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feat: migrate paqctl to self-hosted Gitea (git.samnet.dev)

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All repository URLs updated from GitHub (SamNet-dev/paqctl) to
Gitea (git.samnet.dev/SamNet-dev/paqctl). Third-party references
(hanselime/paqet, Xray, microsocks) remain on GitHub.
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SamNet-dev
2026-02-23 23:46:21 -06:00
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__pycache__/
*.pyc
*.pyo
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C) 2026 SamNet Technologies, LLC
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
Preamble
The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate. Many developers of free software are heartened and encouraged by the resulting cooperation. However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals. This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
The precise terms and conditions for copying, distribution and modification follow.
TERMS AND CONDITIONS
0. Definitions.
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If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may
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Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
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If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
paqctl - Paqet Management Tool
Copyright (C) 2026 SamNet Technologies, LLC
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source. For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code. There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements.
You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.

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import subprocess
import os
import time
import sys
import signal
import platform
IS_WINDOWS = platform.system() == 'Windows'
scripts = ['quic_client.py', 'vio_client.py']
def kill_existing_script(script_name):
"""Kill any existing instance of the script (cross-platform)"""
if IS_WINDOWS:
# On Windows, use taskkill to find and kill python processes
try:
result = subprocess.run(
['wmic', 'process', 'where',
f"commandline like '%{script_name}%' and name like '%python%'",
'get', 'processid'],
capture_output=True, text=True, stderr=subprocess.DEVNULL
)
for line in result.stdout.split('\n'):
line = line.strip()
if line.isdigit():
subprocess.run(['taskkill', '/F', '/PID', line],
stderr=subprocess.DEVNULL, stdout=subprocess.DEVNULL)
except Exception:
pass
else:
subprocess.run(['pkill', '-f', script_name], stderr=subprocess.DEVNULL)
def run_script(script_name):
"""Start a script, killing any existing instance first"""
kill_existing_script(script_name)
time.sleep(0.5)
if IS_WINDOWS:
p = subprocess.Popen([sys.executable, script_name],
creationflags=subprocess.CREATE_NEW_PROCESS_GROUP)
else:
p = subprocess.Popen([sys.executable, script_name])
return p
processes = []
def signal_handler(sig, frame):
print('\nShutting down GFK client...')
for p in processes:
try:
p.terminate()
p.wait(timeout=3)
except Exception:
try:
p.kill()
except Exception:
pass
sys.exit(0)
if __name__ == "__main__":
signal.signal(signal.SIGINT, signal_handler)
if not IS_WINDOWS:
signal.signal(signal.SIGTERM, signal_handler)
print("Starting GFK client...")
p1 = run_script(scripts[0])
time.sleep(1)
p2 = run_script(scripts[1])
processes.extend([p1, p2])
print("GFK running. Press Ctrl+C to stop.\n")
try:
p1.wait()
p2.wait()
print("All subprocesses have completed.")
except KeyboardInterrupt:
signal_handler(None, None)

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import asyncio
import logging
import sys
import time
import multiprocessing
from aioquic.asyncio import QuicConnectionProtocol, connect
from aioquic.quic.configuration import QuicConfiguration
from aioquic.quic.events import ConnectionTerminated, StreamDataReceived, StreamReset
import parameters
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("QuicClient")
active_protocols = []
is_quic_established = False
class TunnelClientProtocol(QuicConnectionProtocol):
def __init__(self, *args, **kwargs):
global is_quic_established
is_quic_established = False
super().__init__(*args, **kwargs)
self.loop = asyncio.get_event_loop()
self.tcp_connections = {}
self.tcp_syn_wait = {}
self.udp_addr_to_stream = {}
self.udp_stream_to_addr = {}
self.udp_stream_to_transport = {}
self.udp_last_activity = {}
active_protocols.append(self)
asyncio.create_task(self.cleanup_stale_udp_connections())
asyncio.create_task(self.check_start_connectivity())
async def check_start_connectivity(self):
global is_quic_established
try:
await asyncio.sleep(7)
if is_quic_established:
logger.info(f"Quic Established!")
else:
logger.info(f"Quic FAILED to connect")
self.connection_lost("quic connectivity")
except SystemExit as e:
logger.info(f"connectivity SystemExit: {e}")
except Exception as e:
logger.info(f"connectivity err: {e}")
def connection_lost(self, exc):
super().connection_lost(exc)
self.close_all_tcp_connections()
logger.info("QUIC connection lost. exit")
for protocol in active_protocols:
protocol.close_all_tcp_connections()
protocol.close_all_udp_connections()
protocol.close()
protocol = None
if self in active_protocols:
active_protocols.remove(self)
time.sleep(1)
sys.exit()
def close_all_tcp_connections(self):
logger.info("close all tcp")
for stream_id, (reader, writer) in self.tcp_connections.items():
logger.info(f"Closing TCP connection for stream {stream_id}...")
try:
writer.close()
except Exception as e:
logger.info(f"Error closing tcp socket: {e}")
for stream_id, (reader, writer) in self.tcp_syn_wait.items():
logger.info(f"Closing TCP connection for stream {stream_id}...")
