123 lines
2.6 KiB
Go
123 lines
2.6 KiB
Go
package http2
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import (
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"context"
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"net"
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"net/http"
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"sync"
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"time"
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"github.com/go-gost/gost/pkg/dialer"
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http2_util "github.com/go-gost/gost/pkg/internal/http2"
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"github.com/go-gost/gost/pkg/logger"
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md "github.com/go-gost/gost/pkg/metadata"
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"github.com/go-gost/gost/pkg/registry"
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)
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func init() {
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registry.RegisterDialer("http2", NewDialer)
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}
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type http2Dialer struct {
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md metadata
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clients map[string]*http.Client
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clientMutex sync.Mutex
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logger logger.Logger
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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 &http2Dialer{
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clients: make(map[string]*http.Client),
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logger: options.Logger,
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}
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}
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func (d *http2Dialer) 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 nil
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}
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// IsMultiplex implements dialer.Multiplexer interface.
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func (d *http2Dialer) IsMultiplex() bool {
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return true
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}
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func (d *http2Dialer) Dial(ctx context.Context, address string, opts ...dialer.DialOption) (net.Conn, error) {
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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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raddr, err := net.ResolveTCPAddr("tcp", address)
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if err != nil {
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d.logger.Error(err)
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return nil, err
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}
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d.clientMutex.Lock()
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defer d.clientMutex.Unlock()
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client, ok := d.clients[address]
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if !ok {
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client = &http.Client{
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Transport: &http.Transport{
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TLSClientConfig: d.md.tlsConfig,
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DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
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return d.dial(ctx, network, addr, options)
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},
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ForceAttemptHTTP2: true,
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MaxIdleConns: 100,
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IdleConnTimeout: 90 * time.Second,
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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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},
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}
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d.clients[address] = client
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}
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return http2_util.NewClientConn(
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&net.TCPAddr{}, raddr,
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client,
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func() {
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d.clientMutex.Lock()
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defer d.clientMutex.Unlock()
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delete(d.clients, address)
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}), nil
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}
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func (d *http2Dialer) dial(ctx context.Context, network, addr string, opts *dialer.DialOptions) (net.Conn, error) {
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dial := opts.DialFunc
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if dial != nil {
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conn, err := dial(ctx, addr)
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if err != nil {
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d.logger.Error(err)
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} else {
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d.logger.WithFields(map[string]interface{}{
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"src": conn.LocalAddr().String(),
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"dst": addr,
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}).Debug("dial with dial func")
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}
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return conn, err
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}
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var netd net.Dialer
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conn, err := netd.DialContext(ctx, network, addr)
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if err != nil {
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d.logger.Error(err)
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} else {
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d.logger.WithFields(map[string]interface{}{
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"src": conn.LocalAddr().String(),
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"dst": addr,
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}).Debugf("dial direct %s/%s", addr, network)
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}
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return conn, err
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}
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