mirror of
https://github.com/netbirdio/netbird.git
synced 2024-12-15 11:21:04 +01:00
79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
package ws
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"net/http"
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"net/url"
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"strings"
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log "github.com/sirupsen/logrus"
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"nhooyr.io/websocket"
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"github.com/netbirdio/netbird/relay/server/listener/ws"
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nbnet "github.com/netbirdio/netbird/util/net"
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)
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type Dialer struct {
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}
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func (d Dialer) Protocol() string {
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return "WS"
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}
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func (d Dialer) Dial(ctx context.Context, address string) (net.Conn, error) {
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wsURL, err := prepareURL(address)
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if err != nil {
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return nil, err
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}
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opts := &websocket.DialOptions{
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HTTPClient: httpClientNbDialer(),
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}
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parsedURL, err := url.Parse(wsURL)
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if err != nil {
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return nil, err
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}
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parsedURL.Path = ws.URLPath
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wsConn, resp, err := websocket.Dial(ctx, parsedURL.String(), opts)
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if err != nil {
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if errors.Is(err, context.Canceled) {
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return nil, err
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}
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log.Errorf("failed to dial to Relay server '%s': %s", wsURL, err)
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return nil, err
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}
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if resp.Body != nil {
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_ = resp.Body.Close()
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}
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conn := NewConn(wsConn, address)
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return conn, nil
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}
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func prepareURL(address string) (string, error) {
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if !strings.HasPrefix(address, "rel:") && !strings.HasPrefix(address, "rels:") {
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return "", fmt.Errorf("unsupported scheme: %s", address)
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}
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return strings.Replace(address, "rel", "ws", 1), nil
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}
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func httpClientNbDialer() *http.Client {
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customDialer := nbnet.NewDialer()
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customTransport := &http.Transport{
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DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
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return customDialer.DialContext(ctx, network, addr)
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},
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}
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return &http.Client{
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Transport: customTransport,
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}
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}
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