try:
writer.close()
except Exception as e:
logger.info(f"Error closing tcp socket: {e}")
self.tcp_connections.clear()
self.tcp_syn_wait.clear()
def close_all_udp_connections(self):
logger.info("close all udp")
self.udp_addr_to_stream.clear()
self.udp_stream_to_addr.clear()
self.udp_last_activity.clear()
self.udp_stream_to_transport.clear()
def close_this_stream(self, stream_id):
try:
logger.info(f"FIN to stream={stream_id} sent")
self._quic.send_stream_data(stream_id, b"", end_stream=True)
self.transmit()
except Exception as e:
logger.info(f"Error closing stream at client: {e}")
try:
if stream_id in self.tcp_connections:
try:
writer = self.tcp_connections[stream_id][1]
writer.close()
del self.tcp_connections[stream_id]
except Exception as e:
logger.info(f"Error closing tcp estblsh at client: {e}")
if stream_id in self.tcp_syn_wait:
try:
writer = self.tcp_syn_wait[stream_id][1]
writer.close()
del self.tcp_syn_wait[stream_id]
except Exception as e:
logger.info(f"Error closing tcp syn at client: {e}")
if stream_id in self.udp_stream_to_addr:
try:
addr = self.udp_stream_to_addr.get(stream_id)
del self.udp_addr_to_stream[addr]
del self.udp_stream_to_addr[stream_id]
del self.udp_last_activity[stream_id]
del self.udp_stream_to_transport[stream_id]
except Exception as e:
logger.info(f"Error closing udp at client: {e}")
except Exception as e:
logger.info(f"Error closing socket at client: {e}")
async def cleanup_stale_udp_connections(self):
logger.info("UDP cleanup task running!")
check_time = min(parameters.udp_timeout, 60)
while True:
await asyncio.sleep(check_time)
current_time = self.loop.time()
stale_streams = [
stream_id for stream_id, last_time in self.udp_last_activity.items()
if current_time - last_time > parameters.udp_timeout
]
for stream_id in stale_streams:
logger.info(f"idle UDP stream={stream_id} timeout reached")
self.close_this_stream(stream_id)
async def forward_tcp_to_quic(self, stream_id):
logger.info(f"Task TCP to QUIC started")
try:
(reader, writer) = self.tcp_syn_wait[stream_id]
self.tcp_connections[stream_id] = (reader, writer)
del self.tcp_syn_wait[stream_id]
while True:
data = await reader.read(4096)
if not data:
break
self._quic.send_stream_data(stream_id=stream_id, data=data, end_stream=False)
self.transmit()
except Exception as e:
logger.info(f"Error forwarding TCP to QUIC: {e}")
finally:
logger.info(f"Task TCP to QUIC Ended")
self.close_this_stream(stream_id)
async def handle_tcp_connection(self, reader, writer, target_port):
stream_id = None
try:
stream_id = self._quic.get_next_available_stream_id()
self.tcp_syn_wait[stream_id] = (reader, writer)
req_data = parameters.quic_auth_code + "connect,tcp," + str(target_port) + ",!###!"
self._quic.send_stream_data(stream_id=stream_id, data=req_data.encode("utf-8"), end_stream=False)
self.transmit()
except Exception as e:
logger.info(f"Client Error handle tcp connection: {e}")
if stream_id is not None:
self.close_this_stream(stream_id)
async def forward_udp_to_quic(self, udp_protocol):
logger.info("Task UDP to Quic started")
stream_id = None
try:
while True:
data, addr = await udp_protocol.queue.get()
stream_id = self.udp_addr_to_stream.get(addr)
if stream_id is not None:
self._quic.send_stream_data(stream_id=stream_id, data=data, end_stream=False)
self.transmit()
self.udp_last_activity[stream_id] = self.loop.time()
else:
stream_id = self.new_udp_stream(addr, udp_protocol)
if stream_id is not None:
await asyncio.sleep(0.1)
self.udp_last_activity[stream_id] = self.loop.time()
self._quic.send_stream_data(stream_id=stream_id, data=data, end_stream=False)
self.transmit()
except Exception as e:
logger.info(f"Error forwarding UDP to QUIC: {e}")
finally:
logger.info(f"Task UDP to QUIC Ended")
if stream_id is not None:
self.close_this_stream(stream_id)
def new_udp_stream(self, addr, udp_protocol):
logger.info(f"new stream for UDP addr {addr} -> {udp_protocol.target_port}")
try:
stream_id = self._quic.get_next_available_stream_id()
self.udp_addr_to_stream[addr] = stream_id
self.udp_stream_to_addr[stream_id] = addr
self.udp_stream_to_transport[stream_id] = udp_protocol.transport
self.udp_last_activity[stream_id] = self.loop.time()
req_data = parameters.quic_auth_code + "connect,udp," + str(udp_protocol.target_port) + ",!###!"
self._quic.send_stream_data(stream_id=stream_id, data=req_data.encode("utf-8"), end_stream=False)
self.transmit()
return stream_id
except Exception as e:
logger.info(f"Client Error creating new udp stream: {e}")
return None
def quic_event_received(self, event):
if isinstance(event, StreamDataReceived):
try:
if event.end_stream:
logger.info(f"Stream={event.stream_id} closed by server.")
