wxWidgets: wxSocketClient Class Reference

| Version: 3.1.5

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Public Member Functions | List of all members
wxSocketClient Class Reference
Class List by Category » Networking

`#include </cygdrive/c/Users/Hamis/Cygwin-packaging/wxWidgets3.1/wxWidgets3.1-3.1.5-4.x86_64/src/wxWidgets-3.1.5/interface/wx/socket.h>`

Inheritance diagram for wxSocketClient:
[legend]

## Detailed Description

Todo
  describe me.

##

Library: wxNet

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## Public Member Functions
| wxSocketClient (wxSocketFlags flags=wxSOCKET_NONE)
| Constructor.
virtual | ~wxSocketClient ()
| Destructor.
virtual bool | Connect (const wxSockAddress &address, bool wait=true)
| Connects to a server using the specified address.
bool | Connect (const wxSockAddress &address, const wxSockAddress &local, bool wait=true)
| Connects to a server using the specified address.
bool | WaitOnConnect (long seconds=-1, long milliseconds=0)
| Wait until a connection request completes, or until the specified timeout elapses.
Public Member Functions inherited from wxSocketBase
bool | Error () const
| Returns true if an error occurred in the last IO operation.
virtual bool | GetLocal (wxSockAddress &addr) const
| Return the local address of the socket.
virtual bool | GetPeer (wxSockAddress &addr) const
| Return the peer address field of the socket.
long | GetTimeout () const
| Return the socket timeout in seconds.
bool | IsConnected () const
| Returns true if the socket is connected.
bool | IsData ()
| Check if the socket can be currently read or written.
bool | IsDisconnected () const
| Returns true if the socket is not connected.
bool | IsOk () const
| Returns true if the socket is initialized and ready and false in other cases.
wxUint32 | LastCount () const
| Returns the number of bytes read or written by the last IO call.
wxUint32 | LastReadCount () const
| Returns the number of bytes read by the last Read() or ReadMsg() call (receive direction only).
wxUint32 | LastWriteCount () const
| Returns the number of bytes written by the last Write() or WriteMsg() call (transmit direction only).
wxSocketError | LastError () const
| Returns the last wxSocket error.
void | RestoreState ()
| Restore the previous state of the socket, as saved with SaveState().
void | SaveState ()
| Save the current state of the socket in a stack.
virtual bool | Close ()
| Shut down the socket, disabling further transmission and reception of data and disable events for the socket and frees the associated system resources.
void | ShutdownOutput ()
| Shuts down the writing end of the socket.
wxSocketBase & | Discard ()
| Delete all bytes in the incoming queue.
wxSocketFlags | GetFlags () const
| Returns current IO flags, as set with SetFlags().
void | InterruptWait ()
| Use this function to interrupt any wait operation currently in progress.
wxSocketBase & | Peek (void *buffer, wxUint32 nbytes)
| Peek into the socket by copying the next bytes which would be read by Read() into the provided buffer.
wxSocketBase & | Read (void *buffer, wxUint32 nbytes)
| Read up to the given number of bytes from the socket.
wxSocketBase & | ReadMsg (void *buffer, wxUint32 nbytes)
| Receive a message sent by WriteMsg().
void | SetFlags (wxSocketFlags flags)
| Use SetFlags to customize IO operation for this socket.
virtual bool | SetLocal (const wxIPV4address &local)
| Set the local address and port to use.
void | SetTimeout (long seconds)
| Set the default socket timeout in seconds.
wxSocketBase & | Unread (const void *buffer, wxUint32 nbytes)
| Put the specified data into the input queue.
bool | Wait (long seconds=-1, long millisecond=0)
| Wait for any socket event.
bool | WaitForLost (long seconds=-1, long millisecond=0)
| Wait until the connection is lost.
bool | WaitForRead (long seconds=-1, long millisecond=0)
| Wait until the socket is readable.
bool | WaitForWrite (long seconds=-1, long millisecond=0)
| Wait until the socket becomes writable.
wxSocketBase & | Write (const void *buffer, wxUint32 nbytes)
| Write up to the given number of bytes to the socket.
wxSocketBase & | WriteMsg (const void *buffer, wxUint32 nbytes)
| Sends a buffer which can be read using ReadMsg().
void * | GetClientData () const
| Returns a pointer of the client data for this socket, as set with SetClientData().
void | Notify (bool notify)
| According to the notify value, this function enables or disables socket events.
void | SetClientData (void *data)
| Sets user-supplied client data for this socket.
void | SetEventHandler (wxEvtHandler &handler, int id=-1)
| Sets an event handler to be called when a socket event occurs.
void | SetNotify (wxSocketEventFlags flags)
| Specifies which socket events are to be sent to the event handler.
wxSOCKET_T | GetSocket () const
| Returns the native socket descriptor.
| wxSocketBase ()
| Default constructor.
virtual | ~wxSocketBase ()
| Destructor.
bool | Destroy ()
| Destroys the socket safely.
Public Member Functions inherited from wxObject
| wxObject ()
| Default ctor; initializes to NULL the internal reference data.
| wxObject (const wxObject &other)
| Copy ctor.
virtual | ~wxObject ()
| Destructor.
virtual wxClassInfo * | GetClassInfo () const
| This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar).
wxObjectRefData * | GetRefData () const
| Returns the wxObject::m_refData pointer, i.e. the data referenced by this object.
bool | IsKindOf (const wxClassInfo *info) const
| Determines whether this class is a subclass of (or the same class as) the given class.
bool | IsSameAs (const wxObject &obj) const
| Returns true if this object has the same data pointer as obj.
void | Ref (const wxObject &clone)
| Makes this object refer to the data in clone.
void | SetRefData (wxObjectRefData *data)
| Sets the wxObject::m_refData pointer.
void | UnRef ()
| Decrements the reference count in the associated data, and if it is zero, deletes the data.
void | UnShare ()
| This is the same of AllocExclusive() but this method is public.
void | operator delete (void *buf)
| The delete operator is defined for debugging versions of the library only, when the identifier `__WXDEBUG__` is defined.
void * | operator new (size_t size, const wxString &filename=NULL, int lineNum=0)
| The new operator is defined for debugging versions of the library only, when the identifier `__WXDEBUG__` is defined.

