// Name: server.cpp
// Purpose: IPC sample: server
// Author: Julian Smart
-// Modified by:
+// Modified by: Jurgen Doornik
// Created: 25/01/99
-// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// Settings common to both executables: determines whether
// we're using TCP/IP or real DDE.
-#include "ddesetup.h"
+#include "ipcsetup.h"
-#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
- #include "mondrian.xpm"
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+ #include "../sample.xpm"
#endif
#include "server.h"
+#include "wx/textdlg.h"
+#include "wx/datetime.h"
// ----------------------------------------------------------------------------
// wxWin macros
IMPLEMENT_APP(MyApp)
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
- EVT_MENU (SERVER_EXIT, MyFrame::OnExit)
- EVT_LISTBOX(SERVER_LISTBOX, MyFrame::OnListBoxClick)
-END_EVENT_TABLE()
+ EVT_CLOSE( MyFrame::OnClose )
-BEGIN_EVENT_TABLE(IPCDialogBox, wxDialog)
- EVT_BUTTON(SERVER_QUIT_BUTTON, IPCDialogBox::OnQuit)
+ EVT_BUTTON( ID_START, MyFrame::OnStart )
+ EVT_CHOICE( ID_SERVERNAME, MyFrame::OnServerName )
+ EVT_BUTTON( ID_DISCONNECT, MyFrame::OnDisconnect )
+ EVT_BUTTON( ID_ADVISE, MyFrame::OnAdvise )
END_EVENT_TABLE()
-// ----------------------------------------------------------------------------
-// global variables
-// ----------------------------------------------------------------------------
-
-MyConnection *the_connection = NULL;
// ============================================================================
// implementation
bool MyApp::OnInit()
{
- // Create the main frame window
- (new MyFrame(NULL, _T("Server")))->Show(true);
-
- // service name (DDE classes) or port number (TCP/IP based classes)
- wxString service = IPC_SERVICE;
+ if ( !wxApp::OnInit() )
+ return false;
- if (argc > 1)
- service = argv[1];
-
- // Create a new server
- m_server = new MyServer;
- m_server->Create(service);
+ // Create the main frame window
+ m_frame = new MyFrame(NULL, "Server");
+ m_frame->Show(true);
return true;
}
-int MyApp::OnExit()
-{
- delete m_server;
-
- return 0;
-}
-
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------
// Define my frame constructor
MyFrame::MyFrame(wxFrame *frame, const wxString& title)
- : wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(350, 250))
+ : wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(400, 300))
{
+#if wxUSE_STATUSBAR
CreateStatusBar();
+#endif // wxUSE_STATUSBAR
+
+ SetIcon(wxICON(sample));
+
+ m_server = NULL;
+
+ wxPanel * const panel = new wxPanel(this);
+
+ wxBoxSizer * const sizerMain = new wxBoxSizer( wxVERTICAL );
+
+ wxFlexGridSizer * const sizerCmds = new wxFlexGridSizer( 2, 0, 0 );
+ sizerCmds->AddGrowableCol( 1 );
+
+ wxButton *btn;
+
+ btn = new wxButton(panel, ID_START, "&Start Server");
+ sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
- // Give it an icon
- SetIcon(wxICON(mondrian));
+ const wxString choices[] = { IPC_SERVICE, "..." };
+ wxChoice * const choice = new wxChoice
+ (
+ panel,
+ ID_SERVERNAME,
+ wxDefaultPosition, wxSize(100, -1),
+ WXSIZEOF(choices), choices
+ );
+ sizerCmds->Add(choice, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
- // Make a menubar
- wxMenu *file_menu = new wxMenu;
+ btn = new wxButton(panel, ID_DISCONNECT, "&Disconnect Client");
+ sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
+ sizerCmds->AddSpacer(20);
- file_menu->Append(SERVER_EXIT, _T("&Quit\tCtrl-Q"));
+ btn = new wxButton( panel, ID_ADVISE, "&Advise");
+ sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
+ sizerCmds->AddSpacer(20);
- wxMenuBar *menu_bar = new wxMenuBar;
+ sizerMain->Add(sizerCmds, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