self.close_this_stream(event.stream_id)
elif event.stream_id in self.tcp_connections:
writer = self.tcp_connections[event.stream_id][1]
writer.write(event.data)
asyncio.create_task(writer.drain())
elif event.stream_id in self.udp_stream_to_addr:
addr = self.udp_stream_to_addr[event.stream_id]
transport = self.udp_stream_to_transport[event.stream_id]
transport.sendto(event.data, addr)
elif event.stream_id in self.tcp_syn_wait:
if event.data == (parameters.quic_auth_code + "i am ready,!###!").encode("utf-8"):
asyncio.create_task(self.forward_tcp_to_quic(event.stream_id))
else:
logger.warning("unknown Data arrived to client")
except Exception as e:
logger.info(f"Quic event client error: {e}")
elif isinstance(event, StreamReset):
logger.info(f"Stream {event.stream_id} reset unexpectedly.")
self.close_this_stream(event.stream_id)
elif isinstance(event, ConnectionTerminated):
logger.info(f"Connection lost: {event.reason_phrase}")
self.connection_lost(event.reason_phrase)
async def run_client():
global is_quic_established
configuration = QuicConfiguration(is_client=True)
configuration.verify_mode = parameters.quic_verify_cert
configuration.max_data = parameters.quic_max_data
configuration.max_stream_data = parameters.quic_max_stream_data
configuration.idle_timeout = parameters.quic_idle_timeout
configuration.max_datagram_size = parameters.quic_mtu
try:
logger.warning("Attempting to connect to QUIC server...")
async with connect(parameters.quic_local_ip,
parameters.vio_udp_client_port,
configuration=configuration,
create_protocol=TunnelClientProtocol,
local_port=parameters.quic_client_port) as client:
async def start_tcp_server(local_port, target_port):
logger.warning(f"client listen tcp:{local_port} -> to server tcp:{target_port}")
server = await asyncio.start_server(
lambda r, w: asyncio.create_task(handle_tcp_client(r, w, target_port)),
'0.0.0.0', local_port
)
async with server:
await server.serve_forever()
logger.info("tcp server finished")
async def handle_tcp_client(reader, writer, target_port):
while not active_protocols:
logger.info("Waiting for an active QUIC connection...")
await asyncio.sleep(1)
protocol = active_protocols[-1]
await protocol.handle_tcp_connection(reader, writer, target_port)
async def start_udp_server(local_port, target_port):
while True:
try:
logger.warning(f"client listen udp:{local_port} -> to server udp:{target_port}")
loop = asyncio.get_event_loop()
transport, udp_protocol = await loop.create_datagram_endpoint(
lambda: UdpProtocol(client, target_port),
local_addr=('0.0.0.0', local_port)
)
mytask = asyncio.create_task(handle_udp_client(udp_protocol))
while True:
await asyncio.sleep(0.05)
if udp_protocol.has_error:
mytask.cancel()
await asyncio.sleep(1)
break
logger.info(f"udp server finished")
except Exception as e:
logger.info(f"start_udp_server ERR: {e}")
async def handle_udp_client(udp_protocol):
logger.info("creating udp task ....")
while not active_protocols:
logger.info("Waiting for an active QUIC connection...")
await asyncio.sleep(1)
protocol = active_protocols[-1]
await protocol.forward_udp_to_quic(udp_protocol)
class UdpProtocol:
def __init__(self, client, target_port):
self.transport = None
self.client = client
self.target_port = target_port
self.has_error = False
self.queue = asyncio.Queue()
def connection_made(self, transport):
logger.info("NEW DGRAM listen created")
logger.info(transport.get_extra_info('socket'))
self.transport = transport
def datagram_received(self, data, addr):
self.queue.put_nowait((data, addr))
def error_received(self, exc):
logger.info(f"UDP error received: {exc}")
self.has_error = True
if self.transport:
self.transport.close()
logger.info("UDP transport closed")
def connection_lost(self, exc):
logger.info(f"UDP lost. {exc}")
self.has_error = True
if self.transport:
self.transport.close()
logger.info("UDP transport closed")
is_quic_established = True
tcp_servers_list = []
for lport, tport in parameters.tcp_port_mapping.items():
tcp_servers_list.append(start_tcp_server(lport, tport))
udp_servers_list = []
for lport, tport in parameters.udp_port_mapping.items():
udp_servers_list.append(start_udp_server(lport, tport))
await asyncio.gather(
asyncio.Future(),
*tcp_servers_list,
*udp_servers_list
)
except SystemExit as e:
logger.info(f"Caught SystemExit: {e}")
except asyncio.CancelledError as e:
logger.info(f"cancelling error: {e}. Retrying...")
except ConnectionError as e:
logger.info(f"Connection error: {e}. Retrying...")
except Exception as e:
logger.info(f"Generic error: {e}. Retrying...")
def Quic_client():
asyncio.run(run_client())
if __name__ == "__main__":
while True:
process = multiprocessing.Process(target=Quic_client)
process.start()
while process.is_alive():
time.sleep(5)
logger.info("client is dead. restarting ...")
