I started learning Socket in Python. Moreover, when connecting to the server (which was running on my computer), everything worked, but when my friend tried to connect to me from another PC, the client simply could not detect the server and connect to it.

I wrote client and server:

#client
import socket

host = ""
port = 1234

client  = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


client.settimeout(10)
client.connect((host, port))
client.settimeout(None)
print("connected")
client.send(("Hellow world!").encode())

#server
import socket

host = ""
port = 1234

server  = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server.bind((host, port))
server.listen(10)

print("server launched")
while True:
    conn, addr = server.accept()
    print("Connect from", addr)

    data = conn.recv(1024)
    data = data.decode()
    print(data)

A friend tried to start the client, but for some reason, the client can’t connect to the server.