d7cb14cec9
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3292 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
696 lines
19 KiB
TeX
696 lines
19 KiB
TeX
\section{\class{wxSocketBase}}\label{wxsocketbase}
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\wxheading{Derived from}
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\helpref{wxEvtHandler}{wxevthandler}
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\wxheading{Include files}
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<wx/socket.h>
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\wxheading{See also}
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GSocket for wxWindows
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% ---------------------------------------------------------------------------
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% Event handling
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% ---------------------------------------------------------------------------
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\wxheading{Event handling}
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To process events from a socket, use the following event handler macro to direct
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input to member
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functions that take a \helpref{wxSocketEvent}{wxsocketevent} argument.
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\twocolwidtha{7cm}%
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\begin{twocollist}\itemsep=0pt
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\twocolitem{{\bf EVT\_SOCKET(id, func)}}{A socket event occured.}
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\end{twocollist}%
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% ---------------------------------------------------------------------------
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% See also ...
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% ---------------------------------------------------------------------------
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\wxheading{See also}
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\helpref{wxSocketEvent}{wxsocketevent}\\
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\helpref{wxSocketClient}{wxsocketclient}\\
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\helpref{wxSocketServer}{wxsocketserver}
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% ---------------------------------------------------------------------------
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% Members
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% ---------------------------------------------------------------------------
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxSocketBase::wxSocketBase}
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\func{}{wxSocketBase}{\void}
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Default constructor but don't use it, you must use \helpref{wxSocketClient}{wxsocketclient}
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or \helpref{wxSocketServer}{wxsocketserver}.
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\membersection{wxSocketBase::\destruct{wxSocketBase}}
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\func{}{\destruct{wxSocketBase}}{\void}
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Destroys the wxSocketBase object.
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% ---------------------------------------------------------------------------
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% State functions
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% ---------------------------------------------------------------------------
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%
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% SetFlags
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%
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\membersection{wxSocketBase::SetFlags}\label{wxsocketbasesetflags}
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\func{void}{SetFlags}{\param{wxSocketBase::wxSockFlags}{ flags}}
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\twocolwidtha{7cm}
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\begin{twocollist}\itemsep=0pt
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\twocolitem{{\bf wxSocketBase::NONE}}{Normal functionnalities.}
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\twocolitem{{\bf wxSocketBase::NOWAIT}}{Get the available data in the input queue and exit immediately.}
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\twocolitem{{\bf wxSocketBase::WAITALL}}{Wait for all required data unless an error occured.}
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\twocolitem{{\bf wxSocketBase::SPEED}}{Disable the asynchronous IO functionnality.}
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\end{twocollist}
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%
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% SetNotify
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%
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\membersection{wxSocketBase::SetNotify}\label{wxsocketbasesetnotify}
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\func{void}{SetNotify}{\param{GSocketEventFlags}{ event_flags}}
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SetNotify setups which socket events are to be sent to the event handler.
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For more information on socket events see GSocket events.
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%
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% Notify
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%
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\membersection{wxSocketBase::Notify}\label{wxsocketbasenotify}
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\func{void}{Notify}{\param{bool}{ notify}}
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Notify will enable (notify is TRUE) or disable (notify is FALSE) the propagation
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of socket events.
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%
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% Ok
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%
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\membersection{wxSocketBase::Ok}\label{wxsocketbaseok}
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\constfunc{bool}{Ok}{\void}
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Returns TRUE if the socket is initialized and ready and FALSE in other
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cases.
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\membersection{wxSocketBase::Error}\label{wxsocketbaseerror}
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\constfunc{bool}{Error}{\void}
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Returns TRUE if an error occured.
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\membersection{wxSocketBase::IsConnected}\label{wxsocketbaseconnected}
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\constfunc{bool}{IsConnected}{\void}
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Returns TRUE if the socket is connected.
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\membersection{wxSocketBase::IsData}\label{wxsocketbaseisdata}
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\constfunc{bool}{IsData}{\void}
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Returns TRUE if some data is arrived on the socket.
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\membersection{wxSocketBase::IsDisconnected}\label{wxsocketbasedisconnected}
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\constfunc{bool}{IsDisconnected}{\void}
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Returns TRUE if the socket is disconnected.
