+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name: socket.tex
+%% Purpose: wxSocket docs
+%% Author: Guillermo Rodriguez Garcia <guille@iies.es>
+%% Modified by:
+%% Created: 1999
+%% RCS-ID: $Id$
+%% Copyright: (c) wxWindows team
+%% Licence: wxWindows licence
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\section{\class{wxSocketBase}}\label{wxsocketbase}
+wxSocketBase is the base class for all socket-related objects, and it
+defines all basic IO functionality.
+
\wxheading{Derived from}
\helpref{wxEvtHandler}{wxevthandler}
necessary.
The {\bf wxSOCKET\_OUTPUT} event is issued when a socket is first
-connected with Connect or accepted with Accept. After that, new
+connected with \helpref{Connect}{wxsocketclientconnect} or accepted
+with \helpref{Accept}{wxsocketserveraccept}. After that, new
events will be generated only after an output operation fails
with {\bf wxSOCKET\_WOULDBLOCK} and buffer space becomes available
again. This means that the application should assume that it
that it was closed by the peer. Also, this event will be issued if
a delayed connection request fails.
-% ---------------------------------------------------------------------------
-% Event handling
-% ---------------------------------------------------------------------------
\wxheading{Event handling}
-To process events from a socket, use the following event handler macro to direct
-input to member functions that take a \helpref{wxSocketEvent}{wxsocketevent} argument.
+To process events coming from a socket object, use the following event
+handler macro to direct events to member functions that take a
+\helpref{wxSocketEvent}{wxsocketevent} argument.
\twocolwidtha{7cm}%
\begin{twocollist}\itemsep=0pt
-\twocolitem{{\bf EVT\_SOCKET(id, func)}}{A socket event occured.}
+\twocolitem{{\bf EVT\_SOCKET(id, func)}}{Process a wxEVT\_SOCKET event.}
\end{twocollist}
-% ---------------------------------------------------------------------------
-% See also ...
-% ---------------------------------------------------------------------------
\wxheading{See also}
\helpref{wxSocketEvent}{wxsocketevent},
\helpref{wxSocketClient}{wxsocketclient},
-\helpref{wxSocketServer}{wxsocketserver}
+\helpref{wxSocketServer}{wxsocketserver},
+\helpref{Sockets sample}{samplesockets}
% ---------------------------------------------------------------------------
-% Members
+% Function groups
% ---------------------------------------------------------------------------
-\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxSocketBase::wxSocketBase}
+\latexignore{\rtfignore{\wxheading{Function groups}}}
-\func{}{wxSocketBase}{\void}
+\membersection{Construction and destruction}
-Default constructor. Don't use it; use \helpref{wxSocketClient}{wxsocketclient}
-or \helpref{wxSocketServer}{wxsocketserver}.
+\helpref{wxSocketBase}{wxsocketbaseconstruct}\\
+\helpref{\destruct{wxSocketBase}}{wxsocketbasedestruct}
-\membersection{wxSocketBase::\destruct{wxSocketBase}}
+\membersection{Socket state}
-\func{}{\destruct{wxSocketBase}}{\void}
+Functions to retrieve current state and miscellaneous info.
-Destroys the wxSocketBase object.
+\helpref{Error}{wxsocketbaseerror}\\
+\helpref{GetLocal}{wxsocketbasegetlocal}\\
+\helpref{GetPeer}{wxsocketbasegetpeer}
+\helpref{IsConnected}{wxsocketbaseisconnected}\\
+\helpref{IsData}{wxsocketbaseisdata}\\
+\helpref{IsDisconnected}{wxsocketbaseisdisconnected}\\
+\helpref{LastCount}{wxsocketbaselastcount}\\
+\helpref{LastError}{wxsocketbaselasterror}\\
+\helpref{Ok}{wxsocketbaseok}\\
+\helpref{SaveState}{wxsocketbasesavestate}\\
+\helpref{RestoreState}{wxsocketbaserestorestate}
-% ---------------------------------------------------------------------------
-% State functions
-% ---------------------------------------------------------------------------
+\membersection{Basic IO}
-%
-% SetFlags
-%
+Functions that perform basic IO functionality.
-\membersection{wxSocketBase::SetFlags}\label{wxsocketbasesetflags}
+\helpref{Close}{wxsocketbaseclose}\\
+\helpref{Discard}{wxsocketbasediscard}\\
+\helpref{Peek}{wxsocketbasepeek}\\
+\helpref{Read}{wxsocketbaseread}\\
+\helpref{ReadMsg}{wxsocketbasereadmsg}\\
+\helpref{Unread}{wxsocketbaseunread}\\
+\helpref{Write}{wxsocketbasewrite}\\
+\helpref{WriteMsg}{wxsocketbasewritemsg}
-\func{void}{SetFlags}{\param{wxSocketBase::wxSockFlags}{ flags}}
+Functions that perform a timed wait on a certain IO condition.
-\twocolwidtha{7cm}
-\begin{twocollist}\itemsep=0pt
-\twocolitem{{\bf wxSOCKET\_NONE}}{Normal functionality.}
-\twocolitem{{\bf wxSOCKET\_NOWAIT}}{Read/write as much data as possible and return immediately.}
-\twocolitem{{\bf wxSOCKET\_WAITALL}}{Wait for all required data to be read/written unless an error occurs.}
-\twocolitem{{\bf wxSOCKET\_BLOCK}}{Block the GUI (do not wxYield) while reading/writing data.}
-\end{twocollist}
+\helpref{Wait}{wxsocketbasewait}\\
+\helpref{WaitForRead}{wxsocketbasewaitforread}\\
+\helpref{WaitForWrite}{wxsocketbasewaitforwrite}\\
+\helpref{WaitForLost}{wxsocketbasewaitforlost}
-A brief overview on how to use these flags follows.
+Functions that allow applications to customize socket IO as needed.
-If no flag is specified (this is the same as {\bf wxSOCKET\_NONE}),
-IO calls will return after some data has been read or written, even
-when the transfer might not be complete. This is the same as issuing
-exactly one blocking low-level call to recv() or send(). Note that
-blocking here refers to when the function returns, not to whether
-the GUI blocks during this time.
