FBB::ClientSocket(3bobcat)       Client Socket      FBB::ClientSocket(3bobcat)



NAME
       FBB::ClientSocket - Client Socket connecting to a Server in the
       Internet

SYNOPSIS
       #include <bobcat/clientsocket>
       Linking option: -lbobcat

DESCRIPTION
       An FBB::ClientSocket may be constructed to connect to some server
       process in the internet. The socket made available by the
       FBB:ClientSocket may be used to initialize a std::istream and/or
       std::ostream. The std::istream is used to read information from the
       server process to which the FBB::ClientSocket connects, The
       std::ostream is used to send information to the server process to which
       the FBB::ClientSocket connects.  Since a socket may be considered a
       file descriptor the available FBB::IFdStream, FBB::IFdStreamBuf,
       FBB::OFdStream, and FBB::OFdStreamBuf 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.

       A Unix Domain client socket can be defined using
       FBB::LocalClientSocket.

NAMESPACE
       FBB
       All constructors, members, operators and manipulators, mentioned in
       this man-page, are defined in the namespace FBB.

INHERITS FROM
       FBB::SocketBase

CONSTRUCTOR
       o      ClientSocket(std::string const &host, uint16_t port):
              This constructor initializes an FBB::ClientSocket object,
              preparing it for a connection to the specified port at the given
              host.  An FBB::Exception 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 connect() (see below) should be used.


       Copy and move constructors (and assignment operators) are not
       available.

MEMBER FUNCTIONS
       All members of FBB::SocketBase (and thus of FBB::InetAddress) are
       available, as FBB::ClientSocket inherits from these classes.

       o      int connect():
              This member returns a socket that can be used to communicate
              with the server process. An FBB::Exception exception is thrown
              if the connection could not be established or if the SocketBase
              base class could not properly be constructed.


EXAMPLE
       See also the serversocket(3bobcat) example.

           #include <iostream>
           #include <string>
           #include <bobcat/clientsocket>
           #include <bobcat/ifdstream>
           #include <bobcat/ofdstream>

           using namespace std;
           using namespace FBB;

           int main(int argc, char **argv)
           try
           {
               if (argc == 1)
               {
                   cerr << "Provide servername and port number\n";
                   return 1;
               }

               size_t     port = stoul(argv[2]);
               ClientSocket client(argv[1], port);
               int fd = client.connect();
               string line;

               cout << "Connecting to socket " << fd << endl <<
                       "address = " << client.dottedDecimalAddress() << ", " <<
                                                                        endl <<
                       "communication through port " << client.port() << endl;

               IFdStream in(fd);                 // stream to read from
               OFdStream out(fd);                // stream to write to

               while (true)
               {
                                           // Ask for a textline, stop if
                   cout << "? ";           // empty / none
                   if (!getline(cin, line) || line.length() == 0)
                       return 0;
                   cout << "Line read: " << line << endl;

                                           // Return the line to the server
                   out << line.c_str() << endl;
                   cout << "wrote line\n";

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



FILES
       bobcat/clientsocket - defines the class interface

SEE ALSO
       bobcat(7), ifdstream(3bobcat), ifdbuf(3bobcat), inetaddress(3bobcat),
       localclientsocket(3bobcat), ofdstream(3bobcat), ofdstream(3bobcat),
       serversocket(3bobcat), socketbase(3bobcat)

BUGS
       None Reported.

BOBCAT PROJECT FILES
       o      https://fbb-git.gitlab.io/bobcat/: gitlab project page;

       o      bobcat_6.02.02-x.dsc: detached signature;

       o      bobcat_6.02.02-x.tar.gz: source archive;

       o      bobcat_6.02.02-x_i386.changes: change log;

       o      libbobcat1_6.02.02-x_*.deb: debian package containing the
              libraries;

       o      libbobcat1-dev_6.02.02-x_*.deb: debian package containing the
              libraries, headers and manual pages;


BOBCAT
       Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.

COPYRIGHT
       This is free software, distributed under the terms of the GNU General
       Public License (GPL).

AUTHOR
       Frank B. Brokken (f.b.brokken@rug.nl).

libbobcat-dev_6.02.02              2005-2022        FBB::ClientSocket(3bobcat)