diff --git a/README.md b/README.md
index b00fe17..a4cd342 100644
--- a/README.md
+++ b/README.md
@@ -175,6 +175,33 @@ application.OnShutdown(logger.Close)
 `X-Forwarded-For`，默认只记录 socket 对端地址。数据库连接仍由
 `database.ConfigFromEnv` 从 `GO_OMNI_DB_*` 加载。
 
+网络层也由同一份配置选择，Handler / Service / Repository 不需要导入具体适配器：
+
+| 配置 | 默认值 / 用途 |
+| --- | --- |
+| `GO_OMNI_TRANSPORT` | `nethttp`；可选 `native`、`http2` |
+| `GO_OMNI_TLS_CERT_FILE` | TLS 证书 PEM 文件路径 |
+| `GO_OMNI_TLS_KEY_FILE` | TLS 私钥 PEM 文件路径，必须与证书一起配置 |
+| `GO_OMNI_SHUTDOWN_TIMEOUT` | `10s`，三种适配器共用的请求排空时间 |
+
+例如运行自研 HTTP/1.1，或显式试用独立 HTTP/2 适配器：
+
+```sh
+GO_OMNI_TRANSPORT=native go run ./examples/reference
+GO_OMNI_TRANSPORT=http2 GO_OMNI_HTTP_ADDR=127.0.0.1:8443 \
+  GO_OMNI_TLS_CERT_FILE=./server.crt GO_OMNI_TLS_KEY_FILE=./server.key \
+  go run ./examples/reference
+```
+
+`http2` 必须配置 TLS；native TLS 只协商 `http/1.1`，nethttp TLS 支持标准库的 HTTP/1.1 和 HTTP/2。
+未知适配器、缺少配对证书、无法加载证书时，`Run` / `RunContext` 在监听前返回错误并执行资源清理，不会退回其他协议。
+HTTP/2 仍为实验适配器，尚未合并到 native 多协议监听器。
+
+代码配置可写成 `omni.New(omni.WithTransport(omni.TransportNative), omni.WithTLS(certFile, keyFile))`。
+`ServeContext(ctx, listener)` 使用相同配置并接管已有 listener；失败或退出时也会关闭它。
+`RunWith(ctx, runner)` 保留自定义网络层入口，由 runner 自己管理 TLS 和网络参数；连接/请求上限等适配器专属选项仍通过这个入口设置。
+`NewServer` 仅创建标准库明文服务器，配置选择应用于 `Run`、`RunContext` 和 `ServeContext`。
+
 `App` 同时实现标准 `http.Handler`。`Run` 监听 `SIGINT` / `SIGTERM`；`RunContext` 则由调用方的 context 控制退出，生成项目已使用 `signal.NotifyContext` 接好信号。
 退出时先停止接收新请求，等待活跃请求完成，再执行资源清理。超过 `ShutdownTimeout` 时强制关闭连接、取消请求 context，并返回超时错误。业务代码应响应 context 取消；框架无法强制结束忽略取消的业务 goroutine。数据库连接池由 `database.Open` 创建，在服务退出时调用 `Close`。
 
diff --git a/ROADMAP.md b/ROADMAP.md
index 1523f14..d135f5a 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -58,7 +58,9 @@
 - 已补连接级窗口耗尽时的暂停、同连接 204/跨连接隔离、WINDOW_UPDATE 恢复和连接复用；已补零窗口写阻塞在关闭超时后的解除阻塞、请求取消与回收。Linux amd64 的 HTTP/2 全包 race、vet、build 已通过，见 [边界回归报告](performance/http2FlowControlLinux.json)。
 - 新增 HTTP/2 零 stream 窗口时的慢响应隔离、WINDOW_UPDATE 恢复、RST_STREAM 取消与请求槽位回收测试；补充 TLS 半开握手占满连接上限时的及时拒绝、超时回收及正常请求恢复测试。
 - 已完成 Nginx 1.30.5 → HTTP/2 的 TLS 回源联调：普通与 race 模式各 3 轮，共 18 个子场景通过；覆盖两段证书校验、32 次 POST 复用一条回源连接、不可信 CA/主机名拒绝、504 超时、客户端取消、GOAWAY 后旧 POST 完成及 20 个新 POST 转入新实例，无重复业务执行。见 [验收说明与报告](transport/http2/PROXY.md)。
-- `scripts/verifyHTTP2Proxy.py` 顺序运行受限编译容器和禁用外部网络的测试容器；总时限、SIGTERM、SIGHUP 清理已在 Linux 实测，原有 7 个业务容器仍运行。HTTP/2 下一步是统一启动配置、native 多协议接入回归与业务试用；当前结果不覆盖 Nginx master/worker 重载或 Cloudflare 实网部署。
+- `scripts/verifyHTTP2Proxy.py` 顺序运行受限编译容器和禁用外部网络的测试容器；总时限、SIGTERM、SIGHUP 清理已在 Linux 实测，原有 7 个业务容器仍运行。当前结果不覆盖 Nginx master/worker 重载或 Cloudflare 实网部署。
+- 已接入 `omni.New` 的统一 transport / TLS / shutdownTimeout 配置：默认 nethttp，可显式选择 native 或实验 HTTP/2；证书在监听前加载，HTTP/2 配置必须启用 TLS。`RunWith` 继续支持自定义网络层，业务不依赖具体适配器。
+- 参考业务已增加五种真实 TCP/TLS 组合的 CRUD、认证权限、错误响应、requestId 日志与协议协商测试；三种适配器共用排空和超时退出测试。修复 native 退出时过早取消在途请求，并使关闭超时错误返回调用方。下一步仍为业务环境试用、native 多协议监听器设计与接入回归，HTTP/2 保持实验状态。
 - 已用 16 个并发 worker 完成 3,200 次建连/断连 race 验收；MaxConnections 满载拒绝、槽位释放和 TLS 连接上限均已覆盖。
 - 新增 `scripts/verifyLinux.py`，固定在 Go 1.25 Linux 容器内运行 race、vet、build 和可选 TLS/非 TLS perfcheck；perfcheck 记录堆、goroutine、连接和 Linux 文件描述符。
 - Linux/arm64 已完成 30 秒、128 并发、512 空闲连接的 TLS 与非 TLS 持续回归，报告见 `performance/linuxSoak.json` 和 `performance/linuxSoakTLS.json`，均为 0 错误且连接、goroutine、FD 回收正常。
diff --git a/app/app.go b/app/app.go
index 04b6881..f3e99d4 100644
--- a/app/app.go
+++ b/app/app.go
@@ -31,7 +31,7 @@ type App struct {
 }
 
 // Runner is the small lifecycle boundary used by an HTTP server
-// implementation. The default App.RunContext uses net/http; a custom runner
+// implementation. App.RunContext selects a configured built-in server; a custom runner
 // can own the listener, protocol parser and connection lifecycle.
 type Runner interface {
 	Run(context.Context, http.Handler, string) error
@@ -133,7 +133,8 @@ func (a *App) Run(address ...string) error {
 	return a.RunContext(ctx, address...)
 }
 
-// NewServer creates a standard HTTP server around the application.
+// NewServer creates a plain standard HTTP server around the application.
