112 lines
2.4 KiB
Go
112 lines
2.4 KiB
Go
package wt
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import (
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"context"
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"crypto/tls"
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"net"
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"sync"
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"github.com/go-gost/core/dialer"
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md "github.com/go-gost/core/metadata"
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"github.com/go-gost/x/registry"
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"github.com/quic-go/quic-go"
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"github.com/quic-go/quic-go/http3"
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wt "github.com/quic-go/webtransport-go"
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)
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func init() {
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registry.DialerRegistry().Register("wt", NewDialer)
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}
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type wtDialer struct {
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clients map[string]*Client
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clientMutex sync.Mutex
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md metadata
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options dialer.Options
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}
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func NewDialer(opts ...dialer.Option) dialer.Dialer {
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options := dialer.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &wtDialer{
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clients: make(map[string]*Client),
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options: options,
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}
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}
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func (d *wtDialer) Init(md md.Metadata) (err error) {
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if err = d.parseMetadata(md); err != nil {
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return
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}
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return
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}
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// Multiplex implements dialer.Multiplexer interface.
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func (d *wtDialer) Multiplex() bool {
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return true
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}
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func (d *wtDialer) Dial(ctx context.Context, addr string, opts ...dialer.DialOption) (conn net.Conn, err error) {
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d.clientMutex.Lock()
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defer d.clientMutex.Unlock()
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client := d.clients[addr]
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if client == nil {
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var options dialer.DialOptions
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for _, opt := range opts {
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opt(&options)
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}
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host := d.md.host
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if host == "" {
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host = options.Host
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}
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if h, _, _ := net.SplitHostPort(host); h != "" {
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host = h
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}
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client = &Client{
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log: d.options.Logger,
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host: host,
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path: d.md.path,
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header: d.md.header,
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dialer: &wt.Dialer{
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RoundTripper: &http3.RoundTripper{
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TLSClientConfig: d.options.TLSConfig,
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Dial: func(ctx context.Context, adr string, tlsCfg *tls.Config, cfg *quic.Config) (quic.EarlyConnection, error) {
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// d.options.Logger.Infof("dial: %s, %s, %s", addr, adr, host)
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udpAddr, err := net.ResolveUDPAddr("udp", addr)
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if err != nil {
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return nil, err
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}
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udpConn, err := options.NetDialer.Dial(ctx, "udp", "")
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if err != nil {
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return nil, err
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}
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return quic.DialEarly(ctx, udpConn.(net.PacketConn), udpAddr, tlsCfg, cfg)
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},
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QuicConfig: &quic.Config{
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KeepAlivePeriod: d.md.keepAlivePeriod,
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HandshakeIdleTimeout: d.md.handshakeTimeout,
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MaxIdleTimeout: d.md.maxIdleTimeout,
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/*
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Versions: []quic.VersionNumber{
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quic.Version1,
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},
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*/
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MaxIncomingStreams: int64(d.md.maxStreams),
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},
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},
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},
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}
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d.clients[addr] = client
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}
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return client.Dial(ctx, addr)
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}
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