diff --git a/cmd/cmd.go b/cmd/cmd.go
index 2029c77..30d74c4 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"github.com/chainreactors/files"
 	"github.com/chainreactors/logs"
-	"github.com/chainreactors/spray/internal"
-	"github.com/chainreactors/spray/internal/ihttp"
+	"github.com/chainreactors/spray/core"
+	"github.com/chainreactors/spray/core/ihttp"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/utils/iutils"
 	"github.com/jessevdk/go-flags"
@@ -28,11 +28,11 @@ func init() {
 }
 
 func Spray() {
-	var option internal.Option
+	var option core.Option
 
 	if files.IsExist(DefaultConfig) {
 		logs.Log.Debug("config.yaml exist, loading")
-		err := internal.LoadConfig(DefaultConfig, &option)
+		err := core.LoadConfig(DefaultConfig, &option)
 		if err != nil {
 			logs.Log.Error(err.Error())
 			return
@@ -83,7 +83,7 @@ func Spray() {
 		logs.Log.SetLevel(pkg.LogVerbose)
 	}
 	if option.InitConfig {
-		configStr := internal.InitDefaultConfig(&option, 0)
+		configStr := core.InitDefaultConfig(&option, 0)
 		err := os.WriteFile(DefaultConfig, []byte(configStr), 0o744)
 		if err != nil {
 			logs.Log.Warn("cannot create config: config.yaml, " + err.Error())
@@ -96,7 +96,7 @@ func Spray() {
 		return
 	}
 	if option.Config != "" {
-		err := internal.LoadConfig(option.Config, &option)
+		err := core.LoadConfig(option.Config, &option)
 		if err != nil {
 			logs.Log.Error(err.Error())
 			return
@@ -123,13 +123,13 @@ func Spray() {
 		if err != nil {
 			iutils.Fatal(err.Error())
 		}
-		internal.PrintPreset()
+		core.PrintPreset()
 
 		return
 	}
 
 	if option.Format != "" {
-		internal.Format(option)
+		core.Format(option)
 		return
 	}
 
diff --git a/pkg/baseline.go b/core/baseline/baseline.go
similarity index 81%
rename from pkg/baseline.go
rename to core/baseline/baseline.go
index 18df8c1..3f43e97 100644
--- a/pkg/baseline.go
+++ b/core/baseline/baseline.go
@@ -1,14 +1,16 @@
-package pkg
+package baseline
 
 import (
 	"bytes"
 	"github.com/chainreactors/fingers/common"
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/internal/ihttp"
+	"github.com/chainreactors/spray/core/ihttp"
+	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/utils/encode"
 	"github.com/chainreactors/utils/iutils"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 )
 
@@ -23,7 +25,7 @@ func NewBaseline(u, host string, resp *ihttp.Response) *Baseline {
 		},
 	}
 
-	if t, ok := ContentTypeMap[resp.ContentType()]; ok {
+	if t, ok := pkg.ContentTypeMap[resp.ContentType()]; ok {
 		bl.ContentType = t
 		bl.Title = t + " data"
 	} else {
@@ -34,7 +36,6 @@ func NewBaseline(u, host string, resp *ihttp.Response) *Baseline {
 	bl.Header = make([]byte, len(header))
 	copy(bl.Header, header)
 	bl.HeaderLength = len(bl.Header)
-
 	if i := resp.ContentLength(); ihttp.CheckBodySize(i) {
 		if body := resp.Body(); body != nil {
 			bl.Body = make([]byte, len(body))
@@ -50,10 +51,10 @@ func NewBaseline(u, host string, resp *ihttp.Response) *Baseline {
 	}
 
