ebbf740764
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57798 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
403 lines
13 KiB
C++
403 lines
13 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: socket.h
|
|
// Purpose: Socket handling classes
|
|
// Authors: Guilhem Lavaux, Guillermo Rodriguez Garcia
|
|
// Modified by:
|
|
// Created: April 1997
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) Guilhem Lavaux
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_SOCKET_H_
|
|
#define _WX_SOCKET_H_
|
|
|
|
#include "wx/defs.h"
|
|
|
|
#if wxUSE_SOCKETS
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// wxSocket headers
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#include "wx/event.h"
|
|
#include "wx/sckaddr.h"
|
|
#include "wx/list.h"
|
|
|
|
class wxSocketImpl;
|
|
|
|
// ------------------------------------------------------------------------
|
|
// Types and constants
|
|
// ------------------------------------------------------------------------
|
|
|
|
// Types of different socket notifications or events.
|
|
//
|
|
// NB: the values here should be consecutive and start with 0 as they are
|
|
// used to construct the wxSOCKET_XXX_FLAG bit mask values below
|
|
enum wxSocketNotify
|
|
{
|
|
wxSOCKET_INPUT,
|
|
wxSOCKET_OUTPUT,
|
|
wxSOCKET_CONNECTION,
|
|
wxSOCKET_LOST
|
|
};
|
|
|
|
enum
|
|
{
|
|
wxSOCKET_INPUT_FLAG = 1 << wxSOCKET_INPUT,
|
|
wxSOCKET_OUTPUT_FLAG = 1 << wxSOCKET_OUTPUT,
|
|
wxSOCKET_CONNECTION_FLAG = 1 << wxSOCKET_CONNECTION,
|
|
wxSOCKET_LOST_FLAG = 1 << wxSOCKET_LOST
|
|
};
|
|
|
|
// this is a combination of the bit masks defined above
|
|
typedef int wxSocketEventFlags;
|
|
|
|
enum wxSocketError
|
|
{
|
|
wxSOCKET_NOERROR = 0,
|
|
wxSOCKET_INVOP,
|
|
wxSOCKET_IOERR,
|
|
wxSOCKET_INVADDR,
|
|
wxSOCKET_INVSOCK,
|
|
wxSOCKET_NOHOST,
|
|
wxSOCKET_INVPORT,
|
|
wxSOCKET_WOULDBLOCK,
|
|
wxSOCKET_TIMEDOUT,
|
|
wxSOCKET_MEMERR,
|
|
wxSOCKET_OPTERR
|
|
};
|
|
|
|
// socket options/flags bit masks
|
|
enum
|
|
{
|
|
wxSOCKET_NONE = 0,
|
|
wxSOCKET_NOWAIT = 1,
|
|
wxSOCKET_WAITALL = 2,
|
|
wxSOCKET_BLOCK = 4,
|
|
wxSOCKET_REUSEADDR = 8,
|
|
wxSOCKET_BROADCAST = 16,
|
|
wxSOCKET_NOBIND = 32
|
|
};
|
|
|
|
typedef int wxSocketFlags;
|
|
|
|
// socket kind values (badly defined, don't use)
|
|
enum wxSocketType
|
|
{
|
|
wxSOCKET_UNINIT,
|
|
wxSOCKET_CLIENT,
|
|
wxSOCKET_SERVER,
|
|
wxSOCKET_BASE,
|
|
wxSOCKET_DATAGRAM
|
|
};
|
|
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// wxSocketBase
|
|
// --------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_NET wxSocketBase : public wxObject
|
|
{
|
|
public:
|
|
// Public interface
|
|
// ----------------
|
|
|
|
// ctors and dtors
|
|
wxSocketBase();
|
|
wxSocketBase(wxSocketFlags flags, wxSocketType type);
|
|
virtual ~wxSocketBase();
|
|
void Init();
|
|
bool Destroy();
|
|
|
|
// state
|
|
bool Ok() const { return IsOk(); }
