Python ConnectionRefusedError: [Errno 61] 连接被拒绝

Question

Ive seen similar questions but they I couldn't fix this error. Me and my friend are making a chat program but we keep getting the error ConnectionRefusedError: [Errno 61] Connection refused We are on different.networks by the way. Here is my code for the server

import socket

def socket_create():
try:

    global host
    global port
    global s
    host = ''
    port = 9999
    s = socket.socket()

except socket.error as msg:
    print("Socket creation error" + str(msg))

#Wait for client, Connect socket and port
def socket_bind():
try:
    global host
    global port
    global s
    print("Binding socket to port: " + str(port)) 
    s.bind((host, port))
    s.listen(5)
except socket.error as msg:
    print("Socket binding error" + str(msg) + "\n" + "Retrying...")
    socket_bind

#Accept connections (Establishes connection with client) socket has to       be listining
def socket_accept():
   conn, address = s.accept()
   print("Connection is established |" + " IP:" + str(address[0]) + "|    port:" + str(address[1]))
chat_send(conn)


def chat_send(conn):
 while True:
    chat =input()
    if len(str.encode(chat)) > 0:
        conn.send(str.encode(chat))
        client_response = str(conn.recv(1024), "utf-8")
    print(client_response)
def main():
socket_create()
socket_bind()
socket_accept()

main()

And my client code

import socket


#connects to server
s = socket.socket()
host = '127.0.0.1'
port = 9999
s.connect((host, port))

#gets chat
while True:
    data = s.recv(1024)
    print (data[:].decode("utf-8")) 
    chat = input()
    s.send(str.encode(chat))

Answer 1

This may not answer your original question, but I encountered this error and it was simply that I had not starting the server process first to listen to localhost (127.0.0.1) on the port I chose to test on. In order for the client to connect to localhost, a server must be listening on localhost.

Answer 2

'127.0.0.1' means local computer - so client connents with server on the same computer. Client have to use IP from server - like 192.168.0.1 .

Check on server:

on Windows (in cmd.exe )

ipconfig

on Linux (in console)

ifconfig

But if you are in different networks then it may not work. ipconfig/ifconfig returns local IP (like 192.168.0.1 ) which is visible only in local network. Then you may need external IP and setting (redirections) on your and provider routers. External IP can be IP of your router or provider router. You can see your external IP when you visit pages like this http://httpbin.org/ip . But it can still need some work nad it be bigger problem.

Answer 3

You need simply to start server at first, and then run the client_code. In VS Code i've opened 2 terminals. One for the server_code to be running While True , and the other one for the client_code

Answer 4

So this may not fix your question specifically but it fixed mine and it can help someone else I work with vscode and I use some extension that runs my code so when you want to run your server run it on your CMD or Terminal and run your client in vscode it helped me (maybe importat I work on mac so maybe spesific OS problem)

Answer 5

If you are connecting to a host:port that is open but there is no service bound to it you may see this IIRC. Eg with ssh you sometimes see this while attempting to connect to a server that is booting but sshd is not running.

Answer 6

此代码不适用于聊天，您必须使用解锁套接字并选择模块或其他异步模块