实现基础的206 partial content缓存

2025-11-23 07:00:25 +08:00 · 2022-03-03 19:36:28 +08:00
parent 6984257224
commit 619407f9e4
39 changed files with 1139 additions and 271 deletions
--- a/internal/nodes/api_stream.go
+++ b/internal/nodes/api_stream.go
@@ -240,7 +240,7 @@ func (this *APIStream) handleReadCache(message *pb.NodeStreamMessage) error {
 		}()
 	}

-	reader, err := storage.OpenReader(msg.Key, false)
+	reader, err := storage.OpenReader(msg.Key, false, false)
 	if err != nil {
 		if err == caches.ErrNotFound {
 			this.replyFail(message.RequestId, "key not found")
@@ -351,7 +351,11 @@ func (this *APIStream) handlePurgeCache(message *pb.NodeStreamMessage) error {
 	if msg.Type == "file" {
 		var keys = msg.Keys
 		for _, key := range keys {
-			keys = append(keys, key+webpCacheSuffix, key+cacheMethodSuffix+"HEAD")
+			keys = append(keys,
+				key+cacheMethodSuffix+"HEAD",
+				key+webpCacheSuffix,
+				key+cachePartialSuffix,
+			)
 			// TODO 根据实际缓存的内容进行组合
 			for _, encoding := range compressions.AllEncodings() {
 				keys = append(keys, key+compressionCacheSuffix+encoding)
--- a/internal/nodes/http_request_cache.go
+++ b/internal/nodes/http_request_cache.go
@@ -10,6 +10,8 @@ import (
 	"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
 	"github.com/TeaOSLab/EdgeNode/internal/rpc"
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	rangeutils "github.com/TeaOSLab/EdgeNode/internal/utils/ranges"
+	"github.com/iwind/TeaGo/types"
 	"io"
 	"net/http"
 	"path/filepath"
@@ -36,6 +38,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 		return
 	}

+	// 添加 X-Cache Header
 	var addStatusHeader = this.web.Cache.AddStatusHeader
 	if addStatusHeader {
 		defer func() {
@@ -137,7 +140,12 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	if this.web.Cache.PurgeIsOn && strings.ToUpper(this.RawReq.Method) == "PURGE" && this.RawReq.Header.Get("X-Edge-Purge-Key") == this.web.Cache.PurgeKey {
 		this.varMapping["cache.status"] = "PURGE"

-		var subKeys = []string{key, key + cacheMethodSuffix + "HEAD"}
+		var subKeys = []string{
+			key,
+			key + cacheMethodSuffix + "HEAD",
+			key + webpCacheSuffix,
+			key + cachePartialSuffix,
+		}
 		// TODO 根据实际缓存的内容进行组合
 		for _, encoding := range compressions.AllEncodings() {
 			subKeys = append(subKeys, key+compressionCacheSuffix+encoding)
@@ -180,10 +188,14 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	var reader caches.Reader
 	var err error

+	var rangeHeader = this.RawReq.Header.Get("Range")
+	var isPartialRequest = len(rangeHeader) > 0
+
 	// 检查是否支持WebP
 	var webPIsEnabled = false
 	var isHeadMethod = method == http.MethodHead
-	if !isHeadMethod &&
+	if !isPartialRequest &&
+		!isHeadMethod &&
 		this.web.WebP != nil &&
 		this.web.WebP.IsOn &&
 		this.web.WebP.MatchRequest(filepath.Ext(this.Path()), this.Format) &&
@@ -192,13 +204,13 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	}

 	// 检查压缩缓存
-	if !isHeadMethod && reader == nil {
+	if !isPartialRequest && !isHeadMethod && reader == nil {
 		if this.web.Compression != nil && this.web.Compression.IsOn {
 			_, encoding, ok := this.web.Compression.MatchAcceptEncoding(this.RawReq.Header.Get("Accept-Encoding"))
 			if ok {
 				// 检查支持WebP的压缩缓存
 				if webPIsEnabled {
-					reader, _ = storage.OpenReader(key+webpCacheSuffix+compressionCacheSuffix+encoding, useStale)
+					reader, _ = storage.OpenReader(key+webpCacheSuffix+compressionCacheSuffix+encoding, useStale, false)
 					if reader != nil {
 						tags = append(tags, "webp", encoding)
 					}
@@ -206,7 +218,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {

 				// 检查普通缓存
 				if reader == nil {
-					reader, _ = storage.OpenReader(key+compressionCacheSuffix+encoding, useStale)
+					reader, _ = storage.OpenReader(key+compressionCacheSuffix+encoding, useStale, false)
 					if reader != nil {
 						tags = append(tags, encoding)
 					}
@@ -216,8 +228,11 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	}

