rebuild branch

sdk/cliproxy/rtprovider.go

@@ -0,0 +1,51 @@
+package cliproxy
+
+import (
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+
+	coreauth "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/auth"
+)
+
+// defaultRoundTripperProvider returns a per-auth HTTP RoundTripper based on
+// the Auth.ProxyURL value. It caches transports per proxy URL string.
+type defaultRoundTripperProvider struct {
+	mu    sync.RWMutex
+	cache map[string]http.RoundTripper
+}
+
+func newDefaultRoundTripperProvider() *defaultRoundTripperProvider {
+	return &defaultRoundTripperProvider{cache: make(map[string]http.RoundTripper)}
+}
+
+// RoundTripperFor implements coreauth.RoundTripperProvider.
+func (p *defaultRoundTripperProvider) RoundTripperFor(auth *coreauth.Auth) http.RoundTripper {
+	if auth == nil {
+		return nil
+	}
+	proxy := strings.TrimSpace(auth.ProxyURL)
+	if proxy == "" {
+		return nil
+	}
+	p.mu.RLock()
+	rt := p.cache[proxy]
+	p.mu.RUnlock()
+	if rt != nil {
+		return rt
+	}
+	// Build HTTP/HTTPS proxy transport; ignore SOCKS for simplicity here.
+	u, err := url.Parse(proxy)
+	if err != nil {
+		return nil
+	}
+	if u.Scheme != "http" && u.Scheme != "https" {
+		return nil
+	}
+	transport := &http.Transport{Proxy: http.ProxyURL(u)}
+	p.mu.Lock()
+	p.cache[proxy] = transport
+	p.mu.Unlock()
+	return transport
+}