 	bl.Raw = append(bl.Header, bl.Body...)
-	bl.Response, err = ParseRawResponse(bl.Raw)
+	bl.Response, err = pkg.ParseRawResponse(bl.Raw)
 	if err != nil {
 		bl.IsValid = false
-		bl.Reason = ErrResponseError.Error()
+		bl.Reason = pkg.ErrResponseError.Error()
 		bl.ErrString = err.Error()
 		return bl
 	}
@@ -73,7 +74,7 @@ func NewBaseline(u, host string, resp *ihttp.Response) *Baseline {
 		}
 	} else {
 		bl.IsValid = false
-		bl.Reason = ErrUrlError.Error()
+		bl.Reason = pkg.ErrUrlError.Error()
 		bl.ErrString = err.Error()
 	}
 	bl.Unique = UniqueHash(bl)
@@ -116,9 +117,9 @@ type Baseline struct {
 	Url                *url.URL       `json:"-"`
 	Dir                bool           `json:"-"`
 	Chunked            bool           `json:"-"`
-	Body               BS             `json:"-"`
-	Header             BS             `json:"-"`
-	Raw                BS             `json:"-"`
+	Body               pkg.BS         `json:"-"`
+	Header             pkg.BS         `json:"-"`
+	Raw                pkg.BS         `json:"-"`
 	Response           *http.Response `json:"-"`
 	Recu               bool           `json:"-"`
 	RecuDepth          int            `json:"-"`
@@ -147,10 +148,10 @@ func (bl *Baseline) Collect() {
 	if bl.ContentType == "html" || bl.ContentType == "json" || bl.ContentType == "txt" {
 		// 指纹库设计的时候没考虑js,css文件的指纹, 跳过非必要的指纹收集减少误报提高性能
 		//fmt.Println(bl.Source, bl.Url.String()+bl.Path, bl.RedirectURL, "call fingersengine")
-		if EnableAllFingerEngine {
-			bl.Frameworks = EngineDetect(bl.Raw)
+		if pkg.EnableAllFingerEngine {
+			bl.Frameworks = pkg.EngineDetect(bl.Raw)
 		} else {
-			bl.Frameworks = FingersDetect(bl.Raw)
+			bl.Frameworks = pkg.FingersDetect(bl.Raw)
 		}
 	}
 
@@ -158,14 +159,14 @@ func (bl *Baseline) Collect() {
 		if bl.ContentType == "html" {
 			bl.Title = iutils.AsciiEncode(parsers.MatchTitle(bl.Body))
 		} else if bl.ContentType == "ico" {
-			if frame := FingerEngine.Favicon().Match(bl.Body); frame != nil {
+			if frame := pkg.FingerEngine.Favicon().Match(bl.Body); frame != nil {
 				bl.Frameworks.Merge(frame)
 			}
 		}
 	}
 
 	bl.Hashes = parsers.NewHashes(bl.Raw)
-	bl.Extracteds = Extractors.Extract(string(bl.Raw))
+	bl.Extracteds = pkg.Extractors.Extract(string(bl.Raw))
 	bl.Unique = UniqueHash(bl)
 }
 
@@ -173,21 +174,21 @@ func (bl *Baseline) CollectURL() {
 	if len(bl.Body) == 0 {
 		return
 	}
-	for _, reg := range ExtractRegexps["js"][0].CompiledRegexps {
+	for _, reg := range pkg.ExtractRegexps["js"][0].CompiledRegexps {
 		urls := reg.FindAllStringSubmatch(string(bl.Body), -1)
 		for _, u := range urls {
-			u[1] = CleanURL(u[1])
-			if u[1] != "" && !FilterJs(u[1]) {
+			u[1] = pkg.CleanURL(u[1])
+			if u[1] != "" && !pkg.FilterJs(u[1]) {
 				bl.URLs = append(bl.URLs, u[1])
 			}
 		}
 	}
 
-	for _, reg := range ExtractRegexps["url"][0].CompiledRegexps {
+	for _, reg := range pkg.ExtractRegexps["url"][0].CompiledRegexps {
 		urls := reg.FindAllStringSubmatch(string(bl.Body), -1)
 		for _, u := range urls {
-			u[1] = CleanURL(u[1])
-			if u[1] != "" && !FilterUrl(u[1]) {
+			u[1] = pkg.CleanURL(u[1])
+			if u[1] != "" && !pkg.FilterUrl(u[1]) {
 				bl.URLs = append(bl.URLs, u[1])
 			}
 		}
@@ -255,3 +256,9 @@ func (bl *Baseline) FuzzyCompare(other *Baseline) bool {
 	}
 	return false
 }
+
+func UniqueHash(bl *Baseline) uint16 {
+	// 由host+状态码+重定向url+content-type+title+length舍去个位组成的hash
+	// body length可能会导致一些误报, 目前没有更好的解决办法
+	return pkg.CRC16Hash([]byte(bl.Host + strconv.Itoa(bl.Status) + bl.RedirectURL + bl.ContentType + bl.Title + strconv.Itoa(bl.BodyLength/10*10)))
+}
diff --git a/internal/config.go b/core/config.go
similarity index 99%
rename from internal/config.go
rename to core/config.go
index 295f880..8f3299a 100644
--- a/internal/config.go
+++ b/core/config.go
@@ -1,4 +1,4 @@
-package internal
+package core
 
