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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,83 @@ | ||
| package traffic | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "compress/gzip" | ||
| "io" | ||
| "net/http" | ||
| "net/url" | ||
| ) | ||
|
|
||
| // GetBodyReader checks if the request Content-Encoding or request query parameter indicates gzip compression. | ||
| func GetContentEncoding(request *http.Request) (string, error) { | ||
| queryParams, err := url.ParseQuery(request.URL.RawQuery) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| encoding := queryParams.Get("ContentEncoding") | ||
| if encoding == "" { | ||
| encoding = request.Header.Get("Content-Encoding") | ||
| } | ||
| return encoding, nil | ||
| } | ||
|
|
||
| // WrapReader checks if the request Content-Encoding or request query parameter indicates gzip compression. | ||
| // If so, it returns a gzip.Reader that decompresses the content. | ||
| func GetBodyReader(request *http.Request) (io.ReadCloser, error) { | ||
| func WrapReader(request *http.Request, encoding string) (io.ReadCloser, error) { | ||
| if request.Body == nil || request.Body == http.NoBody { | ||
| return nil, nil | ||
| } | ||
|
|
||
| queryParams, err := url.ParseQuery(request.URL.RawQuery) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if request.Header.Get("Content-Encoding") == "gzip" || queryParams.Get("ContentEncoding") == "gzip" { | ||
| switch encoding { | ||
| case "gzip": | ||
| // Create a new gzip.Reader to decompress the request body | ||
| return gzip.NewReader(request.Body) | ||
| default: | ||
| // If the content is not gzip-compressed, return the original request body | ||
| return request.Body, nil | ||
| } | ||
| } | ||
|
|
||
| func EncodeData(data []byte, encoding string) ([]byte, error) { | ||
| switch encoding { | ||
| case "gzip": | ||
| var buf bytes.Buffer | ||
| gz := gzip.NewWriter(&buf) | ||
|
|
||
| _, err := gz.Write(data) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| err = gz.Close() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| compressedData := buf.Bytes() | ||
| return compressedData, nil | ||
| default: | ||
| // identity encoding | ||
| return data, nil | ||
| } | ||
| } | ||
|
|
||
| func DecodeData(data []byte, encoding string) ([]byte, error) { | ||
| switch encoding { | ||
| case "gzip": | ||
| reader, err := gzip.NewReader(bytes.NewReader(data)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // If the content is not gzip-compressed, return the original request body | ||
| return request.Body, nil | ||
| decodedData, err := io.ReadAll(reader) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return decodedData, nil | ||
| default: | ||
| // identity encoding | ||
| return data, nil | ||
| } | ||
| } |