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chore(*) refactor Phantun and fake-tcp to their own crates
This commit is contained in:
Datong Sun
parent
86c6a3f801
commit
4a9e41b0b7
20
Cargo.toml
20
Cargo.toml
@ -1,16 +1,6 @@
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[package]
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name = "phantom"
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version = "0.1.0"
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edition = "2018"
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[workspace]
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[dependencies]
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bytes = "1"
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pnet = "0.28.0"
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tokio-tun = "0.3.15"
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tokio = { version = "1.11.0", features = ["full"] }
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lru_time_cache = "0.11.11"
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rand = { version = "0.8.4", features = ["small_rng"] }
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clap = "2.33.3"
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log = "0.4"
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pretty_env_logger = "0.4.0"
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socket2 = { version = "0.4.2", features = ["all"] }
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members = [
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"fake-tcp",
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"phantun",
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]
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146
README.md
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146
README.md
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@ -0,0 +1,146 @@
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# Phantun
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A lightweight and fast UDP to TCP obfuscator.
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## Overview
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Phanton is a project that obfuscated UDP packets into TCP connections. It aims to
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achieve maximum performance with minimum processing and encapsulation overhead.
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It is commonly used in environments where UDP is blocked/throttled but TCP is allowed through.
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Phanton simply converts a stream of UDP packets into obfuscated TCP stream packets. The TCP stack
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used by Phantun is designed to pass through most L3/L4 stateful/stateless firewalls/NAT
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devices. It will **not** be able to pass through L7 proxies.
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However, the advantage of this approach is that none of the common UDP over TCP performance killer
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such as retransmissions and flow control will occur. The underlying UDP properties such as
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out-of-order delivery are fully preserved even if the connection ends up looking like a TCP
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connection from the perspective of firewalls/NAT devices.
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## Usage
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Phantun creates TUN interface for both the Client and Server. For Client, Phantun assigns itself the IP address
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`192.168.200.2` and for Server, it assigns `192.168.201.2`. Therefore, your Kernel must have
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`net.ipv4.ip_forward` enabled and setup appropriate iptables rules for NAT between your physical
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NIC address and Phantun's TUN interface address.
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### Enable Kernel IP forwarding
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Edit `/etc/sysctl.conf`, add `net.ipv4.ip_forward=1` and run `sudo sysctl -p /etc/sysctl.conf`.
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### Add required firewall rules (using nftables as an example)
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#### Client
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Client simply need SNAT enabled on the physical interface to translate Phantun's address into
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one that can be used on the physical network. This can be done simply with masquerade.
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Note: change `eth0` to whatever actual physical interface name is
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```
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table inet nat {
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chain postrouting {
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type nat hook postrouting priority srcnat; policy accept;
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iifname tun0 oif eth0 masquerade
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}
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}
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```
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#### Server
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Server needs to DNAT the TCP listening port to Phantun's TUN interface address.
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Note: change `eth0` to whatever actual physical interface name is and `4567` to
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actual TCP port number used by Phanton server
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```
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table ip nat {
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chain prerouting {
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type nat hook prerouting priority dstnat; policy accept;
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iif eth0 tcp dport 4567 dnat to 192.168.201.2
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}
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}
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```
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### Give Phantun binaries required capability to it can be run as non-root (Optional)
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It is ill-advised to run network facing applications as root user. Phantun can be run fully
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as non-root user with the `cap_net_admin` capability.
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```
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sudo setcap cap_net_admin=+pe phantun_server
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sudo setcap cap_net_admin=+pe phantun_client
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```
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### Start
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#### Server
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Note: `4567` is the TCP port Phantun should listen on and must corresponds to the DNAT
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rule specified above. `127.0.0.1:1234` is the UDP Server to connect to for new connections.
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```
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RUST_LOG=info /usr/local/bin/phantun_server --local 4567 --remote 127.0.0.1:1234
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```
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#### Client
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Note: `127.0.0.1:1234` is the UDP address and port Phantun should listen on. `10.0.0.1:4567` is
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the Phantun Server to connect.