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\membersection{wxSocketBase::IsNoWait}\label{wxsocketbasenowait}
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\constfunc{bool}{IsNoWait}{\void}
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Returns TRUE if the socket mustn't wait.
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\membersection{wxSocketBase::LastCount}\label{wxsocketbaselastcount}
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\constfunc{size\_t}{LastCount}{\void}
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Returns the number of bytes read or written by the last IO call.
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\membersection{wxSocketBase::LastError}\label{wxsocketbaselasterror}
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\constfunc{GSocketError}{LastError}{\void}
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Returns an error in the GSocket format. See GSocket errors.
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% ---------------------------------------------------------------------------
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% IO calls
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% ---------------------------------------------------------------------------
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%
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% Peek
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%
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\membersection{wxSocketBase::Peek}\label{wxsocketbasepeek}
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\func{wxSocketBase\&}{Peek}{\param{char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function peeks a buffer of {\it nbytes} bytes from the socket. Peeking a buffer
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doesn't delete it from the system socket in-queue.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer where to put peeked data.}
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\docparam{nbytes}{Number of bytes.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror}\\
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount}\\
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}
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%
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% Read
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%
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\membersection{wxSocketBase::Read}\label{wxsocketbaseread}
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\func{wxSocketBase\&}{Read}{\param{char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function reads a buffer of {\it nbytes} bytes from the socket.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer where to put read data.}
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\docparam{nbytes}{Number of bytes.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{Remark/Warning}
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By default, Read uses an internal asynchronous manager: it will send data when
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the socket requests them. It is particularly interesting when you enter a long
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data transfer (e.g. a big file, an image, ...). But it is also buggy when you
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simply discuss with the peer using user data. In this case, wxSocket prepares
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itself to send data (Write wait for them to be sent) and during a GUI refresh
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the user enters new data, which involves a new Read call though the previous
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isn't finished. Well, in most cases it can work but it might fail too.
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So I advise you to use the SPEED flag, which disables the asynchronous manager,
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when you just want to discuss with the peer.
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This remark is also valid for all IO call.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror},
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount},
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}
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%
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% Write
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%
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\membersection{wxSocketBase::Write}\label{wxsocketbasewrite}
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\func{wxSocketBase\&}{Write}{\param{const char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function writes a buffer of {\it nbytes} bytes from the socket.
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\wxheading{Remark/Warning}
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By default, Write uses an internal asynchronous manager: it will send data when
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the socket requests them. It is particularly interesting when you enter a long
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data transfer (e.g. a big file, an image, ...). But it is also buggy when you
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simply discuss with the peer using user data. In this case, wxSocket prepares
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itself to send data (Write wait for them to be sent) and during a GUI refresh
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the user enters new data, which involves a new Write call though the previous
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isn't finished. Well, in most cases it can work but it might fail too.
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So I advise you to use the SPEED flag, which disables the asynchronous manager,
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when you just want to discuss with the peer.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer where to get the data to write.}
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\docparam{nbytes}{Number of bytes.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror}\\
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount}\\
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}
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%
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% WriteMsg
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%
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\membersection{wxSocketBase::WriteMsg}\label{wxsocketbasewritemsg}
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\func{wxSocketBase\&}{WriteMsg}{\param{const char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function writes a buffer of {\it nbytes} bytes from the socket. But it
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writes a short header before so that ReadMsg can alloc the right size for
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the buffer. So a buffer sent with WriteMsg {\bf must} be read with ReadMsg.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer where to put data peeked.}
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\docparam{nbytes}{Number of bytes.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror}\\
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount}\\
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}\\
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\helpref{wxSocketBase::ReadMsg}{wxsocketbasereadmsg}
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%
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% ReadMsg
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%
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\membersection{wxSocketBase::ReadMsg}\label{wxsocketbasereadmsg}
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\func{wxSocketBase\&}{ReadMsg}{\param{char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function reads a buffer sent by WriteMsg on a socket. If the buffer passed
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to the function isn't big enough, the function filled it and then discard the
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bytes left. This function always wait for the buffer to be entirely filled.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer where to put read data.}
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\docparam{nbytes}{Number of bytes allocated for the buffer.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror}\\
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount}\\
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}\\
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\helpref{wxSocketBase::WriteMsg}{wxsocketbasewritemsg}
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%
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% Unread
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%
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\membersection{wxSocketBase::UnRead}\label{wxsocketbaseunread}
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\func{wxSocketBase\&}{UnRead}{\param{const char *}{ buffer}, \param{size\_t}{ nbytes}}
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This function unreads a buffer. It means that the buffer is put in the top
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of the incoming queue. But, it is put also at the end of all unread buffers.