+\helpref{SetFlags}{wxsocketbasesetflags}\\
+\helpref{SetTimeout}{wxsocketbasesettimeout}
-If {\bf wxSOCKET\_NOWAIT} is specified, IO calls will return immediately.
-Read operations will retrieve only available data. Write operations will
-write as much data as possible, depending on how much space is available
-in the output buffer. This is the same as issuing exactly one nonblocking
-low-level call to recv() or send(). Note that nonblocking here refers to
-when the function returns, not to whether the GUI blocks during this time.
+\membersection{Handling socket events}
-If {\bf wxSOCKET\_WAITALL} is specified, IO calls won't return until ALL
-the data has been read or written (or until an error occurs), blocking if
-necessary, and issuing several low level calls if necessary. This is the
-same as having a loop which makes as many blocking low-level calls to
-recv() or send() as needed so as to transfer all the data. Note that
-"blocking" here refers to when the function returns, not to whether
-the GUI blocks during this time.
+Functions that allow applications to receive socket events.
-The {\bf wxSOCKET\_BLOCK} flag controls whether the GUI blocks during
-IO operations. If this flag is not used, then the application must take
-extra care to avoid unwanted reentrance.
+\helpref{Notify}{wxsocketbasenotify}\\
+\helpref{SetNotify}{wxsocketbasesetnotify}\\
+\helpref{SetEventHandler}{wxsocketbaseseteventhandler}
-So:
+Callback functions are also available, but they are provided for backwards
+compatibility only. Their use is discouraged in favour of events, and should
+be considered deprecated.
-{\bf wxSOCKET\_NONE} will try to read at least SOME data, no matter how much.
+\helpref{Callback}{wxsocketbasecallback}\\
+\helpref{CallbackData}{wxsocketbasecallbackdata}
-{\bf wxSOCKET\_NOWAIT} will always return immediately, even if it cannot
-read or write ANY data.
-{\bf wxSOCKET\_WAITALL} will only return when it has read or written ALL
-the data.
+% ---------------------------------------------------------------------------
+% Members here
+% ---------------------------------------------------------------------------
-{\bf wxSOCKET\_BLOCK} has nothing to do with the previous flags and
-it controls whether the GUI blocks.
+\helponly{\insertatlevel{2}{
-%
-% SetNotify
-%
-\membersection{wxSocketBase::SetNotify}\label{wxsocketbasesetnotify}
+\wxheading{Members}
-\func{void}{SetNotify}{\param{wxSocketEventFlags}{ flags}}
+}}
-SetNotify specifies which socket events are to be sent to the event handler.
-The {\it flags} parameter is a combination of flags ORed toghether. The
-following flags can be used:
+\membersection{wxSocketBase::wxSocketBase}\label{wxsocketbaseconstruct}
-\twocolwidtha{7cm}
-\begin{twocollist}\itemsep=0pt
-\twocolitem{{\bf wxSOCKET\_INPUT\_FLAG}}{to receive wxSOCKET\_INPUT}
-\twocolitem{{\bf wxSOCKET\_OUTPUT\_FLAG}}{to receive wxSOCKET\_OUTPUT}
-\twocolitem{{\bf wxSOCKET\_CONNECTION\_FLAG}}{to receive wxSOCKET\_CONNECTION}
-\twocolitem{{\bf wxSOCKET\_LOST\_FLAG}}{to receive wxSOCKET\_LOST}
-\end{twocollist}
+\func{}{wxSocketBase}{\void}
-For example:
+Default constructor. Don't use it directly; instead, use
+\helpref{wxSocketClient}{wxsocketclient} to construct a socket client, or
+\helpref{wxSocketServer}{wxsocketserver} to construct a socket server.
+
+\membersection{wxSocketBase::\destruct{wxSocketBase}}\label{wxsocketbasedestruct}
+
+\func{}{\destruct{wxSocketBase}}{\void}
+
+Destructor.
+
+%
+% Callback
+%
+\membersection{wxSocketBase::Callback}\label{wxsocketbasecallback}
+
+\func{wxSocketBase::wxSockCbk}{Callback}{\param{wxSocketBase::wxSockCbk}{ callback}}
+
+You can setup a callback function to be called when an event occurs.
+The function will be called only for those events for which notification
+has been enabled with \helpref{Notify}{wxsocketbasenotify} and
+\helpref{SetNotify}{wxsocketbasesetnotify}. The prototype of the
+callback must be as follows:
\begin{verbatim}
- sock.SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
+void SocketCallback(wxSocketBase& sock, wxSocketNotify evt, char *cdata);
\end{verbatim}
-In this example, the user will be notified about incoming socket data and
-whenever the connection is closed.
+The first parameter is a reference to the socket object in which the
+event occured. The second parameter tells you which event occured.
+(See \helpref{wxSocket events}{wxsocketbase}). The third parameter
+is the user data you specified using
+\helpref{CallbackData}{wxsocketbasecallbackdata}.
-For more information on socket events see \helpref{wxSocket events}{wxsocketbase}.
+Note that events are preferred over callbacks where possible.
+
+\wxheading{Return value}
+
+A pointer to the previous callback.
+
+\wxheading{See also}
+
+\helpref{wxSocketBase::CallbackData}{wxsocketbasecallbackdata},
+\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
+\helpref{wxSocketBase::Notify}{wxsocketbasenotify}
%
-% SetTimeout
+% CallbackData
%
-\membersection{wxSocketBase::SetTimeout}\label{wxsocketbasesettimeout}
+\membersection{wxSocketBase::CallbackData}\label{wxsocketbasecallbackdata}
-\func{void}{SetTimeout}{\param{int }{seconds}}
+\func{char *}{CallbackData}{\param{char *}{cdata}}
+
+This function sets the the user data which will be passed to a
+callback function set via \helpref{Callback}{wxsocketbasecallback}.
+
+Note that events are preferred over callbacks where possible.
+
+\wxheading{Return value}
+
+A pointer to the previous user data.
-This function sets the default socket timeout in seconds. This
-timeout applies to IO calls, and also to Wait() functions if you
-don't specify a wait interval. If you never use SetTimeout(), the
-default timeout will be 10 minutes.