 	// 检查WebP
-	if !isHeadMethod && reader == nil && webPIsEnabled {
-		reader, _ = storage.OpenReader(key+webpCacheSuffix, useStale)
+	if !isPartialRequest &&
+		!isHeadMethod &&
+		reader == nil &&
+		webPIsEnabled {
+		reader, _ = storage.OpenReader(key+webpCacheSuffix, useStale, false)
 		if reader != nil {
 			this.writer.cacheReaderSuffix = webpCacheSuffix
 			tags = append(tags, "webp")
@@ -225,8 +240,18 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	}

 	// 检查正常的文件
+	var isPartialCache = false
 	if reader == nil {
-		reader, err = storage.OpenReader(key, useStale)
+		reader, err = storage.OpenReader(key, useStale, false)
+		if err != nil && this.cacheRef.AllowPartialContent {
+			pReader := this.tryPartialReader(storage, key, useStale, rangeHeader)
+			if pReader != nil {
+				isPartialCache = true
+				reader = pReader
+				err = nil
+			}
+		}
+
 		if err != nil {
 			if err == caches.ErrNotFound {
 				// cache相关变量
@@ -260,7 +285,16 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	}

 	// 准备Buffer
-	var pool = this.bytePool(reader.BodySize())
+	var fileSize = reader.BodySize()
+	var totalSizeString = types.String(fileSize)
+	if isPartialCache {
+		fileSize = reader.(*caches.PartialFileReader).MaxLength()
+		if totalSizeString == "0" {
+			totalSizeString = "*"
+		}
+	}
+
+	var pool = this.bytePool(fileSize)
 	var buf = pool.Get()
 	defer func() {
 		pool.Put(buf)
@@ -323,7 +357,9 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 			eTag = "\"" + strconv.FormatInt(lastModifiedAt, 10) + "\""
 		}
 		respHeader.Del("Etag")
-		respHeader["ETag"] = []string{eTag}
+		if !isPartialCache {
+			respHeader["ETag"] = []string{eTag}
+		}
 	}

 	// 支持 Last-Modified
@@ -331,11 +367,13 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	var modifiedTime = ""
 	if lastModifiedAt > 0 {
 		modifiedTime = time.Unix(utils.GMTUnixTime(lastModifiedAt), 0).Format("Mon, 02 Jan 2006 15:04:05") + " GMT"
-		respHeader.Set("Last-Modified", modifiedTime)
+		if !isPartialCache {
+			respHeader.Set("Last-Modified", modifiedTime)
+		}
 	}

 	// 支持 If-None-Match
-	if len(eTag) > 0 && this.requestHeader("If-None-Match") == eTag {
+	if !isPartialCache && len(eTag) > 0 && this.requestHeader("If-None-Match") == eTag {
 		// 自定义Header
 		this.processResponseHeaders(http.StatusNotModified)
 		this.writer.WriteHeader(http.StatusNotModified)
@@ -346,7 +384,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 	}

 	// 支持 If-Modified-Since
-	if len(modifiedTime) > 0 && this.requestHeader("If-Modified-Since") == modifiedTime {
+	if !isPartialCache && len(modifiedTime) > 0 && this.requestHeader("If-Modified-Since") == modifiedTime {
 		// 自定义Header
 		this.processResponseHeaders(http.StatusNotModified)
 		this.writer.WriteHeader(http.StatusNotModified)
@@ -364,69 +402,55 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 		this.writer.WriteHeader(reader.Status())
 	} else {
 		ifRangeHeaders, ok := this.RawReq.Header["If-Range"]
-		supportRange := true
+		var supportRange = true
 		if ok {
 			supportRange = false
 			for _, v := range ifRangeHeaders {
 				if v == this.writer.Header().Get("ETag") || v == this.writer.Header().Get("Last-Modified") {
 					supportRange = true
+					break
 				}
 			}
 		}

 		// 支持Range
-		rangeSet := [][]int64{}
+		var ranges = []rangeutils.Range{}
 		if supportRange {
-			fileSize := reader.BodySize()
-			contentRange := this.RawReq.Header.Get("Range")
-			if len(contentRange) > 0 {
+			if len(rangeHeader) > 0 {
 				if fileSize == 0 {
 					this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
 					this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 					return true
 				}

-				set, ok := httpRequestParseContentRange(contentRange)
+				set, ok := httpRequestParseRangeHeader(rangeHeader)
 				if !ok {
 					this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
 					this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 					return true
 				}
 				if len(set) > 0 {
-					rangeSet = set
-					for _, arr := range rangeSet {
-						if arr[0] == -1 {
-							arr[0] = fileSize + arr[1]
-							arr[1] = fileSize - 1
-
-							if arr[0] < 0 {
-								this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
-								this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
-								return true
-							}
-						}
-						if arr[1] < 0 {
-							arr[1] = fileSize - 1
-						}
-						if arr[1] >= fileSize {
-							arr[1] = fileSize - 1
-						}
-						if arr[0] > arr[1] {
+					ranges = set
+					for k, r := range ranges {
+						r2, ok := r.Convert(fileSize)
+						if !ok {
 							this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
 							this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 							return true
 						}
+
+						ranges[k] = r2
 					}
 				}
 			}
 		}