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```
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RUST_LOG=info /usr/local/bin/phantun_client --local 127.0.0.1:1234 --remote 10.0.0.1:4567
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```
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## MTU overhead
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Phantun aims to keep tunneling overhead to the minimum. The overhead compared to a plain UDP packet
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is the following:
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Plain UDP packet: 20 byte IP header + 8 byte UDP header = 28 bytes
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Phantun obfuscated UDP packet: 20 byte IP header + 20 byte TCP header = 40 bytes
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Phantun's additional overhead: 12 bytes. I other words, when using Phantun, the usable payload for
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UDP packet is reduced by 12 bytes. This is the minimum overhead possible when doing such kind
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of obfuscation.
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## Version compatibility
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While the TCP stack is fairly stable, the general expectation is that you should run same minor versions
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of Server/Client of Phantun on both ends to ensure maximum compatibility.
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## Compariation to udp2raw
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[udp2raw](https://github.com/wangyu-/udp2raw-tunnel) is another popular project by [@wangyu-](https://github.com/wangyu-)
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that is very similiar to what Phantun can do. In fact I took inspirations of Phantun from udp2raw. The biggest reason for
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developing Phanton is because of lack of performance when running udp2raw (especially on multi-core systems such as Raspberry Pi).
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However, the goal is never to be as feature complete as udp2raw and only support the most common use cases. Most notably, UDP over ICMP
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and UDP over UDP mode are not supported and there is no anti-replay nor encryption support. The benefit of this is much better
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performance overall and less MTU overhead because lack of additional headers inside the TCP payload.
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Here is a quick overview of comparison between those two to help you choose:
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| | Phantun | udp2raw |
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|--------------------------------------------------|:-------------:|:-----------------:|
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| UDP over FakeTCP obfuscation | ✅ | ✅ |
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| UDP over ICMP obfuscation | ❌ | ✅ |
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| UDP over UDP obfuscation | ❌ | ✅ |
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| Multi-threaded | ✅ | ❌ |
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| Throughput | Better | Good |
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| Raw IP mode | TUN interface | Raw sockets + BPF |
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| Tunneling MTU overhead | 12 bytes | 44 bytes |
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| Seprate TCP connections for each UDP connection | Client/Server | Server only |
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| Anti-replay, encryption | ❌ | ✅ |
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| IPv6 | Planned | ✅ |
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## License
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||||
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Copyright 2021 Datong Sun <dndx@idndx.com>
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||||
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Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||
[https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license
|
||||
<LICENSE-MIT or [https://opensource.org/licenses/MIT](https://opensource.org/licenses/MIT)>, at your
|
||||
option. Files in the project may not be
|
||||
copied, modified, or distributed except according to those terms.
|
||||
19
fake-tcp/Cargo.toml
Normal file
19
fake-tcp/Cargo.toml
Normal file
@ -0,0 +1,19 @@
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||||
[package]
|
||||
name = "fake-tcp"
|
||||
version = "0.1.0"
|
||||
edition = "2018"
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||||
authors = ["Datong Sun <dndx@idndx.com>"]
|
||||
license = "MIT OR Apache-2.0"
|
||||
repository = "https://github.com/dndx/phantun"
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||||
readme = "README.md"
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||||
description = """
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A TUN interface based, user space, asynchronous and high performance TCP stack that allows
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||||
packet oriented tunneling with minimum overhead.
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||||
"""
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||||
[dependencies]
|
||||
bytes = "1"
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pnet = "0.28.0"
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||||
tokio-tun = "0.3.15"
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||||
tokio = { version = "1.11.0", features = ["full"] }
|
||||
rand = { version = "0.8.4", features = ["small_rng"] }
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||||
log = "0.4"
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||||
201
fake-tcp/LICENSE-APACHE
Normal file
201
fake-tcp/LICENSE-APACHE
Normal file
@ -0,0 +1,201 @@
|
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Apache License
|
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fake-tcp/LICENSE-MIT
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fake-tcp/LICENSE-MIT
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fake-tcp/README.md
Normal file
14
fake-tcp/README.md
Normal file
@ -0,0 +1,14 @@
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# fake-tcp
|
||||
|
||||
A TUN interface based, user space, asynchronous and high performance TCP stack that allows
|
||||
packet oriented tunneling with minimum overhead.
|
||||
|
||||
## License
|
||||
|
||||
Copyright 2021 Datong Sun <dndx@idndx.com>
|
||||
|
||||
Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||
[https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license
|
||||
<LICENSE-MIT or [https://opensource.org/licenses/MIT](https://opensource.org/licenses/MIT)>, at your
|
||||
option. Files in the project may not be
|
||||
copied, modified, or distributed except according to those terms.
