Port mapping with UPnP and NAT-PMP
$ npm i @achingbrain/nat-port-mapper
import { upnpNat } from '@achingbrain/nat-port-mapper'
const client = await upnpNat({
// all fields are optional
ttl: number // how long mappings should live for in seconds - min 20 minutes, default 2 hours
description: string // default description to pass to the router for a mapped port
gateway: string // override the router address, will be auto-detected if not set
keepAlive: boolean // if true, refresh the mapping ten minutes before the ttl is reached, default true
})
// Map public port 1000 to private port 1000 with TCP
await client.map({
localPort: 1000,
protocol: 'TCP'
})
// Map public port 2000 to private port 3000 with UDP
await client.map({
publicPort: 2000,
localPort: 3000,
protocol: 'UDP'
})
// Unmap port public and private port 1000 with TCP
await client.unmap({
localPort: 1000,
protocol: 'TCP'
})
// Get external IP
const externalIp = await client.externalIp()
console.log('External IP:', ip)
// Unmap all mapped ports
client.close()
Based on alxhotel/nat-api
- https://miniupnp.free.fr/nat-pmp.html
- https://wikipedia.org/wiki/NAT_Port_Mapping_Protocol
- https://tools.ietf.org/html/draft-cheshire-nat-pmp-03
Licensed under either of
- Apache 2.0, (LICENSE-APACHE / https://www.apache.org/licenses/LICENSE-2.0)
- MIT (LICENSE-MIT / https://opensource.org/licenses/MIT)
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.