|
|
bool IsOk() const { return m_impl != NULL; }
|
|
bool Error() const { return LastError() != wxSOCKET_NOERROR; }
|
|
bool IsClosed() const { return m_closed; }
|
|
bool IsConnected() const { return m_connected; }
|
|
bool IsData() { return WaitForRead(0, 0); }
|
|
bool IsDisconnected() const { return !IsConnected(); }
|
|
wxUint32 LastCount() const { return m_lcount; }
|
|
wxSocketError LastError() const;
|
|
void SaveState();
|
|
void RestoreState();
|
|
|
|
// addresses
|
|
virtual bool GetLocal(wxSockAddress& addr_man) const;
|
|
virtual bool GetPeer(wxSockAddress& addr_man) const;
|
|
virtual bool SetLocal(const wxIPV4address& local);
|
|
|
|
// base IO
|
|
virtual bool Close();
|
|
void ShutdownOutput();
|
|
wxSocketBase& Discard();
|
|
wxSocketBase& Peek(void* buffer, wxUint32 nbytes);
|
|
wxSocketBase& Read(void* buffer, wxUint32 nbytes);
|
|
wxSocketBase& ReadMsg(void *buffer, wxUint32 nbytes);
|
|
wxSocketBase& Unread(const void *buffer, wxUint32 nbytes);
|
|
wxSocketBase& Write(const void *buffer, wxUint32 nbytes);
|
|
wxSocketBase& WriteMsg(const void *buffer, wxUint32 nbytes);
|
|
|
|
// all Wait() functions wait until their condition is satisfied or the
|
|
// timeout expires; if seconds == -1 (default) then m_timeout value is used
|
|
//
|
|
// it is also possible to call InterruptWait() to cancel any current Wait()
|
|
|
|
// wait for anything at all to happen with this socket
|
|
bool Wait(long seconds = -1, long milliseconds = 0);
|
|
|
|
// wait until we can read from or write to the socket without blocking
|
|
// (notice that this does not mean that the operation will succeed but only
|
|
// that it will return immediately)
|
|
bool WaitForRead(long seconds = -1, long milliseconds = 0);
|
|
bool WaitForWrite(long seconds = -1, long milliseconds = 0);
|
|
|
|
// wait until the connection is terminated
|
|
bool WaitForLost(long seconds = -1, long milliseconds = 0);
|
|
|
|
void InterruptWait() { m_interrupt = true; }
|
|
|
|
|
|
wxSocketFlags GetFlags() const { return m_flags; }
|
|
void SetFlags(wxSocketFlags flags);
|
|
void SetTimeout(long seconds);
|
|
long GetTimeout() const { return m_timeout; }
|
|
|
|
bool GetOption(int level, int optname, void *optval, int *optlen);
|
|
bool SetOption(int level, int optname, const void *optval, int optlen);
|
|
wxUint32 GetLastIOSize() const { return m_lcount; }
|
|
|
|
// event handling
|
|
void *GetClientData() const { return m_clientData; }
|
|
void SetClientData(void *data) { m_clientData = data; }
|
|
void SetEventHandler(wxEvtHandler& handler, int id = wxID_ANY);
|
|
void SetNotify(wxSocketEventFlags flags);
|
|
void Notify(bool notify);
|
|
|
|
// initialize/shutdown the sockets (usually called automatically)
|
|
static bool IsInitialized();
|
|
static bool Initialize();
|
|
static void Shutdown();
|
|
|
|
|
|
// Implementation from now on
|
|
// --------------------------
