mirror of
https://github.com/kuitoi/kuitoi-Server.git
synced 2025-08-17 08:15:42 +00:00
453 lines
16 KiB
Python
453 lines
16 KiB
Python
# Developed by KuiToi Dev
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# File core.tcp_server.py
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# Written by: SantaSpeen
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# Core version: 0.2.3
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# Licence: FPA
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# (c) kuitoi.su 2023
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import asyncio
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import json
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import math
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import zlib
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from core import utils
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class Client:
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def __init__(self, reader, writer, core):
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self.__reader = reader
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self.__writer = writer
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self._down_rw = (None, None)
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self.__Core = core
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self.__alive = True
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self._loop = asyncio.get_event_loop()
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self._log = utils.get_logger("client(None:0)")
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self._addr = writer.get_extra_info("sockname")
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self._cid = -1
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self._key = None
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self.nick = None
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self.roles = None
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self._guest = True
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self._ready = False
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self._cars = []
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@property
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def _writer(self):
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return self.__writer
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@property
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def log(self):
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return self._log
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@property
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def addr(self):
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return self._addr
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@property
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def cid(self):
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return self._cid
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@property
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def key(self):
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return self._key
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@property
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def guest(self):
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return self._guest
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@property
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def ready(self):
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return self._ready
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@property
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def cars(self):
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return self._cars
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def _update_logger(self):
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self._log = utils.get_logger(f"{self.nick}:{self.cid}")
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self.log.debug(f"Update logger")
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def is_disconnected(self):
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if not self.__alive:
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return True
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res = self.__writer.is_closing()
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if res:
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self.log.debug(f"Disconnected.")
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self.__alive = False
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return True
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else:
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self.log.debug(f"Alive.")
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self.__alive = True
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return False
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async def kick(self, reason):
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if not self.__alive:
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self.log.debug(f"{self.nick}.kick('{reason}') skipped: Not alive;")
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return
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# TODO: i18n
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self.log.info(f"Kicked with reason: \"{reason}\"")
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await self._send(b"K" + bytes(reason, "utf-8"))
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self.__alive = False
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async def _send(self, data, to_all=False, to_self=True, to_udp=False, writer=None):
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# TNetwork.cpp; Line: 383
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# BeamMP TCP protocol sends a header of 4 bytes, followed by the data.
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# [][][][][][]...[]
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# ^------^^---...-^
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# size data
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if type(data) == str:
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data = bytes(data, "utf-8")
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if writer is None:
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writer = self.__writer
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if to_all:
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code = chr(data[0])
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for client in self.__Core.clients:
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if not client or (client is self and not to_self):
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continue
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if not to_udp or code in ['V', 'W', 'Y', 'E']:
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if code in ['O', 'T'] or len(data) > 1000:
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if len(data) > 400:
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# TODO: Compress data
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await client._send(data)
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else:
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await client._send(data)
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else:
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await client._send(data)
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else:
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# TODO: UDP send
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self.log.debug(f"UDP Part not ready: {code}")
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return
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header = len(data).to_bytes(4, "little", signed=True)
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self.log.debug(f'len: {len(data)}; send: {header + data!r}')
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try:
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writer.write(header + data)
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await writer.drain()
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except ConnectionError:
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self.log.debug('tcp_send: Disconnected')
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self.__alive = False
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async def _recv(self):
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try:
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header = await self.__reader.read(4)
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int_header = 0
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for i in range(len(header)):
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int_header += header[i]
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if int_header <= 0:
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await asyncio.sleep(0.1)
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self.is_disconnected()
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if self.__alive:
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self.log.debug(f"Header: {header}")
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await self.kick("Invalid packet - header negative")
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return b""
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if int_header > 100 * MB:
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await self.kick("Header size limit exceeded")
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self.log.warning(f"Client {self.nick}:{self.cid} sent header of >100MB - "
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f"assuming malicious intent and disconnecting the client.")
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return b""
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data = await self.__reader.read(100 * MB)
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self.log.debug(f"header: `{header}`; int_header: `{int_header}`; data: `{data}`;")
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if len(data) != int_header:
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self.log.debug(f"WARN Expected to read {int_header} bytes, instead got {len(data)}")
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abg = b"ABG:"
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if len(data) > len(abg) and data.startswith(abg):
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data = zlib.decompress(data[len(abg):])
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self.log.debug(f"ABG Packet: {len(data)}")
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return data
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return data
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except ConnectionError:
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self.__alive = False
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return b""
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async def _split_load(self, start, end, d_sock, filename):
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# TODO: Speed limiter
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real_size = end - start
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writer = self._down_rw[1] if d_sock else self.__writer
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who = 'dwn' if d_sock else 'srv'
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if config.Server["debug"]:
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self.log.debug(f"[{who}] Real size: {real_size / MB}mb; {real_size == end}, {real_size * 2 == end}")
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with open(filename, 'rb') as f:
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f.seek(start)
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data = f.read(end)
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try:
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writer.write(data)
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await writer.drain()
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self.log.debug(f"[{who}] File sent.")