+// Use RunContext or ServeContext to apply the configured transport and TLS.
 func (a *App) NewServer(address string) *http.Server {
 	if address == "" {
 		address = a.config.Address
@@ -152,23 +153,21 @@ func (a *App) RunContext(ctx context.Context, address ...string) error {
 	if ctx.Err() != nil {
 		return a.Close()
 	}
-	listenOn := a.config.Address
-	if listenOn == "" {
-		listenOn = ":8080"
-	}
-	if len(address) > 0 && address[0] != "" {
-		listenOn = address[0]
-	}
-	server := a.NewServer(listenOn)
-	listener, err := net.Listen("tcp", server.Addr)
+	serve, err := a.prepareTransport()
 	if err != nil {
 		return errors.Join(err, a.Close())
 	}
-	return a.serveContext(ctx, server, listener)
+	listener, err := net.Listen("tcp", a.listenAddress(address...))
+	if err != nil {
+		return errors.Join(err, a.Close())
+	}
+	defer listener.Close()
+	return errors.Join(serve(ctx, listener), a.Close())
 }
 
 // RunWith starts a custom server runner while keeping App-owned cleanup in the
-// same lifecycle. The runner receives the transport-neutral App handler.
+// same lifecycle. The runner receives the transport-neutral App handler and
+// owns transport/TLS settings; built-in transport selection is bypassed.
 func (a *App) RunWith(ctx context.Context, runner Runner, address ...string) error {
 	if runner == nil {
 		return errors.Join(errors.New("go-omni: nil runner"), a.Close())
@@ -176,6 +175,13 @@ func (a *App) RunWith(ctx context.Context, runner Runner, address ...string) err
 	if ctx == nil {
 		ctx = context.Background()
 	}
+	if ctx.Err() != nil {
+		return a.Close()
+	}
+	return errors.Join(runner.Run(ctx, a, a.listenAddress(address...)), a.Close())
+}
+
+func (a *App) listenAddress(address ...string) string {
 	listenOn := a.config.Address
 	if listenOn == "" {
 		listenOn = ":8080"
@@ -183,12 +189,18 @@ func (a *App) RunWith(ctx context.Context, runner Runner, address ...string) err
 	if len(address) > 0 && address[0] != "" {
 		listenOn = address[0]
 	}
-	return errors.Join(runner.Run(ctx, a, listenOn), a.Close())
+	return listenOn
 }
 
 func (a *App) serveContext(ctx context.Context, server *http.Server, listener net.Listener) error {
 	serveErr := make(chan error, 1)
-	go func() { serveErr <- server.Serve(listener) }()
+	go func() {
+		if server.TLSConfig != nil {
+			serveErr <- server.ServeTLS(listener, "", "")
+		} else {
+			serveErr <- server.Serve(listener)
+		}
+	}()
 
 	select {
 	case err := <-serveErr:
diff --git a/app/transport.go b/app/transport.go
new file mode 100644
index 0000000..f6e6a64
--- /dev/null
+++ b/app/transport.go
@@ -0,0 +1,79 @@
+package app
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+	"time"
+
+	"git.yuntuo.hk/k2safe/go-omni/config"
+	h2transport "git.yuntuo.hk/k2safe/go-omni/transport/http2"
+	"git.yuntuo.hk/k2safe/go-omni/transport/native"
+)
+
+// ServeContext serves a caller-created listener using the configured transport
+// and TLS. App takes ownership of the listener, including on startup failure,
+// and runs resource cleanup after the server has stopped.
+func (a *App) ServeContext(ctx context.Context, listener net.Listener) error {
+	if listener == nil {
+		return errors.Join(errors.New("go-omni: nil listener"), a.Close())
+	}
+	defer listener.Close()
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	if ctx.Err() != nil {
+		_ = listener.Close()
+		return a.Close()
+	}
+	serve, err := a.prepareTransport()
+	if err != nil {
+		_ = listener.Close()
+		return errors.Join(err, a.Close())
+	}
+	return errors.Join(serve(ctx, listener), a.Close())
+}
+
+func (a *App) prepareTransport() (func(context.Context, net.Listener) error, error) {
+	if err := a.config.ValidateTransport(); err != nil {
+		return nil, err
+	}
+	shutdownTimeout := a.config.ShutdownTimeout
+	if shutdownTimeout <= 0 {
+		shutdownTimeout = 10 * time.Second
+	}
+	var tlsConfig *tls.Config
+	if strings.TrimSpace(a.config.TLS.CertFile) != "" {
+		certificate, err := tls.LoadX509KeyPair(a.config.TLS.CertFile, a.config.TLS.KeyFile)
+		if err != nil {
+			return nil, fmt.Errorf("go-omni: load TLS certificate: %w", err)
+		}
+		tlsConfig = &tls.Config{Certificates: []tls.Certificate{certificate}, MinVersion: tls.VersionTLS12}
+	}
+	switch a.config.Transport {
+	case config.TransportNative:
+		server := native.New(a)
+		server.ShutdownTimeout = shutdownTimeout
+		if tlsConfig != nil {
+			return func(ctx context.Context, listener net.Listener) error {
+				return server.ServeTLS(ctx, listener, tlsConfig)
+			}, nil
+		}
+		return server.Serve, nil
+	case config.TransportHTTP2:
+		server := h2transport.New(a)
+		server.ShutdownTimeout = shutdownTimeout
+		return func(ctx context.Context, listener net.Listener) error {
+			return server.ServeTLS(ctx, listener, tlsConfig)
+		}, nil
+	default:
+		server := a.NewServer("")
+		server.TLSConfig = tlsConfig
+		return func(ctx context.Context, listener net.Listener) error {
+			return a.serveContext(ctx, server, listener)
+		}, nil
+	}
+}
diff --git a/app/transport_test.go b/app/transport_test.go
new file mode 100644
index 0000000..c4d53fd
--- /dev/null
+++ b/app/transport_test.go
@@ -0,0 +1,266 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"git.yuntuo.hk/k2safe/go-omni/config"
+	"git.yuntuo.hk/k2safe/go-omni/httpx"
+	"git.yuntuo.hk/k2safe/go-omni/internal/testutil"
+)
+
+func TestConfiguredTransportLifecycle(t *testing.T) {
+	for _, transport := range []string{config.TransportNetHTTP, config.TransportNative, config.TransportHTTP2} {
+		for _, timeout := range []bool{false, true} {
+			name := transport + "/drain"
+			if timeout {
+				name = transport + "/timeout"
+			}
+			t.Run(name, func(t *testing.T) {
+				cert, key, tlsClient := testutil.CertificateFiles(t)
+				limit := 3 * time.Second
+				if timeout {
+					limit = 80 * time.Millisecond
+				}
+				application := New(config.WithTransport(transport), config.WithTLS(cert, key), config.WithShutdownTimeout(limit))
+				started, release, canceled := make(chan struct{}), make(chan struct{}), make(chan struct{})
+				var once sync.Once
+				unblock := func() { once.Do(func() { close(release) }) }
+				defer unblock()
+				var cleaned atomic.Int32
+				application.OnShutdown(func() error { cleaned.Add(1); return nil })
+				application.GET("/slow", func(ctx *httpx.Context) error {
+					close(started)
+					select {
+					case <-ctx.Context().Done():
+						close(canceled)
+						return ctx.Context().Err()
+					case <-release:
+						return ctx.OK("finished")
+					}
+				})
+				listener, err := net.Listen("tcp", "127.0.0.1:0")
+				if err != nil {
+					t.Fatal(err)
+				}
+				wrapped := &closingListener{Listener: listener, closed: make(chan struct{})}
+				ctx, cancel := context.WithCancel(context.Background())
+				defer cancel()
+				defer listener.Close()
+				done := make(chan error, 1)
+				go func() { done <- application.ServeContext(ctx, wrapped) }()
+				client := &http.Client{Timeout: 5 * time.Second, Transport: &http.Transport{TLSClientConfig: tlsClient, ForceAttemptHTTP2: true}}
+				defer client.CloseIdleConnections()
+				requestDone := make(chan error, 1)
+				go func() {
+					response, err := client.Get("https://" + listener.Addr().String() + "/slow")
+					if err == nil {
+						defer response.Body.Close()
+						body, readErr := io.ReadAll(response.Body)
+						err = readErr
+						if response.StatusCode != 200 || !strings.Contains(string(body), "finished") {
+							err = errors.New("drained response was lost")
+						}
+					}
