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addrs.go
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/
addrs.go
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package websocket
import (
"fmt"
"net"
"net/url"
ma "github.com/multiformats/go-multiaddr"
manet "github.com/multiformats/go-multiaddr-net"
)
// Addr is an implementation of net.Addr for WebSocket.
type Addr struct {
*url.URL
}
var _ net.Addr = (*Addr)(nil)
// Network returns the network type for a WebSocket, "websocket".
func (addr *Addr) Network() string {
return "websocket"
}
// NewAddr creates a new Addr using the given host string
func NewAddr(host string) *Addr {
return &Addr{
URL: &url.URL{
Host: host,
},
}
}
func ConvertWebsocketMultiaddrToNetAddr(maddr ma.Multiaddr) (net.Addr, error) {
_, host, err := manet.DialArgs(maddr)
if err != nil {
return nil, err
}
return NewAddr(host), nil
}
func ParseWebsocketNetAddr(a net.Addr) (ma.Multiaddr, error) {
wsa, ok := a.(*Addr)
if !ok {
return nil, fmt.Errorf("not a websocket address")
}
tcpaddr, err := net.ResolveTCPAddr("tcp", wsa.Host)
if err != nil {
return nil, err
}
tcpma, err := manet.FromNetAddr(tcpaddr)
if err != nil {
return nil, err
}
wsma, err := ma.NewMultiaddr("/ws")
if err != nil {
return nil, err
}
return tcpma.Encapsulate(wsma), nil
}
func parseMultiaddr(a ma.Multiaddr) (string, error) {
_, host, err := manet.DialArgs(a)
if err != nil {
return "", err
}
return "ws://" + host, nil
}