 import (
 	"fmt"
diff --git a/internal/finger.go b/core/finger.go
similarity index 99%
rename from internal/finger.go
rename to core/finger.go
index e4d3f57..216ee13 100644
--- a/internal/finger.go
+++ b/core/finger.go
@@ -1,4 +1,4 @@
-package internal
+package core
 
 import (
 	"fmt"
diff --git a/internal/format.go b/core/format.go
similarity index 93%
rename from internal/format.go
rename to core/format.go
index 346a5f1..0d6fa65 100644
--- a/internal/format.go
+++ b/core/format.go
@@ -1,9 +1,10 @@
-package internal
+package core
 
 import (
 	"bytes"
 	"encoding/json"
 	"github.com/chainreactors/logs"
+	"github.com/chainreactors/spray/core/baseline"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/words/mask"
 	"io"
@@ -24,9 +25,9 @@ func Format(opts Option) {
 	if err != nil {
 		return
 	}
-	group := make(map[string][]*pkg.Baseline)
+	group := make(map[string][]*baseline.Baseline)
 	for _, line := range bytes.Split(bytes.TrimSpace(content), []byte("\n")) {
-		var result pkg.Baseline
+		var result baseline.Baseline
 		err := json.Unmarshal(line, &result)
 		if err != nil {
 			logs.Log.Error(err.Error())
diff --git a/internal/ihttp/client.go b/core/ihttp/client.go
similarity index 100%
rename from internal/ihttp/client.go
rename to core/ihttp/client.go
diff --git a/internal/ihttp/request.go b/core/ihttp/request.go
similarity index 82%
rename from internal/ihttp/request.go
rename to core/ihttp/request.go
index 62d7f81..93c2949 100644
--- a/internal/ihttp/request.go
+++ b/core/ihttp/request.go
@@ -2,6 +2,7 @@ package ihttp
 
 import (
 	"context"
+	"github.com/chainreactors/spray/pkg"
 	"github.com/valyala/fasthttp"
 	"net/http"
 )
@@ -30,7 +31,19 @@ type Request struct {
 	ClientType      int
 }
 
-func (r *Request) SetHeaders(header map[string]string) {
+func (r *Request) SetHeaders(header map[string]string, RandomUA bool) {
+	if header["User-Agent"] == "" {
+		if RandomUA {
+			header["User-Agent"] = pkg.RandomUA()
+		} else {
+			header["User-Agent"] = pkg.DefaultUserAgent
+		}
+	}
+
+	if header["Accept"] == "" {
+		header["Accept"] = "*/*"
+	}
+
 	if r.StandardRequest != nil {
 		for k, v := range header {
 			r.StandardRequest.Header.Set(k, v)
diff --git a/internal/ihttp/response.go b/core/ihttp/response.go
similarity index 98%
rename from internal/ihttp/response.go
rename to core/ihttp/response.go
index 3d2089e..1ee7f58 100644
--- a/internal/ihttp/response.go
+++ b/core/ihttp/response.go
@@ -29,7 +29,7 @@ func (r *Response) Body() []byte {
 	if r.FastResponse != nil {
 		return r.FastResponse.Body()
 	} else if r.StandardResponse != nil {
-		if DefaultMaxBodySize == -1 {
+		if r.StandardResponse.ContentLength == -1 {
 			body, err := io.ReadAll(r.StandardResponse.Body)
 			if err != nil {
 				return nil
diff --git a/internal/option.go b/core/option.go
similarity index 99%
rename from internal/option.go
rename to core/option.go
index 34f5836..55f22d6 100644
--- a/internal/option.go
+++ b/core/option.go
@@ -1,4 +1,4 @@
-package internal
+package core
 
 import (
 	"bufio"
@@ -7,8 +7,9 @@ import (
 	"github.com/chainreactors/files"
 	"github.com/chainreactors/logs"
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/internal/ihttp"
-	"github.com/chainreactors/spray/internal/pool"
+	"github.com/chainreactors/spray/core/baseline"
+	"github.com/chainreactors/spray/core/ihttp"
+	"github.com/chainreactors/spray/core/pool"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/utils"
 	"github.com/chainreactors/utils/iutils"
@@ -231,7 +232,7 @@ func (opt *Option) Prepare() error {
 	}
 