+					requestDone <- err
+				}()
+				await(t, started)
+				began := time.Now()
+				cancel()
+				await(t, wrapped.closed)
+				if !timeout {
+					select {
+					case <-canceled:
+						t.Fatal("active request canceled before drain")
+					default:
+					}
+					if cleaned.Load() != 0 {
+						t.Fatal("cleanup preceded active request")
+					}
+					unblock()
+				}
+				select {
+				case err := <-done:
+					if timeout {
+						if !errors.Is(err, context.DeadlineExceeded) || time.Since(began) < limit {
+							t.Fatalf("timeout ignored: %v after %v", err, time.Since(began))
+						}
+						await(t, canceled)
+					} else if err != nil {
+						t.Fatal(err)
+					}
+				case <-time.After(5 * time.Second):
+					t.Fatal("server failed to stop")
+				}
+				select {
+				case err := <-requestDone:
+					if !timeout && err != nil {
+						t.Fatal(err)
+					}
+				case <-time.After(5 * time.Second):
+					t.Fatal("client failed to finish")
+				}
+				_ = application.Close()
+				if cleaned.Load() != 1 {
+					t.Fatalf("cleanup count %d", cleaned.Load())
+				}
+			})
+		}
+	}
+}
+
+func TestConfiguredStartupFailureClosesResources(t *testing.T) {
+	occupied, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer occupied.Close()
+	for _, test := range []struct {
+		name, errorText string
+		options         []config.Option
+	}{
+		{"unknown", "transport", []config.Option{config.WithTransport("unknown")}},
+		{"http2WithoutTLS", "tls", []config.Option{config.WithTransport("http2")}},
+		{"partialTLS", "tls", []config.Option{config.WithTLS("missing.crt", "")}},
+		{"nethttpCertificate", "load TLS certificate", []config.Option{config.WithTLS("missing.crt", "missing.key")}},
+		{"nativeCertificate", "load TLS certificate", []config.Option{config.WithTransport("native"), config.WithTLS("missing.crt", "missing.key")}},
+		{"http2Certificate", "load TLS certificate", []config.Option{config.WithTransport("http2"), config.WithTLS("missing.crt", "missing.key")}},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			application := New(test.options...)
+			cleanupError := errors.New("cleanup failure")
+			count := 0
+			application.OnShutdown(func() error { count++; return cleanupError })
+			// The occupied address must not mask configuration/certificate errors.
+			err := application.RunContext(context.Background(), occupied.Addr().String())
+			if err == nil || !strings.Contains(err.Error(), test.errorText) || !errors.Is(err, cleanupError) {
+				t.Fatalf("startup: %v", err)
+			}
+			_ = application.Close()
+			if count != 1 {
+				t.Fatalf("cleanup count %d", count)
+			}
+		})
+	}
+	for _, canceled := range []bool{false, true} {
+		application := New(config.WithTransport("unknown"))
+		listener, err := net.Listen("tcp", "127.0.0.1:0")
+		if err != nil {
+			t.Fatal(err)
+		}
+		ctx, cancel := context.WithCancel(context.Background())
+		if canceled {
+			cancel()
+		}
+		err = application.ServeContext(ctx, listener)
+		cancel()
+		if canceled && err != nil {
+			t.Fatal(err)
+		}
+		if !canceled && err == nil {
+			t.Fatal("invalid transport accepted")
+		}
+		if _, err := listener.Accept(); !errors.Is(err, net.ErrClosed) {
+			t.Fatalf("listener leaked: %v", err)
+		}
+	}
+}
+
+func TestRunContextConfiguredTLS(t *testing.T) {
+	for _, transport := range []string{config.TransportNetHTTP, config.TransportNative, config.TransportHTTP2} {
+		t.Run(transport, func(t *testing.T) {
+			cert, key, tlsClient := testutil.CertificateFiles(t)
+			reserved, err := net.Listen("tcp", "127.0.0.1:0")
+			if err != nil {
+				t.Fatal(err)
+			}
+			address := reserved.Addr().String()
+			reserved.Close()
+			settings := config.Default()
+			settings.Address, settings.Transport = address, transport
+			settings.TLS = config.TLSConfig{CertFile: cert, KeyFile: key}
+			application := New(config.WithConfig(settings))
+			application.GET("/health", func(ctx *httpx.Context) error { return ctx.OK("ok") })
+			ctx, cancel := context.WithCancel(context.Background())
+			done := make(chan error, 1)
+			go func() { done <- application.RunContext(ctx) }()
+			defer func() {
+				cancel()
+				select {
+				case err := <-done:
+					if err != nil {
+						t.Error(err)
+					}
+				case <-time.After(5 * time.Second):
+					t.Error("RunContext failed to stop")
+				}
+			}()
+			client := &http.Client{Timeout: time.Second, Transport: &http.Transport{TLSClientConfig: tlsClient, ForceAttemptHTTP2: true}}
+			defer client.CloseIdleConnections()
+			deadline := time.Now().Add(3 * time.Second)
+			for {
+				response, err := client.Get("https://" + address + "/health")
+				if err == nil {
+					body, readErr := io.ReadAll(response.Body)
+					response.Body.Close()
+					if readErr != nil || response.StatusCode != 200 || !strings.Contains(string(body), `"data":"ok"`) {
+						t.Fatalf("response %s: %v", body, readErr)
+					}
+					want := "h2"
+					if transport == config.TransportNative {
+						want = "http/1.1"
+					}
+					if response.TLS.NegotiatedProtocol != want || len(response.TLS.VerifiedChains) == 0 {
+						t.Fatalf("TLS negotiation: %+v", response.TLS)
+					}
+					break
+				}
+				if time.Now().After(deadline) {
+					t.Fatal(err)
+				}
+				time.Sleep(10 * time.Millisecond)
+			}
+		})
+	}
+}
+
+type runnerFunc func(context.Context, http.Handler, string) error
+
+func (f runnerFunc) Run(ctx context.Context, handler http.Handler, address string) error {
+	return f(ctx, handler, address)
+}
+
+func TestRunWithRemainsIndependentOfBuiltInTransport(t *testing.T) {
+	for _, canceled := range []bool{false, true} {
+		application := New(config.WithTransport("custom"), config.WithTLS("missing", "missing"))
+		ctx, cancel := context.WithCancel(context.Background())
+		if canceled {
+			cancel()
+		}
+		calls, cleanups := 0, 0
+		application.OnShutdown(func() error { cleanups++; return nil })
+		err := application.RunWith(ctx, runnerFunc(func(_ context.Context, handler http.Handler, address string) error {
+			calls++
+			if handler != application || address != "127.0.0.1:1234" {
+				t.Fatal("custom runner arguments changed")
+			}
+			return nil
+		}), "127.0.0.1:1234")
+		cancel()
+		wantCalls := 1
+		if canceled {
+			wantCalls = 0
+		}
+		if err != nil || calls != wantCalls || cleanups != 1 {
+			t.Fatalf("RunWith: %v calls=%d cleanups=%d", err, calls, cleanups)
+		}
+	}
+}
diff --git a/cmd/go-omni/scaffold/templates/README.md.tmpl b/cmd/go-omni/scaffold/templates/README.md.tmpl
index a6fd672..f4e6a68 100644
--- a/cmd/go-omni/scaffold/templates/README.md.tmpl
+++ b/cmd/go-omni/scaffold/templates/README.md.tmpl
@@ -47,6 +47,11 @@ go build -o server ./cmd/server
 ```
 
 `GO_OMNI_SHUTDOWN_TIMEOUT` 控制等待请求完成的时间，默认 `10s`。
+
+使用支持统一网络配置的框架版本时，设置 `GO_OMNI_TRANSPORT=native` 即可切换为自研 HTTP/1.1；
+默认 `nethttp`。`GO_OMNI_TLS_CERT_FILE` 和 `GO_OMNI_TLS_KEY_FILE` 配对启用 HTTPS。
+实验版 HTTP/2 使用 `GO_OMNI_TRANSPORT=http2`，必须同时配置 TLS 证书和私钥。
+业务 Handler / Service / Repository 不需要修改；三种适配器共用上述退出等待时间。
 {{if eq .Database "mysql"}}
 `/health/ready` 已注册数据库探针：连接失败返回 `503`，数据库恢复后重新返回 `200`。
 `/health/live` 始终只检查服务存活。`GO_OMNI_DB_PING_TIMEOUT` 限制初始化检查和数据库探针的等待时间。
diff --git a/config/config.go b/config/config.go
index 78fb187..cb66d3f 100644
--- a/config/config.go
+++ b/config/config.go
@@ -10,19 +10,34 @@ import (
 
 const defaultRequestIDHeader = "X-Request-ID"
 
+const (
+	TransportNetHTTP = "nethttp"
+	TransportNative  = "native"
+	TransportHTTP2   = "http2"
+)
+
+// TLSConfig enables HTTPS when both certificate paths are provided.