+\helpref{wxSocketBase::Callback}{wxsocketbasecallback},
+\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
+\helpref{wxSocketBase::Notify}{wxsocketbasenotify}
%
-% Notify
+% Close
%
-\membersection{wxSocketBase::Notify}\label{wxsocketbasenotify}
+\membersection{wxSocketBase::Close}\label{wxsocketbaseclose}
-\func{void}{Notify}{\param{bool}{ notify}}
+\func{void}{Close}{\void}
-Notify will enable (notify is TRUE) or disable (notify is FALSE) the propagation
-of socket events.
+This function shuts down the socket, disabling further transmission and
+reception of data; it also disables events for the socket and frees the
+associated system resources. If you destroy a socket, Close is automatically
+called.
+
+\wxheading{Remark/Warning}
+
+Although Close immediately disables events for the socket, it is possible
+that event messages may be waiting in the application's event queue. The
+application must therefore be prepared to handle socket event messages
+even after calling Close.
-%
-% Ok
%
+% Discard
+%
+\membersection{wxSocketBase::Discard}\label{wxsocketbasediscard}
-\membersection{wxSocketBase::Ok}\label{wxsocketbaseok}
+\func{wxSocketBase\&}{Discard}{\void}
-\constfunc{bool}{Ok}{\void}
+This function simply deletes all bytes in the incoming queue. This function
+always returns immediately and its operation is not affected by IO flags.
-Returns TRUE if the socket is initialized and ready and FALSE in other
-cases.
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually discarded.
+If you use \helpref{Error}{wxsocketbaseerror}, it will always return FALSE.
+
+%
+% Error
+%
\membersection{wxSocketBase::Error}\label{wxsocketbaseerror}
\constfunc{bool}{Error}{\void}
Returns TRUE if an error occured in the last IO operation.
-The following operations update the Error() status:
-Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard.
+Use this function to check for an error condition after one of the
+following calls: Discard, Peek, Read, ReadMsg, Unread, Write, WriteMsg.
+
+%
+% GetLocal
+%
+\membersection{wxSocketBase::GetLocal}\label{wxsocketbasegetlocal}
-\membersection{wxSocketBase::IsConnected}\label{wxsocketbaseconnected}
+\constfunc{bool}{GetLocal}{\param{wxSockAddress\& }{addr\_man}}
+
+This function returns the local address field of the socket. The local
+address field contains the complete local address of the socket (local
+address, local port, ...).
+
+\wxheading{Return value}
+
+It returns TRUE if no errors happened, FALSE otherwise.
+
+%
+% GetPeer
+%
+\membersection{wxSocketBase::GetPeer}\label{wxsocketbasegetpeer}
+
+\constfunc{bool}{GetPeer}{\param{wxSockAddress\& }{addr\_man}}
+
+This function returns the peer address field of the socket. The peer
+address field contains the complete peer host address of the socket
+(address, port, ...).
+
+\wxheading{Return value}
+
+It returns TRUE if no errors happened, FALSE otherwise.
+
+%
+% IsConnected
+%
+\membersection{wxSocketBase::IsConnected}\label{wxsocketbaseisconnected}
\constfunc{bool}{IsConnected}{\void}
Returns TRUE if the socket is connected.
+%
+% IsData
+%
\membersection{wxSocketBase::IsData}\label{wxsocketbaseisdata}
\constfunc{bool}{IsData}{\void}
-Returns TRUE if there is data available to be read.
+Returns TRUE if the socket is readable. This might mean that
+queued data is available for reading or, for streamed sockets, that
+the connection has been closed, so that a \helpref{Read}{wxsocketbaseread},
+\helpref{ReadMsg}{wxsocketbasereadmsg} or \helpref{Peek}{wxsocketbasepeek}
+operation is guaranteed to complete immediately (unless the
+{\bf wxSOCKET\_WAITALL} flag is set).
-\membersection{wxSocketBase::IsDisconnected}\label{wxsocketbasedisconnected}
+\membersection{wxSocketBase::IsDisconnected}\label{wxsocketbaseisdisconnected}
+%
+% IsDisconnected
+%
\constfunc{bool}{IsDisconnected}{\void}
-Returns TRUE if the socket is disconnected.
-
-\membersection{wxSocketBase::IsNoWait}\label{wxsocketbasenowait}
-
-\constfunc{bool}{IsNoWait}{\void}
-
-Returns TRUE if the socket mustn't wait.
+Returns TRUE if the socket is not connected.
\membersection{wxSocketBase::LastCount}\label{wxsocketbaselastcount}
+%
+% LastCount
+%
\constfunc{wxUint32}{LastCount}{\void}
Returns the number of bytes read or written by the last IO call.
-The following operations update the LastCount() value:
-Read, Write, ReadMsg, WriteMsg, Peek, Unread, Discard.
+Use this function to get the number of bytes actually transferred
+after using one of the following IO calls: Discard, Peek, Read,
+ReadMsg, Unread, Write, WriteMsg.
+%
+% LastError
+%
\membersection{wxSocketBase::LastError}\label{wxsocketbaselasterror}
\constfunc{wxSocketError}{LastError}{\void}
Please note that this function merely returns the last error code,
but it should not be used to determine if an error has occured (this
is because successful operations do not change the LastError value).
-Use Error, instead of LastError, to determine if the last IO call
-failed. If Error returns TRUE, use LastError to discover the
-cause of the error.
+Use \helpref{Error}{wxsocketbaseerror} first, in order to determine
+if the last IO call failed. If this returns TRUE, use LastError
+to discover the cause of the error.
-% ---------------------------------------------------------------------------
-% IO calls
-% ---------------------------------------------------------------------------
%
-% Peek
+% Notify
%
-\membersection{wxSocketBase::Peek}\label{wxsocketbasepeek}
+\membersection{wxSocketBase::Notify}\label{wxsocketbasenotify}
-\func{wxSocketBase\&}{Peek}{\param{char *}{ buffer}, \param{wxUint32}{ nbytes}}
+\func{void}{Notify}{\param{bool}{ notify}}
-This function peeks a buffer of {\it nbytes} bytes from the socket.
-Peeking a buffer doesn't delete it from the socket input queue.
+According to the {\it notify} value, this function enables
+or disables socket events. If {\it notify} is TRUE, the events
+configured with \helpref{SetNotify}{wxsocketbasesetnotify} will
+be sent to the application. If {\it notify} is FALSE; no events
+will be sent.
