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<html><head>
<title>FBB::ClientSocket</title>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1>FBB::ClientSocket</h1>
<h2>libbobcat1-dev_2.20.01-x.tar.gz</h2>
<h2>2005-2011</h2>

<html><head>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1></h1>

<html><head>
<title>FBB::ClientSocket(3bobcat)</title>
<link rev="made" href="mailto:Frank B. Brokken: f.b.brokken@rug.nl">
</head>
<body text="#27408B" bgcolor="#FFFAF0">
<hr>
<h1>FBB::ClientSocket(3bobcat)</h1>
<h2>libbobcat1-dev_2.20.01-x.tar.gz Client Socket</h2>
<h2>2005-2011</h2>


<p>
<h2>NAME</h2>FBB::ClientSocket - Client Socket connecting to a Server in the Internet
<p>
<h2>SYNOPSIS</h2>
    <strong>#include &lt;bobcat/clientsocket&gt;</strong><br>
    Linking option: <em>-lbobcat</em> 
<p>
<h2>DESCRIPTION</h2>
    An <strong>FBB::ClientSocket</strong> may be constructed to connect to some server
process in the internet. The socket made available by the <strong>FBB:ClientSocket</strong>
may be used to initialize a <strong>std::istream</strong> and/or <strong>std::ostream</strong>. The
<strong>std::istream</strong> is used to read information from the server process to which
the <strong>FBB::ClientSocket</strong> connects, The <strong>std::ostream</strong> is used to send
information to the server process to which the <strong>FBB::ClientSocket</strong> connects.
Since a socket may be considered a <em>file descriptor</em> the avaiable
<strong>FBB::IFdStream</strong>, <strong>FBB::IFdStreamBuf</strong>, <strong>FBB::OFdStream</strong>, and
<strong>FBB::OFdStreamBuf</strong> classes may be used profitably here. Note that having
available a socket does not mean that this defines the communication
protocol. It is (still) the responsibility of the programmer to comply with an
existing protocol or to implement a tailor-made protocol. The latter situation
implies that the sequence of input- and output operations is defined by the
programmer. 
<p>
<h2>NAMESPACE</h2>
    <strong>FBB</strong><br>
    All constructors, members, operators and manipulators, mentioned in this
man-page, are defined in the namespace <strong>FBB</strong>.
<p>
<h2>INHERITS FROM</h2>
    <strong>FBB::SocketBase</strong>
<p>
<h2>CONSTRUCTOR</h2>
    <ul>
    <li> <strong>ClientSocket(std::string const &amp;host, uint16_t port)</strong>:<br>
        This constructor initializes an <strong>FBB::ClientSocket</strong> object,
preparing it for a connection to the specified port at the given host.  An
<strong>FBB::Errno</strong> is thrown if the socket could not be constructed. The
construction of the socket does not mean that a connection has actually been
established. In order to connect to the server, the member <strong>connect()</strong> (see
below) should be used.
    </ul>
    The copy constructor is not available.
<p>
<h2>MEMBER FUNCTIONS</h2>
     All members of <strong>FBB::SocketBase</strong> (and thus of <strong>FBB::InetAddress</strong>) are
available, as <strong>FBB::ClientSocket</strong> inherits from these classes.
    <ul>
    <li> <strong>int connect()</strong>:<br>
        This member returns a socket that can be used to communicate with the
server process. An <strong>FBB::Errno</strong> exception is thrown if the connection could
not be established or if the <strong>SocketBase</strong> base class could not properly be
constructed.
    </ul>
<p>
<h2>EXAMPLE</h2>
    See also the <strong>serversocket</strong>(3bobcat) example.
        <pre>

    #include &lt;iostream&gt;
    #include &lt;bobcat/clientsocket&gt;
    #include &lt;bobcat/ifdstream&gt;
    #include &lt;bobcat/ofdstream&gt;
    #include &lt;bobcat/a2x&gt;
    
    using namespace std;
    using namespace FBB;
    
    int main(int argc, char **argv)
    try
    {
        if (argc == 1)
        {
            cerr &lt;&lt; "Provide servername and port number\n";
            return 1;
        }
    
        size_t     port = A2x(argv[2]);
        ClientSocket client(argv[1], port);
        int fd = client.connect();
        string line;
    
        cout &lt;&lt; "Connecting to socket " &lt;&lt; fd &lt;&lt; endl &lt;&lt;
                "address = " &lt;&lt; client.dottedDecimalAddress() &lt;&lt; ", " &lt;&lt; 
                                                                 endl &lt;&lt;
                "communication through port " &lt;&lt; client.port() &lt;&lt; endl;
    
        IFdStream in(fd);                 // stream to read from        
        OFdStream out(fd);                // stream to write to
    
        while (true)
        {
                                    // Ask for a textline, stop if 
            cout &lt;&lt; "? ";           // empty / none
            if (!getline(cin, line) || line.length() == 0)
                return 0;
            cout &lt;&lt; "Line read: " &lt;&lt; line &lt;&lt; endl;

                                    // Return the line to the server
            out &lt;&lt; line.c_str() &lt;&lt; endl;    
            cout &lt;&lt; "wrote line\n";
    
            getline(in, line);      // Wait for a reply from the server
            cout &lt;&lt; "Answer: " &lt;&lt; line &lt;&lt; endl;
        }
        return 0;
    }
    catch (Errno const &amp;err)
    {
        cerr &lt;&lt; err.what() &lt;&lt; "\n" &lt;&lt;
                "Can't connect to " &lt;&lt; argv[1] &lt;&lt; ", port " &lt;&lt; 
                argv[2] &lt;&lt; endl;
        return 1;
    }
        
</pre>

<p>
<h2>FILES</h2>
    <em>bobcat/clientsocket</em> - defines the class interface
<p>
<h2>SEE ALSO</h2>
    <strong>bobcat</strong>(7), <strong>ifdstream</strong>(3bobcat), <strong>ifdstreambuf</strong>(3bobcat),
<strong>inetaddress</strong>(3bobcat), <strong>localclientsocket</strong>(3bobcat),
<strong>ofdstream</strong>(3bobcat), <strong>ofdstream</strong>(3bobcat), <strong>serversocket</strong>(3bobcat),
<strong>socketbase</strong>(3bobcat)
<p>
<h2>BUGS</h2>
    None Reported.
<p>

<h2>DISTRIBUTION FILES</h2>
    <ul>
    <li> <em>bobcat_2.20.01-x.dsc</em>: detached signature;
    <li> <em>bobcat_2.20.01-x.tar.gz</em>: source archive;
    <li> <em>bobcat_2.20.01-x_i386.changes</em>: change log;
    <li> <em>libbobcat1_2.20.01-x_*.deb</em>: debian package holding the
            libraries;
    <li> <em>libbobcat1-dev_2.20.01-x_*.deb</em>: debian package holding the
            libraries, headers and manual pages;
    <li> <em>http://sourceforge.net/projects/bobcat</em>: public archive location;
    </ul>
<p>
<h2>BOBCAT</h2>
    Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.
<p>
<h2>COPYRIGHT</h2>
    This is free software, distributed under the terms of the 
    GNU General Public License (GPL).
<p>
<h2>AUTHOR</h2>
    Frank B. Brokken (<strong>f.b.brokken@rug.nl</strong>).
<p>

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