python TCP protocol based socket programming in detail

# server-side
import socket
# 1. TCP-compliant cell phones
server = (socket.AF_INET,socket.SOCK_STREAM) # TCP
# 2. Bind a cell phone number to a server. If we use our own computer as a server, we use our own IP address.
(('127.0.0.1',8000)) # 127.0.0.1 for local
# (('192.168.11.251',8000)) 
(5) # Semi-connection pools can receive five clients at once.
# 3. waiting for client connection
print('start...')
# Link loops
while True:
# Communication loop
conn,client_addr = ()
while True:
try:
# 4. receive
data = (1024) # How many bytes received each time, if changed to 10, the client input dir, (you can enter dir in cmd, see what will get), what will happen it, the next blog will talk about sticky packets, and how to deal with sticky packets problem
print(data)
# 5.
(())
except ConnectionAbortedError:
continue
except ConnectionResetError:
break

# Client 1
import socket
# 1. Create TCP-compliant cell phones
client = (socket.AF_INET,socket.SOCK_STREAM)
# 2. dialing
(('127.0.0.1',8000))
while True:
msg = input('please enter your msg') # dir
# 3. Send a message
(('utf8'))
# 4. Receive messages
data = (1024)
print(data)

# Client 2
import socket
# 1. Create TCP-compliant cell phones
client = (socket.AF_INET,socket.SOCK_STREAM)
# 2. dialing
(('127.0.0.1',8000))
# msg = input('please enter your msg>>>')
# 3. Send a message
('hello'.encode('utf8'))
('world'.encode('utf8'))
# 4. Receiving information
data = (1024)
print(data)

# ssh server
import socket
import subprocess
server = (socket.AF_INET,socket.SOCK_STREAM)
(('192.168.11.251',8000)) # This is my machine, the client can be anyone else's machine #
(5)
print('start...')
while True:
conn,cient_addr = ()
print(client_addr) # It prints out the IP of someone else's machine #
while True:
try:
cmd = (1024) # dir
print(cmd)
# Execute cmd commands for you and then save the results to a pipeline
pipeline = (('utf8'),
shell = True,
stderr = , # std standard
stdout = )
stderr = ()
stdout = ()
(stderr)
(stdout)
except ConnectionResetError:
break

# ssh client
import socket
# 1. Create a TCP-compliant cell phone
client = (socket.AF_INET,socket.SOCK_STREAM)
# 2. dialing
(('192.168.11.210',8000))
while True:
msg = input('please enter your msg') # dir
# 3. Send a message
(('utf8'))
# 4. Receive messages
data = (10)
print(('gbk')) # existmacOn the computer it could be'utf8'