mirror of
https://github.com/logos-messaging/go-multiaddr.git
synced 2026-01-02 13:03:11 +00:00
c90ef4472f
This commit changes the struct to a new Multiaddr interface:
```Go
type Multiaddr interface {
Equal(Multiaddr) bool
Bytes() []byte
String() string
Protocols() []*Protocol
Encapsulate(Multiaddr) Multiaddr
Decapsulate(Multiaddr) Multiaddr
}
```
This means a few things have changed:
- use Multiaddr interface, struct not exported
- Bytes returns a copy of the internal bytes
- Some methods no longer return errors (catch errors in NewMultiaddr)
- String (panics if malformed)
- Protocols (panics if malformed)
- Decapsulate (no-op if not prefix)
- Moved net-specific functions to package
- Multiaddr.DialArgs() -> DialArgs(Multiaddr)
- Multiaddr.IsThinWaist() -> IsThinWaist(Multiaddr)
cc @whyrusleeping @perfmode
go-multiaddr
multiaddr implementation in Go.
Example
Simple
import "github.com/jbenet/go-multiaddr"
m := multiaddr.NewMultiaddr("/ip4/127.0.0.1/udp/1234")
// <Multiaddr /ip4/127.0.0.1/udp/1234>
m.buffer
// <Buffer >
m.String()
// /ip4/127.0.0.1/udp/1234
// construct with Buffer
m = multiaddr.Multiaddr{ Bytes: m.Bytes }
// <Multiaddr /ip4/127.0.0.1/udp/1234>
Protocols
// get the multiaddr protocol description objects
addr.Protocols()
// []*Protocol{
// &Protocol{ Code: 4, Name: 'ip4', Size: 32},
// &Protocol{ Code: 17, Name: 'udp', Size: 16},
// }
Other formats
// handles the stupid url version too
m = multiaddr.NewUrl("udp4://127.0.0.1:1234")
// <Multiaddr /ip4/127.0.0.1/udp/1234>
m.Url(buf)
// udp4://127.0.0.1:1234
En/decapsulate
m.Encapsulate(m.NewMultiaddr("/sctp/5678"))
// <Multiaddr /ip4/127.0.0.1/udp/1234/sctp/5678>
m.Decapsulate(m.NewMultiaddr("/udp")) // up to + inc last occurrence of subaddr
// <Multiaddr /ip4/127.0.0.1>
Tunneling
Multiaddr allows expressing tunnels very nicely.
printer := multiaddr.NewMultiaddr("/ip4/192.168.0.13/tcp/80")
proxy := multiaddr.NewMultiaddr("/ip4/10.20.30.40/tcp/443")
printerOverProxy := proxy.Encapsulate(printer)
// <Multiaddr /ip4/10.20.30.40/tcp/443/ip4/192.168.0.13/tcp/80>
proxyAgain := printerOverProxy.Decapsulate(multiaddr.NewMultiaddr("/ip4"))
// <Multiaddr /ip4/10.20.30.40/tcp/443>