 	// 初始化全局变量
-	pkg.Distance = uint8(opt.SimhashDistance)
+	baseline.Distance = uint8(opt.SimhashDistance)
 	if opt.MaxBodyLength == -1 {
 		ihttp.DefaultMaxBodySize = -1
 	} else {
@@ -263,10 +264,10 @@ func (opt *Option) NewRunner() (*Runner, error) {
 	r := &Runner{
 		Option:   opt,
 		taskCh:   make(chan *Task),
-		outputCh: make(chan *pkg.Baseline, 256),
+		outputCh: make(chan *baseline.Baseline, 256),
 		poolwg:   &sync.WaitGroup{},
 		outwg:    &sync.WaitGroup{},
-		fuzzyCh:  make(chan *pkg.Baseline, 256),
+		fuzzyCh:  make(chan *baseline.Baseline, 256),
 		Headers:  make(map[string]string),
 		Total:    opt.Limit,
 		Color:    true,
diff --git a/internal/pool/brutepool.go b/core/pool/brutepool.go
similarity index 94%
rename from internal/pool/brutepool.go
rename to core/pool/brutepool.go
index fff02b1..a44015a 100644
--- a/internal/pool/brutepool.go
+++ b/core/pool/brutepool.go
@@ -6,7 +6,8 @@ import (
 	"fmt"
 	"github.com/chainreactors/logs"
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/internal/ihttp"
+	"github.com/chainreactors/spray/core/baseline"
+	"github.com/chainreactors/spray/core/ihttp"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/utils/iutils"
 	"github.com/chainreactors/words/rule"
@@ -49,7 +50,7 @@ func NewBrutePool(ctx context.Context, config *Config) (*BrutePool, error) {
 			}),
 			additionCh: make(chan *Unit, config.Thread),
 			closeCh:    make(chan struct{}),
-			processCh:  make(chan *pkg.Baseline, config.Thread),
+			processCh:  make(chan *baseline.Baseline, config.Thread),
 			wg:         &sync.WaitGroup{},
 		},
 		base:  u.Scheme + "://" + u.Host,
@@ -271,10 +272,7 @@ func (pool *BrutePool) Invoke(v interface{}) {
 		return
 	}
 
-	req.SetHeaders(pool.Headers)
-	if pool.RandomUserAgent {
-		req.SetHeader("User-Agent", pkg.RandomUA())
-	}
+	req.SetHeaders(pool.Headers, pool.RandomUserAgent)
 
 	start := time.Now()
 	resp, reqerr := pool.client.Do(req)
@@ -284,11 +282,11 @@ func (pool *BrutePool) Invoke(v interface{}) {
 	}
 
 	// compare与各种错误处理
-	var bl *pkg.Baseline
+	var bl *baseline.Baseline
 	if reqerr != nil && !errors.Is(reqerr, fasthttp.ErrBodyTooLarge) {
 		atomic.AddInt32(&pool.failedCount, 1)
 		atomic.AddInt32(&pool.Statistor.FailedNumber, 1)
-		bl = &pkg.Baseline{
+		bl = &baseline.Baseline{
 			SprayResult: &parsers.SprayResult{
 				UrlString: pool.base + unit.path,
 				ErrString: reqerr.Error(),
@@ -301,15 +299,15 @@ func (pool *BrutePool) Invoke(v interface{}) {
 	} else { // 特定场景优化
 		if unit.source <= 3 || unit.source == parsers.CrawlSource || unit.source == parsers.CommonFileSource {
 			// 一些高优先级的source, 将跳过PreCompare
-			bl = pkg.NewBaseline(req.URI(), req.Host(), resp)
+			bl = baseline.NewBaseline(req.URI(), req.Host(), resp)
 		} else if pool.MatchExpr != nil {
 			// 如果自定义了match函数, 则所有数据送入tempch中
-			bl = pkg.NewBaseline(req.URI(), req.Host(), resp)
+			bl = baseline.NewBaseline(req.URI(), req.Host(), resp)
 		} else if err = pool.PreCompare(resp); err == nil {
 			// 通过预对比跳过一些无用数据, 减少性能消耗
-			bl = pkg.NewBaseline(req.URI(), req.Host(), resp)
+			bl = baseline.NewBaseline(req.URI(), req.Host(), resp)
 		} else {
-			bl = pkg.NewInvalidBaseline(req.URI(), req.Host(), resp, err.Error())
+			bl = baseline.NewInvalidBaseline(req.URI(), req.Host(), resp, err.Error())
 		}
 	}
 
