)
while True:
print('正在监听...')
connection, address = server.accept()
# 持续通信
while True:
re_data = connection.recv(1024)
re_massage = re_data.decode(encoding='utf-8')
print('client:', re_massage)
if re_massage == '再见':
connection.close()
break
massage = input('server:')
connection.send(massage.encode())
if massage == '再见':
connection.close()
break
"""客户端"""
from socket import socket
client = socket()
client.connect(('10.7.156.55', 9999))
while True:
massage = input('client:')
# for _ in range(10):
client.send(massage.encode())
if massage == '拜拜':
client.close()
break
re_massage = client.recv(1024).decode(encoding='utf-8')
print('server:', re_massage)
if re_massage == '拜拜':
client.close()
break2. Send pictures
"""服务器端"""
from socket import socket
server = socket()
server.bind(('10.7.156.55', 8000))
server.listen(1024)
while True:
connection, address = server.accept()
with open('../code/1024x1024.jpg', 'rb') as f:
data = f.read()
connection.send(data)
"""客户端"""
from socket import socket
client = socket()
client.connect(('10.7.156.55', 8000))
# 接收图片长度
total_length = int(client.recv(1024).decode())
print('第一次:', total_length)
sum_data = bytes() # 保存接收到的图片的总数据
# 接收图片
while True:
re_data = client.recv(1024)
sum_data += re_data
if len(sum_data) == total_length:
with open('client/test1.wav', 'wb') as f:
f.write(sum_data)
breakEnd Sahua