time.sleep(1)

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gfk/client/vio_client.py Normal file
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from scapy.all import AsyncSniffer,IP,TCP,Raw,conf,Ether,get_if_hwaddr
import asyncio
import random
import parameters
import logging
import os
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("VioClient")
vps_ip = parameters.vps_ip
vio_tcp_server_port = parameters.vio_tcp_server_port
vio_tcp_client_port = parameters.vio_tcp_client_port
vio_udp_client_port = parameters.vio_udp_client_port
quic_local_ip = parameters.quic_local_ip
quic_client_port = parameters.quic_client_port
tcp_flags = getattr(parameters, 'tcp_flags', 'AP')
# Windows-specific: get local IP and gateway MAC for Ethernet frames
my_ip = getattr(parameters, 'my_ip', None)
gateway_mac = getattr(parameters, 'gateway_mac', None)
is_windows = os.name == 'nt'
try:
local_mac = get_if_hwaddr(conf.iface)
except Exception:
local_mac = None
tcp_options=[
('MSS', 1280),
('WScale', 8),
('SAckOK', ''),
]
async def async_sniff_realtime(qu1):
logger.info("sniffer started")
try:
def process_packet(packet):
# Check flags using 'in' to handle different flag orderings (AP vs PA)
flags = str(packet[TCP].flags) if packet.haslayer(TCP) else ''
if packet.haslayer(TCP) and packet[IP].src == vps_ip and packet[TCP].sport == vio_tcp_server_port and 'A' in flags and 'P' in flags:
data1 = packet[TCP].load
qu1.put_nowait(data1)
async def start_sniffer():
sniffer = AsyncSniffer(prn=process_packet,
filter=f"tcp and src host {vps_ip} and src port {vio_tcp_server_port}",
store=False)
sniffer.start()
return sniffer
sniffer = await start_sniffer()
return sniffer
except Exception as e:
logger.info(f"sniff Generic error: {e}....")
raise # Re-raise so caller knows sniffer failed
async def forward_vio_to_quic(qu1, transport):
logger.info(f"Task vio to Quic started")
addr = (quic_local_ip, quic_client_port)
try:
while True:
data = await qu1.get()
if data == None:
break
transport.sendto(data, addr)
except Exception as e:
logger.info(f"Error forwarding vio to Quic: {e}")
finally:
logger.info(f"Task vio to Quic Ended.")
# Build base packet based on OS
if is_windows and gateway_mac and my_ip and local_mac:
logger.info(f"Windows mode: using Ethernet frames (gw_mac={gateway_mac}, my_ip={my_ip})")
basepkt = Ether(dst=gateway_mac, src=local_mac) / IP(src=my_ip, dst=vps_ip) / TCP(sport=vio_tcp_client_port, dport=vio_tcp_server_port, seq=0, flags=tcp_flags, ack=0, options=tcp_options) / Raw(load=b"")
skt = conf.L2socket(iface=conf.iface)
else:
logger.info(f"Linux mode: using L3 socket")
basepkt = IP(dst=vps_ip) / TCP(sport=vio_tcp_client_port, dport=vio_tcp_server_port, seq=0, flags=tcp_flags, ack=0, options=tcp_options) / Raw(load=b"")
skt = conf.L3socket()
def send_to_violated_TCP(binary_data):
new_pkt = basepkt.copy()
new_pkt[TCP].seq = random.randint(1024,1048576)
new_pkt[TCP].ack = random.randint(1024,1048576)
new_pkt[TCP].load = binary_data
skt.send(new_pkt)
async def forward_quic_to_vio(protocol):
logger.info(f"Task QUIC to vio started")
try:
while True:
data = await protocol.queue.get()
if data == None:
break
send_to_violated_TCP(data)
except Exception as e:
logger.info(f"Error forwarding QUIC to vio: {e}")
finally:
logger.info(f"Task QUIC to vio Ended.")
async def start_udp_server(qu1):
while True:
try:
logger.warning(f"listen quic:{vio_udp_client_port} -> violated tcp:{vio_tcp_server_port}")
loop = asyncio.get_event_loop()
transport, udp_protocol = await loop.create_datagram_endpoint(
lambda: UdpProtocol(),
local_addr=('0.0.0.0', vio_udp_client_port)
)
task1 = asyncio.create_task(forward_quic_to_vio(udp_protocol))
task2 = asyncio.create_task(forward_vio_to_quic(qu1, transport))
while True:
await asyncio.sleep(0.02)
if udp_protocol.has_error:
task1.cancel()
task2.cancel()
await asyncio.sleep(1)
logger.info(f"all task cancelled")
break
except Exception as e:
logger.info(f"vioclient ERR: {e}")
finally:
transport.close()
await asyncio.sleep(0.5)
transport.abort()
logger.info("aborting transport ...")
await asyncio.sleep(1.5)
logger.info("vio inner finished")
class UdpProtocol:
def __init__(self):
self.transport = None
self.has_error = False
self.queue = asyncio.Queue()
def connection_made(self, transport):
logger.info("NEW DGRAM listen created")
logger.info(transport.get_extra_info('socket'))
self.transport = transport
def pause_writing(self):
pass
def resume_writing(self):
pass
def datagram_received(self, data, addr):
self.queue.put_nowait(data)
def error_received(self, exc):
logger.info(f"UDP error received: {exc}")
self.has_error = True
if self.transport:
self.transport.close()
logger.info("UDP transport closed")
def connection_lost(self, exc):
logger.info(f"UDP lost. {exc}")
self.has_error = True
if self.transport:
self.transport.close()
logger.info("UDP transport closed")
async def run_vio_client():
sniffer = None
try:
qu1 = asyncio.Queue()
sniffer = await async_sniff_realtime(qu1)
await asyncio.gather(
start_udp_server(qu1),
return_exceptions=True
)
logger.info("end ?")
