101 lines
2.0 KiB
Go
101 lines
2.0 KiB
Go
package http
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import (
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"bufio"
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"context"
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"encoding/base64"
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"fmt"
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"log"
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"net"
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"net/http"
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"net/url"
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"github.com/go-gost/gost/pkg/components/connector"
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"github.com/go-gost/gost/pkg/logger"
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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.RegiserConnector("http", NewConnector)
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}
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type Connector struct {
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md metadata
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logger logger.Logger
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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 &Connector{
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logger: options.Logger,
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}
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}
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func (c *Connector) Init(md connector.Metadata) (err error) {
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c.md, err = c.parseMetadata(md)
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if 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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func (c *Connector) Connect(ctx context.Context, conn net.Conn, network, address string, opts ...connector.ConnectOption) (net.Conn, error) {
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req := &http.Request{
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Method: http.MethodConnect,
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URL: &url.URL{Host: address},
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Host: address,
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ProtoMajor: 1,
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ProtoMinor: 1,
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Header: make(http.Header),
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}
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if c.md.UserAgent != "" {
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log.Println(c.md.UserAgent)
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req.Header.Set("User-Agent", c.md.UserAgent)
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}
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req.Header.Set("Proxy-Connection", "keep-alive")
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if user := c.md.User; 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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req = req.WithContext(ctx)
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if err := req.Write(conn); err != nil {
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return nil, err
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}
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resp, err := http.ReadResponse(bufio.NewReader(conn), req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("%s", resp.Status)
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}
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return conn, nil
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}
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func (c *Connector) parseMetadata(md connector.Metadata) (m metadata, err error) {
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if md == nil {
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md = connector.Metadata{}
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}
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m.UserAgent = md[userAgent]
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if m.UserAgent == "" {
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m.UserAgent = defaultUserAgent
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}
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if v, ok := md[username]; ok {
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m.User = url.UserPassword(v, md[password])
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}
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return
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}
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