|
||||
BIN
images/traffic-flow.png
Normal file
BIN
images/traffic-flow.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 73 KiB |
20
phantun/Cargo.toml
Normal file
20
phantun/Cargo.toml
Normal file
@ -0,0 +1,20 @@
|
||||
[package]
|
||||
name = "phantun"
|
||||
version = "0.1.0"
|
||||
edition = "2018"
|
||||
authors = ["Datong Sun <dndx@idndx.com>"]
|
||||
license = "MIT OR Apache-2.0"
|
||||
repository = "https://github.com/dndx/phantun"
|
||||
readme = "README.md"
|
||||
description = """
|
||||
Turns transforms UDP stream into (fake) TCP streams that can go through
|
||||
Layer 4 firewalls.
|
||||
"""
|
||||
[dependencies]
|
||||
clap = "2.33.3"
|
||||
socket2 = { version = "0.4.2", features = ["all"] }
|
||||
fake-tcp = { path = "../fake-tcp" }
|
||||
tokio-tun = "0.3.15"
|
||||
tokio = { version = "1.11.0", features = ["full"] }
|
||||
log = "0.4"
|
||||
pretty_env_logger = "0.4.0"
|
||||
201
phantun/LICENSE-APACHE
Normal file
201
phantun/LICENSE-APACHE
Normal file
@ -0,0 +1,201 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
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|
||||
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|
||||
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|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
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|
||||
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|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
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|
||||
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|
||||
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|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
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|
||||
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|
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|
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|
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|
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|
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|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
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|
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|
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|
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||||
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|
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|
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|
||||
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||||
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||||
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||||
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END OF TERMS AND CONDITIONS
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|
||||
APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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Unless required by applicable law or agreed to in writing, software
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27
phantun/LICENSE-MIT
Normal file
27
phantun/LICENSE-MIT
Normal file
@ -0,0 +1,27 @@
|
||||
MIT License
|
||||
|
||||
Copyright (c) 2014-2021 The Rust Project Developers
|
||||
|
||||
Permission is hereby granted, free of charge, to any
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limitation the rights to use, copy, modify, merge,
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conditions:
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The above copyright notice and this permission notice
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shall be included in all copies or substantial portions
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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DEALINGS IN THE SOFTWARE.
|
||||
13
phantun/README.md
Normal file
13
phantun/README.md
Normal file
@ -0,0 +1,13 @@
|
||||
# Phantun
|
||||
|
||||
Client/Server crate, see [Phantun Project README.md](https://github.com/dndx/phantun/blob/main/README.md) for more information.
|
||||
|
||||
## License
|
||||
|
||||
Copyright 2021 Datong Sun <dndx@idndx.com>
|
||||
|
||||
Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||
[https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license
|
||||
<LICENSE-MIT or [https://opensource.org/licenses/MIT](https://opensource.org/licenses/MIT)>, at your
|
||||
option. Files in the project may not be
|
||||
copied, modified, or distributed except according to those terms.
|
||||
@ -1,7 +1,7 @@
|
||||
use clap::{App, Arg};
|
||||
use fake_tcp::packet::MAX_PACKET_LEN;
|
||||
use fake_tcp::{Socket, Stack};
|
||||
use log::{debug, error, info};
|
||||
use phantom::fake_tcp::packet::MAX_PACKET_LEN;
|
||||
use phantom::fake_tcp::{Socket, Stack};
|
||||
use std::collections::HashMap;
|
||||
use std::convert::TryInto;
|
||||
use std::net::{SocketAddr, SocketAddrV4};
|
||||
@ -1,7 +1,7 @@
|
||||
use clap::{App, Arg};
|
||||
use fake_tcp::packet::MAX_PACKET_LEN;
|
||||
use fake_tcp::Stack;
|
||||
use log::info;
|
||||
use phantom::fake_tcp::packet::MAX_PACKET_LEN;
|
||||
use phantom::fake_tcp::Stack;
|
||||
use std::net::SocketAddrV4;
|
||||
use tokio::net::UdpSocket;
|
||||
use tokio::time::{self, Duration};
|
||||
@ -1 +0,0 @@
|
||||
pub mod fake_tcp;
|
||||
Loading…
x
Reference in New Issue
Block a user