@@ -395,7 +393,7 @@ func (pool *BrutePool) NoScopeInvoke(v interface{}) {
 		logs.Log.Error(err.Error())
 		return
 	}
-	req.SetHeaders(pool.Headers)
+	req.SetHeaders(pool.Headers, pool.RandomUserAgent)
 	req.SetHeader("User-Agent", pkg.RandomUA())
 	resp, reqerr := pool.client.Do(req)
 	if pool.ClientType == ihttp.FAST {
@@ -407,7 +405,7 @@ func (pool *BrutePool) NoScopeInvoke(v interface{}) {
 		return
 	}
 	if resp.StatusCode() == 200 {
-		bl := pkg.NewBaseline(req.URI(), req.Host(), resp)
+		bl := baseline.NewBaseline(req.URI(), req.Host(), resp)
 		bl.Source = unit.source
 		bl.ReqDepth = unit.depth
 		bl.Collect()
@@ -522,7 +520,7 @@ func (pool *BrutePool) checkRedirect(redirectURL string) bool {
 	}
 }
 
-func (pool *BrutePool) Upgrade(bl *pkg.Baseline) error {
+func (pool *BrutePool) Upgrade(bl *baseline.Baseline) error {
 	rurl, err := url.Parse(bl.RedirectURL)
 	if err == nil && rurl.Hostname() == bl.Url.Hostname() && bl.Url.Scheme == "http" && rurl.Scheme == "https" {
 		logs.Log.Infof("baseurl %s upgrade http to https, reinit", pool.BaseURL)
@@ -579,7 +577,7 @@ func (pool *BrutePool) checkHost(u string) bool {
 	return true
 }
 
-func (pool *BrutePool) BaseCompare(bl *pkg.Baseline) bool {
+func (pool *BrutePool) BaseCompare(bl *baseline.Baseline) bool {
 	if !bl.IsValid {
 		return false
 	}
@@ -640,7 +638,7 @@ func (pool *BrutePool) BaseCompare(bl *pkg.Baseline) bool {
 	return true
 }
 
-func (pool *BrutePool) addFuzzyBaseline(bl *pkg.Baseline) {
+func (pool *BrutePool) addFuzzyBaseline(bl *baseline.Baseline) {
 	if _, ok := pool.baselines[bl.Status]; !ok && (EnableAllFuzzy || iutils.IntsContains(pkg.FuzzyStatus, bl.Status)) {
 		bl.IsBaseline = true
 		bl.Collect()
@@ -706,7 +704,7 @@ func (pool *BrutePool) doCheck() {
 	}
 }
 
-func (pool *BrutePool) doRedirect(bl *pkg.Baseline, depth int) {
+func (pool *BrutePool) doRedirect(bl *baseline.Baseline, depth int) {
 	if depth >= pool.MaxRedirect {
 		return
 	}
@@ -730,7 +728,7 @@ func (pool *BrutePool) doRedirect(bl *pkg.Baseline, depth int) {
 	}()
 }
 
-func (pool *BrutePool) doCrawl(bl *pkg.Baseline) {
+func (pool *BrutePool) doCrawl(bl *baseline.Baseline) {
 	if !pool.Crawl || bl.ReqDepth >= pool.MaxCrawlDepth {
 		return
 	}
@@ -762,7 +760,7 @@ func (pool *BrutePool) doCrawl(bl *pkg.Baseline) {
 
 }
 
-func (pool *BrutePool) doScopeCrawl(bl *pkg.Baseline) {
+func (pool *BrutePool) doScopeCrawl(bl *baseline.Baseline) {
 	if bl.ReqDepth >= pool.MaxCrawlDepth {
 		pool.wg.Done()
 		return
@@ -813,13 +811,13 @@ func (pool *BrutePool) doBak() {
 	}
 }
 
-func (pool *BrutePool) doAppend(bl *pkg.Baseline) {
+func (pool *BrutePool) doAppend(bl *baseline.Baseline) {
 	pool.wg.Add(2)
 	pool.doAppendWords(bl)
 	pool.doAppendRule(bl)
 }
 
