Network cleanup (#6302)

* Cleanup network headers

* Move peerhandler to a specific header to reduce compilation times
* Move socket.cpp/h to network folder

* More work

* Network code cleanups

* Move socket.{cpp,h} to network folder
* Move Address object to network/address.{cpp,h}
* Move network exceptions to network/networkexceptions.h
* Client: use unique_ptr for Connection
* Server/ClientIface: use shared_ptr for Connection

* Format fixes

* Remove socket.cpp socket.h from clang-format whitelist

* Also fix NetworkPacket code style & make it under clang-format

1 files changed, 73 insertions, 0 deletions

diff --git a/src/network/peerhandler.h b/src/network/peerhandler.h
new file mode 100644
index 000000000..b7ac9d64d
--- /dev/null
+++ b/src/network/peerhandler.h
@@ -0,0 +1,73 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+namespace con
+{
+
+typedef enum {
+	MIN_RTT,
+	MAX_RTT,
+	AVG_RTT,
+	MIN_JITTER,
+	MAX_JITTER,
+	AVG_JITTER
+} rtt_stat_type;
+
+class Peer;
+
+class PeerHandler
+{
+public:
+	PeerHandler() = default;
+
+	virtual ~PeerHandler() = default;
+
+	/*
+		This is called after the Peer has been inserted into the
+		Connection's peer container.
+	*/
+	virtual void peerAdded(Peer *peer) = 0;
+
+	/*
+		This is called before the Peer has been removed from the
+		Connection's peer container.
+	*/
+	virtual void deletingPeer(Peer *peer, bool timeout) = 0;
+};
+
+enum PeerChangeType
+{
+	PEER_ADDED,
+	PEER_REMOVED
+};
+struct PeerChange
+{
+	PeerChange(PeerChangeType t, u16 _peer_id, bool _timeout)
+	    : type(t), peer_id(_peer_id), timeout(_timeout)
+	{
+	}
+	PeerChange() = delete;
+
+	PeerChangeType type;
+	u16 peer_id;
+	bool timeout;
+};
+}