+type TLSConfig struct {
+	CertFile string `json:"certFile"`
+	KeyFile  string `json:"keyFile"`
+}
+
 // Config controls the default runtime behavior of an App.
 type Config struct {
-	Address         string
-	RequestIDHeader string
-	EnableLogger    bool
-	TrustedProxies  []string
-	ShutdownTimeout time.Duration
-	Log             logx.Config
+	Address         string        `json:"address"`
+	Transport       string        `json:"transport"`
+	TLS             TLSConfig     `json:"tls"`
+	RequestIDHeader string        `json:"requestIdHeader"`
+	EnableLogger    bool          `json:"enableLogger"`
+	TrustedProxies  []string      `json:"trustedProxies"`
+	ShutdownTimeout time.Duration `json:"shutdownTimeout"`
+	Log             logx.Config   `json:"log"`
 }
 
 func Default() Config {
 	return Config{
 		Address:         ":8080",
+		Transport:       TransportNetHTTP,
 		RequestIDHeader: defaultRequestIDHeader,
 		ShutdownTimeout: 10 * time.Second,
 		Log:             logx.Default(),
@@ -43,6 +58,24 @@ func (c Config) Validate() error {
 	if _, err := httpx.NewClientIPResolver(c.TrustedProxies...); err != nil {
 		return &ConfigError{Field: "trusted_proxies", Message: err.Error()}
 	}
+	return c.ValidateTransport()
+}
+
+// ValidateTransport checks built-in transport selection without opening files
+// or sockets. Empty Transport preserves the standard net/http default.
+func (c Config) ValidateTransport() error {
+	switch c.Transport {
+	case "", TransportNetHTTP, TransportNative, TransportHTTP2:
+	default:
+		return &ConfigError{Field: "transport", Message: "must be nethttp, native or http2"}
+	}
+	cert, key := strings.TrimSpace(c.TLS.CertFile), strings.TrimSpace(c.TLS.KeyFile)
+	if (cert == "") != (key == "") {
+		return &ConfigError{Field: "tls", Message: "requires both certFile and keyFile"}
+	}
+	if c.Transport == TransportHTTP2 && cert == "" {
+		return &ConfigError{Field: "tls", Message: "is required for the experimental http2 transport"}
+	}
 	return nil
 }
 
@@ -57,6 +90,16 @@ func (e *ConfigError) Error() string { return "config " + e.Field + " " + e.Mess
 // Option changes an App's configuration.
 type Option func(*Config)
 
+// WithTransport selects a built-in server. HTTP/2 is experimental and requires TLS.
+func WithTransport(name string) Option {
+	return func(cfg *Config) { cfg.Transport = name }
+}
+
+// WithTLS enables HTTPS. Certificates are loaded before Run opens its listener.
+func WithTLS(certFile, keyFile string) Option {
+	return func(cfg *Config) { cfg.TLS = TLSConfig{CertFile: certFile, KeyFile: keyFile} }
+}
+
 // WithRequestIDHeader changes the header used to read and return request IDs.
 func WithRequestIDHeader(header string) Option {
 	return func(cfg *Config) {
diff --git a/config/config_test.go b/config/config_test.go
index da2141b..0e1e834 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -10,6 +10,7 @@ func TestLoadFromEnvUsesDefaults(t *testing.T) {
 	for _, key := range []string{
 		"GO_OMNI_HTTP_ADDR", "GO_OMNI_REQUEST_ID_HEADER", "GO_OMNI_ENABLE_LOGGER",
 		"GO_OMNI_TRUSTED_PROXIES",
+		"GO_OMNI_TRANSPORT", "GO_OMNI_TLS_CERT_FILE", "GO_OMNI_TLS_KEY_FILE",
 		"GO_OMNI_LOG_LEVEL", "GO_OMNI_LOG_FORMAT", "GO_OMNI_LOG_OUTPUT",
 		"GO_OMNI_LOG_FILE", "GO_OMNI_SERVICE", "GO_OMNI_ENVIRONMENT",
 		"GO_OMNI_LOG_ADD_SOURCE", "GO_OMNI_SHUTDOWN_TIMEOUT",
@@ -21,7 +22,7 @@ func TestLoadFromEnvUsesDefaults(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if cfg.Address != ":8080" || cfg.RequestIDHeader != "X-Request-ID" || cfg.ShutdownTimeout != 10*time.Second {
+	if cfg.Address != ":8080" || cfg.Transport != TransportNetHTTP || cfg.TLS != (TLSConfig{}) || cfg.RequestIDHeader != "X-Request-ID" || cfg.ShutdownTimeout != 10*time.Second {
 		t.Fatalf("unexpected defaults: %+v", cfg)
 	}
 	if cfg.EnableLogger || cfg.Log.Level != "info" || cfg.Log.Format != "json" || cfg.Log.Output != "stderr" {
@@ -29,6 +30,44 @@ func TestLoadFromEnvUsesDefaults(t *testing.T) {
 	}
 }
 
+func TestTransportEnvironment(t *testing.T) {
+	for _, test := range []struct {
+		name, transport, cert, key, errorField string
+	}{
+		{"default", "", "", "", ""},
+		{"native", "native", "", "", ""},
+		{"nativeTLS", "native", "server.crt", "server.key", ""},
+		{"http2", "http2", "server.crt", "server.key", ""},
+		{"unknown", "typo", "", "", "transport"},
+		{"certOnly", "nethttp", "server.crt", "", "tls"},
+		{"keyOnly", "native", "", "server.key", "tls"},
+		{"http2WithoutTLS", "http2", "", "", "tls"},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			t.Setenv("TRANSPORT_TEST_TRANSPORT", test.transport)
+			t.Setenv("TRANSPORT_TEST_TLS_CERT_FILE", test.cert)
+			t.Setenv("TRANSPORT_TEST_TLS_KEY_FILE", test.key)
+			cfg, err := LoadFromEnv("TRANSPORT_TEST_")
+			if test.errorField != "" {
+				if err == nil || !strings.Contains(err.Error(), test.errorField) {
+					t.Fatalf("unexpected error: %v", err)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatal(err)
+			}
+			want := test.transport
+			if want == "" {
+				want = TransportNetHTTP
+			}
+			if cfg.Transport != want || cfg.TLS.CertFile != test.cert || cfg.TLS.KeyFile != test.key {
