Fixed a memory leak in wxTCPServer

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@6894 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/ipcbase.h

@@ -48,6 +48,7 @@ class WXDLLEXPORT wxClientBase;
 class WXDLLEXPORT wxConnectionBase: public wxObject
 {
   DECLARE_CLASS(wxConnectionBase)
+
 public:
   inline wxConnectionBase(void) {}
   inline ~wxConnectionBase(void) {}
@@ -102,8 +103,7 @@ class WXDLLEXPORT wxConnectionBase: public wxObject
                                wxIPCFormat WXUNUSED(format) )
                              { return FALSE; };
 
-  // Callbacks to BOTH
-
+  // Callbacks to BOTH - override at will
   // Default behaviour is to delete connection and return TRUE
   virtual bool OnDisconnect(void) = 0;
 };
@@ -111,28 +111,35 @@ class WXDLLEXPORT wxConnectionBase: public wxObject
 class WXDLLEXPORT wxServerBase: public wxObject
 {
   DECLARE_CLASS(wxServerBase)
- public:
 
+public:
   inline wxServerBase(void) {}
   inline ~wxServerBase(void) {};
-  virtual bool Create(const wxString& serverName) = 0; // Returns FALSE if can't create server (e.g. port
-                                  // number is already in use)
-  virtual wxConnectionBase *OnAcceptConnection(const wxString& topic) = 0;
 
+  // Returns FALSE on error (e.g. port number is already in use)
+  virtual bool Create(const wxString& serverName) = 0;
+
+  // Callbacks to SERVER - override at will
+  virtual wxConnectionBase *OnAcceptConnection(const wxString& topic) = 0;
 };
 
 class WXDLLEXPORT wxClientBase: public wxObject
 {
   DECLARE_CLASS(wxClientBase)
+
 public:
   inline wxClientBase(void) {};
   inline ~wxClientBase(void) {};
-  virtual bool ValidHost(const wxString& host) = 0;
-  virtual wxConnectionBase *MakeConnection(const wxString& host, const wxString& server, const wxString& topic) = 0;
-                                                // Call this to make a connection.
-                                                // Returns NULL if cannot.
-  virtual wxConnectionBase *OnMakeConnection(void) = 0; // Tailor this to return own connection.
 
+  virtual bool ValidHost(const wxString& host) = 0;
+
+  // Call this to make a connection. Returns NULL if cannot.
+  virtual wxConnectionBase *MakeConnection(const wxString& host,
+                                           const wxString& server,
+                                           const wxString& topic) = 0;
+
+  // Callbacks to CLIENT - override at will
+  virtual wxConnectionBase *OnMakeConnection(void) = 0;
 };
 
 #endif

include/wx/sckipc.h

@@ -59,6 +59,7 @@ class WXDLLEXPORT wxTCPClient;
 class WXDLLEXPORT wxTCPConnection: public wxConnectionBase
 {
   DECLARE_DYNAMIC_CLASS(wxTCPConnection)
+
 public:
   wxTCPConnection(char *buffer, int size);
   wxTCPConnection();
@@ -77,10 +78,11 @@ public:
   // Calls that both can make
   virtual bool Disconnect(void);
 
+  // Callbacks to BOTH - override at will
   // Default behaviour is to delete connection and return TRUE
   virtual bool OnDisconnect(void) { delete this; return TRUE; }
 
-  // To enable the compressor
+  // To enable the compressor (NOTE: not implemented!)
   void Compress(bool on);
 
 protected:
@@ -112,9 +114,14 @@ public:
   wxTCPServer();
   virtual ~wxTCPServer();
 
-  // Returns FALSE if can't create server (e.g. port number is already in use)
-  virtual bool Create(const wxString& server_name);
+  // Returns FALSE on error (e.g. port number is already in use)
+  virtual bool Create(const wxString& serverName);
+
+  // Callbacks to SERVER - override at will
   virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
+
+protected:
+  wxSocketServer *m_server;
 };
 
 class wxTCPClient: public wxClientBase
@@ -126,13 +133,13 @@ public:
   virtual ~wxTCPClient();
 
   virtual bool ValidHost(const wxString& host);
-  // Call this to make a connection.
-  // Returns NULL if cannot.
+
+  // Call this to make a connection. Returns NULL if cannot.
   virtual wxConnectionBase *MakeConnection(const wxString& host,
                                            const wxString& server,
                                            const wxString& topic);
 
-  // Tailor this to return own connection.
+  // Callbacks to CLIENT - override at will
   virtual wxConnectionBase *OnMakeConnection();
 };
 

src/common/sckipc.cpp

@@ -200,28 +200,51 @@ wxConnectionBase *wxTCPClient::OnMakeConnection()
 
 wxTCPServer::wxTCPServer () : wxServerBase()
 {
+  m_server = NULL;
 }
 
-bool wxTCPServer::Create(const wxString& server_name)
+bool wxTCPServer::Create(const wxString& serverName)
 {
-  wxSocketServer *server;
+  // Destroy previous server, if any
+  if (m_server)
+  {
+    m_server->SetClientData(NULL);
+    m_server->Destroy();
+    m_server = NULL;
+  }
 
   // wxIPV4address defaults to INADDR_ANY:0
   wxIPV4address addr;
-  addr.Service(server_name);
+  addr.Service(serverName);
 
-  // Create a socket listening on specified port
-  server = new wxSocketServer(addr, SCKIPC_FLAGS);
-  server->SetEventHandler(*gs_handler, _SERVER_ONREQUEST_ID);
-  server->SetClientData(this);
-  server->SetNotify(wxSOCKET_CONNECTION_FLAG);
-  server->Notify(TRUE);
+  // Create a socket listening on the specified port
+  m_server = new wxSocketServer(addr, SCKIPC_FLAGS);
+
+  if (m_server->Ok())
+  {
+    m_server->SetEventHandler(*gs_handler, _SERVER_ONREQUEST_ID);
+    m_server->SetClientData(this);
+    m_server->SetNotify(wxSOCKET_CONNECTION_FLAG);
+    m_server->Notify(TRUE);
 
     return TRUE;
   }
+  else
+  {
+    m_server->Destroy();
+    m_server = NULL;
+
+    return FALSE;
+  }
+}
 
 wxTCPServer::~wxTCPServer()
 {
+  if (m_server)
+  {
+    m_server->SetClientData(NULL);
+    m_server->Destroy();
+  }
 }
 
 wxConnectionBase *wxTCPServer::OnAcceptConnection( const wxString& WXUNUSED(topic) )
@@ -555,7 +578,7 @@ void wxTCPEventHandler::Client_OnRequest(wxSocketEvent &event)
 void wxTCPEventHandler::Server_OnRequest(wxSocketEvent &event)
 {
   wxSocketServer *server = (wxSocketServer *) event.GetSocket();
-  wxTCPServer *ipcserv = (wxTCPServer *) event.GetClientData();
+  wxTCPServer *ipcserv = (wxTCPServer *) server->GetClientData();
 
   // This socket is being deleted; skip this event
   if (!ipcserv)