# Localtunnel
[](https://crates.io/crates/localtunnel)
[](https://crates.io/crates/localtunnel-client)
[](https://crates.io/crates/localtunnel-server)
Localtunnel exposes your localhost endpoint to the world, user cases are:
- API testing
- multiple devices access to single data store
- peer to peer connection, workaround for NAT hole punching.
## Client Usage
Known issue: *the public proxy server is down, please setup your own server.*
Use in CLI:
```shell
cargo install localtunnel
localtunnel client --host https://your-domain.com --subdomain kaichao --port 3000
```
Use as a Rust library:
```shell
cargo add localtunnel-client
```
```Rust
use localtunnel_client::{open_tunnel, broadcast, ClientConfig};
let (notify_shutdown, _) = broadcast::channel(1);
let config = ClientConfig {
server: Some("https://your-domain.com".to_string()),
subdomain: Some("demo".to_string()),
local_host: Some("localhost".to_string()),
local_port: 3000,
shutdown_signal: notify_shutdown.clone(),
max_conn: 10,
credential: None,
};
let result = open_tunnel(config).await?;
// Shutdown the background tasks by sending a signal.
let _ = notify_shutdown.send(());
```
## Server Usage
Use in CLI:
```shell
localtunnel server --domain your-domain.com --port 3000 --proxy-port 3001 --secure
```
Use as a Rust library,
```shell
cargo install localtunnel-server
```
```Rust
use localtunnel_server::{start, ServerConfig};
let config = ServerConfig {
domain: "your-domain.com".to_string(),
api_port: 3000,
secure: true,
max_sockets: 10,
proxy_port: 3001,
require_auth: false,
};
start(config).await?
```
## Sponsor
__Please help me build OSS__ 👉 [GitHub Sponsors](https://github.com/sponsors/kaichaosun)
## Resources
- [localtunnel](https://github.com/localtunnel/localtunnel)