-		if len(rangeSet) == 1 {
-			respHeader.Set("Content-Range", "bytes "+strconv.FormatInt(rangeSet[0][0], 10)+"-"+strconv.FormatInt(rangeSet[0][1], 10)+"/"+strconv.FormatInt(reader.BodySize(), 10))
-			respHeader.Set("Content-Length", strconv.FormatInt(rangeSet[0][1]-rangeSet[0][0]+1, 10))
+		if len(ranges) == 1 {
+			respHeader.Set("Content-Range", ranges[0].ComposeContentRangeHeader(totalSizeString))
+			respHeader.Set("Content-Length", strconv.FormatInt(ranges[0].Length(), 10))
 			this.writer.WriteHeader(http.StatusPartialContent)

-			err = reader.ReadBodyRange(buf, rangeSet[0][0], rangeSet[0][1], func(n int) (goNext bool, err error) {
+			err = reader.ReadBodyRange(buf, ranges[0].Start(), ranges[0].End(), func(n int) (goNext bool, err error) {
 				_, err = this.writer.Write(buf[:n])
 				if err != nil {
 					return false, errWritingToClient
@@ -446,15 +470,15 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 				}
 				return
 			}
-		} else if len(rangeSet) > 1 {
-			boundary := httpRequestGenBoundary()
+		} else if len(ranges) > 1 {
+			var boundary = httpRequestGenBoundary()
 			respHeader.Set("Content-Type", "multipart/byteranges; boundary="+boundary)
 			respHeader.Del("Content-Length")
 			contentType := respHeader.Get("Content-Type")

 			this.writer.WriteHeader(http.StatusPartialContent)

-			for index, set := range rangeSet {
+			for index, r := range ranges {
 				if index == 0 {
 					_, err = this.writer.WriteString("--" + boundary + "\r\n")
 				} else {
@@ -465,7 +489,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 					return true
 				}

-				_, err = this.writer.WriteString("Content-Range: " + "bytes " + strconv.FormatInt(set[0], 10) + "-" + strconv.FormatInt(set[1], 10) + "/" + strconv.FormatInt(reader.BodySize(), 10) + "\r\n")
+				_, err = this.writer.WriteString("Content-Range: " + r.ComposeContentRangeHeader(totalSizeString) + "\r\n")
 				if err != nil {
 					// 不提示写入客户端错误
 					return true
@@ -479,7 +503,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 					}
 				}

-				err := reader.ReadBodyRange(buf, set[0], set[1], func(n int) (goNext bool, err error) {
+				err := reader.ReadBodyRange(buf, r.Start(), r.End(), func(n int) (goNext bool, err error) {
 					_, err = this.writer.Write(buf[:n])
 					if err != nil {
 						return false, errWritingToClient
@@ -503,7 +527,7 @@ func (this *HTTPRequest) doCacheRead(useStale bool) (shouldStop bool) {
 			}
 		} else { // 没有Range
 			var resp = &http.Response{Body: reader}
-			this.writer.Prepare(resp, reader.BodySize(), reader.Status(), false)
+			this.writer.Prepare(resp, fileSize, reader.Status(), false)
 			this.writer.WriteHeader(reader.Status())

 			_, err = io.CopyBuffer(this.writer, resp.Body, buf)
@@ -544,3 +568,47 @@ func (this *HTTPRequest) addExpiresHeader(expiresAt int64) {
 		}
 	}
 }
+
+// 尝试读取区间缓存
+func (this *HTTPRequest) tryPartialReader(storage caches.StorageInterface, key string, useStale bool, rangeHeader string) caches.Reader {
+	// 尝试读取Partial cache
+	if len(rangeHeader) == 0 {
+		return nil
+	}
+
+	ranges, ok := httpRequestParseRangeHeader(rangeHeader)
+	if !ok {
+		return nil
+	}
+
+	pReader, pErr := storage.OpenReader(key+cachePartialSuffix, useStale, true)
+	if pErr != nil {
+		return nil
+	}
+
+	partialReader, ok := pReader.(*caches.PartialFileReader)
+	if !ok {
+		_ = pReader.Close()
+		return nil
+	}
+	var isOk = false
+	defer func() {
+		if !isOk {
+			_ = pReader.Close()
+		}
+	}()
+
+	// 检查范围
+	for _, r := range ranges {
+		r1, ok := r.Convert(partialReader.MaxLength())
+		if !ok {
+			return nil
+		}
+		if !partialReader.ContainsRange(r1) {
+			return nil
+		}
+	}
+
+	isOk = true
+	return pReader
+}
--- a/internal/nodes/http_request_root.go
+++ b/internal/nodes/http_request_root.go
@@ -2,10 +2,12 @@ package nodes

 import (
 	"fmt"
+	rangeutils "github.com/TeaOSLab/EdgeNode/internal/utils/ranges"
 	"github.com/TeaOSLab/EdgeNode/internal/zero"
 	"github.com/cespare/xxhash"
 	"github.com/iwind/TeaGo/Tea"
 	"github.com/iwind/TeaGo/logs"
+	"github.com/iwind/TeaGo/types"
 	"io"
 	"io/fs"
 	"mime"
@@ -186,7 +188,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 	}