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It is useful for sockets because we can't seek it.
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\wxheading{Parameters}
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\docparam{buffer}{Buffer to be unread.}
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\docparam{nbytes}{Number of bytes.}
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\wxheading{Return value}
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Returns a reference to the current object.
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\wxheading{See also}
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\helpref{wxSocketBase::Error}{wxsocketbaseerror}\\
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\helpref{wxSocketBase::LastCount}{wxsocketbaselastcount}\\
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\helpref{wxSocketBase::LastError}{wxsocketbaselasterror}
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%
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% Discard
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%
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\membersection{wxSocketBase::Discard}\label{wxsocketbasediscard}
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\func{wxSocketBase\&}{Discard}{\void}
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This function simply deletes all bytes in the incoming queue. This function
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doesn't wait.
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% ---------------------------------------------------------------------------
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% Wait functions
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% ---------------------------------------------------------------------------
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\membersection{wxSocketBase::Wait}\label{wxsocketbasewait}
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\func{bool}{Wait}{\param{long}{ seconds = -1}, \param{long}{ microsecond = 0}}
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This function waits for an event: it could be an incoming byte, the possibility
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for the client to write, a lost connection, an incoming connection, an
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established connection.
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\wxheading{Parameters}
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\docparam{seconds}{Number of seconds to wait. By default, it waits infinitely.}
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\docparam{microsecond}{Number of microseconds to wait.}
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\wxheading{Return value}
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Returns TRUE if an event occured, FALSE if the timeout was reached.
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\wxheading{See also}
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\helpref{wxSocketBase::WaitForRead}{wxsocketbasewaitforread}\\
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\helpref{wxSocketBase::WaitForWrite}{wxsocketbasewaitforwrite}\\
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\helpref{wxSocketBase::WaitForLost}{wxsocketbasewaitforlost}
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%
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% WaitForRead
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%
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\membersection{wxSocketBase::WaitForRead}\label{wxsocketbasewaitforread}
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\func{bool}{WaitForRead}{\param{long}{ seconds = -1}, \param{long}{ microsecond = 0}}
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This function waits for a read event.
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\wxheading{Parameters}
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\docparam{seconds}{Number of seconds to wait. By default, it waits infinitely.}
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\docparam{microsecond}{Number of microseconds to wait.}
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\wxheading{Return value}
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Returns TRUE if a byte arrived, FALSE if the timeout was reached.
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\wxheading{See also}
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\helpref{wxSocketBase::Wait}{wxsocketbasewait}\\
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\helpref{wxSocketBase::WaitForWrite}{wxsocketbasewaitforwrite}\\
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\helpref{wxSocketBase::WaitForLost}{wxsocketbasewaitforlost}
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%
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% WaitForWrite
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%
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\membersection{wxSocketBase::WaitForWrite}\label{wxsocketbasewaitforwrite}
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\func{bool}{WaitForWrite}{\param{long}{ seconds = -1}, \param{long}{ microsecond = 0}}
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This function waits for a write event.
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\wxheading{Parameters}
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\docparam{seconds}{Number of seconds to wait. By default, it waits infinitely.}
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\docparam{microsecond}{Number of microseconds to wait.}
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\wxheading{Return value}
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Returns TRUE if a write event occured, FALSE if the timeout was reached.
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\wxheading{See also}
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\helpref{wxSocketBase::Wait}{wxsocketbasewait}\\
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\helpref{wxSocketBase::WaitForRead}{wxsocketbasewaitforread}\\
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\helpref{wxSocketBase::WaitForLost}{wxsocketbasewaitforlost}
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%
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% WaitForLost
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%
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\membersection{wxSocketBase::WaitForLost}\label{wxsocketbasewaitforlost}
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\func{bool}{Wait}{\param{long}{ seconds = -1}, \param{long}{ microsecond = 0}}
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This function waits for a "lost" event. For instance, the peer may have closed
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the connection, or the connection may have been broken.
