添加 github.com/pion/dtls 代码

dtls-2.0.9/pkg/protocol/application_data.go

@@ -0,0 +1,26 @@
+package protocol
+
+// ApplicationData messages are carried by the record layer and are
+// fragmented, compressed, and encrypted based on the current connection
+// state.  The messages are treated as transparent data to the record
+// layer.
+// https://tools.ietf.org/html/rfc5246#section-10
+type ApplicationData struct {
+	Data []byte
+}
+
+// ContentType returns the ContentType of this content
+func (a ApplicationData) ContentType() ContentType {
+	return ContentTypeApplicationData
+}
+
+// Marshal encodes the ApplicationData to binary
+func (a *ApplicationData) Marshal() ([]byte, error) {
+	return append([]byte{}, a.Data...), nil
+}
+
+// Unmarshal populates the ApplicationData from binary
+func (a *ApplicationData) Unmarshal(data []byte) error {
+	a.Data = append([]byte{}, data...)
+	return nil
+}