except SystemExit as e:
logger.info(f"Caught SystemExit: {e}")
except asyncio.CancelledError as e:
logger.info(f"cancelling error: {e}")
except ConnectionError as e:
logger.info(f"Connection error: {e}")
except Exception as e:
logger.info(f"Generic error: {e}")
finally:
if sniffer is not None:
sniffer.stop()
logger.info("stop sniffer")
if __name__ == "__main__":
asyncio.run(run_vio_client())

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gfk/server/mainserver.py Normal file
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import subprocess
import os
import time
import sys
import signal
scripts = ['quic_server.py', 'vio_server.py']
def run_script(script_name):
# Use sys.executable to run with the same Python interpreter (venv)
os.system(f"pkill -f {script_name}")
time.sleep(0.5)
p = subprocess.Popen([sys.executable, script_name])
return p
processes = []
def signal_handler(sig, frame):
print('You pressed Ctrl+C!')
for p in processes:
print("terminated:",p)
p.terminate()
sys.exit(0)
if __name__ == "__main__":
p1 = run_script(scripts[0])
time.sleep(1)
p2 = run_script(scripts[1])
processes.extend([p1, p2]) # Modify global list, don't shadow it
signal.signal(signal.SIGINT, signal_handler)
p1.wait()
p2.wait()
print("All subprocesses have completed.")

310
gfk/server/quic_server.py Normal file
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import asyncio
import logging
import signal
import sys
from aioquic.asyncio import QuicConnectionProtocol, serve
from aioquic.quic.configuration import QuicConfiguration
from aioquic.quic.events import ConnectionTerminated, StreamDataReceived, StreamReset
import parameters
# Setup basic logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("QuicServer")
# Global list to track active protocol instances
active_protocols = []
class TunnelServerProtocol(QuicConnectionProtocol):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.loop = asyncio.get_event_loop()
self.tcp_connections = {} # Map TCP connections to QUIC streams
self.udp_connections = {} # Map UDP connections to QUIC streams
self.udp_last_activity = {} # Track last activity time for UDP connections
active_protocols.append(self) # Add this protocol instance to the list
try:
asyncio.create_task(self.cleanup_stale_udp_connections())
except Exception as e:
logger.info(f"Error in cleanup_stale_udp task: {e}")
def connection_lost(self, exc):
logger.info("Quic channel lost")
if self in active_protocols:
active_protocols.remove(self)
super().connection_lost(exc)
self.close_all_tcp_connections()
self.close_all_udp_connections()
def close_all_tcp_connections(self):
logger.info("Closing all TCP connections from server...")
for stream_id, (reader, writer) in self.tcp_connections.items():
logger.info(f"Closing TCP connection for stream {stream_id}...")
writer.close()
self.tcp_connections.clear()
def close_all_udp_connections(self):
logger.info("Closing all UDP connections from server...")
for stream_id, (transport, _) in self.udp_connections.items():
logger.info(f"Closing UDP connection for stream {stream_id}...")
transport.close()
self.udp_connections.clear()
self.udp_last_activity.clear()
def close_this_stream(self, stream_id):
try:
logger.info(f"FIN to stream={stream_id} sent")
self._quic.send_stream_data(stream_id, b"", end_stream=True) # Send FIN flag
self.transmit() # Send the FIN flag over the network
except Exception as e:
logger.info(f"Error closing stream at server: {e}")
try:
if stream_id in self.tcp_connections:
writer = self.tcp_connections[stream_id][1]
writer.close()
del self.tcp_connections[stream_id]
if stream_id in self.udp_connections:
transport, _ = self.udp_connections[stream_id]
transport.close()
del self.udp_connections[stream_id]
del self.udp_last_activity[stream_id]
except Exception as e:
logger.info(f"Error closing socket at server: {e}")
async def cleanup_stale_udp_connections(self):
logger.info("UDP cleanup task running!")
check_time = min(parameters.udp_timeout,60)
while True:
await asyncio.sleep(check_time) # Run cleanup every 60 seconds
current_time = self.loop.time()
stale_streams = [
stream_id for stream_id, last_time in self.udp_last_activity.items()
if current_time - last_time > parameters.udp_timeout
]
for stream_id in stale_streams:
logger.info(f"idle UDP stream={stream_id} timeout reached")
self.close_this_stream(stream_id)
async def forward_tcp_to_quic(self, stream_id, reader):
logger.info(f"Task TCP to QUIC started")
try:
while True:
data = await reader.read(4096) # Read data from TCP socket
if not data:
break
# logger.info(f"Forwarding data from TCP to QUIC on stream {stream_id}")
self._quic.send_stream_data(stream_id=stream_id, data=data, end_stream=False)
self.transmit() # Flush
except Exception as e:
logger.info(f"Error forwarding TCP to QUIC: {e}")
finally:
logger.info(f"Task TCP to QUIC Ended")
self.close_this_stream(stream_id)
async def connect_tcp(self, stream_id, target_port):
logger.info(f"Connecting to TCP:{target_port}...")
