Rework XDR encoding

protocol/message_types.go

@@ -0,0 +1,35 @@
+package protocol
+
+type IndexMessage struct {
+	Repository string     // max:64
+	Files      []FileInfo // max:100000
+}
+
+type FileInfo struct {
+	Name     string // max:1024
+	Flags    uint32
+	Modified int64
+	Version  uint32
+	Blocks   []BlockInfo // max:100000
+}
+
+type BlockInfo struct {
+	Size uint32
+	Hash []byte // max:64
+}
+
+type RequestMessage struct {
+	Repository string // max:64
+	Name       string // max:1024
+	Offset     uint64
+	Size       uint32
+}
+
+type OptionsMessage struct {
+	Options []Option // max:64
+}
+
+type Option struct {
+	Key   string // max:64
+	Value string // max:1024
+}