 	// length
-	fileSize := stat.Size()
+	var fileSize = stat.Size()

 	// 支持 Last-Modified
 	modifiedTime := stat.ModTime().Format("Mon, 02 Jan 2006 15:04:05 GMT")
@@ -231,6 +233,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 		for _, v := range ifRangeHeaders {
 			if v == eTag || v == modifiedTime {
 				supportRange = true
+				break
 			}
 		}
 		if !supportRange {
@@ -239,7 +242,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 	}

 	// 支持Range
-	rangeSet := [][]int64{}
+	var ranges = []rangeutils.Range{}
 	if supportRange {
 		contentRange := this.RawReq.Header.Get("Range")
 		if len(contentRange) > 0 {
@@ -249,36 +252,22 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 				return true
 			}

-			set, ok := httpRequestParseContentRange(contentRange)
+			set, ok := httpRequestParseRangeHeader(contentRange)
 			if !ok {
 				this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
 				this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 				return true
 			}
 			if len(set) > 0 {
-				rangeSet = set
-				for _, arr := range rangeSet {
-					if arr[0] == -1 {
-						arr[0] = fileSize + arr[1]
-						arr[1] = fileSize - 1
-
-						if arr[0] < 0 {
-							this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
-							this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
-							return true
-						}
-					}
-					if arr[1] > 0 {
-						arr[1] = fileSize - 1
-					}
-					if arr[1] < 0 {
-						arr[1] = fileSize - 1
-					}
-					if arr[0] > arr[1] {
+				ranges = set
+				for k, r := range ranges {
+					r2, ok := r.Convert(fileSize)
+					if !ok {
 						this.processResponseHeaders(http.StatusRequestedRangeNotSatisfiable)
 						this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 						return true
 					}
+					ranges[k] = r2
 				}
 			}
 		} else {
@@ -298,7 +287,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 	this.processResponseHeaders(http.StatusOK)

 	// 在Range请求中不能缓存
-	if len(rangeSet) > 0 {
+	if len(ranges) > 0 {
 		this.cacheRef = nil // 不支持缓存
 	}

@@ -311,11 +300,11 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 		pool.Put(buf)
 	}()

-	if len(rangeSet) == 1 {
-		respHeader.Set("Content-Range", "bytes "+strconv.FormatInt(rangeSet[0][0], 10)+"-"+strconv.FormatInt(rangeSet[0][1], 10)+"/"+strconv.FormatInt(fileSize, 10))
+	if len(ranges) == 1 {
+		respHeader.Set("Content-Range", ranges[0].ComposeContentRangeHeader(types.String(fileSize)))
 		this.writer.WriteHeader(http.StatusPartialContent)

-		ok, err := httpRequestReadRange(reader, buf, rangeSet[0][0], rangeSet[0][1], func(buf []byte, n int) error {
+		ok, err := httpRequestReadRange(reader, buf, ranges[0].Start(), ranges[0].End(), func(buf []byte, n int) error {
 			_, err := this.writer.Write(buf[:n])
 			return err
 		})
@@ -328,13 +317,13 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 			this.writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
 			return true
 		}
-	} else if len(rangeSet) > 1 {
+	} else if len(ranges) > 1 {
 		boundary := httpRequestGenBoundary()
 		respHeader.Set("Content-Type", "multipart/byteranges; boundary="+boundary)

 		this.writer.WriteHeader(http.StatusPartialContent)

-		for index, set := range rangeSet {
+		for index, r := range ranges {
 			if index == 0 {
 				_, err = this.writer.WriteString("--" + boundary + "\r\n")
 			} else {
@@ -345,7 +334,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 				return true
 			}

-			_, err = this.writer.WriteString("Content-Range: " + "bytes " + strconv.FormatInt(set[0], 10) + "-" + strconv.FormatInt(set[1], 10) + "/" + strconv.FormatInt(fileSize, 10) + "\r\n")
+			_, err = this.writer.WriteString("Content-Range: " + r.ComposeContentRangeHeader(types.String(fileSize)) + "\r\n")
 			if err != nil {
 				logs.Error(err)
 				return true
@@ -359,7 +348,7 @@ func (this *HTTPRequest) doRoot() (isBreak bool) {
 				}
 			}

-			ok, err := httpRequestReadRange(reader, buf, set[0], set[1], func(buf []byte, n int) error {
+			ok, err := httpRequestReadRange(reader, buf, r.Start(), r.End(), func(buf []byte, n int) error {
 				_, err := this.writer.Write(buf[:n])
 				return err
 			})
--- a/internal/nodes/http_request_utils.go
+++ b/internal/nodes/http_request_utils.go
@@ -5,15 +5,20 @@ import (
 	"fmt"
 	teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
 	"github.com/TeaOSLab/EdgeNode/internal/utils"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/ranges"
+	"github.com/iwind/TeaGo/types"
 	"io"
 	"net/http"
+	"regexp"
 	"strconv"
 	"strings"
 	"sync/atomic"
 )

+var contentRangeRegexp = regexp.MustCompile(`^bytes (\d+)-(\d+)/`)
+
 // 分解Range
-func httpRequestParseContentRange(rangeValue string) (result [][]int64, ok bool) {
+func httpRequestParseRangeHeader(rangeValue string) (result []rangeutils.Range, ok bool) {
 	// 参考RFC：https://tools.ietf.org/html/rfc7233
 	index := strings.Index(rangeValue, "=")
 	if index == -1 {
@@ -24,15 +29,15 @@ func httpRequestParseContentRange(rangeValue string) (result [][]int64, ok bool)
 		return
 	}

-	rangeSetString := rangeValue[index+1:]
+	var rangeSetString = rangeValue[index+1:]
 	if len(rangeSetString) == 0 {
 		ok = true
 		return
 	}

-	pieces := strings.Split(rangeSetString, ", ")
+	var pieces = strings.Split(rangeSetString, ", ")
 	for _, piece := range pieces {
-		index := strings.Index(piece, "-")
+		index = strings.Index(piece, "-")
 		if index == -1 {
 			return
 		}
@@ -70,7 +75,7 @@ func httpRequestParseContentRange(rangeValue string) (result [][]int64, ok bool)
 			lastInt = -lastInt
 		}

-		result = append(result, []int64{firstInt, lastInt})
+		result = append(result, [2]int64{firstInt, lastInt})
 	}

 	ok = true
@@ -119,6 +124,15 @@ func httpRequestReadRange(reader io.Reader, buf []byte, start int64, end int64,
 	}
 }

+// 分解Content-Range
+func httpRequestParseContentRangeHeader(contentRange string) (start int64) {
+	var matches = contentRangeRegexp.FindStringSubmatch(contentRange)
+	if len(matches) < 3 {
+		return -1
+	}
+	return types.Int64(matches[1])
+}
+
 // 生成boundary
 // 仿照Golang自带的函数（multipart包）
 func httpRequestGenBoundary() string {
@@ -130,6 +144,21 @@ func httpRequestGenBoundary() string {
 	return fmt.Sprintf("%x", buf[:])
 }

+// 从content-type中读取boundary
+func httpRequestParseBoundary(contentType string) string {
+	var delim = "boundary="
+	var boundaryIndex = strings.Index(contentType, delim)
+	if boundaryIndex < 0 {
+		return ""
+	}
+	var boundary = contentType[boundaryIndex+len(delim):]
+	semicolonIndex := strings.Index(boundary, ";")
+	if semicolonIndex >= 0 {
+		return boundary[:semicolonIndex]
+	}
+	return boundary
+}
+
 // 判断状态是否为跳转
 func httpStatusIsRedirect(statusCode int) bool {
 	return statusCode == http.StatusPermanentRedirect ||
--- a/internal/nodes/http_request_utils_test.go
+++ b/internal/nodes/http_request_utils_test.go
@@ -17,52 +17,84 @@ func TestHTTPRequest_httpRequestGenBoundary(t *testing.T) {
 	}
 }

