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https://github.com/0xekez/tcp-proxy
A TCP proxy in 30 lines of Rust.
https://github.com/0xekez/tcp-proxy
network proxy rust tcp
Last synced: about 1 month ago
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A TCP proxy in 30 lines of Rust.
- Host: GitHub
- URL: https://github.com/0xekez/tcp-proxy
- Owner: 0xekez
- Created: 2021-07-02T02:38:43.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2021-07-12T16:24:06.000Z (over 3 years ago)
- Last Synced: 2024-05-19T03:14:19.335Z (7 months ago)
- Topics: network, proxy, rust, tcp
- Language: Shell
- Homepage: https://zmedley.com/tcp-proxy.html
- Size: 6.84 KB
- Stars: 49
- Watchers: 1
- Forks: 9
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Proxy
A simple Rust TCP proxy. Intended to be educational - [don't use this](https://github.com/tokio-rs/tokio/discussions/3173) in production.
## Terminoligy
`server` - the listener we'd like to proxy tcp connections to.
`client` - the initiator of connections to the server.
## Benchmarking
### Using localhost:
1. Start the proxy in one terminal window
```bash
cargo run -- -c 0.0.0.0:1212 -s 127.0.0.1:1313
```
2. Listen on the origin port in another window
```
nc -l 1313 > /dev/null
```
3. Send a bunch of traffic from another window
```
dd if=/dev/zero bs=1024 count=900000 | nc -v 127.0.0.1 1212
```
### Using network namespaces:
If you have a debian linux machine you can use `ns_test.sh` to run a
benchmark using three network namespaces.
## Local Results
Using the proxy:
```
~ dd if=/dev/zero bs=1024 count=900000 | nc -v 127.0.0.1 1212
Connection to 127.0.0.1 port 1212 [tcp/lupa] succeeded!
900000+0 records in
900000+0 records out
921600000 bytes transferred in 4.369209 secs (210930626 bytes/sec)
```
Connecting directly to the server:
```
~ dd if=/dev/zero bs=1024 count=900000 | nc -v 127.0.0.1 1313
Connection to 127.0.0.1 port 1313 [tcp/bmc_patroldb] succeeded!
900000+0 records in
900000+0 records out
921600000 bytes transferred in 3.612901 secs (255085873 bytes/sec)
```
Results
```elisp
(* 100 (/ 210930626.0 255085873.0))
=> 82.69004610851186
```
The tcp proxy is 82% the speed of a regular connection.
## Network Namespace Results
Using the proxy:
```
921600000 bytes (922 MB, 879 MiB) copied, 25.4762 s, 36.2 MB/s
```
Connecting directly to the server:
```
921600000 bytes (922 MB, 879 MiB) copied, 5.17278 s, 178 MB/s
```
Results:
```elisp
(* 100 (/ 36.2 178))
=> 20.337078651685395
```
the tcp proxy is 20% the speed of a regular connection.