refactoring: moved reverse_proxy to separate package to avoid import cycle

internal/net/http/middleware/middleware.go

@@ -9,14 +9,15 @@ import (
 	E "github.com/yusing/go-proxy/internal/error"
 	"github.com/yusing/go-proxy/internal/logging"
 	gphttp "github.com/yusing/go-proxy/internal/net/http"
+	"github.com/yusing/go-proxy/internal/net/http/reverseproxy"
 	"github.com/yusing/go-proxy/internal/utils"
 )
 
 type (
 	Error = E.Error
 
-	ReverseProxy = gphttp.ReverseProxy
-	ProxyRequest = gphttp.ProxyRequest
+	ReverseProxy = reverseproxy.ReverseProxy
+	ProxyRequest = reverseproxy.ProxyRequest
 
 	ImplNewFunc = func() any
 	OptionsRaw  = map[string]any

internal/net/http/middleware/set_upstream_headers.go

@@ -4,6 +4,7 @@ import (
 	"net/http"
 
 	gphttp "github.com/yusing/go-proxy/internal/net/http"
+	"github.com/yusing/go-proxy/internal/net/http/reverseproxy"
 )
 
 // internal use only.
@@ -13,7 +14,7 @@ type setUpstreamHeaders struct {
 
 var suh = NewMiddleware[setUpstreamHeaders]()
 
-func newSetUpstreamHeaders(rp *gphttp.ReverseProxy) *Middleware {
+func newSetUpstreamHeaders(rp *reverseproxy.ReverseProxy) *Middleware {
 	m, err := suh.New(OptionsRaw{
 		"name":   rp.TargetName,
 		"scheme": rp.TargetURL.Scheme,

internal/net/http/middleware/test_utils.go

@@ -10,7 +10,7 @@ import (
 
 	"github.com/yusing/go-proxy/internal/common"
 	E "github.com/yusing/go-proxy/internal/error"
-	gphttp "github.com/yusing/go-proxy/internal/net/http"
+	"github.com/yusing/go-proxy/internal/net/http/reverseproxy"
 	"github.com/yusing/go-proxy/internal/net/types"
 )
 
@@ -139,7 +139,7 @@ func newMiddlewareTest(middleware *Middleware, args *testArgs) (*TestResult, E.E
 		rr.parent = http.DefaultTransport
 	}
 
-	rp := gphttp.NewReverseProxy(middleware.name, args.upstreamURL, rr)
+	rp := reverseproxy.NewReverseProxy(middleware.name, args.upstreamURL, rr)
 
 	mid, setOptErr := middleware.New(args.middlewareOpt)
 	if setOptErr != nil {