try:
reader, writer = await asyncio.open_connection(parameters.xray_server_ip_address, target_port)
logger.info(f"TCP connection established for stream {stream_id} to port {target_port}")
# Start forwarding data from TCP to QUIC
asyncio.create_task(self.forward_tcp_to_quic(stream_id, reader))
resp_data = parameters.quic_auth_code + "i am ready,!###!"
self._quic.send_stream_data(stream_id=stream_id, data=resp_data.encode("utf-8"), end_stream=False)
self.transmit() # Flush
self.tcp_connections[stream_id] = (reader, writer)
except Exception as e:
logger.info(f"Failed to establish TCP:{target_port} connection: {e}")
self.close_this_stream(stream_id)
async def forward_udp_to_quic(self, stream_id, protocol):
logger.info(f"Task UDP to QUIC started")
try:
while True:
data, _ = await protocol.queue.get() # Wait for data from UDP
if(data == None):
break
# logger.info(f"Forwarding data from UDP to QUIC on stream {stream_id}")
self._quic.send_stream_data(stream_id, data)
self.transmit() # Flush
self.udp_last_activity[stream_id] = self.loop.time()
except Exception as e:
logger.info(f"Error forwarding UDP to QUIC: {e}")
finally:
logger.info(f"Task UDP to QUIC Ended")
self.close_this_stream(stream_id)
async def connect_udp(self, stream_id, target_port):
class UdpProtocol:
def __init__(self):
self.transport = None
self.queue = asyncio.Queue()
self.stream_id = stream_id
def connection_made(self, transport):
self.transport = transport
def datagram_received(self, data, addr):
logger.info(f"put this to queue data={data} addr={addr}")
self.queue.put_nowait((data, addr))
def error_received(self, exc):
logger.info(f"UDP error received: {exc}")
self.queue.put_nowait((None, None)) # to cancel task
if(self.transport):
self.transport.close()
logger.info("UDP transport closed")
def connection_lost(self, exc):
logger.info("UDP connection lost.")
self.queue.put_nowait((None, None)) # to cancel task
if(self.transport):
self.transport.close()
logger.info("UDP transport closed")
try:
# Create a UDP socket
logger.info(f"Connecting to UDP:{target_port}...")
loop = asyncio.get_event_loop()
transport, protocol = await loop.create_datagram_endpoint(
UdpProtocol,
remote_addr=(parameters.xray_server_ip_address, target_port)
)
self.udp_connections[stream_id] = (transport, protocol)
self.udp_last_activity[stream_id] = self.loop.time() # Track last activity time
logger.info(f"UDP connection established for stream {stream_id} to port {target_port}")
asyncio.create_task(self.forward_udp_to_quic(stream_id, protocol))
except Exception as e:
logger.info(f"Failed to establish UDP connection: {e}")
def quic_event_received(self, event):
# print("EVENT",event)
if isinstance(event, StreamDataReceived):
try:
# logger.info(f"Server received from QUIC on stream {event.stream_id}")
# logger.info(f"Server TCP IDs -> {self.tcp_connections.keys()}")
# logger.info(f"Server UDP IDs -> {self.udp_connections.keys()}")
if event.end_stream:
logger.info(f"Stream={event.stream_id} closed by client.")
self.close_this_stream(event.stream_id)
# Forward data to the corresponding TCP connection
elif event.stream_id in self.tcp_connections:
writer = self.tcp_connections[event.stream_id][1]
writer.write(event.data) # Send data over TCP
try:
asyncio.create_task(writer.drain())
except ConnectionResetError as e42:
logger.info(f"ERR in writer drain task : {e42}")
except Exception as e43:
logger.info(f"ERR in writer drain task : {e43}")
# Forward data to the corresponding UDP connection
elif event.stream_id in self.udp_connections:
transport, _ = self.udp_connections[event.stream_id]
transport.sendto(event.data) # Send data over UDP
self.udp_last_activity[event.stream_id] = self.loop.time() # Update last activity time
else:
socket_type = None
socket_port = 0
# Assume req is like => auth+"connect,udp,443,!###!"
new_req = event.data.split(b",!###!", 1)
req_header = ""
try:
req_header = new_req[0].decode("utf-8")
except Exception as e47:
logger.info(f"ERR in req decoding : {e47}")
req_header=""
logger.info("New req comes -> " + req_header)
if req_header.startswith(parameters.quic_auth_code + "connect,"):
j = len(parameters.quic_auth_code) + 8
if req_header[j:j + 3] == "tcp":
socket_type = "tcp"
elif req_header[j:j + 3] == "udp":
socket_type = "udp"
try:
socket_port = int(req_header[j + 4:])
except ValueError:
logger.info("Invalid port.")
if socket_port > 0:
if socket_type == "tcp":
# New stream detected, create a TCP connection
asyncio.create_task(self.connect_tcp(event.stream_id, socket_port))
elif socket_type == "udp":
# New stream detected, create a UDP connection
asyncio.create_task(self.connect_udp(event.stream_id, socket_port))
else:
logger.info("Invalid Req: socket type unknown.")
else:
logger.info("Invalid Req: socket port unknown.")
else:
logger.info("Invalid Req header")
except Exception as e:
logger.info(f"Quic event server error: {e}")
elif isinstance(event, StreamReset):
# Handle stream reset (client closed the stream)
logger.info(f"Stream {event.stream_id} reset by client.")