|
|
|
|
// do not use, should be private (called from wxSocketImpl only)
|
|
void OnRequest(wxSocketNotify notify);
|
|
|
|
// do not use, not documented nor supported
|
|
bool IsNoWait() const { return ((m_flags & wxSOCKET_NOWAIT) != 0); }
|
|
wxSocketType GetType() const { return m_type; }
|
|
|
|
private:
|
|
friend class wxSocketClient;
|
|
friend class wxSocketServer;
|
|
friend class wxDatagramSocket;
|
|
|
|
// low level IO
|
|
wxUint32 DoRead(void* buffer, wxUint32 nbytes);
|
|
wxUint32 DoWrite(const void *buffer, wxUint32 nbytes);
|
|
|
|
// wait until the given flags are set for this socket or the given timeout
|
|
// (or m_timeout) expires
|
|
//
|
|
// notice that wxSOCKET_LOST_FLAG is always taken into account and the
|
|
// function returns -1 if the connection was lost; otherwise it returns
|
|
// true if any of the events specified by flags argument happened or false
|
|
// if the timeout expired
|
|
int DoWait(long timeout, wxSocketEventFlags flags);
|
|
|
|
// a helper calling DoWait() using the same convention as the public
|
|
// WaitForXXX() functions use, i.e. use our timeout if seconds == -1 or the
|
|
// specified timeout otherwise
|
|
int DoWait(long seconds, long milliseconds, wxSocketEventFlags flags);
|
|
|
|
// another helper calling DoWait() using our m_timeout
|
|
int DoWaitWithTimeout(wxSocketEventFlags flags)
|
|
{
|
|
return DoWait(m_timeout*1000, flags);
|
|
}
|
|
|
|
// pushback buffer
|
|
void Pushback(const void *buffer, wxUint32 size);
|
|
wxUint32 GetPushback(void *buffer, wxUint32 size, bool peek);
|
|
|
|
// store the given error as the LastError()
|
|
void SetError(wxSocketError error);
|
|
|
|
private:
|
|
// socket
|
|
wxSocketImpl *m_impl; // port-specific implementation
|
|
wxSocketType m_type; // wxSocket type
|
|
|
|
// state
|
|
wxSocketFlags m_flags; // wxSocket flags
|
|
bool m_connected; // connected?
|
|
bool m_establishing; // establishing connection?
|
|
bool m_reading; // busy reading?
|
|
bool m_writing; // busy writing?
|
|
bool m_closed; // was the other end closed?
|
|
wxUint32 m_lcount; // last IO transaction size
|
|
unsigned long m_timeout; // IO timeout value in seconds
|
|
// (TODO: remove, wxSocketImpl has it too)
|
|
wxList m_states; // stack of states (TODO: remove!)
|
|
bool m_interrupt; // interrupt ongoing wait operations?
|
|
bool m_beingDeleted; // marked for delayed deletion?
|
|
wxIPV4address m_localAddress; // bind to local address?
|
|
|
|
// pushback buffer
|
|
void *m_unread; // pushback buffer
|
|
wxUint32 m_unrd_size; // pushback buffer size
|
|
wxUint32 m_unrd_cur; // pushback pointer (index into buffer)
|
|
|
|
// events
|
|
int m_id; // socket id
|
|
wxEvtHandler *m_handler; // event handler
|
|
void *m_clientData; // client data for events
|
|
bool m_notify; // notify events to users?
|
|
wxSocketEventFlags m_eventmask; // which events to notify?