- menu_bar->Append(file_menu, _T("&File"));
+ wxStaticBoxSizer * const
+ sizerLog = new wxStaticBoxSizer(wxVERTICAL, panel, "Server &log");
- // Associate the menu bar with the frame
- SetMenuBar(menu_bar);
+ wxTextCtrl * const textLog = new wxTextCtrl
+ (
+ panel,
+ wxID_ANY,
+ "",
+ wxDefaultPosition, wxSize(500, 140),
+ wxTE_MULTILINE
+ );
+ sizerLog->Add(textLog, 1, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
- // Make a listbox
- wxListBox *list = new wxListBox(this, SERVER_LISTBOX, wxPoint(5, 5));
- list->Append(_T("Apple"));
- list->Append(_T("Pear"));
- list->Append(_T("Orange"));
- list->Append(_T("Banana"));
- list->Append(_T("Fruit"));
+ sizerMain->Add(sizerLog, 1, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
+
+ panel->SetSizer(sizerMain);
+ sizerMain->SetSizeHints(panel);
+ SetClientSize(panel->GetSize());
+
+ GetServername()->SetSelection(0);
+ wxLogTextCtrl *logWindow = new wxLogTextCtrl(textLog);
+ delete wxLog::SetActiveTarget(logWindow);
+ wxLogMessage("Click on Start to start the server");
+ UpdateUI();
}
-// Set the client process's listbox to this item
-void MyFrame::OnListBoxClick(wxCommandEvent& WXUNUSED(event))
+void MyFrame::UpdateUI()
{
- wxListBox* listBox = (wxListBox*) FindWindow(SERVER_LISTBOX);
- if (listBox)
- {
- wxString value = listBox->GetStringSelection();
+ GetStart()->Enable(m_server == NULL);
+ GetServername()->Enable(m_server == NULL);
+ GetAdvise()->Enable(m_server && m_server->CanAdvise());
+ GetDisconnect()->Enable(m_server && m_server->IsConnected());
+}
- /* Because the_connection only holds one connection, in this sample only
- one connection can receive advise messages */
- if (the_connection)
- {
- the_connection->Advise(IPC_ADVISE_NAME, (wxChar*)value.c_str());
- }
- }
+void MyFrame::OnClose(wxCloseEvent& event)
+{
+ wxDELETE(m_server);
+ event.Skip();
}
-void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnStart(wxCommandEvent& WXUNUSED(event))
{
- Close(true);
+ // Create a new server
+ m_server = new MyServer;
+ wxString servername = GetServername()->GetStringSelection();
+ if (m_server->Create(servername))
+ {
+ wxLogMessage("Server %s started", servername);
+ #if wxUSE_DDE_FOR_IPC
+ wxLogMessage("Server uses DDE");
+ #else // !wxUSE_DDE_FOR_IPC
+ wxLogMessage("Server uses TCP");
+ #endif // wxUSE_DDE_FOR_IPC/!wxUSE_DDE_FOR_IPC
+ }
+ else
+ {
+ wxLogMessage("Server %s failed to start", servername);
+ wxDELETE(m_server);
+ }
+ UpdateUI();
}
-// ----------------------------------------------------------------------------
-// IPCDialogBox
-// ----------------------------------------------------------------------------
+void MyFrame::OnServerName( wxCommandEvent& WXUNUSED(event) )
+{
+ if ( GetServername()->GetStringSelection() == "..." )
+ {
+ wxString s = wxGetTextFromUser
+ (
+ "Specify the name of the server",
+ "Server Name",
+ "",
+ this
+ );
+
+ if ( !s.empty() && s != IPC_SERVICE )
+ {
+ GetServername()->Insert(s, 0);
+ GetServername()->SetSelection(0);
+ }
+ }
+}
-IPCDialogBox::IPCDialogBox(wxWindow *parent, const wxString& title,
- const wxPoint& pos, const wxSize& size,
- MyConnection *connection)
- : wxDialog(parent, wxID_ANY, title, pos, size)
+void MyFrame::Disconnect()
{
- m_connection = connection;
- (void)new wxButton(this, SERVER_QUIT_BUTTON, _T("Quit this connection"),
- wxPoint(5, 5));
- Fit();
+ m_server->Disconnect();
+ UpdateUI();
}
-IPCDialogBox::~IPCDialogBox( )
+void MyFrame::OnDisconnect(wxCommandEvent& WXUNUSED(event))
{
- // wxWidgets exit code destroys dialog before destroying the connection in
- // OnExit, so make sure connection won't try to delete the dialog later.