self.close_this_stream(event.stream_id)
elif isinstance(event, ConnectionTerminated):
logger.info(f"Connection lost: {event.reason_phrase}")
self.connection_lost(event.reason_phrase)
async def run_server():
configuration = QuicConfiguration(is_client=False)
configuration.load_cert_chain(parameters.quic_cert_filepath[0], parameters.quic_cert_filepath[1])
configuration.max_data = parameters.quic_max_data
configuration.max_stream_data = parameters.quic_max_stream_data
configuration.idle_timeout = parameters.quic_idle_timeout
configuration.max_datagram_size = parameters.quic_mtu
# Start QUIC server
await serve("0.0.0.0", parameters.quic_server_port, configuration=configuration, create_protocol=TunnelServerProtocol)
logger.warning(f"Server listening for QUIC on port {parameters.quic_server_port}")
# Keep the server running
await asyncio.Future() # Run forever
def handle_shutdown(signum, frame):
logger.info("Shutting down server gracefully...")
for protocol in active_protocols:
protocol.close_all_tcp_connections()
protocol.close_all_udp_connections()
protocol.close()
logger.info("Server shutdown complete.")
sys.exit(0)
if __name__ == "__main__":
signal.signal(signal.SIGTERM, handle_shutdown)
signal.signal(signal.SIGINT, handle_shutdown)
asyncio.run(run_server())

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from scapy.all import AsyncSniffer,IP,TCP,Raw,conf
import asyncio
import random
import parameters
import logging
import time
# Setup basic logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("VioServer")
vps_ip = parameters.vps_ip
vio_tcp_server_port = parameters.vio_tcp_server_port
vio_udp_server_port = parameters.vio_udp_server_port
quic_local_ip = parameters.quic_local_ip
quic_server_port = parameters.quic_server_port
tcp_flags = getattr(parameters, 'tcp_flags', 'AP')
global client_ip # obtained during sniffing
global client_port # obtained during sniffing
client_ip = "1.1.1.1"
client_port = 443
tcp_options=[
('MSS', 1280), # Maximum Segment Size
('WScale', 8), # Window Scale
('SAckOK', ''), # Selective ACK Permitted
]
async def async_sniff_realtime(qu1):
logger.info("sniffer started")
try:
def process_packet(packet):
# logger.info(f"sniffed before if at {time.time()}")
# Check flags using 'in' to handle different flag orderings (AP vs PA)
flags = str(packet[TCP].flags) if packet.haslayer(TCP) else ''
if packet.haslayer(TCP) and packet[TCP].dport == vio_tcp_server_port and 'A' in flags and 'P' in flags:
data1 = packet[TCP].load
client_ip = packet[IP].src
client_port = packet[TCP].sport
qu1.put_nowait( (data1,client_ip,client_port) )
# logger.info(f"sniffed on tcp : {client_ip} {client_port} at {time.time()}")
async def start_sniffer():
sniffer = AsyncSniffer(prn=process_packet,
filter=f"tcp and dst host {vps_ip} and dst port {vio_tcp_server_port}",
store=False)
sniffer.start()
return sniffer
sniffer = await start_sniffer()
return sniffer
except Exception as e:
logger.info(f"sniff Generic error: {e}....")
async def forward_vio_to_quic(qu1, transport):
global client_ip
global client_port
logger.info(f"Task vio to Quic started")
addr = (quic_local_ip,quic_server_port)
# addr = ("192.168.1.140",quic_server_port)
try:
while True:
# update client_ip, client_port from the queue
data,client_ip,client_port = await qu1.get()
# logger.info(f"data qu1 fetched {data} at {time.time()}")
if(data == None):
break
transport.sendto(data , addr)
# logger.info(f"data sent to udp {data} -> {addr} at {time.time()}")
# qu1.task_done()
except Exception as e:
logger.info(f"Error forwarding vio to Quic: {e}")
finally:
logger.info(f"Task vio to Quic Ended.")
basepkt = IP(src=vps_ip) / TCP(sport=vio_tcp_server_port, seq=1, flags=tcp_flags, ack=0, options=tcp_options) / Raw(load=b"")
skt = conf.L3socket()
def send_to_violated_TCP(binary_data,client_ip,client_port):
# logger.info(f"client ip = {client_ip}")
new_pkt = basepkt.copy()
new_pkt[IP].dst = client_ip
new_pkt[TCP].dport = client_port
new_pkt[TCP].seq = random.randint(1024,1048576)
new_pkt[TCP].ack = random.randint(1024,1048576)
new_pkt[TCP].load = binary_data
skt.send(new_pkt)
async def forward_quic_to_vio(protocol):
logger.info(f"Task QUIC to vio started")
global client_ip
global client_port
try:
while True:
data = await protocol.queue.get() # Wait for data from UDP
if(data == None):
break
send_to_violated_TCP(data,client_ip,client_port)
# logger.info(f"data send to tcp {data} at {time.time()}")
except Exception as e:
logger.info(f"Error forwarding QUIC to vio: {e}")
finally:
logger.info(f"Task QUIC to vio Ended.")
