65 lines
2.6 KiB
TeX
65 lines
2.6 KiB
TeX
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\section{\class{wxTCPClient}}\label{wxtcpclient}
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A wxTCPClient object represents the client part of a client-server conversation.
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It emulates a DDE-style protocol, but uses TCP/IP which is available on most platforms.
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A DDE-based implementation for Windows is available using \helpref{wxDDEClient}{wxddeclient}.
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To create a client which can communicate with a suitable server,
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you need to derive a class from wxTCPConnection and another from wxTCPClient.
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The custom wxTCPConnection class will intercept communications in
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a `conversation' with a server, and the custom wxTCPServer is required
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so that a user-overriden \helpref{wxTCPClient::OnMakeConnection}{wxtcpclientonmakeconnection} member can return
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a wxTCPConnection of the required class, when a connection is made.
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\wxheading{Derived from}
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wxClientBase\\
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\helpref{wxObject}{wxobject}
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\wxheading{See also}
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\helpref{wxTCPServer}{wxtcpserver}, \helpref{wxTCPConnection}{wxtcpconnection},
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\helpref{Interprocess communications overview}{ipcoverview}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxTCPClient::wxTCPClient}
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\func{}{wxTCPClient}{\void}
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Constructs a client object.
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\membersection{wxTCPClient::MakeConnection}\label{wxtcpclientmakeconnection}
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\func{wxConnectionBase *}{MakeConnection}{\param{const wxString\& }{host}, \param{const wxString\& }{service}, \param{const wxString\& }{topic}}
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Tries to make a connection with a server specified by the host
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(a machine name under Unix), service name (must
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contain an integer port number under Unix), and a topic string. If the
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server allows a connection, a wxTCPConnection object will be returned.
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The type of wxTCPConnection returned can be altered by overriding
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the \helpref{wxTCPClient::OnMakeConnection}{wxtcpclientonmakeconnection} member to return your own
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derived connection object.
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\membersection{wxTCPClient::OnMakeConnection}\label{wxtcpclientonmakeconnection}
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\func{wxConnectionBase *}{OnMakeConnection}{\void}
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The type of \helpref{wxTCPConnection}{wxtcpconnection} returned from a \helpref{wxTCPClient::MakeConnection}{wxtcpclientmakeconnection} call can
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be altered by deriving the {\bf OnMakeConnection} member to return your
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own derived connection object. By default, a wxTCPConnection
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object is returned.
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The advantage of deriving your own connection class is that it will
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enable you to intercept messages initiated by the server, such
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as \helpref{wxTCPConnection::OnAdvise}{wxtcpconnectiononadvise}. You may also want to
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store application-specific data in instances of the new class.
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\membersection{wxTCPClient::ValidHost}
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\func{bool}{ValidHost}{\param{const wxString\& }{host}}
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Returns TRUE if this is a valid host name, FALSE otherwise.
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