-Use LastCount to verify the number of bytes actually peeked.
+%
+% Ok
+%
+\membersection{wxSocketBase::Ok}\label{wxsocketbaseok}
-Use Error to determine if the operation succeeded.
+\constfunc{bool}{Ok}{\void}
-\wxheading{Parameters}
+Returns TRUE if the socket is initialized and ready and FALSE in other
+cases.
-\docparam{buffer}{Buffer where to put peeked data.}
+%
+% RestoreState
+%
+\membersection{wxSocketBase::RestoreState}\label{wxsocketbaserestorestate}
-\docparam{nbytes}{Number of bytes.}
+\func{void}{RestoreState}{\void}
-\wxheading{Return value}
+This function restores the previous state of the socket, as saved
+with \helpref{SaveState}{wxsocketbasesavestate}
-Returns a reference to the current object.
+Calls to SaveState and RestoreState can be nested.
-\wxheading{Remark/Warning}
+\wxheading{See also}
-The exact behaviour of wxSocketBase::Peek() depends on the combination
-of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
+\helpref{wxSocketBase::SaveState}{wxsocketbasesavestate}
+
+%
+% SaveState
+%
+\membersection{wxSocketBase::SaveState}\label{wxsocketbasesavestate}
+
+\func{void}{SaveState}{\void}
+
+This function saves the current state of the socket in a stack. Socket
+state includes flags, as set with \helpref{SetFlags}{wxsocketbasesetflags},
+event mask, as set with \helpref{SetNotify}{wxsocketbasesetnotify} and
+\helpref{Notify}{wxsocketbasenotify}, and current settings for the
+asynchronous callbacks, as set with \helpref{Callback}{wxsocketbasecallback}
+and \helpref{CallbackData}{wxsocketbasecallbackdata}.
+
+Calls to SaveState and RestoreState can be nested.
\wxheading{See also}
-\helpref{wxSocketBase::Error}{wxsocketbaseerror},
-\helpref{wxSocketBase::LastError}{wxsocketbaselasterror},
-\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
-\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
+\helpref{wxSocketBase::RestoreState}{wxsocketbaserestorestate}
%
-% Read
+% SetEventHandler
%
-\membersection{wxSocketBase::Read}\label{wxsocketbaseread}
-
-\func{wxSocketBase\&}{Read}{\param{char *}{ buffer}, \param{wxUint32}{ nbytes}}
+\membersection{wxSocketBase::SetEventHandler}\label{wxsocketbaseseteventhandler}
-This function reads a buffer of {\it nbytes} bytes from the socket.
+\func{void}{SetEventHandler}{\param{wxEvtHandler\&}{ evt\_hdlr}, \param{int}{ id = -1}}
-Use LastCount to verify the number of bytes actually read.
+Sets an event handler to be called when a socket event occurs. The
+handler will be called for those events for which notification is
+enabled with \helpref{SetNotify}{wxsocketbasesetnotify} and
+\helpref{Notify}{wxsocketbasenotify}.
-Use Error to determine if the operation succeeded.
+You can also specify a callback function to be called when an event
+occurs, although if possible, events should be used instead of callbacks.
+See \helpref{Callback}{wxsocketbasecallback} and
+\helpref{CallbackData}{wxsocketbasecallbackdata}.
\wxheading{Parameters}
-\docparam{buffer}{Buffer where to put read data.}
+\docparam{evt\_hdlr}{Specifies the event handler you want to use.}
-\docparam{nbytes}{Number of bytes.}
+\docparam{id}{The id of socket event.}
-\wxheading{Return value}
+\wxheading{See also}
-Returns a reference to the current object.
+\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
+\helpref{wxSocketBase::Notify}{wxsocketbasenotify},
+\helpref{wxSocketEvent}{wxsocketevent},
+\helpref{wxEvtHandler}{wxevthandler},
+\helpref{wxSocketBase::Callback}{wxsocketbasecallback},
+\helpref{wxSocketBase::CallbackData}{wxsocketbasecallbackdata}
-\wxheading{Remark/Warning}
+%
+% SetFlags
+%
+\membersection{wxSocketBase::SetFlags}\label{wxsocketbasesetflags}
-The exact behaviour of wxSocketBase::Read() depends on the combination
-of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
+\func{void}{SetFlags}{\param{wxSocketBase::wxSockFlags}{ flags}}
-\wxheading{See also}
+\twocolwidtha{7cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{{\bf wxSOCKET\_NONE}}{Normal functionality.}
+\twocolitem{{\bf wxSOCKET\_NOWAIT}}{Read/write as much data as possible and return immediately.}
+\twocolitem{{\bf wxSOCKET\_WAITALL}}{Wait for all required data to be read/written unless an error occurs.}
+\twocolitem{{\bf wxSOCKET\_BLOCK}}{Block the GUI (do not yield) while reading/writing data.}
+\end{twocollist}
-\helpref{wxSocketBase::Error}{wxsocketbaseerror},
-\helpref{wxSocketBase::LastError}{wxsocketbaselasterror},
-\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
-\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
+A brief overview on how to use these flags follows.
+
+If no flag is specified (this is the same as {\bf wxSOCKET\_NONE}),
+IO calls will return after some data has been read or written, even
+when the transfer might not be complete. This is the same as issuing
+exactly one blocking low-level call to recv() or send(). Note that
+{\it blocking} here refers to when the function returns, not to whether
+the GUI blocks during this time.
+
+If {\bf wxSOCKET\_NOWAIT} is specified, IO calls will return immediately.
+Read operations will retrieve only available data. Write operations will
+write as much data as possible, depending on how much space is available
+in the output buffer. This is the same as issuing exactly one nonblocking
+low-level call to recv() or send(). Note that {\it nonblocking} here
+refers to when the function returns, not to whether the GUI blocks during
+this time.
+
+If {\bf wxSOCKET\_WAITALL} is specified, IO calls won't return until ALL
+the data has been read or written (or until an error occurs), blocking if
+necessary, and issuing several low level calls if necessary. This is the
+same as having a loop which makes as many blocking low-level calls to
+recv() or send() as needed so as to transfer all the data. Note that
+{\it blocking} here refers to when the function returns, not to whether
+the GUI blocks during this time.
