Minecraft took too long to log in error when sending packets with Python

Question

Ok, so this is my code basicly:

class Server:
    def __init__(self, addr, port, mc):
        self.mc = mc
        data = {'user': mc.user, 'password': mc.pswd, 'version': '12'}
        data = urllib.urlencode(data)
        dta = urllib.urlopen("https://login.minecraft.net", data=data).read()
        dta = dta.split(":")
        self.sessionid = dta[3]
        self.socket = socket.socket()
        self.socket.connect((addr, port))
        data = {"user": mc.user, "host": addr, "port": port}
        enc = mc.user.encode('utf-16BE')
        structfmt = '!bh'
        bytes = struct.pack(structfmt, 2, len(enc))
        bytes = bytes + enc
        self.socket.send(self.get_login_packet(mc.user, mc.pswd, addr, port))
        self.random = False
        self.world = World()
    def test(self):
        self.socket.send(self.get_chat_packet(raw_input("Enter a message: ")))
        self.disconnect(raw_input("Enter the disconnect message: "))
    def keep_alive(self):
        if self.random:
            self.socket.send(struct.pack("!bi", 0, self.random))
    def get_login_packet(self, user, password, addr, port):
        data = {"user": mc.user, "host": addr, "port": port}
        enc = mc.user.encode('utf-16BE')
        structfmt = '!bh'
        bytes = struct.pack(structfmt, 2, len(enc))
        bytes = bytes + enc
        return bytes
    def get_chat_packet(self, message):
        if len(message) > 100:
            message = message[:100]
        return struct.pack("!bs", 3, message)
    def get_disconnect_packet(self, message):
        return struct.pack("!bs", 0xFF, message)
    def disconnect(self, message):
        self.socket.send(self.get_disconnect_packet(message))
        time.sleep(0.1)
        self.socket.close()

mc is a Minecraft instance in python which basicly has 4 attributes, server (the class above), user, pswd, and world (for now, a None type).

I am NOT trying to connect to a Minecraft Classic, I am trying to connect to the payed version. I am using Python 2.5 on Windows XP. The error it gave me when I tried to connect on the server is

[INFO] Disconnecting /127.0.0.1:2292: Took too long to log in
[INFO] /127.0.0.1:2295 lost connection

The error on Python is

    self.socket.send(self.get_chat_packet(raw_input("Enter a message: ")))
socket.error: (10053, 'Software caused connection abort')

Please tell me why this is happening and preferably how to fix it also. Thanks!

You don't ever read from the socket - just a guess but try printing out self.socket.recv(100) when you connect and after you send the login packet and see what it says. — ed., Oct 15 '12 at 21:47
That won't help, the server doesn't answer if there is no complete packet. — dav1d, Oct 15 '12 at 21:50

score -1 · Answer 1 · answered Oct 15 '12 at 21:55

Your code is horrible and you will fail with a code like this to implement all Packets in a useful and relativly efficent manner. Take a look e.g. at mc3p how the protocol is implemented.

Now to your problem, you're not sending a protocol version (= 39 for minecraft 1.3) with your Handshake packet, there is also no host and no port sent with the packet.

Minecraft took too long to log in error when sending packets with Python

1 Answers1