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except ConnectionError:
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self.__alive = False
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self.log.debug(f"[{who}] Disconnected.")
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return real_size
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async def _sync_resources(self):
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while self.__alive:
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data = await self._recv()
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self.log.debug(f"data: {data!r}")
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if data.startswith(b"f"):
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file = data[1:].decode("utf-8")
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# TODO: i18n
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self.log.info(f"Requested mode: {file!r}")
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size = -1
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for mod in self.__Core.mods_list:
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if type(mod) == int:
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continue
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if mod.get('path') == file:
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size = mod['size']
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self.log.debug("File is accept.")
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break
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self.log.debug(f"Mode size: {size}")
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if size == -1:
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await self._send(b"CO")
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await self.kick(f"Not allowed mod: " + file)
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return
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await self._send(b"AG")
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t = 0
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while not self._down_rw[0]:
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await asyncio.sleep(0.1)
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t += 1
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if t > 50:
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await self.kick("Missing download socket")
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return
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half_size = math.floor(size / 2)
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uploads = [
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self._split_load(0, half_size, False, file),
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self._split_load(half_size, size, True, file)
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]
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sl0, sl1 = await asyncio.gather(*uploads)
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sent = sl0 + sl1
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ok = sent == size
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lost = size - sent
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self.log.debug(f"SplitLoad_0: {sl0}; SplitLoad_1: {sl1}; At all ({ok}): Sent: {sent}; Lost: {lost}")
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if not ok:
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self.__alive = False
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# TODO: i18n
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self.log.error(f"Error while sending.")
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return
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elif data.startswith(b"SR"):
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path_list = ''
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size_list = ''
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for mod in self.__Core.mods_list:
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if type(mod) == int:
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continue
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path_list += f"{mod['path']};"
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size_list += f"{mod['size']};"
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mod_list = path_list + size_list
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self.log.debug(f"Mods List: {mod_list}")
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if len(mod_list) == 0:
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await self._send(b"-")
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else:
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await self._send(bytes(mod_list, "utf-8"))
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elif data == b"Done":
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await self._send(b"M/levels/" + bytes(config.Game['map'], 'utf-8') + b"/info.json")
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for c in range(config.Game['max_cars']):
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self._cars.append(None)
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break
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return
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def _get_cid_vid(self, data: str):
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s = data[data.find(":", 1)+1:]
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id_sep = s.find('-')
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if id_sep == -1:
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self.log.debug(f"Invalid packet: Could not parse pid/vid from packet, as there is no '-' separator: '{s}'")
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return -1, -1
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cid = s[:id_sep]
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vid = s[id_sep + 1:]
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if cid.isdigit() and vid.isdigit():
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try:
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cid = int(cid)
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vid = int(vid)
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return cid, vid
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except ValueError:
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self.log.debug(f"Invalid packet: Could not parse cid/vid from packet, as one or both are not valid "
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f"numbers: '{s}'")
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return -1, -1
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self.log.debug(f"Invalid packet: Could not parse pid/vid from packet: '{s}'")
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return -1, -1
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async def _handle_vehicle_codes(self, data):
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if len(data) < 6:
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return
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sub_code = data[1]
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data = data[3:]
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match sub_code:
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case "s": # Spawn car
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self.log.debug("Trying to spawn car")
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if data[0] == "0":
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car_id = 0
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for c in self.cars:
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if c is None:
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break
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car_id += 1
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self.log.debug(f"Created a car with ID {car_id}")
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car_data = data[2:]
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car_json = {}
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try:
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car_json = json.loads(data[5:])
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except Exception as e:
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self.log.debug(f"Invalid car_json: Error: {e}; Data: {car_data}")
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# TODO: Call event onCarSpawn
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allow_spawn = True
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over_spawn = False
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pkt = f"Os:{self.roles}:{self.nick}:{self.cid}-{car_id}:{car_data}"
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unicycle = car_json.get("jbm") == "unicycle"
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if (allow_spawn and (config.Game['max_cars'] > car_id or unicycle)) or over_spawn:
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self.log.debug(f"Car spawn accepted.")