+				t.Fatalf("settings: %+v", cfg)
+			}
+		})
+	}
+}
+
 func TestLoadFromEnvOverridesSettings(t *testing.T) {
 	t.Setenv("GO_OMNI_HTTP_ADDR", "127.0.0.1:9090")
 	t.Setenv("GO_OMNI_REQUEST_ID_HEADER", "X-Correlation-ID")
diff --git a/config/env.go b/config/env.go
index 7ca2aa3..fa200aa 100644
--- a/config/env.go
+++ b/config/env.go
@@ -19,6 +19,9 @@ func LoadFromEnv(prefix string) (Config, error) {
 	}
 	cfg := Default()
 	cfg.Address = envString(prefix+"HTTP_ADDR", cfg.Address)
+	cfg.Transport = envString(prefix+"TRANSPORT", cfg.Transport)
+	cfg.TLS.CertFile = envString(prefix+"TLS_CERT_FILE", "")
+	cfg.TLS.KeyFile = envString(prefix+"TLS_KEY_FILE", "")
 	cfg.RequestIDHeader = envString(prefix+"REQUEST_ID_HEADER", cfg.RequestIDHeader)
 	if value := strings.TrimSpace(os.Getenv(prefix + "TRUSTED_PROXIES")); value != "" {
 		cfg.TrustedProxies = strings.Split(value, ",")
diff --git a/examples/reference/main.go b/examples/reference/main.go
index aa54170..c386a1d 100644
--- a/examples/reference/main.go
+++ b/examples/reference/main.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"log"
 	"os"
 	"os/signal"
 	"strings"
@@ -41,28 +42,52 @@ func registerRoutes(application *omni.App, users service.UserRepository, logger
 }
 
 func main() {
-	logger, err := logx.New(logx.Config{
-		Service:     "reference-api",
-		Environment: "local",
-		Format:      "json",
-		Writer:      os.Stdout,
-	})
-	if err != nil {
-		os.Exit(1)
-	}
-	defer logger.Close()
 	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
 	defer stop()
+	if err := runReference(ctx); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func referenceConfig() (omni.Config, error) {
+	settings, err := omni.LoadConfig("")
+	if err != nil {
+		return settings, err
+	}
+	// Preserve the example's loopback default and legacy address variable.
+	if strings.TrimSpace(os.Getenv("GO_OMNI_HTTP_ADDR")) == "" {
+		settings.Address = strings.TrimSpace(os.Getenv("GO_OMNI_ADDR"))
+		if settings.Address == "" {
+			settings.Address = "127.0.0.1:8080"
+		}
+	}
+	if settings.Log.Service == "" {
+		settings.Log.Service = "reference-api"
+	}
+	if settings.Log.Environment == "" {
+		settings.Log.Environment = "local"
+	}
+	if strings.TrimSpace(os.Getenv("GO_OMNI_LOG_OUTPUT")) == "" {
+		settings.Log.Output = "stdout"
+	}
+	return settings, nil
+}
+
+func runReference(ctx context.Context) error {
+	settings, err := referenceConfig()
+	if err != nil {
+		return err
+	}
+	logger, err := logx.New(settings.Log)
+	if err != nil {
+		return err
+	}
+	defer logger.Close()
+	logx.SetDefault(logger)
 	users, closeStorage, storage, err := openUsers(ctx, logger)
 	if err != nil {
-		logger.Error("storage initialization failed", "error", err)
-		os.Exit(1)
+		return err
 	}
-	defer func() {
-		if err := closeStorage(); err != nil {
-			logger.Error("storage close failed", "error", err)
-		}
-	}()
 	devToken := strings.TrimSpace(os.Getenv("GO_OMNI_DEV_TOKEN"))
 	if devToken == "" {
 		devToken = "dev-token"
@@ -70,16 +95,11 @@ func main() {
 	authenticator := auth.StaticAuthenticator{
 		devToken: {UserID: "dev-user", Roles: []string{"admin"}},
 	}
-	application := newProtectedApp(users, logger, authenticator)
-	address := os.Getenv("GO_OMNI_ADDR")
-	if address == "" {
-		address = "127.0.0.1:8080"
-	}
-	logger.Info("starting reference API", "address", address, "storage", storage)
-	if err := application.RunContext(ctx, address); err != nil {
-		logger.Error("server stopped", "error", err)
-		os.Exit(1)
-	}
+	application := newProtectedApp(users, logger, authenticator, omni.WithConfig(settings))
+	application.OnShutdown(logger.Close)
+	application.OnShutdown(closeStorage)
+	logger.Info("starting reference API", "address", settings.Address, "transport", settings.Transport, "tls", settings.TLS.CertFile != "", "storage", storage)
+	return application.RunContext(ctx)
 }
 
 func openUsers(ctx context.Context, logger *logx.Logger) (service.UserRepository, func() error, string, error) {
diff --git a/examples/reference/main_test.go b/examples/reference/main_test.go
index ebcbe52..d5e3287 100644
--- a/examples/reference/main_test.go
+++ b/examples/reference/main_test.go
@@ -118,7 +118,7 @@ func TestUserCRUD(t *testing.T) {
 	}
 }
 
-func checkUserCRUD(t *testing.T, app *omni.App) {
+func checkUserCRUD(t *testing.T, app http.Handler) {
 	t.Helper()
 	health := dataAs[map[string]string](t, request(t, app, "GET", "/health", "", 200, "OK"))
 	if health["status"] != "ok" {
diff --git a/examples/reference/transport_test.go b/examples/reference/transport_test.go
new file mode 100644
index 0000000..5b17889
--- /dev/null
+++ b/examples/reference/transport_test.go
@@ -0,0 +1,182 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	omni "git.yuntuo.hk/k2safe/go-omni"
+	"git.yuntuo.hk/k2safe/go-omni/auth"
+	"git.yuntuo.hk/k2safe/go-omni/examples/reference/repository"
+	"git.yuntuo.hk/k2safe/go-omni/internal/testutil"
+)
+
+// networkHandler runs the same business assertions through a real TCP client.
+// The application handler is only called by its configured server transport.
