405 lines
11 KiB
C++
405 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: samples/ipc/baseserver.cpp
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// Purpose: IPC sample: console server
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// Author: Anders Larsen
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// Most of the code was stolen from: samples/ipc/server.cpp
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// (c) Julian Smart, Jurgen Doornik
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// Created: 2007-11-08
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// Copyright: (c) 2007 Anders Larsen
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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// Settings common to both executables: determines whether
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// we're using TCP/IP or real DDE.
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#include "ipcsetup.h"
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#include "connection.h"
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#include "wx/timer.h"
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#include "wx/datetime.h"
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// ----------------------------------------------------------------------------
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// local classes
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// ----------------------------------------------------------------------------
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// a simple connection class testing and logging various operations
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class MyConnection : public MyConnectionBase, public wxTimer
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{
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public:
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virtual bool Disconnect() { return wxConnection::Disconnect(); }
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virtual bool OnExecute(const wxString& topic,
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const void *data,
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size_t size,
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wxIPCFormat format);
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virtual const void *OnRequest(const wxString& topic,
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const wxString& item,
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size_t *size,
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wxIPCFormat format);
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virtual bool OnPoke(const wxString& topic,
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const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format);
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virtual bool OnStartAdvise(const wxString& topic, const wxString& item);
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virtual bool OnStopAdvise(const wxString& topic, const wxString& item);
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virtual bool DoAdvise(const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format);
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virtual bool OnDisconnect();
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virtual void Notify();
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private:
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wxString m_sAdvise;
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wxString m_sRequestDate;
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char m_achRequestBytes[3];
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};
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// a connection used for benchmarking some IPC operations by
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// tests/benchmarks/ipcclient.cpp
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class BenchConnection : public wxConnection
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{
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public:
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BenchConnection() { m_advise = false; }
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virtual bool OnPoke(const wxString& topic,
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const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format);
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virtual bool OnStartAdvise(const wxString& topic, const wxString& item);
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virtual bool OnStopAdvise(const wxString& topic, const wxString& item);
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private:
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// return true if this is the supported topic+item combination, log an
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// error message otherwise
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bool IsSupportedTopicAndItem(const wxString& operation,
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const wxString& topic,
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const wxString& item) const;
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// the item which can be manipulated by the client via Poke() calls
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wxString m_item;
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// should we notify the client about changes to m_item?
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bool m_advise;
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wxDECLARE_NO_COPY_CLASS(BenchConnection);
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};
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// a simple server accepting connections to IPC_TOPIC and IPC_BENCHMARK_TOPIC
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class MyServer : public wxServer
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{
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public:
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MyServer();
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virtual ~MyServer();
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void Disconnect();
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bool IsConnected() { return m_connection != NULL; };
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virtual wxConnectionBase *OnAcceptConnection(const wxString& topic);
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private:
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wxConnection *m_connection;
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};
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// Define a new application
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class MyApp : public wxApp
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{
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public:
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virtual bool OnInit();
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protected:
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MyServer m_server;
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};
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DECLARE_APP(MyApp)
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// ============================================================================
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// implementation
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// ============================================================================
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IMPLEMENT_APP_CONSOLE(MyApp)
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// ----------------------------------------------------------------------------
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// MyApp
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// ----------------------------------------------------------------------------
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bool MyApp::OnInit()
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{
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if ( !wxApp::OnInit() )
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return false;
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delete wxLog::SetActiveTarget(new wxLogStderr);
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const char * const kind =
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#if wxUSE_DDE_FOR_IPC
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"DDE"
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#else
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"TCP"
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#endif
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;
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// Create a new server
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if ( !m_server.Create(IPC_SERVICE) )
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{
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wxLogMessage("%s server failed to start on %s", kind, IPC_SERVICE);
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return false;
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}
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wxLogMessage("%s server started on %s", kind, IPC_SERVICE);
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return true;
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}
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// ----------------------------------------------------------------------------
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// MyServer
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// ----------------------------------------------------------------------------
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MyServer::MyServer()
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{
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m_connection = NULL;
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}
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MyServer::~MyServer()
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{
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Disconnect();
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}
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wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
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{
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wxLogMessage("OnAcceptConnection(\"%s\")", topic);
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if ( topic == IPC_TOPIC )
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{
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m_connection = new MyConnection;
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}
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else if ( topic == IPC_BENCHMARK_TOPIC )
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{
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m_connection = new BenchConnection;
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}
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else // unknown topic
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{
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wxLogMessage("Unknown topic");
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return NULL;
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}
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wxLogMessage("Connection accepted");
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return m_connection;
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}
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void MyServer::Disconnect()
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{
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if ( m_connection )
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{
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m_connection->Disconnect();