|
|
wxSocketEventFlags m_eventsgot; // collects events received in OnRequest()
|
|
|
|
// the initialization count, wxSocket is initialized if > 0
|
|
static size_t m_countInit;
|
|
|
|
|
|
friend class wxSocketReadGuard;
|
|
friend class wxSocketWriteGuard;
|
|
|
|
DECLARE_NO_COPY_CLASS(wxSocketBase)
|
|
DECLARE_CLASS(wxSocketBase)
|
|
};
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// wxSocketServer
|
|
// --------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_NET wxSocketServer : public wxSocketBase
|
|
{
|
|
public:
|
|
wxSocketServer(const wxSockAddress& addr,
|
|
wxSocketFlags flags = wxSOCKET_NONE);
|
|
|
|
wxSocketBase* Accept(bool wait = true);
|
|
bool AcceptWith(wxSocketBase& socket, bool wait = true);
|
|
|
|
bool WaitForAccept(long seconds = -1, long milliseconds = 0);
|
|
|
|
DECLARE_NO_COPY_CLASS(wxSocketServer)
|
|
DECLARE_CLASS(wxSocketServer)
|
|
};
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// wxSocketClient
|
|
// --------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_NET wxSocketClient : public wxSocketBase
|
|
{
|
|
public:
|
|
wxSocketClient(wxSocketFlags flags = wxSOCKET_NONE);
|
|
|
|
virtual bool Connect(const wxSockAddress& addr, bool wait = true);
|
|
bool Connect(const wxSockAddress& addr,
|
|
const wxSockAddress& local,
|
|
bool wait = true);
|
|
|
|
bool WaitOnConnect(long seconds = -1, long milliseconds = 0);
|
|
|
|
// Sets initial socket buffer sizes using the SO_SNDBUF and SO_RCVBUF
|
|
// options before calling connect (either one can be -1 to leave it
|
|
// unchanged)
|
|
void SetInitialSocketBuffers(int recv, int send)
|
|
{
|
|
m_initialRecvBufferSize = recv;
|
|
m_initialSendBufferSize = send;
|
|
}
|
|
|
|
private:
|
|
virtual bool DoConnect(const wxSockAddress& addr,
|
|
const wxSockAddress* local,
|
|
bool wait = true);
|
|
|
|
// buffer sizes, -1 if unset and defaults should be used
|
|
int m_initialRecvBufferSize;
|
|
int m_initialSendBufferSize;
|
|
|
|
DECLARE_NO_COPY_CLASS(wxSocketClient)
|
|
DECLARE_CLASS(wxSocketClient)
|
|
};
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// wxDatagramSocket
|
|
// --------------------------------------------------------------------------
|
|
|
|
// WARNING: still in alpha stage
|
|
|
|
class WXDLLIMPEXP_NET wxDatagramSocket : public wxSocketBase
|
|
{
|
|
public:
|
|
wxDatagramSocket(const wxSockAddress& addr,
|
|
wxSocketFlags flags = wxSOCKET_NONE);
|
|
|
|
wxDatagramSocket& RecvFrom(wxSockAddress& addr,
|
|
void *buf,
|
|
wxUint32 nBytes);
|
|
wxDatagramSocket& SendTo(const wxSockAddress& addr,
|
|
const void* buf,
|
|
wxUint32 nBytes);
|
|
|
|
/* TODO:
|
|
bool Connect(wxSockAddress& addr);
|
|
*/
|
|
|
|
private:
|
|
DECLARE_NO_COPY_CLASS(wxDatagramSocket)
|
|
DECLARE_CLASS(wxDatagramSocket)
|
|
};
|
|
|
|
|
|
// --------------------------------------------------------------------------
|
|
// wxSocketEvent
|
|
// --------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_NET wxSocketEvent : public wxEvent
|
|
{
|
|
public:
|
|
wxSocketEvent(int id = 0)
|
|
: wxEvent(id, wxEVT_SOCKET)
|
|
{
|
|
}
|
|
|
|
wxSocketNotify GetSocketEvent() const { return m_event; }
|
|
wxSocketBase *GetSocket() const
|
|
{ return (wxSocketBase *) GetEventObject(); }
|
|
void *GetClientData() const { return m_clientData; }
|
|
|
|
virtual wxEvent *Clone() const { return new wxSocketEvent(*this); }
|
|
|
|
public:
|
|
wxSocketNotify m_event;
|
|
void *m_clientData;
|
|
|
|
DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxSocketEvent)
|
|
};
|
|
|
|
|
|
typedef void (wxEvtHandler::*wxSocketEventFunction)(wxSocketEvent&);
|
|
|
|
#define wxSocketEventHandler(func) \
|
|
(wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxSocketEventFunction, &func)
|
|
|
|
#define EVT_SOCKET(id, func) \
|
|
wx__DECLARE_EVT1(wxEVT_SOCKET, id, wxSocketEventHandler(func))
|
|
|
|
#endif // wxUSE_SOCKETS
|
|
|
|
#endif // _WX_SOCKET_H_
|
|
|