-func (pool *BrutePool) doAppendRule(bl *pkg.Baseline) {
+func (pool *BrutePool) doAppendRule(bl *baseline.Baseline) {
 	if pool.AppendRule == nil || bl.Source == parsers.AppendRuleSource || bl.ReqDepth >= pool.MaxAppendDepth {
 		pool.wg.Done()
 		return
@@ -840,7 +838,7 @@ func (pool *BrutePool) doAppendRule(bl *pkg.Baseline) {
 	}()
 }
 
-func (pool *BrutePool) doAppendWords(bl *pkg.Baseline) {
+func (pool *BrutePool) doAppendWords(bl *baseline.Baseline) {
 	if pool.AppendWords == nil || bl.Source == parsers.AppendSource || bl.Source == parsers.RuleSource || bl.ReqDepth >= pool.MaxAppendDepth {
 		// 防止自身递归
 		pool.wg.Done()
diff --git a/internal/pool/checkpool.go b/core/pool/checkpool.go
similarity index 90%
rename from internal/pool/checkpool.go
rename to core/pool/checkpool.go
index 1b84cdc..657e08c 100644
--- a/internal/pool/checkpool.go
+++ b/core/pool/checkpool.go
@@ -4,7 +4,8 @@ import (
 	"context"
 	"github.com/chainreactors/logs"
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/internal/ihttp"
+	"github.com/chainreactors/spray/core/baseline"
+	"github.com/chainreactors/spray/core/ihttp"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/panjf2000/ants/v2"
 	"net/url"
@@ -32,7 +33,7 @@ func NewCheckPool(ctx context.Context, config *Config) (*CheckPool, error) {
 			wg:         &sync.WaitGroup{},
 			additionCh: make(chan *Unit, 1024),
 			closeCh:    make(chan struct{}),
-			processCh:  make(chan *pkg.Baseline, config.Thread),
+			processCh:  make(chan *baseline.Baseline, config.Thread),
 		},
 	}
 	pool.Headers = map[string]string{"Connection": "close"}
@@ -115,7 +116,7 @@ func (pool *CheckPool) Invoke(v interface{}) {
 	req, err := ihttp.BuildRequest(pool.ctx, pool.ClientType, unit.path, "", "", "GET")
 	if err != nil {
 		logs.Log.Debug(err.Error())
-		bl := &pkg.Baseline{
+		bl := &baseline.Baseline{
 			SprayResult: &parsers.SprayResult{
 				UrlString: unit.path,
 				IsValid:   false,
@@ -127,13 +128,13 @@ func (pool *CheckPool) Invoke(v interface{}) {
 		pool.processCh <- bl
 		return
 	}
-	req.SetHeaders(pool.Headers)
+	req.SetHeaders(pool.Headers, pool.RandomUserAgent)
 	start := time.Now()
-	var bl *pkg.Baseline
+	var bl *baseline.Baseline
 	resp, reqerr := pool.client.Do(req)
 	if reqerr != nil {
 		pool.failedCount++
-		bl = &pkg.Baseline{
+		bl = &baseline.Baseline{
 			SprayResult: &parsers.SprayResult{
 				UrlString: unit.path,
 				IsValid:   false,
@@ -145,7 +146,7 @@ func (pool *CheckPool) Invoke(v interface{}) {
 		logs.Log.Debugf("%s, %s", unit.path, reqerr.Error())
 		pool.doUpgrade(bl)
 	} else {
-		bl = pkg.NewBaseline(req.URI(), req.Host(), resp)
+		bl = baseline.NewBaseline(req.URI(), req.Host(), resp)
 		bl.ReqDepth = unit.depth
 		bl.Collect()
 		if bl.Status == 400 {
@@ -180,7 +181,7 @@ func (pool *CheckPool) Handler() {
 	}
 }
 
-func (pool *CheckPool) doRedirect(bl *pkg.Baseline, depth int) {
+func (pool *CheckPool) doRedirect(bl *baseline.Baseline, depth int) {
 	if depth >= pool.MaxRedirect {
 		return
 	}
@@ -209,7 +210,7 @@ func (pool *CheckPool) doRedirect(bl *pkg.Baseline, depth int) {
 }
 