+type networkHandler struct {
+	t                            *testing.T
+	client                       *http.Client
+	address, scheme, token, alpn string
+	proto                        int
+	requests                     *int
+}
+
+func (h networkHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	h.t.Helper()
+	req := r.Clone(r.Context())
+	req.RequestURI = ""
+	req.URL.Scheme, req.URL.Host, req.Host = h.scheme, h.address, h.address
+	if h.token != "" && req.Header.Get("Authorization") == "" {
+		req.Header.Set("Authorization", "Bearer "+h.token)
+	}
+	response, err := h.client.Do(req)
+	if err != nil {
+		h.t.Fatal(err)
+	}
+	defer response.Body.Close()
+	if strings.HasPrefix(req.URL.Path, "/api/v1/") {
+		*h.requests++
+	}
+	if response.ProtoMajor != h.proto {
+		h.t.Fatalf("protocol %s, want HTTP/%d", response.Proto, h.proto)
+	}
+	if h.scheme == "https" && (response.TLS == nil || len(response.TLS.VerifiedChains) == 0 || response.TLS.NegotiatedProtocol != h.alpn) {
+		h.t.Fatalf("TLS/ALPN verification failed: %+v", response.TLS)
+	}
+	for key, values := range response.Header {
+		w.Header()[key] = append([]string(nil), values...)
+	}
+	w.WriteHeader(response.StatusCode)
+	if _, err := io.Copy(w, response.Body); err != nil {
+		h.t.Fatal(err)
+	}
+}
+
+type lockedLog struct {
+	sync.Mutex
+	bytes.Buffer
+}
+
+func (b *lockedLog) Write(p []byte) (int, error) {
+	b.Lock()
+	defer b.Unlock()
+	return b.Buffer.Write(p)
+}
+
+func (b *lockedLog) snapshot() string {
+	b.Lock()
+	defer b.Unlock()
+	return b.Buffer.String()
+}
+
+func TestBusinessConfiguredTransports(t *testing.T) {
+	for _, test := range []struct {
+		name, transport string
+		tls             bool
+		proto           int
+		alpn            string
+	}{
+		{"nethttp", omni.TransportNetHTTP, false, 1, ""},
+		{"native", omni.TransportNative, false, 1, ""},
+		{"nethttpTLS", omni.TransportNetHTTP, true, 2, "h2"},
+		{"nativeTLS", omni.TransportNative, true, 1, "http/1.1"},
+		{"http2TLS", omni.TransportHTTP2, true, 2, "h2"},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			cert, key, tlsClient := testutil.CertificateFiles(t)
+			t.Setenv("REFERENCE_TEST_TRANSPORT", test.transport)
+			t.Setenv("REFERENCE_TEST_SHUTDOWN_TIMEOUT", "3s")
+			t.Setenv("REFERENCE_TEST_TLS_CERT_FILE", "")
+			t.Setenv("REFERENCE_TEST_TLS_KEY_FILE", "")
+			if test.tls {
+				t.Setenv("REFERENCE_TEST_TLS_CERT_FILE", cert)
+				t.Setenv("REFERENCE_TEST_TLS_KEY_FILE", key)
+			}
+			settings, err := omni.LoadConfig("REFERENCE_TEST_")
+			if err != nil {
+				t.Fatal(err)
+			}
+			var logs lockedLog
+			logger := testLogger(&logs)
+			application := newProtectedApp(repository.NewMemoryUsers(), logger, auth.StaticAuthenticator{
+				"admin": {UserID: "admin", Roles: []string{"admin"}},
+				"user":  {UserID: "user", Roles: []string{"user"}},
+			}, omni.WithConfig(settings))
+			application.OnShutdown(logger.Close)
+			listener, err := net.Listen("tcp", "127.0.0.1:0")
+			if err != nil {
+				t.Fatal(err)
+			}
+			ctx, cancel := context.WithCancel(context.Background())
+			done := make(chan error, 1)
+			go func() { done <- application.ServeContext(ctx, listener) }()
+			t.Cleanup(func() {
+				cancel()
+				select {
+				case err := <-done:
+					if err != nil {
+						t.Error(err)
+					}
+				case <-time.After(5 * time.Second):
+					t.Error("business server did not stop")
+					listener.Close()
+				}
+			})
+			client := &http.Client{Timeout: 5 * time.Second, Transport: &http.Transport{TLSClientConfig: tlsClient, ForceAttemptHTTP2: true}}
+			defer client.CloseIdleConnections()
+			scheme := "http"
+			if test.tls {
+				scheme = "https"
+			}
+			requests := 0
+			network := networkHandler{t: t, client: client, address: listener.Addr().String(), scheme: scheme, proto: test.proto, alpn: test.alpn, requests: &requests}
+			request(t, network, "POST", "/api/v1/users", `{"name":"Alice","email":"alice@example.com"}`, 401, "UNAUTHENTICATED")
+			requestWithAuthorization(t, network, "DELETE", "/api/v1/users/1", "", "Bearer user", 403, "FORBIDDEN")
+			network.token = "admin"
+			checkUserCRUD(t, network)
+			request(t, network, "POST", "/api/v1/users", `{"name":`, 400, "INVALID_BODY")
+			count := 0
+			for _, line := range strings.Split(strings.TrimSpace(logs.snapshot()), "\n") {
+				var record map[string]any
+				if err := json.Unmarshal([]byte(line), &record); err != nil {
+					t.Fatal(err)
+				}
+				if record["requestId"] == "reference-test" {
+					count++
+				}
+			}
+			if count < requests {
+				t.Fatalf("missing correlated business logs: %d", count)
+			}
+		})
+	}
+}
+
+func TestReferenceAddressCompatibility(t *testing.T) {
+	t.Setenv("GO_OMNI_TRANSPORT", "native")
+	t.Setenv("GO_OMNI_TLS_CERT_FILE", "")
+	t.Setenv("GO_OMNI_TLS_KEY_FILE", "")
+	t.Setenv("GO_OMNI_HTTP_ADDR", "")
+	t.Setenv("GO_OMNI_ADDR", "")
+	settings, err := referenceConfig()
+	if err != nil || settings.Address != "127.0.0.1:8080" || settings.Transport != "native" {
+		t.Fatalf("default: %+v %v", settings, err)
+	}
+	t.Setenv("GO_OMNI_ADDR", "127.0.0.1:8081")
+	settings, err = referenceConfig()
+	if err != nil || settings.Address != "127.0.0.1:8081" {
+		t.Fatalf("legacy: %+v %v", settings, err)
+	}
+	t.Setenv("GO_OMNI_HTTP_ADDR", "127.0.0.1:8082")
+	settings, err = referenceConfig()
+	if err != nil || settings.Address != "127.0.0.1:8082" {
+		t.Fatalf("standard: %+v %v", settings, err)
+	}
+}
diff --git a/internal/testutil/tls.go b/internal/testutil/tls.go
new file mode 100644
index 0000000..3b44647
--- /dev/null
+++ b/internal/testutil/tls.go
@@ -0,0 +1,61 @@
+// Package testutil contains fixtures shared by transport integration tests.
+package testutil
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/pem"
+	"math/big"
+	"net"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+// CertificateFiles creates a temporary localhost certificate and a client
+// configuration that verifies it. No insecure TLS bypass is needed in tests.
