lib/http: add function to parse multipart Range response for Client

The ParseMultipartRange parse the multipart/byteranges body or response
from HTTP Range request.
Each Content-Range position and body part in the multipart will be stored
under RangePosition.

3 files changed, 47 insertions, 0 deletions

diff --git a/lib/http/testdata/range/invalid_boundary_test.txt b/lib/http/testdata/range/invalid_boundary_test.txt
new file mode 100644
index 00000000..7fa7fdbb
--- /dev/null
+++ b/lib/http/testdata/range/invalid_boundary_test.txt
@@ -0,0 +1,16 @@
+>>> body
+--zxcv
+Content-Range: bytes 0-6/50
+
+
+--zxcv --
+Content-Range: bytes 0-6/50
+
+
+
+<<< error
+ParseMultipartRange: on NextPart: multipart: expecting a new Part; got line "--zxcv --\r\n"
+
+<<< expected
+
+<<< END
diff --git a/lib/http/testdata/range/missing_last_boundary_test.txt b/lib/http/testdata/range/missing_last_boundary_test.txt
new file mode 100644
index 00000000..8388f517
--- /dev/null
+++ b/lib/http/testdata/range/missing_last_boundary_test.txt
@@ -0,0 +1,12 @@
+>>> body
+--zxcv
+Content-Range: bytes 10-15/50
+
+Part 1
+
+<<< error
+ParseMultipartRange: on ReadAll part: unexpected EOF
+
+<<< expected
+
+<<< END
diff --git a/lib/http/testdata/range/ok_test.txt b/lib/http/testdata/range/ok_test.txt
new file mode 100644
index 00000000..3e1f22d9
--- /dev/null
+++ b/lib/http/testdata/range/ok_test.txt
@@ -0,0 +1,19 @@
+>>> body
+--zxcv
+Content-Range: bytes 10-15/50
+
+Part 1
+--zxcv
+Content-Range: bytes 20-25/50
+
+Part 2
+--zxcv--
+
+<<< error
+
+<<< expected
+10-15: Part 1
+20-25: Part 2
+
+
+<<< END