 // tcp与400进行协议转换
-func (pool *CheckPool) doUpgrade(bl *pkg.Baseline) {
+func (pool *CheckPool) doUpgrade(bl *baseline.Baseline) {
 	if bl.ReqDepth >= 1 {
 		return
 	}
diff --git a/internal/pool/config.go b/core/pool/config.go
similarity index 89%
rename from internal/pool/config.go
rename to core/pool/config.go
index 9f49652..d57f10d 100644
--- a/internal/pool/config.go
+++ b/core/pool/config.go
@@ -2,7 +2,7 @@ package pool
 
 import (
 	"github.com/chainreactors/logs"
-	"github.com/chainreactors/spray/pkg"
+	"github.com/chainreactors/spray/core/baseline"
 	"github.com/chainreactors/words"
 	"github.com/chainreactors/words/rule"
 	"github.com/expr-lang/expr/vm"
@@ -16,9 +16,9 @@ type Config struct {
 	Thread            int
 	Wordlist          []string
 	Timeout           time.Duration
-	ProcessCh         chan *pkg.Baseline
-	OutputCh          chan *pkg.Baseline
-	FuzzyCh           chan *pkg.Baseline
+	ProcessCh         chan *baseline.Baseline
+	OutputCh          chan *baseline.Baseline
+	FuzzyCh           chan *baseline.Baseline
 	Outwg             *sync.WaitGroup
 	RateLimit         int
 	CheckPeriod       int
diff --git a/internal/pool/pool.go b/core/pool/pool.go
similarity index 77%
rename from internal/pool/pool.go
rename to core/pool/pool.go
index d183b79..36b58c0 100644
--- a/internal/pool/pool.go
+++ b/core/pool/pool.go
@@ -3,7 +3,8 @@ package pool
 import (
 	"context"
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/internal/ihttp"
+	"github.com/chainreactors/spray/core/baseline"
+	"github.com/chainreactors/spray/core/ihttp"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/words"
 	"sync"
@@ -18,7 +19,7 @@ type BasePool struct {
 	Cancel      context.CancelFunc
 	client      *ihttp.Client
 	ctx         context.Context
-	processCh   chan *pkg.Baseline // 待处理的baseline
+	processCh   chan *baseline.Baseline // 待处理的baseline
 	dir         string
 	reqCount    int
 	failedCount int
@@ -28,7 +29,7 @@ type BasePool struct {
 	isFallback  atomic.Bool
 }
 
-func (pool *BasePool) doRetry(bl *pkg.Baseline) {
+func (pool *BasePool) doRetry(bl *baseline.Baseline) {
 	if bl.Retry >= pool.RetryLimit {
 		return
 	}
@@ -56,7 +57,7 @@ func (pool *BasePool) addAddition(u *Unit) {
 	pool.additionCh <- u
 }
 
-func (pool *BasePool) putToOutput(bl *pkg.Baseline) {
+func (pool *BasePool) putToOutput(bl *baseline.Baseline) {
 	if bl.IsValid || bl.IsFuzzy {
 		bl.Collect()
 	}
@@ -64,7 +65,7 @@ func (pool *BasePool) putToOutput(bl *pkg.Baseline) {
 	pool.OutputCh <- bl
 }
 
-func (pool *BasePool) putToFuzzy(bl *pkg.Baseline) {
+func (pool *BasePool) putToFuzzy(bl *baseline.Baseline) {
 	pool.Outwg.Add(1)
 	bl.IsFuzzy = true
 	pool.FuzzyCh <- bl
diff --git a/internal/pool/type.go b/core/pool/type.go
similarity index 71%
rename from internal/pool/type.go
rename to core/pool/type.go
index 9967169..e3bb98f 100644
--- a/internal/pool/type.go
+++ b/core/pool/type.go
@@ -2,7 +2,7 @@ package pool
 
 import (
 	"github.com/chainreactors/parsers"
-	"github.com/chainreactors/spray/pkg"
+	"github.com/chainreactors/spray/core/baseline"
 )
 
 func newUnit(path string, source parsers.SpraySource) *Unit {
@@ -21,7 +21,7 @@ type Unit struct {
 	depth    int
 }
 
