| 103 | } |
| 104 | |
| 105 | func parseRangeHeader(opts *blob.DownloadStreamOptions, reqHeader http.Header) (bool, error) { |
| 106 | r := reqHeader.Get(httpheaders.Range) |
| 107 | if len(r) == 0 { |
| 108 | return false, nil |
| 109 | } |
| 110 | |
| 111 | start, end, err := httprange.Parse(r) |
| 112 | if err != nil { |
| 113 | return false, err |
| 114 | } |
| 115 | |
| 116 | if end == 0 { |
| 117 | return false, nil |
| 118 | } |
| 119 | |
| 120 | length := end - start + 1 |
| 121 | if end <= 0 { |
| 122 | length = blockblob.CountToEnd |
| 123 | } |
| 124 | |
| 125 | opts.Range = blob.HTTPRange{ |
| 126 | Offset: start, |
| 127 | Count: length, |
| 128 | } |
| 129 | |
| 130 | return true, nil |
| 131 | } |