async def start_udp_server(qu1):
while True:
try:
logger.warning(f"violated tcp:{vio_tcp_server_port} -> quic {quic_local_ip}:{quic_server_port} -> ")
loop = asyncio.get_event_loop()
transport, udp_protocol = await loop.create_datagram_endpoint(
lambda: UdpProtocol(),
local_addr=("0.0.0.0", vio_udp_server_port),
remote_addr=(quic_local_ip, quic_server_port)
# remote_addr=("192.168.1.140", quic_server_port)
)
task1 = asyncio.create_task(forward_quic_to_vio(udp_protocol))
task2 = asyncio.create_task(forward_vio_to_quic(qu1,transport))
while True:
await asyncio.sleep(0.02) # this make async loop to switch better between process
if(udp_protocol.has_error):
task1.cancel()
task2.cancel()
await asyncio.sleep(1)
logger.info(f"all task cancelled")
break
except Exception as e:
logger.info(f"vioServer ERR: {e}")
finally:
transport.close()
await asyncio.sleep(0.5)
transport.abort()
logger.info("aborting transport ...")
await asyncio.sleep(1.5)
logger.info("vio inner finished")
class UdpProtocol:
def __init__(self):
self.transport = None
self.has_error = False
self.queue = asyncio.Queue()
def connection_made(self, transport):
logger.info("NEW DGRAM socket created")
logger.info(transport.get_extra_info('socket'))
self.transport = transport
def pause_writing(self):
pass # UDP doesn't need flow control, but we had to implement
def resume_writing(self):
pass # UDP doesn't need flow control, but we had to implement
def datagram_received(self, data, addr):
self.queue.put_nowait(data)
# logger.info(f"data received from udp {data} at {time.time()}")
def error_received(self, exc):
logger.info(f"UDP error received: {exc}")
self.has_error = True
if(self.transport):
self.transport.close()
logger.info("UDP transport closed")
def connection_lost(self, exc):
logger.info(f"UDP lost. {exc}")
self.has_error = True
if(self.transport):
self.transport.close()
logger.info("UDP transport closed")
async def run_vio_server():
sniffer = None
try:
qu1 = asyncio.Queue()
sniffer = await async_sniff_realtime(qu1)
await asyncio.gather(
start_udp_server(qu1),
return_exceptions=True
)
logger.info("end ?")
except SystemExit as e:
logger.info(f"Caught SystemExit: {e}")
except asyncio.CancelledError as e:
logger.info(f"cancelling error: {e}")
except ConnectionError as e:
logger.info(f"Connection error: {e}")
except Exception as e:
logger.info(f"Generic error: {e}")
finally:
if sniffer is not None:
sniffer.stop()
logger.info("stop sniffer")
if __name__ == "__main__":
asyncio.run(run_vio_server())

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@echo off
:: GFW-knocker Client Launcher
:: Double-click to run
:: Check for admin rights
net session >nul 2>&1
if %errorlevel% neq 0 (
echo Requesting Administrator privileges...
powershell -Command "Start-Process '%~f0' -Verb RunAs"
exit /b
)
echo.
echo ===============================================
echo GFW-KNOCKER CLIENT (Python/QUIC Proxy)
echo ===============================================
echo.
echo Requirements:
echo - Npcap (will prompt to install)
echo - Python 3.x (will prompt to install)
echo.
echo Once connected, configure your browser:
echo.
echo FIREFOX:
echo Settings ^> Network Settings ^> Settings
echo Select "Manual proxy configuration"
echo SOCKS Host: 127.0.0.1 Port: 1080
echo Select SOCKS v5
echo Check "Proxy DNS when using SOCKS v5"
echo.
echo CHROME (launch with proxy):
echo chrome.exe --proxy-server="socks5://127.0.0.1:1080"
echo.
echo To verify: Visit https://ifconfig.me
echo (Should show your server IP, not your home IP)
echo.
echo Press Ctrl+C to disconnect
echo ===============================================
echo.
:: Run the PowerShell script with gfk backend
powershell -ExecutionPolicy Bypass -NoExit -File "%~dp0paqet-client.ps1" -Backend gfk

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@echo off
:: Paqet Client Launcher
:: Double-click to run
:: Check for admin rights
net session >nul 2>&1
if %errorlevel% neq 0 (
echo Requesting Administrator privileges...
powershell -Command "Start-Process '%~f0' -Verb RunAs"
exit /b
)
echo.
echo ===============================================
echo PAQET CLIENT (KCP Raw Socket Proxy)
echo ===============================================
echo.
echo Once connected, configure your browser:
echo.
echo FIREFOX:
echo Settings ^> Network Settings ^> Settings
echo Select "Manual proxy configuration"
echo SOCKS Host: 127.0.0.1 Port: 1080
echo Select SOCKS v5
echo Check "Proxy DNS when using SOCKS v5"
echo.
echo CHROME (launch with proxy):
echo chrome.exe --proxy-server="socks5://127.0.0.1:1080"
echo.
echo To verify: Visit https://ifconfig.me
echo (Should show your server IP, not your home IP)
echo.
echo Press Ctrl+C to disconnect
echo ===============================================
echo.
:: Run the PowerShell script with paqet backend
powershell -ExecutionPolicy Bypass -NoExit -File "%~dp0paqet-client.ps1" -Backend paqet

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