+
+The {\bf wxSOCKET\_BLOCK} flag controls whether the GUI blocks during
+IO operations. If this flag is specified, the socket will not yield
+during IO calls, so the GUI will remain blocked until the operation
+completes. If it is not used, then the application must take extra
+care to avoid unwanted reentrance.
+
+So:
+
+{\bf wxSOCKET\_NONE} will try to read at least SOME data, no matter how much.
+
+{\bf wxSOCKET\_NOWAIT} will always return immediately, even if it cannot
+read or write ANY data.
+
+{\bf wxSOCKET\_WAITALL} will only return when it has read or written ALL
+the data.
+
+{\bf wxSOCKET\_BLOCK} has nothing to do with the previous flags and
+it controls whether the GUI blocks.
%
-% Write
+% SetNotify
%
-\membersection{wxSocketBase::Write}\label{wxsocketbasewrite}
+\membersection{wxSocketBase::SetNotify}\label{wxsocketbasesetnotify}
-\func{wxSocketBase\&}{Write}{\param{const char *}{ buffer}, \param{wxUint32}{ nbytes}}
+\func{void}{SetNotify}{\param{wxSocketEventFlags}{ flags}}
-This function writes a buffer of {\it nbytes} bytes to the socket.
+SetNotify specifies which socket events are to be sent to the event handler.
+The {\it flags} parameter is a combination of flags ORed toghether. The
+following flags can be used:
+
+\twocolwidtha{7cm}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{{\bf wxSOCKET\_INPUT\_FLAG}}{to receive wxSOCKET\_INPUT}
+\twocolitem{{\bf wxSOCKET\_OUTPUT\_FLAG}}{to receive wxSOCKET\_OUTPUT}
+\twocolitem{{\bf wxSOCKET\_CONNECTION\_FLAG}}{to receive wxSOCKET\_CONNECTION}
+\twocolitem{{\bf wxSOCKET\_LOST\_FLAG}}{to receive wxSOCKET\_LOST}
+\end{twocollist}
+
+For example:
+
+\begin{verbatim}
+ sock.SetNotify(wxSOCKET_INPUT_FLAG | wxSOCKET_LOST_FLAG);
+ sock.Notify(TRUE);
+\end{verbatim}
+
+In this example, the user will be notified about incoming socket data and
+whenever the connection is closed.
-Use LastCount to verify the number of bytes actually written.
+For more information on socket events see \helpref{wxSocket events}{wxsocketbase}.
-Use Error to determine if the operation succeeded.
+%
+% SetTimeout
+%
+\membersection{wxSocketBase::SetTimeout}\label{wxsocketbasesettimeout}
+
+\func{void}{SetTimeout}{\param{int }{seconds}}
+
+This function sets the default socket timeout in seconds. This timeout
+applies to all IO calls, and also to the \helpref{Wait}{wxsocketbasewait}
+family of functions if you don't specify a wait interval. Initially, the
+default is set to 10 minutes.
+
+%
+% Peek
+%
+\membersection{wxSocketBase::Peek}\label{wxsocketbasepeek}
+
+\func{wxSocketBase\&}{Peek}{\param{char *}{ buffer}, \param{wxUint32}{ nbytes}}
+
+This function peeks a buffer of {\it nbytes} bytes from the socket.
+Peeking a buffer doesn't delete it from the socket input queue.
+
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually peeked.
+
+Use \helpref{Error}{wxsocketbaseerror} to determine if the operation succeeded.
\wxheading{Parameters}
-\docparam{buffer}{Buffer with the data to be sent.}
+\docparam{buffer}{Buffer where to put peeked data.}
\docparam{nbytes}{Number of bytes.}
\wxheading{Remark/Warning}
-The exact behaviour of wxSocketBase::Write() depends on the combination
-of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
+The exact behaviour of wxSocketBase::Peek depends on the combination
+of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
\wxheading{See also}
\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
%
-% WriteMsg
+% Read
%
-\membersection{wxSocketBase::WriteMsg}\label{wxsocketbasewritemsg}
+\membersection{wxSocketBase::Read}\label{wxsocketbaseread}
-\func{wxSocketBase\&}{WriteMsg}{\param{const char *}{ buffer}, \param{wxUint32}{ nbytes}}
+\func{wxSocketBase\&}{Read}{\param{char *}{ buffer}, \param{wxUint32}{ nbytes}}
-This function writes a buffer of {\it nbytes} bytes from the socket, but it
-writes a short header before so that ReadMsg knows how much data should it
-actually read. So, a buffer sent with WriteMsg {\bf must} be read with
-ReadMsg. This function always waits for the entire buffer to be sent,
-unless an error occurs.
+This function reads a buffer of {\it nbytes} bytes from the socket.
-Use LastCount to verify the number of bytes actually written.
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually read.
-Use Error to determine if the operation succeeded.
+Use \helpref{Error}{wxsocketbaseerror} to determine if the operation succeeded.
\wxheading{Parameters}
-\docparam{buffer}{Buffer with the data to be sent.}
+\docparam{buffer}{Buffer where to put read data.}
\docparam{nbytes}{Number of bytes.}
\wxheading{Remark/Warning}
-wxSocketBase::WriteMsg() will behave as if the {\bf wxSOCKET\_WAITALL} flag
-was always set and it will always ignore the {\bf wxSOCKET\_NOWAIT} flag.
-The exact behaviour of WriteMsg depends on the {\bf wxSOCKET\_BLOCK} flag.
-For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
+The exact behaviour of wxSocketBase::Read depends on the combination
+of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
\wxheading{See also}
\helpref{wxSocketBase::Error}{wxsocketbaseerror},
\helpref{wxSocketBase::LastError}{wxsocketbaselasterror},
\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
-\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags},
-\helpref{wxSocketBase::ReadMsg}{wxsocketbasereadmsg}
+\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
%
% ReadMsg
\func{wxSocketBase\&}{ReadMsg}{\param{char *}{ buffer}, \param{wxUint32}{ nbytes}}
-This function reads a buffer sent by WriteMsg on a socket. If the buffer passed
-to the function isn't big enough, the remaining bytes will be discarded. This
-function always waits for the buffer to be entirely filled, unless an error occurs.
