我在使用python中的套接字的两台计算机之间的全局连接方面遇到了一些问题。我成功地从我的笔记本电脑，连接到我的电脑是在同一个网络上工作。但现在我想和我的朋友联系。（我有一个简单的聊天软件在控制台工作）
以下是服务器初始化代码：

import socket
import threading

# print(socket.gethostname())

allmsgs = []

FORMAT = "utf-8"
HEADER = 64
PORT = 5050
SERVER = socket.gethostbyname(socket.gethostname())
ADDR = (SERVER,PORT)
DISCONNECTMESSAGE = "!DISCONNECT"

connections = []
clients = []

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

server.bind((ADDR))

# there are more code in this file, but I show only init

这是一个客户端代码：

import socket
from time import sleep
import threading

SERVER = "(my public IP which popped up when i googled it)"
FORMAT = "utf-8"
HEADER = 64
PORT = 5050
DISCONNECTMESSAGE = "!DISCONNECT"
ADDR = (SERVER,PORT)

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

nickname = input("Enter your nickname: ")
global devmode
try:
    if nickname.split()[1] == "devmode":
        devmode = True
        nickname = nickname.split()[0]
except:devmode = False
while True:
    try:
        client.connect(ADDR)
        print("Succesfully connected")
        break
    except:
        print("Unable to connect.")
        print("Next try in 1 sec")
        sleep(1)

我有

ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it" error on the client's side.

我不确定我是否能成功连接。我知道有很多关于这个主题的材料，包括堆栈本身，但是没有一个我试过的对我没有帮助。