ginuerzh
618cc7fd9c
tokenTransport now delegates CloseIdleConnections to the underlying *http.Transport so http.Client.CloseIdleConnections() works through the wrapper. Three plugin Close() methods updated to unwrap via HTTPClientTransport before calling CloseIdleConnections. RoundTrip now short-circuits when caller already set Authorization, avoiding an unnecessary req.Clone allocation on the pass-through path.
130 lines
2.8 KiB
Go
130 lines
2.8 KiB
Go
package bypass
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import (
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"bytes"
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"context"
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"encoding/json"
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"net/http"
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"github.com/go-gost/core/bypass"
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"github.com/go-gost/core/logger"
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ctxvalue "github.com/go-gost/x/ctx"
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"github.com/go-gost/x/internal/plugin"
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)
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// httpPluginRequest is the JSON payload sent to a remote HTTP bypass service.
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type httpPluginRequest struct {
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Service string `json:"service"`
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Network string `json:"network"`
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Addr string `json:"addr"`
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Client string `json:"client"`
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Host string `json:"host"`
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Path string `json:"path"`
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}
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// httpPluginResponse is the JSON response from a remote HTTP bypass service.
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type httpPluginResponse struct {
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OK bool `json:"ok"`
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}
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// httpPlugin delegates bypass decisions to a remote HTTP service.
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// All error paths return true (fail-open) so that a down plugin
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// does not block traffic.
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type httpPlugin struct {
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url string
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client *http.Client
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header http.Header
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log logger.Logger
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}
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// NewHTTPPlugin creates a Bypass that delegates decisions to an HTTP
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// bypass service at url. The service should accept POST requests with
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// a JSON body and return {"ok": true/false}.
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func NewHTTPPlugin(name string, url string, opts ...plugin.Option) bypass.Bypass {
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var options plugin.Options
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for _, opt := range opts {
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opt(&options)
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}
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return &httpPlugin{
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url: url,
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client: plugin.NewHTTPClient(&options),
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header: options.Header,
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log: logger.Default().WithFields(map[string]any{
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"kind": "bypass",
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"bypass": name,
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}),
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}
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}
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func (p *httpPlugin) Contains(ctx context.Context, network, addr string, opts ...bypass.Option) bool {
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if p.client == nil {
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return true
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}
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log := p.log
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if log == nil {
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log = logger.Default()
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}
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var options bypass.Options
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for _, opt := range opts {
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opt(&options)
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}
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rb := httpPluginRequest{
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Service: options.Service,
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Network: network,
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Addr: addr,
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Client: string(ctxvalue.ClientIDFromContext(ctx)),
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Host: options.Host,
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Path: options.Path,
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}
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v, err := json.Marshal(&rb)
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if err != nil {
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log.Error(err)
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return true
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, p.url, bytes.NewReader(v))
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if err != nil {
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log.Error(err)
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return true
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}
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if p.header != nil {
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req.Header = p.header.Clone()
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := p.client.Do(req)
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if err != nil {
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log.Error(err)
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return true
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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 true
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}
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res := httpPluginResponse{}
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if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
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log.Error(err)
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return true
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}
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return res.OK
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}
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func (p *httpPlugin) Close() error {
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if p.client != nil {
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if tr := plugin.HTTPClientTransport(p.client); tr != nil {
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tr.CloseIdleConnections()
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}
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}
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return nil
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}
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func (p *httpPlugin) IsWhitelist() bool {
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return false
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}
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