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self._cars[car_id] = {
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"packet": pkt,
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"json": car_json,
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"json_ok": bool(car_json),
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"unicycle": unicycle,
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"over_spawn": over_spawn or unicycle
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}
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await self._send(pkt, to_all=True)
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else:
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await self._send(pkt)
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des = f"Od:{self.cid}-{car_id}"
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await self._send(des)
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case "d": # Delete car
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self.log.debug("Trying to delete car")
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cid, car_id = self._get_cid_vid(data)
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if car_id != -1 and cid == self.cid:
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# TODO: Call event onCarDelete
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await self._send(data, to_all=True, to_self=True)
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try:
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self._cars[car_id] = None
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await self._send(f"Od:{self.cid}-{car_id}")
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self.log.debug(f"Deleted car with car_id: {car_id}")
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except IndexError:
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self.log.debug(f"Unknown car: car_id={car_id}")
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case "c": # Edit car
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self.log.debug("Trying to edit car")
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# TODO: edit car
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cid, car_id = self._get_cid_vid(data)
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if car_id != -1 and cid == self.cid:
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car = self.cars[car_id]
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if car['unicycle']:
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pass
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case "r": # Reset car
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self.log.debug("Trying to reset car")
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# TODO: reset car
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cid, car_id = self._get_cid_vid(data)
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if car_id != -1 and cid == self.cid:
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pass
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case "t" | "m":
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pass
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async def _handle_codes(self, data):
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if not data:
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self.__alive = False
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return
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# Codes: V W X Y
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if 89 >= data[0] >= 86:
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await self._send(data, to_all=True, to_self=False)
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data = data.decode()
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code = data[0]
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match code:
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case "H":
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# Client connected
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ev.call_event("onPlayerJoin", player=self)
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await ev.call_async_event("onPlayerJoin", player=self)
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await self._send(f"Sn{self.nick}", to_all=True) # I don't know for what it
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await self._send(f"JWelcome {self.nick}!", to_all=True) # Hello message
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self._ready = True
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for client in self.__Core.clients:
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if not client:
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continue
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for car in client.cars:
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await self._send(car['packet'])
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case "C": # Chat handler
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msg = data[4 + len(self.nick):]
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if not msg:
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self.log.debug("Tried to send an empty event, ignoring")
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return
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self.log.info(f"{self.nick}: {msg}")
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to_ev = {"message": msg, "player": self}
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ev_data_list = ev.call_event("onChatReceive", **to_ev)
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d2 = await ev.call_async_event("onChatReceive", **to_ev)
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ev_data_list.extend(d2)
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need_send = True
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for ev_data in ev_data_list:
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try:
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message = ev_data["message"]
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to_all = ev_data.get("to_all")
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if to_all is None:
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if need_send:
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need_send = False
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to_all = True
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if to_all:
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if need_send:
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need_send = False
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to_self = ev_data.get("to_self")
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if to_self is None:
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to_self = True
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to_client = ev_data.get("to_client")
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writer = None
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if to_client:
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writer = to_client._writer
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await self._send(f"C:{message}", to_all=to_all, to_self=to_self, writer=writer)
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except KeyError | AttributeError:
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self.log.error(f"Returns invalid data: {ev_data}")
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if need_send:
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await self._send(data, to_all=True)
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case "O": # Cars handler
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await self._handle_vehicle_codes(data)
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case "E": # Client events handler
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# TODO: HandleEvent
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pass
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case "N":
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await self._send(data, to_all=True, to_self=False)
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async def _looper(self):
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await self._send(f"P{self.cid}") # Send clientID
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await self._sync_resources()
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while self.__alive:
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data = await self._recv()
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self._loop.create_task(self._handle_codes(data))
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async def _remove_me(self):
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await asyncio.sleep(0.3)
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self.__alive = False
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if (self.cid > 0 or self.nick is not None) and \
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self.__Core.clients_by_nick.get(self.nick):
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# if self.ready:
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# await self.tcp_send(b"", to_all=True) # I'm disconnected.
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self.log.debug(f"Removing client {self.nick}:{self.cid}")
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# TODO: i18n
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self.log.info("Disconnected")
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self.__Core.clients[self.cid] = None
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self.__Core.clients_by_id.pop(self.cid)
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self.__Core.clients_by_nick.pop(self.nick)
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else:
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self.log.debug(f"Removing client; Closing connection...")
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try:
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if not self.__writer.is_closing():
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self.__writer.close()
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except Exception as e:
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self.log.debug(f"Error while closing writer: {e}")
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try:
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_, down_w = self._down_rw
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if down_w and not down_w.is_closing():
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down_w.close()
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except Exception as e:
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self.log.debug(f"Error while closing download writer: {e}")
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