- if (m_connection)
- m_connection->dialog = NULL;
+ Disconnect();
}
-void IPCDialogBox::OnQuit(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnAdvise(wxCommandEvent& WXUNUSED(event))
{
- m_connection->Disconnect();
- delete m_connection;
+ m_server->Advise();
}
// ----------------------------------------------------------------------------
// MyServer
// ----------------------------------------------------------------------------
+MyServer::MyServer() : wxServer()
+{
+ m_connection = NULL;
+}
+
+MyServer::~MyServer()
+{
+ Disconnect();
+}
+
wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
{
+ wxLogMessage("OnAcceptConnection(\"%s\")", topic);
+
if ( topic == IPC_TOPIC )
- return new MyConnection();
+ {
+ m_connection = new MyConnection();
+ wxGetApp().GetFrame()->UpdateUI();
+ wxLogMessage("Connection accepted");
+ return m_connection;
+ }
+ //else: unknown topic
- // unknown topic
+ wxLogMessage("Unknown topic, connection refused");
return NULL;
}
+void MyServer::Disconnect()
+{
+ if ( m_connection )
+ {
+ wxDELETE(m_connection);
+ wxGetApp().GetFrame()->UpdateUI();
+ wxLogMessage("Disconnected client");
+ }
+}
+
+void MyServer::Advise()
+{
+ if ( CanAdvise() )
+ {
+ const wxDateTime now = wxDateTime::Now();
+
+ m_connection->Advise(m_connection->m_advise, now.Format());
+
+ const wxString s = now.FormatTime() + " " + now.FormatDate();
+ m_connection->Advise(m_connection->m_advise, s.mb_str(), wxNO_LEN);
+
+#if wxUSE_DDE_FOR_IPC
+ wxLogMessage("DDE Advise type argument cannot be wxIPC_PRIVATE. "
+ "The client will receive it as wxIPC_TEXT, "
+ " and receive the correct no of bytes, "
+ "but not print a correct log entry.");
+#endif
+ char bytes[3] = { '1', '2', '3' };
+ m_connection->Advise(m_connection->m_advise, bytes, 3, wxIPC_PRIVATE);
+ }
+}
+
// ----------------------------------------------------------------------------
// MyConnection
// ----------------------------------------------------------------------------
-MyConnection::MyConnection()
- : wxConnection()
+bool
+MyConnection::OnExecute(const wxString& topic,
+ const void *data,
+ size_t size,
+ wxIPCFormat format)
{
- dialog = new IPCDialogBox(wxTheApp->GetTopWindow(), _T("Connection"),
- wxPoint(100, 100), wxSize(500, 500), this);
- dialog->Show(true);
- the_connection = this;
+ Log("OnExecute", topic, "", data, size, format);
+ return true;
}
-MyConnection::~MyConnection()
+bool
+MyConnection::OnPoke(const wxString& topic,
+ const wxString& item,
+ const void *data,
+ size_t size,
+ wxIPCFormat format)
{
- if (the_connection)
+ Log("OnPoke", topic, item, data, size, format);
+ return wxConnection::OnPoke(topic, item, data, size, format);
+}
+
+const void *
+MyConnection::OnRequest(const wxString& topic,
+ const wxString& item,
+ size_t *size,
+ wxIPCFormat format)
+{
+ *size = 0;
+
+ wxString s,
+ afterDate;
+ if ( item.StartsWith("Date", &afterDate) )
{
- if (dialog)
+ const wxDateTime now = wxDateTime::Now();
+
+ if ( afterDate.empty() )
+ {
+ s = now.Format();
+ *size = wxNO_LEN;
+ }
+ else if ( afterDate == "+len" )
{
- dialog->m_connection = NULL;
- dialog->Destroy();
+ s = now.FormatTime() + " " + now.FormatDate();
+ *size = strlen(s.mb_str()) + 1;
}
- the_connection = NULL;
}
+ else if ( item == "bytes[3]" )
+ {
+ s = "123";
+ *size = 3;
+ }
+
+ if ( !*size )
+ {
+ wxLogMessage("Unknown request for \"%s\"", item);
+ return NULL;
+ }
+
+ // store the data pointer to which we return in a member variable to ensure
+ // that the pointer remains valid even after we return
+ m_requestData = s.mb_str();
+ const void * const data = m_requestData;
+ Log("OnRequest", topic, item, data, *size, format);
+ return data;
}
-bool MyConnection::OnExecute(const wxString& WXUNUSED(topic),
- wxChar *data,
- int WXUNUSED(size),
- wxIPCFormat WXUNUSED(format))
+bool MyConnection::OnStartAdvise(const wxString& topic, const wxString& item)
{
- wxLogStatus(wxT("Execute command: %s"), data);
+ wxLogMessage("OnStartAdvise(\"%s\", \"%s\")", topic, item);
+ wxLogMessage("Returning true");
+ m_advise = item;
+ wxGetApp().GetFrame()->UpdateUI();
return true;
}
-bool MyConnection::OnPoke(const wxString& WXUNUSED(topic),
- const wxString& item,
- wxChar *data,
- int WXUNUSED(size),
- wxIPCFormat WXUNUSED(format))
+bool MyConnection::OnStopAdvise(const wxString& topic, const wxString& item)
{
- wxLogStatus(wxT("Poke command: %s = %s"), item.c_str(), data);
+ wxLogMessage("OnStopAdvise(\"%s\",\"%s\")", topic, item);
+ wxLogMessage("Returning true");
+ m_advise.clear();
+ wxGetApp().GetFrame()->UpdateUI();
return true;
}
-wxChar *MyConnection::OnRequest(const wxString& WXUNUSED(topic),
- const wxString& WXUNUSED(item),
- int * WXUNUSED(size),
- wxIPCFormat WXUNUSED(format))
+bool
+MyConnection::DoAdvise(const wxString& item,
+ const void *data,
+ size_t size,
+ wxIPCFormat format)
{
- return _T("Here, have your data, client!");
+ Log("Advise", "", item, data, size, format);
+ return wxConnection::DoAdvise(item, data, size, format);
}
-bool MyConnection::OnStartAdvise(const wxString& WXUNUSED(topic),
- const wxString& WXUNUSED(item))
+bool MyConnection::OnDisconnect()
{
+ wxLogMessage("OnDisconnect()");
+ wxGetApp().GetFrame()->Disconnect();
return true;
}
-
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