+func CertificateFiles(t testing.TB) (certFile, keyFile string, client *tls.Config) {
+	t.Helper()
+	key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	serial, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 120))
+	if err != nil {
+		t.Fatal(err)
+	}
+	certificate := &x509.Certificate{
+		SerialNumber: serial,
+		NotBefore:    time.Now().Add(-time.Hour), NotAfter: time.Now().Add(time.Hour),
+		DNSNames: []string{"localhost"}, IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
+		KeyUsage:    x509.KeyUsageDigitalSignature,
+		ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+	}
+	der, err := x509.CreateCertificate(rand.Reader, certificate, certificate, &key.PublicKey, key)
+	if err != nil {
+		t.Fatal(err)
+	}
+	keyDER, err := x509.MarshalPKCS8PrivateKey(key)
+	if err != nil {
+		t.Fatal(err)
+	}
+	directory := t.TempDir()
+	certFile, keyFile = filepath.Join(directory, "server.crt"), filepath.Join(directory, "server.key")
+	if err := os.WriteFile(certFile, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: der}), 0600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(keyFile, pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: keyDER}), 0600); err != nil {
+		t.Fatal(err)
+	}
+	leaf, err := x509.ParseCertificate(der)
+	if err != nil {
+		t.Fatal(err)
+	}
+	roots := x509.NewCertPool()
+	roots.AddCert(leaf)
+	return certFile, keyFile, &tls.Config{RootCAs: roots, MinVersion: tls.VersionTLS12}
+}
diff --git a/omni.go b/omni.go
index 8f50ae1..bfe55f2 100644
--- a/omni.go
+++ b/omni.go
@@ -25,12 +25,19 @@ type Router = httpx.Router
 type HTTPRouterGroup = httpx.RouterGroup
 type APIError = apierrors.APIError
 type Config = config.Config
+type TLSConfig = config.TLSConfig
 type Option = config.Option
 type Response = response.Response
 type LogConfig = logx.Config
 type Logger = logx.Logger
 type Metrics = metrics.Metrics
 
+const (
+	TransportNetHTTP = config.TransportNetHTTP
+	TransportNative  = config.TransportNative
+	TransportHTTP2   = config.TransportHTTP2
+)
+
 func New(options ...Option) *App { return app.New(options...) }
 
 func NewWithRouter(router Router, options ...Option) *App {
@@ -45,6 +52,10 @@ func WithTrustedProxies(proxies ...string) Option { return config.WithTrustedPro
 
 func WithConfig(settings Config) Option { return config.WithConfig(settings) }
 
+func WithTransport(name string) Option { return config.WithTransport(name) }
+
+func WithTLS(certFile, keyFile string) Option { return config.WithTLS(certFile, keyFile) }
+
 func WithLogConfig(settings LogConfig) Option { return config.WithLogConfig(settings) }
 
 func WithShutdownTimeout(timeout time.Duration) Option { return config.WithShutdownTimeout(timeout) }
diff --git a/scripts/verifyScaffold.py b/scripts/verifyScaffold.py
index f87a0b5..e8fbc56 100644
--- a/scripts/verifyScaffold.py
+++ b/scripts/verifyScaffold.py
@@ -24,12 +24,13 @@ def run(args, cwd, env):
     return result.stdout
 
 
-def exerciseServer(binary, directory, env, stopSignal, cleanupMarker=None):
+def exerciseServer(binary, directory, env, stopSignal, cleanupMarker=None, transport="nethttp"):
     with socket.socket() as listener:
         listener.bind(("127.0.0.1", 0))
         address = f"127.0.0.1:{listener.getsockname()[1]}"
     serverEnv = {key: value for key, value in env.items() if not key.startswith("GO_OMNI_")}
     serverEnv.update(GO_OMNI_HTTP_ADDR=address,
+                     GO_OMNI_TRANSPORT=transport,
                      GO_OMNI_ENABLE_LOGGER="true", GO_OMNI_SHUTDOWN_TIMEOUT="2s")
     if cleanupMarker:
         serverEnv["GO_OMNI_CLEANUP_MARKER"] = str(cleanupMarker)
@@ -85,7 +86,7 @@ def exerciseServer(binary, directory, env, stopSignal, cleanupMarker=None):
             if process.poll() is None:
                 process.kill()
                 process.wait(timeout=5)
-    print(f"PASS {binary.name}: HTTP checks, {stopSignal.name}, exit 0, listener closed", flush=True)
+    print(f"PASS {binary.name} ({transport}): HTTP checks, {stopSignal.name}, exit 0, listener closed", flush=True)
 
 
 def main():
@@ -95,6 +96,7 @@ def main():
     parser.add_argument("--cli", help="Use a locally built CLI instead of installing")
     parser.add_argument("--framework-version", help="Explicit version passed to the CLI")
     parser.add_argument("--framework-dir", help="Local checkout for pre-release verification")
+    parser.add_argument("--transport", choices=("nethttp", "native"), default="nethttp", help="Plain HTTP transport to exercise (native requires a framework supporting unified transport configuration)")
     parser.add_argument("--skip-run-check", action="store_true", help="Skip core Run signal checks when testing an older framework")
     args = parser.parse_args()
     env = dict(os.environ, GOWORK="off")
@@ -128,7 +130,7 @@ def main():
         binary = directory / "server"
         run([args.go, "build", "-o", str(binary), "./cmd/server"], project, env)
         for stopSignal in (signal.SIGINT, signal.SIGTERM):
-            exerciseServer(binary, project, env, stopSignal)
+            exerciseServer(binary, project, env, stopSignal, transport=args.transport)
 
         if not args.skip_run_check:
             # Verify the framework's convenient Run API independently from the
@@ -142,7 +144,9 @@ import (
     omni "git.yuntuo.hk/k2safe/go-omni"
 )
 func main() {
-    app := omni.New()
+    settings, err := omni.LoadConfig("")
+    if err != nil { log.Fatal(err) }
+    app := omni.New(omni.WithConfig(settings))
     app.GET("/health/live", func(ctx *omni.Context) error { return ctx.OK(map[string]string{"status": "ok"}) })
     app.OnShutdown(func() error { return os.WriteFile(os.Getenv("GO_OMNI_CLEANUP_MARKER"), []byte("closed"), 0600) })
     if err := app.Run(os.Getenv("GO_OMNI_HTTP_ADDR")); err != nil { log.Fatal(err) }
@@ -152,7 +156,7 @@ func main() {
             run([args.go, "build", "-o", str(runBinary), "./cmd/runCheck"], project, env)
             for stopSignal in (signal.SIGINT, signal.SIGTERM):
                 marker = project / f"cleanup-{stopSignal.name}"
-                exerciseServer(runBinary, project, env, stopSignal, marker)
+                exerciseServer(runBinary, project, env, stopSignal, marker, transport=args.transport)
 
 
 if __name__ == "__main__":
diff --git a/transport/native/HTTP2.md b/transport/native/HTTP2.md
