From 0a195e7bc0e23a5a7978a75befe8843d6e69aecd Mon Sep 17 00:00:00 2001
From: Adam Ierymenko <adam.ierymenko@gmail.com>
Date: Wed, 22 Oct 2014 09:52:29 -0700
Subject: Some work on simulated net...

---
 testnet/SimNetSocketManager.hpp | 87 +++++++++++++++++++++++++++++++++--------
 1 file changed, 71 insertions(+), 16 deletions(-)

(limited to 'testnet/SimNetSocketManager.hpp')

diff --git a/testnet/SimNetSocketManager.hpp b/testnet/SimNetSocketManager.hpp
index 22fb4753..031cbd0c 100644
--- a/testnet/SimNetSocketManager.hpp
+++ b/testnet/SimNetSocketManager.hpp
@@ -28,43 +28,98 @@
 #ifndef ZT_SIMNETSOCKETMANAGER_HPP
 #define ZT_SIMNETSOCKETMANAGER_HPP
 
-#include <stdio.h>
-#include <stdlib.h>
-
 #include <map>
-#include <stdexcept>
+#include <utility>
+#include <queue>
 
 #include "Constants.hpp"
 #include "../node/SocketManager.hpp"
+#include "../node/Mutex.hpp"
+#include "../node/Condition.hpp"
 
 namespace ZeroTier {
 
+class SimNet;
+
 /**
- * Socket I/O implementation
+ * Socket manager for an IP endpoint in a simulated network
  */
 class SimNetSocketManager : public SocketManager
 {
+	friend class SimNet;
+
 public:
+	struct TransferStats
+	{
+		TransferStats() : received(0),sent(0) {}
+		unsigned long long received;
+		unsigned long long sent;
+	};
+
 	SimNetSocketManager();
 	virtual ~SimNetSocketManager();
 
-	virtual bool send(
-		const InetAddress &to,
-		bool tcp,
-		bool autoConnectTcp,
-		const void *msg,
-		unsigned int msglen);
+	/**
+	 * @return IP address of this simulated endpoint
+	 */
+	inline const InetAddress &address() const { return _address; }
 
-	virtual void poll(
-		unsigned long timeout,
-		void (*handler)(const SharedPtr<Socket> &,void *,const InetAddress &,Buffer<ZT_SOCKET_MAX_MESSAGE_LEN> &),
-		void *arg);
+	/**
+	 * @return Local endpoint stats
+	 */
+	inline const TransferStats &totals() const { return _totals; }
 
-	virtual void whack();
+	/**
+	 * @param peer Peer IP address
+	 * @return Transfer stats for this peer
+	 */
+	inline TransferStats stats(const InetAddress &peer) const
+	{
+		Mutex::Lock _l(_stats_m);
+		return _stats[peer];
+	}
+
+	/**
+	 * @return Network to which this endpoint belongs
+	 */
+	inline SimNet *net() const { return _sn; }
 
+	/**
+	 * Enqueue data from another endpoint to be picked up on next poll()
+	 *
+	 * @param from Originating endpoint address
+	 * @param data Data
+	 * @param len Length of data in bytes
+	 */
+	inline void enqueue(const InetAddress &from,const void *data,unsigned int len)
+	{
+		{
+			Mutex::Lock _l(_inbox_m);
+			_inbox.push(std::pair< InetAddress,Buffer<ZT_SOCKET_MAX_MESSAGE_LEN> >(from,Buffer<ZT_SOCKET_MAX_MESSAGE_LEN>(data,len)));
+		}
+		_waitCond.signal();
+	}
+
+	virtual bool send(const InetAddress &to,bool tcp,bool autoConnectTcp,const void *msg,unsigned int msglen);
+	virtual void poll(unsigned long timeout,void (*handler)(const SharedPtr<Socket> &,void *,const InetAddress &,Buffer<ZT_SOCKET_MAX_MESSAGE_LEN> &),void *arg);
+	virtual void whack();
 	virtual void closeTcpSockets();
 
 private:
+	// These are set by SimNet after object creation
+	SimNet *_sn;
+	InetAddress _address;
+
+	SharedPtr<Socket> _mySocket;
+	TransferStats _totals;
+
+	std::queue< std::pair< InetAddress,Buffer<ZT_SOCKET_MAX_MESSAGE_LEN> > > _inbox;
+	Mutex _inbox_m;
+
+	std::map< InetAddress,TransferStats > _stats;
+	Mutex _stats_m;
+
+	Condition _waitCond;
 };
 
 } // namespace ZeroTier
-- 
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