+This function reads a buffer sent by \helpref{WriteMsg}{wxsocketbasewritemsg}
+on a socket. If the buffer passed to the function isn't big enough, the
+remaining bytes will be discarded. This function always waits for the
+buffer to be entirely filled, unless an error occurs.
-Use LastCount to verify the number of bytes actually read.
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually read.
-Use Error to determine if the operation succeeded.
+Use \helpref{Error}{wxsocketbaseerror} to determine if the operation succeeded.
\wxheading{Parameters}
\docparam{buffer}{Buffer where to put read data.}
-\docparam{nbytes}{Number of bytes allocated for the buffer.}
+\docparam{nbytes}{Size of the buffer.}
\wxheading{Return value}
\wxheading{Remark/Warning}
-wxSocketBase::ReadMsg() will behave as if the {\bf wxSOCKET\_WAITALL} flag
+wxSocketBase::ReadMsg will behave as if the {\bf wxSOCKET\_WAITALL} flag
was always set and it will always ignore the {\bf wxSOCKET\_NOWAIT} flag.
The exact behaviour of ReadMsg depends on the {\bf wxSOCKET\_BLOCK} flag.
For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
This function unreads a buffer. That is, the data in the buffer is put back
in the incoming queue. This function is not affected by wxSocket flags.
-If you use LastCount, it will always return {\it nbytes}.
+If you use \helpref{LastCount}{wxsocketbaselastcount}, it will always return {\it nbytes}.
-If you use Error, it will always return FALSE.
+If you use \helpref{Error}{wxsocketbaseerror}, it will always return FALSE.
\wxheading{Parameters}
\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}
%
-% Discard
+% Wait
%
-\membersection{wxSocketBase::Discard}\label{wxsocketbasediscard}
-
-\func{wxSocketBase\&}{Discard}{\void}
-
-This function simply deletes all bytes in the incoming queue. This function
-always returns immediately and its operation is not affected by IO flags.
-
-Use LastCount to see the number of bytes discarded.
-
-If you use Error, it will always return FALSE.
-
-% ---------------------------------------------------------------------------
-% Wait functions
-% ---------------------------------------------------------------------------
\membersection{wxSocketBase::Wait}\label{wxsocketbasewait}
\func{bool}{Wait}{\param{long}{ seconds = -1}, \param{long}{ millisecond = 0}}
-This function waits until one of the following conditions is true: there
-is data available for reading; the output buffer is empty (you can send
-new data); the connection has been lost; an incoming connection arrived
-(only for servers); a connection request has completed (only for clients).
-It is usually better to use the individual Wait functions to wait for the
-required condition.
+This function waits until one of the following conditions is TRUE. Note
+that it is recommended to use the individual Wait functions to wait for
+the required condition, instead of this one.
+
+\begin{itemize}
+\item The socket becomes readable.
+\item The socket becomes writable.
+\item An ongoing connection request has completed (only for clients)
+\item An incoming connection request has arrived (only for servers)
+\item The connection has been closed.
+\end{itemize}
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\wxheading{Return value}
-Returns TRUE if an event occured, FALSE if the timeout was reached.
+Returns TRUE when any of the above conditions is satisfied,
+FALSE if the timeout was reached.
\wxheading{See also}
\func{bool}{WaitForRead}{\param{long}{ seconds = -1}, \param{long}{ millisecond = 0}}
-This function waits until there is data available to be read.
+This function waits until the socket is readable. This might mean that
+queued data is available for reading or, for streamed sockets, that
+the connection has been closed, so that a \helpref{Read}{wxsocketbaseread},
+\helpref{ReadMsg}{wxsocketbasereadmsg} or \helpref{Peek}{wxsocketbasepeek}
+operation is guaranteed to complete immediately (unless the
+{\bf wxSOCKET\_WAITALL} flag is set).
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\wxheading{Return value}
-Returns TRUE if there is data to be read, FALSE if the timeout was reached.
+Returns TRUE if there is data to be read, FALSE if the timeout was reached
+or an error occured.
\wxheading{See also}
\func{bool}{WaitForWrite}{\param{long}{ seconds = -1}, \param{long}{ millisecond = 0}}
-This function waits until you can write to the socket.
+This function waits until the socket becomes writable. This might mean that
+the socket is ready to send new data, or for streamed sockets, that the
+connection has been closed, so that a \helpref{Write}{wxsocketbasewrite}
+or \helpref{ReadMsg}{wxsocketbasewritemsg} operation is guaranteed to
+complete immediately (unless the {\bf wxSOCKET\_WAITALL} flag is set).
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\wxheading{Return value}
-Returns TRUE if you can write to the socket, FALSE if the timeout was reached.
+Returns TRUE if the socket becomes writable, FALSE if the timeout was reached.
\wxheading{See also}
\func{bool}{Wait}{\param{long}{ seconds = -1}, \param{long}{ millisecond = 0}}
-This function waits until the connection is lost. This may happen if the
-peer closes the connection or if the connection breaks.
+This function waits until the connection is lost. This may happen if
+the peer gracefully closes the connection or if the connection breaks.
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\helpref{wxSocketBase::WaitForWrite}{wxsocketbasewaitforwrite},
\helpref{wxSocketBase::WaitForLost}{wxsocketbasewaitforlost}
-% ---------------------------------------------------------------------------
-% Socket state
-% ---------------------------------------------------------------------------
-
%
-% RestoreState
+% Write
%
-\membersection{wxSocketBase::RestoreState}\label{wxsocketbaserestorestate}
-
-\func{void}{RestoreState}{\void}
-
-This function restores the previous state of the socket, as saved
-with SaveState.
-
-Calls to SaveState / RestoreState can be nested.
+\membersection{wxSocketBase::Write}\label{wxsocketbasewrite}
-\wxheading{See also}
+\func{wxSocketBase\&}{Write}{\param{const char *}{ buffer}, \param{wxUint32}{ nbytes}}
-\helpref{wxSocketBase::SaveState}{wxsocketbasesavestate}
+This function writes a buffer of {\it nbytes} bytes to the socket.
-%
-% SaveState
-%
-\membersection{wxSocketBase::SaveState}\label{wxsocketbasesavestate}
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually written.
-\func{void}{SaveState}{\void}
+Use \helpref{Error}{wxsocketbaseerror} to determine if the operation succeeded.