index 174578f..223fc3f 100644
--- a/transport/native/HTTP2.md
+++ b/transport/native/HTTP2.md
@@ -42,4 +42,4 @@ HTTP/2 版本需要在 native `Stats` 之外至少记录：活动 stream、被
 - 代理联调：Nginx 的 TLS/h2 回源、Keep-Alive、超时/取消及 GOAWAY 排空已由 `verifyHTTP2Proxy.py` 验证。旧实例处理中的 POST 能正常完成，新请求转入备用实例，旧实例连接与请求归零。此测试使用单进程 Nginx，未验证 Nginx master/worker 重载或 Cloudflare 实网部署。`verifyProxy.py` 继续承担 native HTTP/1.1 TLS 回源验收。
 - 长测：Linux amd64 至少 30 分钟 TLS、多连接、多 stream、慢客户端混合场景；要求 0 协议错误、0 请求串线，连接、stream、goroutine 和 FD 在停止后回收。单连接场景与 8 连接慢上传/慢下载混合场景均已通过，原始日志与采样分别保存在两个报告中。
 
-这些实验结果已经覆盖到 Nginx HTTP/2 回源联调。下一步是统一启动配置、native 的 HTTP/1.1 与 HTTP/2 协议接入回归，以及业务环境试用，不能仅通过添加 `h2` 到 native 的 TLS ALPN 就宣告接入完成。当前继续保持显式选择实验适配器；默认 native 路径仍为 HTTP/1.1，需要成熟 HTTP/2 入口时可使用 `transport/nethttp` 或代理终止后回源 HTTP/1.1。
+统一启动配置已接入 `omni.New`：`GO_OMNI_TRANSPORT=http2` 加证书和私钥可显式选择实验适配器，业务路由不需要改变；native 仍只协商 HTTP/1.1。参考业务增加了三种适配器的真实网络验证与排空/超时回归。下一步是业务环境试用、native 的 HTTP/1.1 与 HTTP/2 多协议监听器设计和接入回归，不能仅通过添加 `h2` 到 native 的 TLS ALPN 就宣告接入完成。需要成熟 HTTP/2 入口时可使用 `transport/nethttp` 或代理终止后回源 HTTP/1.1。
diff --git a/transport/native/server.go b/transport/native/server.go
index f0d0949..bd080bc 100644
--- a/transport/native/server.go
+++ b/transport/native/server.go
@@ -46,6 +46,7 @@ type Server struct {
 	ReadTimeout           time.Duration
 	WriteTimeout          time.Duration
 	IdleTimeout           time.Duration
+	ShutdownTimeout       time.Duration
 	ReadBufferSize        int
 	MaxHeaderBytes        int
 	MaxBodyBytes          int64
@@ -252,15 +253,14 @@ func (s *Server) Serve(ctx context.Context, listener net.Listener) error {
 	s.mu.Unlock()
 	defer cancel()
 
-	shutdownDone := make(chan struct{})
+	stopWatcher, watcherDone := make(chan struct{}), make(chan struct{})
 	go func() {
+		defer close(watcherDone)
 		select {
 		case <-ctx.Done():
-			timeout := s.shutdownTimeout()
-			shutdownCtx, cancel := context.WithTimeout(context.Background(), timeout)
-			_ = s.Shutdown(shutdownCtx)
-			cancel()
-		case <-shutdownDone:
+			// Wake Accept; the serving goroutine owns draining and its error.
+			_ = listener.Close()
+		case <-stopWatcher:
 		}
 	}()
 
@@ -307,20 +307,8 @@ func (s *Server) Serve(ctx context.Context, listener net.Listener) error {
 		go s.serveConnection(baseCtx, state)
 	}
 
-	close(shutdownDone)
-	s.mu.Lock()
-	if s.listener == listener {
-		s.listener = nil
-	}
-	s.mu.Unlock()
-	if ctx.Err() != nil || s.isClosing() {
-		timeout := s.shutdownTimeout()
-		shutdownCtx, cancel := context.WithTimeout(context.Background(), timeout)
-		shutdownErr := s.Shutdown(shutdownCtx)
-		cancel()
-		return errors.Join(shutdownErr, serveErr)
-	}
-	_ = listener.Close()
+	close(stopWatcher)
+	<-watcherDone
 	timeout := s.shutdownTimeout()
 	shutdownCtx, cancel := context.WithTimeout(context.Background(), timeout)
 	shutdownErr := s.Shutdown(shutdownCtx)
@@ -328,17 +316,15 @@ func (s *Server) Serve(ctx context.Context, listener net.Listener) error {
 	return errors.Join(shutdownErr, serveErr)
 }
 
-// Shutdown stops accepting requests, cancels active request contexts and waits
-// for connections to finish. On timeout, active sockets are closed.
+// Shutdown stops accepting requests and waits for active handlers to finish.
+// On timeout, request contexts are canceled and active sockets are closed.
 func (s *Server) Shutdown(ctx context.Context) error {
 	if ctx == nil {
 		ctx = context.Background()
 	}
 	s.mu.Lock()
 	s.closing = true
-	if s.cancel != nil {
-		s.cancel()
-	}
+	cancelRequests := s.cancel
 	listener := s.listener
 	states := make([]*connection, 0, len(s.conns))
 	for state := range s.conns {
@@ -365,6 +351,9 @@ func (s *Server) Shutdown(ctx context.Context) error {
 	case <-done:
 		return nil
 	case <-ctx.Done():
+		if cancelRequests != nil {
+			cancelRequests()
+		}
 		for _, state := range states {
 			state.close()
 		}
@@ -374,6 +363,9 @@ func (s *Server) Shutdown(ctx context.Context) error {
 }
 
 func (s *Server) shutdownTimeout() time.Duration {
+	if s.ShutdownTimeout > 0 {
+		return s.ShutdownTimeout
+	}
 	if value := s.WriteTimeout; value > 0 {
 		return value
 	}
@@ -432,9 +424,15 @@ func (s *Server) serveConnection(baseCtx context.Context, state *connection) {
 		}
 		_ = state.conn.SetReadDeadline(time.Time{})
 		firstRequest = false
+		s.mu.Lock()
+		if s.closing || state.closed.Load() {
+			s.mu.Unlock()
+			return
+		}
+		state.active.Store(true)
+		s.mu.Unlock()
 		requestContext, cancel := context.WithCancel(baseCtx)
 		request = request.WithContext(requestContext)
-		state.active.Store(true)
 		s.activeRequests.Add(1)
 		writer := s.writerPool.Get().(*responseWriter)
 		writer.reset(request.Method)
diff --git a/transport/native/server_test.go b/transport/native/server_test.go
index b6dbc2a..7900856 100644
--- a/transport/native/server_test.go
+++ b/transport/native/server_test.go
@@ -504,12 +504,13 @@ func (b *closeBody) Close() error {
 	return errors.Join(err, b.conn.Close())
 }
 
-func TestServerShutdownCancelsActiveHandler(t *testing.T) {
-	started := make(chan struct{})
+func TestServerShutdownTimeoutCancelsActiveHandler(t *testing.T) {
+	started, canceled := make(chan struct{}), make(chan struct{})
 	application := omni.NewWithRouter(netrouter.New())
 	application.GET("/wait", func(ctx *omni.Context) error {
 		close(started)
 		<-ctx.Context().Done()
+		close(canceled)
 		return ctx.Context().Err()
 	})
 	server, listener, done := startServer(t, application)
@@ -524,19 +525,12 @@ func TestServerShutdownCancelsActiveHandler(t *testing.T) {
 	case <-time.After(2 * time.Second):
 		t.Fatal("handler did not start")
 	}
-	shutdownContext, cancel := context.WithTimeout(context.Background(), time.Second)
+	shutdownContext, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond)
 	defer cancel()
-	if err := server.Shutdown(shutdownContext); err != nil {
-		t.Fatal(err)
-	}
-	response, err := http.ReadResponse(bufio.NewReader(conn), &http.Request{Method: http.MethodGet})
-	if err != nil {
-		t.Fatal(err)
-	}
-	response.Body.Close()
-	if response.StatusCode != http.StatusInternalServerError {
-		t.Fatalf("expected canceled handler to become 500, got %d", response.StatusCode)
+	if err := server.Shutdown(shutdownContext); !errors.Is(err, context.DeadlineExceeded) {
+		t.Fatalf("expected shutdown deadline, got %v", err)
 	}
+	<-canceled
 	conn.Close()
 	select {
 	case err := <-done: