优化代码

internal/compressions/utils.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"github.com/TeaOSLab/EdgeCommon/pkg/serverconfigs"
 	"io"
+	"net/http"
 )
 
 type ContentEncoding = string
@@ -58,3 +59,32 @@ func NewWriter(writer io.Writer, compressType serverconfigs.HTTPCompressionType,
 	}
 	return nil, errors.New("invalid compression type '" + compressType + "'")
 }
+
+// SupportEncoding 检查是否支持某个编码
+func SupportEncoding(encoding string) bool {
+	return encoding == ContentEncodingBr ||
+		encoding == ContentEncodingGzip ||
+		encoding == ContentEncodingDeflate ||
+		encoding == ContentEncodingZSTD
+}
+
+// WrapHTTPResponse 包装http.Response对象
+func WrapHTTPResponse(resp *http.Response) {
+	if resp == nil {
+		return
+	}
+
+	var contentEncoding = resp.Header.Get("Content-Encoding")
+	if len(contentEncoding) == 0 || !SupportEncoding(contentEncoding) {
+		return
+	}
+
+	reader, err := NewReader(resp.Body, contentEncoding)
+	if err != nil {
+		// unable to decode, we ignore the error
+		return
+	}
+	resp.Header.Del("Content-Encoding")
+	resp.Header.Del("Content-Length")
+	resp.Body = reader
+}