Temporarily add go-agentx (w/ fixes to lexico ordering)

go-agentx/pdu/close.go

@@ -0,0 +1,26 @@
+// Copyright 2018 The agentx authors
+// Licensed under the LGPLv3 with static-linking exception.
+// See LICENCE file for details.
+
+package pdu
+
+// Close defines the pdu close packet.
+type Close struct {
+	Reason Reason
+}
+
+// Type returns the pdu packet type.
+func (c *Close) Type() Type {
+	return TypeClose
+}
+
+// MarshalBinary returns the pdu packet as a slice of bytes.
+func (c *Close) MarshalBinary() ([]byte, error) {
+	return []byte{byte(c.Reason), 0x00, 0x00, 0x00}, nil
+}
+
+// UnmarshalBinary sets the packet structure from the provided slice of bytes.
+func (c *Close) UnmarshalBinary(data []byte) error {
+	c.Reason = Reason(data[0])
+	return nil
+}