-func TestHTTPRequest_httpRequestParseContentRange(t *testing.T) {
-	a := assert.NewAssertion(t)
+func TestHTTPRequest_httpRequestParseBoundary(t *testing.T) {
+	var a = assert.NewAssertion(t)
+	a.IsTrue(httpRequestParseBoundary("multipart/byteranges") == "")
+	a.IsTrue(httpRequestParseBoundary("multipart/byteranges; boundary=123") == "123")
+	a.IsTrue(httpRequestParseBoundary("multipart/byteranges; boundary=123; 456") == "123")
+}
+
+func TestHTTPRequest_httpRequestParseRangeHeader(t *testing.T) {
+	var a = assert.NewAssertion(t)
 	{
-		_, ok := httpRequestParseContentRange("")
+		_, ok := httpRequestParseRangeHeader("")
 		a.IsFalse(ok)
 	}
 	{
-		_, ok := httpRequestParseContentRange("byte=")
+		_, ok := httpRequestParseRangeHeader("byte=")
 		a.IsFalse(ok)
 	}
 	{
-		_, ok := httpRequestParseContentRange("byte=")
+		_, ok := httpRequestParseRangeHeader("byte=")
 		a.IsFalse(ok)
 	}
 	{
-		set, ok := httpRequestParseContentRange("bytes=")
+		set, ok := httpRequestParseRangeHeader("bytes=")
 		a.IsTrue(ok)
 		a.IsTrue(len(set) == 0)
 	}
 	{
-		_, ok := httpRequestParseContentRange("bytes=60-50")
+		_, ok := httpRequestParseRangeHeader("bytes=60-50")
 		a.IsFalse(ok)
 	}
 	{
-		set, ok := httpRequestParseContentRange("bytes=0-50")
+		set, ok := httpRequestParseRangeHeader("bytes=0-50")
 		a.IsTrue(ok)
 		a.IsTrue(len(set) > 0)
 		t.Log(set)
 	}
 	{
-		set, ok := httpRequestParseContentRange("bytes=0-")
+		set, ok := httpRequestParseRangeHeader("bytes=0-")
+		a.IsTrue(ok)
+		a.IsTrue(len(set) > 0)
+		if len(set) > 0 {
+			a.IsTrue(set[0][0] == 0)
+		}
+		t.Log(set)
+	}
+	{
+		set, ok := httpRequestParseRangeHeader("bytes=-50")
 		a.IsTrue(ok)
 		a.IsTrue(len(set) > 0)
 		t.Log(set)
 	}
 	{
-		set, ok := httpRequestParseContentRange("bytes=-50")
+		set, ok := httpRequestParseRangeHeader("bytes=0-50, 60-100")
 		a.IsTrue(ok)
 		a.IsTrue(len(set) > 0)
 		t.Log(set)
 	}
+}
+
+func TestHTTPRequest_httpRequestParseContentRangeHeader(t *testing.T) {
 	{
-		set, ok := httpRequestParseContentRange("bytes=0-50, 60-100")
-		a.IsTrue(ok)
-		a.IsTrue(len(set) > 0)
-		t.Log(set)
+		var c1 = "bytes 0-100/*"
+		t.Log(httpRequestParseContentRangeHeader(c1))
+	}
+	{
+		var c1 = "bytes 30-100/*"
+		t.Log(httpRequestParseContentRangeHeader(c1))
+	}
+	{
+		var c1 = "bytes1 0-100/*"
+		t.Log(httpRequestParseContentRangeHeader(c1))
+	}
+}
+
+func BenchmarkHTTPRequest_httpRequestParseContentRangeHeader(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		var c1 = "bytes 0-100/*"
+		httpRequestParseContentRangeHeader(c1)
 	}
 }

--- a/internal/nodes/http_writer.go
+++ b/internal/nodes/http_writer.go
@@ -28,6 +28,7 @@ import (
 	"io/ioutil"
 	"net"
 	"net/http"
+	"net/textproto"
 	"os"
 	"path/filepath"
 	"strings"
@@ -45,6 +46,7 @@ const compressionCacheSuffix = "@GOEDGE_"

 // 缓存相关配置
 const cacheMethodSuffix = "@GOEDGE_"
+const cachePartialSuffix = "@GOEDGE_partial"

 func init() {
 	var systemMemory = utils.SystemMemoryGB() / 8
@@ -157,12 +159,21 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 	var addStatusHeader = this.req.web != nil && this.req.web.Cache != nil && this.req.web.Cache.AddStatusHeader

 	// 不支持Range
-	if this.StatusCode() == http.StatusPartialContent || len(this.Header().Get("Content-Range")) > 0 {
-		this.req.varMapping["cache.status"] = "BYPASS"
-		if addStatusHeader {
-			this.Header().Set("X-Cache", "BYPASS, not supported Content-Range")
+	if this.isPartial {
+		if !cacheRef.AllowPartialContent {
+			this.req.varMapping["cache.status"] = "BYPASS"
+			if addStatusHeader {
+				this.Header().Set("X-Cache", "BYPASS, not supported partial content")
+			}
+			return
+		}
+		if this.cacheStorage.Policy().Type != serverconfigs.CachePolicyStorageFile {
+			this.req.varMapping["cache.status"] = "BYPASS"
+			if addStatusHeader {
+				this.Header().Set("X-Cache", "BYPASS, not supported partial content in memory storage")
+			}
+			return
 		}
-		return
 	}

 	// 如果允许 ChunkedEncoding，就无需尺寸的判断，因为此时的 size 为 -1
@@ -183,7 +194,7 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 	}