-func (u *Unit) Update(bl *pkg.Baseline) {
+func (u *Unit) Update(bl *baseline.Baseline) {
 	bl.Number = u.number
 	bl.Parent = u.parent
 	bl.Host = u.host
@@ -31,15 +31,15 @@ func (u *Unit) Update(bl *pkg.Baseline) {
 
 func NewBaselines() *Baselines {
 	return &Baselines{
-		baselines: map[int]*pkg.Baseline{},
+		baselines: map[int]*baseline.Baseline{},
 	}
 }
 
 type Baselines struct {
-	FailedBaselines []*pkg.Baseline
-	random          *pkg.Baseline
-	index           *pkg.Baseline
-	baselines       map[int]*pkg.Baseline
+	FailedBaselines []*baseline.Baseline
+	random          *baseline.Baseline
+	index           *baseline.Baseline
+	baselines       map[int]*baseline.Baseline
 }
 
 type SprayMod int
diff --git a/internal/runner.go b/core/runner.go
similarity index 96%
rename from internal/runner.go
rename to core/runner.go
index de35315..ba342c5 100644
--- a/internal/runner.go
+++ b/core/runner.go
@@ -1,11 +1,12 @@
-package internal
+package core
 
 import (
 	"context"
 	"github.com/chainreactors/files"
 	"github.com/chainreactors/logs"
-	"github.com/chainreactors/spray/internal/ihttp"
-	"github.com/chainreactors/spray/internal/pool"
+	"github.com/chainreactors/spray/core/baseline"
+	"github.com/chainreactors/spray/core/ihttp"
+	"github.com/chainreactors/spray/core/pool"
 	"github.com/chainreactors/spray/pkg"
 	"github.com/chainreactors/words"
 	"github.com/chainreactors/words/rule"
@@ -28,8 +29,8 @@ type Runner struct {
 	taskCh        chan *Task
 	poolwg        *sync.WaitGroup
 	outwg         *sync.WaitGroup
-	outputCh      chan *pkg.Baseline
-	fuzzyCh       chan *pkg.Baseline
+	outputCh      chan *baseline.Baseline
+	fuzzyCh       chan *baseline.Baseline
 	bar           *mpb.Bar
 	bruteMod      bool
 	IsCheck       bool
@@ -254,7 +255,9 @@ Loop:
 		}
 	}
 
-	r.bar.Wait()
+	if r.bar != nil {
+		r.bar.Wait()
+	}
 	r.poolwg.Wait()
 	r.outwg.Wait()
 }
@@ -285,7 +288,7 @@ Loop:
 	r.outwg.Wait()
 }
 
-func (r *Runner) AddRecursive(bl *pkg.Baseline) {
+func (r *Runner) AddRecursive(bl *baseline.Baseline) {
 	// 递归新任务
 	task := &Task{
 		baseUrl: bl.UrlString,
@@ -361,7 +364,7 @@ func (r *Runner) saveStat(content string) {
 	}
 }
 
-func (r *Runner) Output(bl *pkg.Baseline) {
+func (r *Runner) Output(bl *baseline.Baseline) {
 	var out string
 	if r.Option.Json {
 		out = bl.ToJson()
diff --git a/internal/task.go b/core/task.go
similarity index 98%
rename from internal/task.go
rename to core/task.go
index fe1bef3..75003ed 100644
--- a/internal/task.go
+++ b/core/task.go
@@ -1,4 +1,4 @@
-package internal
+package core
 
 import (
 	"fmt"
diff --git a/internal/types.go b/core/types.go
similarity index 97%
rename from internal/types.go
rename to core/types.go
index 9faf981..ab9dd53 100644
--- a/internal/types.go
+++ b/core/types.go
@@ -1,4 +1,4 @@
-package internal
+package core
 
 import (
 	"github.com/chainreactors/spray/pkg"
diff --git a/pkg/utils.go b/pkg/utils.go
index fdb098a..0891b4d 100644
--- a/pkg/utils.go
+++ b/pkg/utils.go
@@ -87,7 +87,8 @@ var (
 		"Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)",
 		"Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)",
 	}
-	uacount = len(randomUserAgent)
+	uacount          = len(randomUserAgent)
+	DefaultUserAgent = randomUserAgent[rand.Intn(uacount)]
 )
 
 type BS []byte
@@ -327,12 +328,6 @@ func Dir(u string) string {
 	}
 }
 
-func UniqueHash(bl *Baseline) uint16 {
-	// 由host+状态码+重定向url+content-type+title+length舍去个位组成的hash
-	// body length可能会导致一些误报, 目前没有更好的解决办法
-	return CRC16Hash([]byte(bl.Host + strconv.Itoa(bl.Status) + bl.RedirectURL + bl.ContentType + bl.Title + strconv.Itoa(bl.BodyLength/10*10)))
-}
-
 func FormatURL(base, u string) string {
 	if strings.HasPrefix(u, "http") {
 		parsed, err := url.Parse(u)