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\wxheading{Parameters}
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\docparam{seconds}{Number of seconds to wait. By default, it waits infinitely.}
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\docparam{microsecond}{Number of microseconds to wait.}
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\wxheading{Return value}
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Returns TRUE if a "lost" event occured, FALSE if the timeout was reached.
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\wxheading{See also}
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\helpref{wxSocketBase::WaitForRead}{wxsocketbasewaitforread}\\
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\helpref{wxSocketBase::WaitForWrite}{wxsocketbasewaitforwrite}\\
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\helpref{wxSocketBase::WaitForLost}{wxsocketbasewaitforlost}
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%
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% RestoreState
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%
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\membersection{wxSocketBase::RestoreState}\label{wxsocketbaserestorestate}
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\func{void}{RestoreState}{\void}
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This function restores a previously saved state.
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\wxheading{See also}
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\helpref{wxSocketBase::SaveState}{wxsocketbasesavestate}
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% ---------------------------------------------------------------------------
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% Socket state
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% ---------------------------------------------------------------------------
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%
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% SaveState
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%
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\membersection{wxSocketBase::SaveState}\label{wxsocketbasesavestate}
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\func{void}{SaveState}{\void}
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This function saves the current state of the socket object in a stack:
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actually it saves all flags and the state of the asynchronous callbacks.
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\wxheading{See also}
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\helpref{wxSocketBase::RestoreState}{wxsocketbaserestorestate}
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% ---------------------------------------------------------------------------
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% Socket callbacks
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% ---------------------------------------------------------------------------
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\membersection{wxSocketBase::SetEventHandler}\label{wxsocketbaseseteventhandler}
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\func{void}{SetEventHandler}{\param{wxEvtHandler\&}{ evt\_hdlr}, \param{int}{ id = -1}}
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Sets an event handler to be called when a socket event occured.
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\wxheading{Parameters}
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\docparam{evt\_hdlr}{Specifies the event handler you want to use.}
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\docparam{id}{The id of socket event.}
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\wxheading{See also}
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\helpref{wxSocketEvent}{wxsocketevent}
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% ---------------------------------------------------------------------------
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% CLASS wxSocketClient
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% ---------------------------------------------------------------------------
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\section{\class{wxSocketClient}}\label{wxsocketclient}
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\wxheading{Derived from}
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\helpref{wxSocketBase}{wxsocketbase}
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\wxheading{Include files}
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<wx/socket.h>
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% ---------------------------------------------------------------------------
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% Members
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% ---------------------------------------------------------------------------
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%
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% wxSocketClient
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%
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\membersection{wxSocketClient::wxSocketClient}
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\func{}{wxSocketClient}{\param{wxSockFlags}{ flags = wxSocketBase::NONE}}
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Constructs a new wxSocketClient.
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\wxheading{Parameters}
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\docparam{flags}{Socket flags (See \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags})}
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%
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% ~wxSocketClient
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%
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\membersection{wxSocketClient::\destruct{wxSocketClient}}
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\func{}{\destruct{wxSocketClient}}{\void}
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Destroys a wxSocketClient object.
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%
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% Connect
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%
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\membersection{wxSocketClient::Connect}\label{wxsocketclientconnect}
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\func{bool}{Connect}{\param{wxSockAddress\&}{ address}, \param{bool}{ wait = TRUE}}
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Connects to a server using the specified address. If {\it wait} is TRUE, Connect
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will wait for the socket ready to send or receive data.
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\wxheading{Parameters}
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\docparam{address}{Address of the server.}
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\docparam{wait}{If true, waits for the connection to be ready.}
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\wxheading{Return value}
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Returns TRUE if the connection is established and no error occurs.
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\wxheading{See also}
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\helpref{wxSocketClient::WaitOnConnect}{wxsocketclientwaitonconnect}
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%
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% WaitOnConnect
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%
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\membersection{wxSocketClient::WaitOnConnect}\label{wxsocketclientwaitonconnect}
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\func{bool}{WaitOnConnect}{\param{long}{ seconds = -1}, \param{long}{ microseconds = 0}}
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Wait for a "connect" event.
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\wxheading{See also}
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\helpref{wxSocketBase::Wait}{wxsocketbasewait} for a detailed description.
