python_error - Python,socket.error: [Errno 10061] 由于目标计算机积极拒绝，无法连接。

Question

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# Echo client program
import socket

HOST = '127.0.0.1'    # The remote host
PORT = 50007              # The same port as used by the server
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
s.sendall(b'Hello, world')
data = s.recv(1024)
s.close()
print('Received', repr(data))


# Echo server program
import socket

HOST = '127.0.0.1'                 # Symbolic name meaning all available interfaces
PORT = 50007              # Arbitrary non-privileged port
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
conn, addr = s.accept()
print('Connected by', addr)
while True:
    data = conn.recv(1024)
    if not data:
                break
    conn.sendall(data)
conn.close()

ps:code from here

Answer 1

1) Start the server first to see if it can start normally
2) Because it is based on TCP, you can try to see if telnet can connect to the server. The format is telnet 127.0.0.1 5007. If telnet is not found, configure and start telnet
3) If telnet fails, check whether python is allowed to access the network and configure it in the control panel.

Answer 2

The service is not started or the connection information is incorrect

Answer 3

I also encountered this problem, please help~