-This function saves the current state of the socket object in a stack:
-actually it saves all flags (those set with SetFlags, SetNotify, Notify)
-and the state of the asynchronous callbacks (Callback, CallbackData).
+\wxheading{Parameters}
-Calls to SaveState / RestoreState can be nested.
+\docparam{buffer}{Buffer with the data to be sent.}
-\wxheading{See also}
+\docparam{nbytes}{Number of bytes.}
-\helpref{wxSocketBase::RestoreState}{wxsocketbaserestorestate}
+\wxheading{Return value}
-%
-% GetLocal
-%
-\membersection{wxSocketBase::GetLocal}{wxsocketbasegetlocal}
+Returns a reference to the current object.
-\constfunc{bool}{GetLocal}{\param{wxSockAddress\& }{addr\_man}}
+\wxheading{Remark/Warning}
-This function returns the local address field of the socket. The local
-address field contains the complete local address of the socket (local
-address, local port, ...).
+The exact behaviour of wxSocketBase::Write depends on the combination
+of flags being used. For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
-\wxheading{Return value}
+\wxheading{See also}
-It returns TRUE if no errors happened, FALSE otherwise.
+\helpref{wxSocketBase::Error}{wxsocketbaseerror},
+\helpref{wxSocketBase::LastError}{wxsocketbaselasterror},
+\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
+\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}
%
-% GetPeer
+% WriteMsg
%
-\membersection{wxSocketBase::GetPeer}{wxsocketbasegetlocal}
-
-\constfunc{bool}{GetPeer}{\param{wxSockAddress\& }{addr\_man}}
-
-This function returns the peer address field of the socket. The peer
-address field contains the complete peer host address of the socket
-(address, port, ...).
-
-\wxheading{Return value}
-
-It returns TRUE if no errors happened, FALSE otherwise.
+\membersection{wxSocketBase::WriteMsg}\label{wxsocketbasewritemsg}
-% ---------------------------------------------------------------------------
-% Socket callbacks
-% ---------------------------------------------------------------------------
-\membersection{wxSocketBase::SetEventHandler}\label{wxsocketbaseseteventhandler}
+\func{wxSocketBase\&}{WriteMsg}{\param{const char *}{ buffer}, \param{wxUint32}{ nbytes}}
-\func{void}{SetEventHandler}{\param{wxEvtHandler\&}{ evt\_hdlr}, \param{int}{ id = -1}}
+This function writes a buffer of {\it nbytes} bytes from the socket, but it
+writes a short header before so that \helpref{ReadMsg}{wxsocketbasereadmsg}
+knows how much data should it actually read. So, a buffer sent with WriteMsg
+{\bf must} be read with ReadMsg. This function always waits for the entire
+buffer to be sent, unless an error occurs.
-Sets an event handler to be called when a socket event occurs. The handler
-will be called for those events for which notification is enabled with
-SetNotify and Notify.
+Use \helpref{LastCount}{wxsocketbaselastcount} to verify the number of bytes actually written.
-You can also specify a callback function to be called when an event occurs.
-See \helpref{Callback}{wxsocketbasecallback} and \helpref{CallbackData}{wxsocketbasecallbackdata}.
+Use \helpref{Error}{wxsocketbaseerror} to determine if the operation succeeded.
\wxheading{Parameters}
-\docparam{evt\_hdlr}{Specifies the event handler you want to use.}
-
-\docparam{id}{The id of socket event.}
-
-\wxheading{See also}
-
-\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
-\helpref{wxSocketBase::Notify}{wxsocketbasenotify},
-\helpref{wxSocketEvent}{wxsocketevent},
-\helpref{wxEvtHandler}{wxevthandler},
-\helpref{wxSocketBase::Callback}{wxsocketbasecallback},
-\helpref{wxSocketBase::CallbackData}{wxsocketbasecallbackdata}
-
-\membersection{wxSocketBase::Callback}\label{wxsocketbasecallback}
-
-\func{wxSocketBase::wxSockCbk}{Callback}{\param{wxSocketBase::wxSockCbk}{ callback}}
-
-You can setup a callback function to be called when an event occurs. The function
-will be called only for those events for which notification has been enabled
-with Notify and SetNotify. The prototype of the callback must be as follows:
-
-\begin{verbatim}
-void SocketCallback(wxSocketBase& sock, wxSocketNotify evt, char *cdata);
-\end{verbatim}
+\docparam{buffer}{Buffer with the data to be sent.}
-The first parameter is a reference to the socket object in which the event
-occured. The second parameter tells you which event occured. (See \helpref{wxSocket events}{wxsocketbase}).
-The third parameter is the user data you specified using \helpref{CallbackData}{wxsocketbasecallbackdata}.
+\docparam{nbytes}{Number of bytes to send.}
\wxheading{Return value}
-A pointer to the previous callback.
-
-\wxheading{See also}
-
-\helpref{wxSocketBase::CallbackData}{wxsocketbasecallbackdata},
-\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
-\helpref{wxSocketBase::Notify}{wxsocketbasenotify}
-
-\membersection{wxSocketBase::CallbackData}\label{wxsocketbasecallbackdata}
+Returns a reference to the current object.
-\func{char *}{CallbackData}{\param{char *}{cdata}}
+\wxheading{Remark/Warning}
-This function sets the the user data which will be passed to a
-callback function set via \helpref{Callback}{wxsocketbasecallback}.
+wxSocketBase::WriteMsg will behave as if the {\bf wxSOCKET\_WAITALL} flag
+was always set and it will always ignore the {\bf wxSOCKET\_NOWAIT} flag.
+The exact behaviour of WriteMsg depends on the {\bf wxSOCKET\_BLOCK} flag.
+For a detailed explanation, see \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags}.
-\wxheading{Return value}
+\wxheading{See also}
-A pointer to the previous user data.