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wxDELETE(m_connection);
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wxLogMessage("Disconnected client");
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}
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}
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// ----------------------------------------------------------------------------
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// MyConnection
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// ----------------------------------------------------------------------------
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bool
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MyConnection::OnExecute(const wxString& topic,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("OnExecute", topic, "", data, size, format);
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return true;
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}
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bool
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MyConnection::OnPoke(const wxString& topic,
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const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("OnPoke", topic, item, data, size, format);
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return wxConnection::OnPoke(topic, item, data, size, format);
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}
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const void *
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MyConnection::OnRequest(const wxString& topic,
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const wxString& item,
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size_t *size,
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wxIPCFormat format)
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{
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const void *data;
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if (item == "Date")
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{
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m_sRequestDate = wxDateTime::Now().Format();
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data = m_sRequestDate.c_str();
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*size = wxNO_LEN;
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}
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else if (item == "Date+len")
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{
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m_sRequestDate = wxDateTime::Now().FormatTime() +
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" " + wxDateTime::Now().FormatDate();
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data = m_sRequestDate.c_str();
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*size = m_sRequestDate.Length() + 1;
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}
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else if (item == "bytes[3]")
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{
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data = m_achRequestBytes;
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m_achRequestBytes[0] = '1';
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m_achRequestBytes[1] = '2';
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m_achRequestBytes[2] = '3';
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*size = 3;
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}
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else
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{
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data = NULL;
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*size = 0;
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}
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Log("OnRequest", topic, item, data, *size, format);
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return data;
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}
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bool MyConnection::OnStartAdvise(const wxString& topic, const wxString& item)
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{
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wxLogMessage("OnStartAdvise(\"%s\",\"%s\")", topic, item);
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wxLogMessage("Returning true");
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m_sAdvise = item;
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Start(3000); // schedule our Notify() to be called in 3 seconds
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return true;
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}
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bool MyConnection::OnStopAdvise(const wxString& topic, const wxString& item)
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{
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wxLogMessage("OnStopAdvise(\"%s\",\"%s\")", topic, item);
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wxLogMessage("Returning true");
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m_sAdvise.clear();
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Stop();
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return true;
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}
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void MyConnection::Notify()
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{
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if (!m_sAdvise.empty())
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{
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wxString s = wxDateTime::Now().Format();
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Advise(m_sAdvise, s);
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s = wxDateTime::Now().FormatTime() + " "
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+ wxDateTime::Now().FormatDate();
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Advise(m_sAdvise, s.mb_str(), s.length() + 1);
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#if wxUSE_DDE_FOR_IPC
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wxLogMessage("DDE Advise type argument cannot be wxIPC_PRIVATE. "
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"The client will receive it as wxIPC_TEXT, "
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"and receive the correct no of bytes, "
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"but not print a correct log entry.");
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#endif // DDE
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char bytes[3];
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bytes[0] = '1'; bytes[1] = '2'; bytes[2] = '3';
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Advise(m_sAdvise, bytes, 3, wxIPC_PRIVATE);
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// this works, but the log treats it as a string now
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// m_connection->Advise(m_connection->m_sAdvise, bytes, 3, wxIPC_TEXT );
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}
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}
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bool MyConnection::DoAdvise(const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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Log("Advise", "", item, data, size, format);
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return wxConnection::DoAdvise(item, data, size, format);
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}
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bool MyConnection::OnDisconnect()
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{
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wxLogMessage("OnDisconnect()");
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return true;
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}
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// ----------------------------------------------------------------------------
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// BenchConnection
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// ----------------------------------------------------------------------------
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bool BenchConnection::IsSupportedTopicAndItem(const wxString& operation,
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const wxString& topic,
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const wxString& item) const
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{
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if ( topic != IPC_BENCHMARK_TOPIC ||
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item != IPC_BENCHMARK_ITEM )
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{
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wxLogMessage("Unexpected %s(\"%s\", \"%s\") call.",
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operation, topic, item);
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return false;
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}
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return true;
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}
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bool BenchConnection::OnPoke(const wxString& topic,
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const wxString& item,
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const void *data,
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size_t size,
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wxIPCFormat format)
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{
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if ( !IsSupportedTopicAndItem("OnPoke", topic, item) )
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return false;
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if ( !IsTextFormat(format) )
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{
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wxLogMessage("Unexpected format %d in OnPoke().", format);
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return false;
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}
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m_item = GetTextFromData(data, size, format);
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if ( m_advise )
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{
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if ( !Advise(item, m_item) )
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{
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wxLogMessage("Failed to advise client about the change.");
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}
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}
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return true;
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}
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bool BenchConnection::OnStartAdvise(const wxString& topic, const wxString& item)
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{
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if ( !IsSupportedTopicAndItem("OnStartAdvise", topic, item) )
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return false;
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m_advise = true;
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return true;
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}
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bool BenchConnection::OnStopAdvise(const wxString& topic, const wxString& item)
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{
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if ( !IsSupportedTopicAndItem("OnStopAdvise", topic, item) )
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return false;
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m_advise = false;
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return true;
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}
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