1 files changed, 109 insertions, 0 deletions

diff --git a/src/OSSupport/ServerHandleImpl.h b/src/OSSupport/ServerHandleImpl.h
new file mode 100644
index 000000000..b325a0f37
--- /dev/null
+++ b/src/OSSupport/ServerHandleImpl.h
@@ -0,0 +1,109 @@
+
+// ServerHandleImpl.h
+
+// Declares the cServerHandleImpl class implementing the TCP server functionality
+
+// This is an internal header, no-one outside OSSupport should need to include it; use Network.h instead
+
+
+
+
+
+#pragma once
+
+#include "Network.h"
+#include <event2/listener.h>
+#include "CriticalSection.h"
+
+
+
+
+
+// fwd:
+class cTCPLinkImpl;
+typedef SharedPtr<cTCPLinkImpl> cTCPLinkImplPtr;
+typedef std::vector<cTCPLinkImplPtr> cTCPLinkImplPtrs;
+class cServerHandleImpl;
+typedef SharedPtr<cServerHandleImpl> cServerHandleImplPtr;
+typedef std::vector<cServerHandleImplPtr> cServerHandleImplPtrs;
+
+
+
+
+
+class cServerHandleImpl:
+	public cServerHandle
+{
+	typedef cServerHandle super;
+	friend class cTCPLinkImpl;
+
+public:
+	/** Closes the server, dropping all the connections. */
+	~cServerHandleImpl();
+
+	/** Creates a new server instance listening on the specified port.
+	Both IPv4 and IPv6 interfaces are used, if possible.
+	Always returns a server instance; in the event of a failure, the instance holds the error details. Use IsListening() to query success. */
+	static cServerHandleImplPtr Listen(
+		UInt16 a_Port,
+		cNetwork::cListenCallbacksPtr a_ListenCallbacks,
+		cTCPLink::cCallbacksPtr a_LinkCallbacks
+	);
+
+	// cServerHandle overrides:
+	virtual void Close(void) override;
+	virtual bool IsListening(void) const override { return m_IsListening; }
+
+protected:
+	/** The callbacks used to notify about incoming connections. */
+	cNetwork::cListenCallbacksPtr m_ListenCallbacks;
+
+	/** The callbacks used to create new cTCPLink instances for incoming connections. */
+	cTCPLink::cCallbacksPtr m_LinkCallbacks;
+
+	/** The LibEvent handle representing the main listening socket. */
+	evconnlistener * m_ConnListener;
+
+	/** The LibEvent handle representing the secondary listening socket (only when side-by-side listening is needed, such as WinXP). */
+	evconnlistener * m_SecondaryConnListener;
+
+	/** Set to true when the server is initialized successfully and is listening for incoming connections. */
+	bool m_IsListening;
+
+	/** Container for all currently active connections on this server. */
+	cTCPLinkImplPtrs m_Connections;
+
+	/** Mutex protecting m_Connections againt multithreaded access. */
+	cCriticalSection m_CS;
+
+	/** Contains the error code for the failure to listen. Only valid for non-listening instances. */
+	int m_ErrorCode;
+
+	/** Contains the error message for the failure to listen. Only valid for non-listening instances. */
+	AString m_ErrorMsg;
+
+
+
+	/** Creates a new instance with the specified callbacks.
+	Initializes the internals, but doesn't start listening yet. */
+	cServerHandleImpl(
+		cNetwork::cListenCallbacksPtr a_ListenCallbacks,
+		cTCPLink::cCallbacksPtr a_LinkCallbacks
+	);
+
+	/** Starts listening on the specified port.
+	Returns true if successful, false on failure. On failure, sets m_ErrorCode and m_ErrorMsg. */
+	bool Listen(UInt16 a_Port);
+
+	/** The callback called by LibEvent upon incoming connection. */
+	static void Callback(evconnlistener * a_Listener, evutil_socket_t a_Socket, sockaddr * a_Addr, int a_Len, void * a_Self);
+
+	/** Removes the specified link from m_Connections.
+	Called by cTCPLinkImpl when the link is terminated. */
+	void RemoveLink(const cTCPLinkImpl * a_Link);
+};
+
+
+
+
+