+\helpref{wxSocketBase::Error}{wxsocketbaseerror},
+\helpref{wxSocketBase::LastError}{wxsocketbaselasterror},
+\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
+\helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags},
+\helpref{wxSocketBase::ReadMsg}{wxsocketbasereadmsg}
-\helpref{wxSocketBase::Callback}{wxsocketbasecallback},
-\helpref{wxSocketBase::SetNotify}{wxsocketbasesetnotify},
-\helpref{wxSocketBase::Notify}{wxsocketbasenotify}
% ---------------------------------------------------------------------------
% CLASS wxSocketClient
% ---------------------------------------------------------------------------
+
\section{\class{wxSocketClient}}\label{wxsocketclient}
\wxheading{Derived from}
\func{}{wxSocketClient}{\param{wxSockFlags}{ flags = wxSocketBase::NONE}}
-Constructs a new wxSocketClient.
+Constructor.
\wxheading{Parameters}
\func{}{\destruct{wxSocketClient}}{\void}
-Destroys a wxSocketClient object.
+Destructor.
%
% Connect
Connects to a server using the specified address.
-If {\it wait} is TRUE, Connect will wait until the connection completes
-successfully, or until an event occurs. {\bf Warning !} This will block the GUI.
+If {\it wait} is TRUE, Connect will wait until the connection completes.
+{\bf Warning:} This will block the GUI.
If {\it 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 WaitConnection, or catch {\bf wxSOCKET\_CONNECTION}
-events (for successful establishment) and {\bf wxSOCKET\_LOST} events
-(for connection failure).
+To detect this, use \helpref{WaitOnConnect}{wxsocketclientwaitonconnect},
+or catch {\bf wxSOCKET\_CONNECTION} events (for successful establishment)
+and {\bf wxSOCKET\_LOST} events (for connection failure).
\wxheading{Parameters}
\docparam{address}{Address of the server.}
-\docparam{wait}{If TRUE, waits for the connection to be ready.}
+\docparam{wait}{If TRUE, waits for the connection to complete.}
\wxheading{Return value}
If {\it 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 {\bf wxSOCKET\_CONNECTION} and
-{\bf wxSOCKET\_LOST} events.
+with \helpref{WaitOnConnect}{wxsocketclientwaitonconnect} or by watching
+{\bf wxSOCKET\_CONNECTION} and {\bf wxSOCKET\_LOST} events.
\wxheading{See also}
\func{bool}{WaitOnConnect}{\param{long}{ seconds = -1}, \param{long}{ milliseconds = 0}}
-Wait until the connection is succesfully established or until it fails.
-Use this function after a call to Connect with {\it wait} set to FALSE.
+Wait until a connection request completes, or until the specified timeout
+elapses. Use this function after issuing a call to \helpref{Connect}{wxsocketclientconnect}
+with {\it wait} set to FALSE.
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\wxheading{Return value}
-If the connection is succesfully established, it returns TRUE.
+If the connection is succesfully established, returns TRUE.
-If the timeout expires, or if the connection fails, it returns FALSE.
+If the timeout expires, or if the connection fails, returns FALSE.
+To distinguish between these two conditions, use \helpref{IsConnected}{wxsocketbaseisconnected}
\wxheading{See also}
-\helpref{wxSocketClient::Connect}{wxsocketclientconnect}
+\helpref{wxSocketClient::Connect}{wxsocketclientconnect},
+\helpref{wxSocketBase::IsConnected}{wxsocketbaseisconnected}
% ---------------------------------------------------------------------------
% CLASS: wxSocketEvent
\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{{\bf EVT\_SOCKET(id, func)}}{Process a socket event, supplying the member function.}
-\end{twocollist}%
+\end{twocollist}
\wxheading{See also}
\func{}{wxSocketServer}{\param{wxSockAddress\&}{ address}, \param{wxSockFlags}{ flags = wxSocketBase::NONE}}
-Constructs a new wxSocketServer.
+Constructs a new server and tries to bind to the specified {\it address}.
+Before trying to accept new connections, test whether it succeeded with
+\helpref{wxSocketBase::Ok}{wxsocketbaseok}.
\wxheading{Parameters}
\func{}{\destruct{wxSocketServer}}{\void}
-Destroys a wxSocketServer object (it doesn't close the accepted connections).
+Destructor (it doesn't close the accepted connections).
%
% Accept
\func{wxSocketBase *}{Accept}{\param{bool}{ wait = TRUE}}
-Creates a new object wxSocketBase and accepts an incoming connection.
+Accepts an incoming connection request, and creates a new
+\helpref{wxSocketBase}{wxsocketbase} object which represents
+the server-side of the connection.
If {\it wait} is TRUE and there are no pending connections to be
accepted, it will wait for the next incoming connection to arrive.
-{\bf Warning !} This will block the GUI.
+{\bf Warning:} This will block the GUI.
If {\it wait} is FALSE, it will try to accept a pending connection
-if there is one, but it will always return immediately without
-blocking the GUI. If you want to use Accept in this way, you can
-either check for incoming connections with WaitForAccept or watch
-{\bf wxSOCKET\_CONNECTION} events, then call Accept once you know
+if there is one, but it will always return immediately without blocking
+the GUI. If you want to use Accept in this way, you can either check for
+incoming connections with \helpref{WaitForAccept}{wxsocketserverwaitforaccept}
+or catch {\bf wxSOCKET\_CONNECTION} events, then call Accept once you know
that there is an incoming connection waiting to be accepted.
\wxheading{Return value}
\func{bool}{WaitForAccept}{\param{long}{ seconds = -1}, \param{long}{ millisecond = 0}}
This function waits for an incoming connection. Use it if you want to call
-Accept or AcceptWith with {\it wait} set to FALSE, to detect when an incoming
-connection is waiting to be accepted.
+\helpref{Accept}{wxsocketserveraccept} or \helpref{AcceptWith}{wxsocketserveracceptwith}
+with {\it wait} set to FALSE, to detect when an incoming connection is waiting
+to be accepted.
\wxheading{Parameters}
-\docparam{seconds}{Number of seconds to wait. If -1, it will wait for the default timeout set with SetTimeout.}
+\docparam{seconds}{Number of seconds to wait.
+If -1, it will wait for the default timeout,
+as set with \helpref{SetTimeout}{wxsocketbasesettimeout}.}
\docparam{millisecond}{Number of milliseconds to wait.}
\wxheading{Return value}
-Returns TRUE if an incoming connection arrived, FALSE if the timeout expired.
+Returns TRUE if an incoming connection arrived, FALSE if the timeout elapsed.
\wxheading{See also}
projects / wxWidgets.git / blobdiff