## Additional Inherited Members
static bool | Initialize ()
| Perform the initialization needed in order to use the sockets.
static void | Shutdown ()
| Shut down the sockets.
Protected Member Functions inherited from wxObject
void | AllocExclusive ()
| Ensure that this object's data is not shared with any other object.
virtual wxObjectRefData * | CreateRefData () const
| Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it.
virtual wxObjectRefData * | CloneRefData (const wxObjectRefData *data) const
| Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data.
Protected Attributes inherited from wxObject
wxObjectRefData * | m_refData
| Pointer to an object which is the object's reference-counted data.

## Constructor & Destructor Documentation

## ◆ wxSocketClient()

wxSocketClient::wxSocketClient | ( | wxSocketFlags | flags = wxSOCKET_NONE | ) |

Constructor.

Notice that if the object is created from a worker thread or if it is created from the main thread but the event loop is not running, flags parameter must include wxSOCKET_BLOCK as non-blocking sockets require dispatching events, which can only be done in the main thread.

Parameters

  flags | Socket flags (See wxSocketBase::SetFlags())

## ◆ ~wxSocketClient()

virtual wxSocketClient::~wxSocketClient | ( |  | ) |
| virtual

Destructor.

Please see wxSocketBase::Destroy().

## Member Function Documentation

## ◆ Connect() [1/2]

virtual bool wxSocketClient::Connect | ( | const wxSockAddress & | address,
|  | bool | wait = true )
| virtual

Connects to a server using the specified address.

If wait is true, Connect() will wait until the connection completes.

Warning
  This method will block the GUI.

If wait is false, Connect() will try to establish the connection and return immediately, without blocking the GUI. When used this way, even if Connect() returns false, the connection request can be completed later. To detect this, use WaitOnConnect(), or catch wxSOCKET_CONNECTION events (for successful establishment) and wxSOCKET_LOST events (for connection failure).

Parameters

  address | Address of the server.
  wait | If true, waits for the connection to complete.

Returns
  true if the connection is established and no error occurs. If wait was true, and Connect() returns false, an error occurred and the connection failed. If wait was false, and Connect() returns false, you should still be prepared to handle the completion of this connection request, either with WaitOnConnect() or by watching wxSOCKET_CONNECTION and wxSOCKET_LOST events.

See also
  WaitOnConnect(), wxSocketBase::SetNotify(), wxSocketBase::Notify()

Reimplemented in wxHTTP.

## ◆ Connect() [2/2]

bool wxSocketClient::Connect | ( | const wxSockAddress & | address,
|  | const wxSockAddress & | local,
|  | bool | wait = true )

Connects to a server using the specified address.

If wait is true, Connect() will wait until the connection completes. Warning: This will block the GUI.

If wait is false, Connect() will try to establish the connection and return immediately, without blocking the GUI. When used this way, even if Connect() returns false, the connection request can be completed later. To detect this, use WaitOnConnect(), or catch wxSOCKET_CONNECTION events (for successful establishment) and wxSOCKET_LOST events (for connection failure).

Parameters

  address | Address of the server.
  local | Bind to the specified local address and port before connecting. The local address and port can also be set using SetLocal(), and then using the 2-parameter Connect() method.
  wait | If true, waits for the connection to complete.

Returns
  true if the connection is established and no error occurs. If wait was true, and Connect() returns false, an error occurred and the connection failed. If wait was false, and Connect() returns false, you should still be prepared to handle the completion of this connection request, either with WaitOnConnect() or by watching wxSOCKET_CONNECTION and wxSOCKET_LOST events.

See also
  WaitOnConnect(), wxSocketBase::SetNotify(), wxSocketBase::Notify()

## ◆ WaitOnConnect()

bool wxSocketClient::WaitOnConnect | ( | long | seconds = -1,
|  | long | milliseconds = 0 )

Wait until a connection request completes, or until the specified timeout elapses.

Use this function after issuing a call to Connect() with wait set to false.

Parameters

  seconds | Number of seconds to wait. If -1, it will wait for the default timeout, as set with wxSocketBase::SetTimeout().
  milliseconds | Number of milliseconds to wait.

Returns
  WaitOnConnect() returns true if the connection request completes. This does not necessarily mean that the connection was successfully established; it might also happen that the connection was refused by the peer. Use wxSocketBase::IsConnected() to distinguish between these two situations.
  If the timeout elapses, WaitOnConnect() returns false.
  These semantics allow code like this:
  // Issue the connection request
  client->Connect(addr, false);
  // Wait until the request completes or until we decide to give up
  bool waitmore = true;
  while ( !client->WaitOnConnect(seconds, millis) && waitmore )
  {
  // possibly give some feedback to the user,
  // and update waitmore as needed.
  }
  bool success = client->IsConnected();