 	// 检查状态
-	if len(cacheRef.Status) > 0 && !lists.ContainsInt(cacheRef.Status, this.StatusCode()) {
+	if !this.isPartial && len(cacheRef.Status) > 0 && !lists.ContainsInt(cacheRef.Status, this.StatusCode()) {
 		this.req.varMapping["cache.status"] = "BYPASS"
 		if addStatusHeader {
 			this.Header().Set("X-Cache", "BYPASS, Status: "+types.String(this.StatusCode()))
@@ -193,7 +204,7 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {

 	// Cache-Control
 	if len(cacheRef.SkipResponseCacheControlValues) > 0 {
-		var cacheControl = this.Header().Get("Cache-Control")
+		var cacheControl = this.GetHeader("Cache-Control")
 		if len(cacheControl) > 0 {
 			values := strings.Split(cacheControl, ",")
 			for _, value := range values {
@@ -209,7 +220,7 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 	}

 	// Set-Cookie
-	if cacheRef.SkipResponseSetCookie && len(this.Header().Get("Set-Cookie")) > 0 {
+	if cacheRef.SkipResponseSetCookie && len(this.GetHeader("Set-Cookie")) > 0 {
 		this.req.varMapping["cache.status"] = "BYPASS"
 		if addStatusHeader {
 			this.Header().Set("X-Cache", "BYPASS, Set-Cookie")
@@ -242,7 +253,7 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 	}

 	this.cacheStorage = storage
-	life := cacheRef.LifeSeconds()
+	var life = cacheRef.LifeSeconds()

 	if life <= 0 {
 		life = 60
@@ -250,7 +261,7 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {

 	// 支持源站设置的max-age
 	if this.req.web.Cache != nil && this.req.web.Cache.EnableCacheControlMaxAge {
-		var cacheControl = this.Header().Get("Cache-Control")
+		var cacheControl = this.GetHeader("Cache-Control")
 		var pieces = strings.Split(cacheControl, ";")
 		for _, piece := range pieces {
 			var eqIndex = strings.Index(piece, "=")
@@ -265,7 +276,10 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {

 	var expiredAt = utils.UnixTime() + life
 	var cacheKey = this.req.cacheKey
-	cacheWriter, err := storage.OpenWriter(cacheKey, expiredAt, this.StatusCode(), size, false)
+	if this.isPartial {
+		cacheKey += cachePartialSuffix
+	}
+	cacheWriter, err := storage.OpenWriter(cacheKey, expiredAt, this.StatusCode(), size, this.isPartial)
 	if err != nil {
 		if !caches.CanIgnoreErr(err) {
 			remotelogs.Error("HTTP_WRITER", "write cache failed: "+err.Error())
@@ -277,6 +291,9 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 	// 写入Header
 	for k, v := range this.Header() {
 		for _, v1 := range v {
+			if this.isPartial && k == "Content-Type" && strings.Contains(v1, "multipart/byteranges") {
+				continue
+			}
 			_, err = cacheWriter.WriteHeader([]byte(k + ":" + v1 + "\n"))
 			if err != nil {
 				remotelogs.Error("HTTP_WRITER", "write cache failed: "+err.Error())
@@ -287,6 +304,101 @@ func (this *HTTPWriter) PrepareCache(resp *http.Response, size int64) {
 		}
 	}

+	if this.isPartial {
+		// content-range
+		var contentRange = this.GetHeader("Content-Range")
+		if len(contentRange) > 0 {
+			var start = httpRequestParseContentRangeHeader(contentRange)
+			if start < 0 {
+				return
+			}
+			var filterReader = readers.NewFilterReaderCloser(resp.Body)
+			this.cacheIsFinished = true
+			var hasError = false
+			filterReader.Add(func(p []byte, err error) error {
+				if hasError {
+					return nil
+				}
+
+				var l = len(p)
+				if l == 0 {
+					return nil
+				}
+				defer func() {
+					start += int64(l)
+				}()
+				err = cacheWriter.WriteAt(start, p)
+				if err != nil {
+					this.cacheIsFinished = false
+					hasError = true
+				}
+				return nil
+			})
+			resp.Body = filterReader
+			this.rawReader = filterReader
+			return
+		}
+
+		// multipart/byteranges
+		var contentType = this.GetHeader("Content-Type")
+		if strings.Contains(contentType, "multipart/byteranges") {
+			partialWriter, ok := cacheWriter.(*caches.PartialFileWriter)
+			if !ok {
+				return
+			}
+
+			var boundary = httpRequestParseBoundary(contentType)
+			if len(boundary) == 0 {
+				return
+			}
+
+			var reader = readers.NewByteRangesReaderCloser(resp.Body, boundary)
+			var contentTypeWritten = false
+
+			this.cacheIsFinished = true
+			var hasError = false
+			var writtenTotal = false
+			reader.OnPartRead(func(start int64, end int64, total int64, data []byte, header textproto.MIMEHeader) {
+				if hasError {
+					return
+				}
+
+				// 写入total
+				if !writtenTotal && total > 0 {
+					partialWriter.SetBodyLength(total)
+					writtenTotal = true
+				}
+
+				// 写入Content-Type
+				if partialWriter.IsNew() && !contentTypeWritten {
+					var realContentType = header.Get("Content-Type")
+					if len(realContentType) > 0 {
+						var h = []byte("Content-Type:" + realContentType + "\n")
+						err = partialWriter.AppendHeader(h)
+						if err != nil {
+							hasError = true
+							this.cacheIsFinished = false
+							return
+						}
+					}
+
+					contentTypeWritten = true
+				}
+
+				err := cacheWriter.WriteAt(start, data)
+				if err != nil {
+					hasError = true
+					this.cacheIsFinished = false
+				}
+			})
+
+			resp.Body = reader
+			this.rawReader = reader
+		}
+
+		return
+	}
+
 	var cacheReader = readers.NewTeeReaderCloser(resp.Body, this.cacheWriter)
 	resp.Body = cacheReader
 	this.rawReader = cacheReader
@@ -306,7 +418,7 @@ func (this *HTTPWriter) PrepareWebP(resp *http.Response, size int64) {
 		return
 	}

