122 lines
2.6 KiB
Go
122 lines
2.6 KiB
Go
package http2
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import (
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"context"
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"encoding/base64"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"net/http/httputil"
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"net/url"
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"time"
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"github.com/go-gost/core/connector"
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"github.com/go-gost/core/logger"
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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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)
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func init() {
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registry.ConnectorRegistry().Register("http2", NewConnector)
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}
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type http2Connector struct {
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md metadata
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options connector.Options
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}
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func NewConnector(opts ...connector.Option) connector.Connector {
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options := connector.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &http2Connector{
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options: options,
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}
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}
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func (c *http2Connector) Init(md md.Metadata) (err error) {
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return c.parseMetadata(md)
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}
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func (c *http2Connector) Connect(ctx context.Context, conn net.Conn, network, address string, opts ...connector.ConnectOption) (net.Conn, error) {
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log := c.options.Logger.WithFields(map[string]any{
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"local": conn.LocalAddr().String(),
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"remote": conn.RemoteAddr().String(),
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"network": network,
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"address": address,
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})
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log.Debugf("connect %s/%s", address, network)
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v, _ := conn.(md.Metadatable)
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if v == nil {
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err := errors.New("http2: wrong connection type")
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log.Error(err)
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return nil, err
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}
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pr, pw := io.Pipe()
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req := &http.Request{
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Method: http.MethodConnect,
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URL: &url.URL{Scheme: "https", Host: conn.RemoteAddr().String()},
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Host: address,
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ProtoMajor: 2,
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ProtoMinor: 0,
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Header: c.md.header,
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Body: pr,
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// ContentLength: -1,
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}
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if req.Header == nil {
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req.Header = make(http.Header)
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}
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if user := c.options.Auth; user != nil {
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u := user.Username()
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p, _ := user.Password()
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req.Header.Set("Proxy-Authorization",
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"Basic "+base64.StdEncoding.EncodeToString([]byte(u+":"+p)))
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}
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if log.IsLevelEnabled(logger.TraceLevel) {
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dump, _ := httputil.DumpRequest(req, false)
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log.Trace(string(dump))
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}
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if c.md.connectTimeout > 0 {
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conn.SetDeadline(time.Now().Add(c.md.connectTimeout))
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defer conn.SetDeadline(time.Time{})
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}
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client := v.GetMetadata().Get("client").(*http.Client)
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resp, err := client.Do(req)
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if err != nil {
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log.Error(err)
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conn.Close()
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return nil, err
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}
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if log.IsLevelEnabled(logger.TraceLevel) {
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dump, _ := httputil.DumpResponse(resp, false)
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log.Trace(string(dump))
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}
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if resp.StatusCode != http.StatusOK {
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resp.Body.Close()
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err = fmt.Errorf("%s", resp.Status)
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log.Error(err)
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return nil, err
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}
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hc := &http2Conn{
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r: resp.Body,
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w: pw,
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localAddr: conn.RemoteAddr(),
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}
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hc.remoteAddr, _ = net.ResolveTCPAddr(network, address)
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return hc, nil
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}
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