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|
% ---------------------------------------------------------------------------
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% CLASS: wxSocketEvent
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% ---------------------------------------------------------------------------
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\section{\class{wxSocketEvent}}\label{wxsocketevent}
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|
This event class contains information about socket events.
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\wxheading{Derived from}
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|
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\helpref{wxEvent}{wxevent}
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\wxheading{Include files}
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|
<wx/socket.h>
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\wxheading{Event table macros}
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|
To process a socket event, use these event handler macros to direct input to member
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|
functions that take a wxSocketEvent argument.
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|
\twocolwidtha{7cm}
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|
\begin{twocollist}\itemsep=0pt
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\twocolitem{{\bf EVT\_SOCKET(id, func)}}{Process a socket event, supplying the member function.}
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\end{twocollist}%
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\wxheading{See also}
|
|
|
|
\helpref{wxSocketBase}{wxsocketbase},\rtfsp
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|
\helpref{wxSocketClient}{wxsocketclient},\rtfsp
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|
\helpref{wxSocketServer}{wxsocketserver}
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|
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|
\latexignore{\rtfignore{\wxheading{Members}}}
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|
\membersection{wxSocketEvent::wxSocketEvent}
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\func{}{wxSocketEvent}{\param{int}{ id = 0}}
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Constructor.
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|
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\membersection{wxSocketEvent::SocketEvent}\label{wxsocketeventsocketevent}
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|
\constfunc{GSocketEvent}{SocketEvent}{\void}
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|
Returns the socket event type.
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|
|
|
% ---------------------------------------------------------------------------
|
|
% CLASS: wxSocketServer
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|
% ---------------------------------------------------------------------------
|
|
\section{\class{wxSocketServer}}\label{wxsocketserver}
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|
|
|
\wxheading{Derived from}
|
|
|
|
\helpref{wxSocketBase}{wxsocketbase}
|
|
|
|
\wxheading{Include files}
|
|
|
|
<wx/socket.h>
|
|
|
|
% ---------------------------------------------------------------------------
|
|
% Members
|
|
% ---------------------------------------------------------------------------
|
|
\latexignore{\rtfignore{\wxheading{Members}}}
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|
|
|
%
|
|
% wxSocketServer
|
|
%
|
|
\membersection{wxSocketServer::wxSocketServer}\label{wxsocketserverconstr}
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|
|
|
\func{}{wxSocketServer}{\param{wxSockAddress\&}{ address}, \param{wxSockFlags}{ flags = wxSocketBase::NONE}}
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|
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|
Constructs a new wxSocketServer.
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|
|
|
\wxheading{Parameters}
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|
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|
\docparam{address}{Specifies the local address for the server (e.g. port number).}
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|
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|
\docparam{flags}{Socket flags (See \helpref{wxSocketBase::SetFlags}{wxsocketbasesetflags})}
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|
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|
%
|
|
% ~wxSocketServer
|
|
%
|
|
\membersection{wxSocketServer::\destruct{wxSocketServer}}
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|
|
|
\func{}{\destruct{wxSocketServer}}{\void}
|
|
|
|
Destroys a wxSocketServer object (it doesn't close the accepted connection).
|
|
|
|
%
|
|
% Accept
|
|
%
|
|
\membersection{wxSocketServer::Accept}
|
|
|
|
\func{wxSocketBase *}{Accept}{\void}
|
|
|
|
Creates a new object wxSocketBase and accepts an incoming connection. {\bf Warning !} This function will block the GUI.
|
|
|
|
\wxheading{Return value}
|
|
|
|
Returns an opened socket connection.
|
|
|
|
\wxheading{See also}
|
|
|
|
\helpref{wxSocketServer::AcceptWith}{wxsocketserveracceptwith}
|
|
|
|
%
|
|
% AcceptWith
|
|
%
|
|
\membersection{wxSocketServer::AcceptWith}\label{wxsocketserveracceptwith}
|
|
|
|
\func{bool}{AcceptWith}{\param{wxSocketBase\&}{ socket}}
|
|
|
|
Accept an incoming connection using the specified socket object.
|
|
This is useful when someone wants to inherit wxSocketBase.
|
|
|
|
\wxheading{Parameters}
|
|
|
|
\docparam{socket}{Socket to be initialized}
|
|
|
|
\wxheading{Return value}
|
|
|
|
Returns TRUE if no error occurs, else FALSE.
|
|
|