-	var contentType = this.Header().Get("Content-Type")
+	var contentType = this.GetHeader("Content-Type")

 	if this.req.web != nil &&
 		this.req.web.WebP != nil &&
@@ -324,7 +436,7 @@ func (this *HTTPWriter) PrepareWebP(resp *http.Response, size int64) {
 			return
 		}

-		var contentEncoding = this.Header().Get("Content-Encoding")
+		var contentEncoding = this.GetHeader("Content-Encoding")
 		switch contentEncoding {
 		case "gzip", "deflate", "br":
 			reader, err := compressions.NewReader(resp.Body, contentEncoding)
@@ -361,7 +473,7 @@ func (this *HTTPWriter) PrepareCompression(resp *http.Response, size int64) {
 	}

 	var acceptEncodings = this.req.RawReq.Header.Get("Accept-Encoding")
-	var contentEncoding = this.Header().Get("Content-Encoding")
+	var contentEncoding = this.GetHeader("Content-Encoding")

 	if this.compressionConfig == nil || !this.compressionConfig.IsOn {
 		if lists.ContainsString([]string{"gzip", "deflate", "br"}, contentEncoding) && !httpAcceptEncoding(acceptEncodings, contentEncoding) {
@@ -386,7 +498,7 @@ func (this *HTTPWriter) PrepareCompression(resp *http.Response, size int64) {
 	}

 	// 尺寸和类型
-	var contentType = this.Header().Get("Content-Type")
+	var contentType = this.GetHeader("Content-Type")
 	if !this.compressionConfig.MatchResponse(contentType, size, filepath.Ext(this.req.Path()), this.req.Format) {
 		return
 	}
@@ -504,6 +616,11 @@ func (this *HTTPWriter) Header() http.Header {
 	return this.rawWriter.Header()
 }

+// GetHeader 读取Header值
+func (this *HTTPWriter) GetHeader(name string) string {
+	return this.Header().Get(name)
+}
+
 // DeleteHeader 删除Header
 func (this *HTTPWriter) DeleteHeader(name string) {
 	this.rawWriter.Header().Del(name)
@@ -777,18 +894,19 @@ func (this *HTTPWriter) Close() {
 		if this.isOk && this.cacheIsFinished {
 			// 对比缓存前后的Content-Length
 			var method = this.req.Method()
-			if method != http.MethodHead && this.StatusCode() != http.StatusNoContent {
-				var contentLengthString = this.Header().Get("Content-Length")
+			if method != http.MethodHead && this.StatusCode() != http.StatusNoContent && !this.isPartial {
+				var contentLengthString = this.GetHeader("Content-Length")
 				if len(contentLengthString) > 0 {
 					var contentLength = types.Int64(contentLengthString)
 					if contentLength != this.cacheWriter.BodySize() {
 						this.isOk = false
 						_ = this.cacheWriter.Discard()
+						this.cacheWriter = nil
 					}
 				}
 			}

-			if this.isOk {
+			if this.isOk && this.cacheWriter != nil {
 				err := this.cacheWriter.Close()
 				if err == nil {
 					var expiredAt = this.cacheWriter.ExpiredAt()
@@ -863,7 +981,7 @@ func (this *HTTPWriter) calculateStaleLife() int {
 		// 从Header中读取stale-if-error
 		var isDefinedInHeader = false
 		if staleConfig.SupportStaleIfErrorHeader {
-			var cacheControl = this.Header().Get("Cache-Control")
+			var cacheControl = this.GetHeader("Cache-Control")
 			var pieces = strings.Split(cacheControl, ",")
 			for _, piece := range pieces {
 				var eqIndex = strings.Index(piece, "=")