1 files changed, 99 insertions, 0 deletions
diff --git a/vendor/github.com/pion/sctp/chunk_reconfig.go b/vendor/github.com/pion/sctp/chunk_reconfig.go
new file mode 100644
index 0000000..a53ad5e
--- /dev/null
+++ b/vendor/github.com/pion/sctp/chunk_reconfig.go
@@ -0,0 +1,99 @@
+package sctp
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+)
+
+// https://tools.ietf.org/html/rfc6525#section-3.1
+// chunkReconfig represents an SCTP Chunk used to reconfigure streams.
+//
+//  0                   1                   2                   3
+//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// | Type = 130    |  Chunk Flags  |      Chunk Length             |
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// \                                                               \
+// /                  Re-configuration Parameter                   /
+// \                                                               \
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+// \                                                               \
+// /             Re-configuration Parameter (optional)             /
+// \                                                               \
+// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+type chunkReconfig struct {
+	chunkHeader
+	paramA param
+	paramB param
+}
+
+func (c *chunkReconfig) unmarshal(raw []byte) error {
+	if err := c.chunkHeader.unmarshal(raw); err != nil {
+		return err
+	}
+	pType, err := parseParamType(c.raw)
+	if err != nil {
+		return errors.Wrap(err, "failed to parse param type")
+	}
+	a, err := buildParam(pType, c.raw)
+	if err != nil {
+		return err
+	}
+	c.paramA = a
+
+	padding := getPadding(a.length())
+	offset := a.length() + padding
+	if len(c.raw) > offset {
+		pType, err := parseParamType(c.raw[offset:])
+		if err != nil {
+			return errors.Wrap(err, "failed to parse param type")
+		}
+		b, err := buildParam(pType, c.raw[offset:])
+		if err != nil {
+			return err
+		}
+		c.paramB = b
+	}
+
+	return nil
+}
+
+func (c *chunkReconfig) marshal() ([]byte, error) {
+	out, err := c.paramA.marshal()
+	if err != nil {
+		return nil, errors.Wrap(err, "Unable to marshal parameter A for reconfig")
+	}
+	if c.paramB != nil {
+		// Pad param A
+		out = padByte(out, getPadding(len(out)))
+
+		outB, err := c.paramB.marshal()
+		if err != nil {
+			return nil, errors.Wrap(err, "Unable to marshal parameter B for reconfig")
+		}
+
+		out = append(out, outB...)
+	}
+
+	c.typ = ctReconfig
+	c.raw = out
+	return c.chunkHeader.marshal()
+}
+
+func (c *chunkReconfig) check() (abort bool, err error) {
+	// nolint:godox
+	// TODO: check allowed combinations:
+	// https://tools.ietf.org/html/rfc6525#section-3.1
+	return true, nil
+}
+
+// String makes chunkReconfig printable
+func (c *chunkReconfig) String() string {
+	res := fmt.Sprintf("Param A:\n %s", c.paramA)
+	if c.paramB != nil {
+		res += fmt.Sprintf("Param B:\n %s", c.paramB)
+	}
+	return res
+}