FBB::LocalClientSocket(3bobcat) Unix Domain client Socket FBB::LocalClientSocket(3bobcat)
FBB::LocalClientSocket - Client Socket connecting to a Server in the Unix Domain
Linking option: -lbobcat
An FBB::LocalClientSocket may be constructed to connect to a server process in the Unix Domain. The socket made available by the FBB:Local-
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::LocalClientSocket connects, The std::ostream is used to send information to the server process to which the
FBB::LocalClientSocket connects. Since a socket may be considered a file descriptor the avaiable 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.
All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB.
This constructor merely creates a FBB::LocalClientSocket object. Before it can be used, its open() member must be called.
o LocalClientSocket(std::string const &name):
This constructor initializes an FBB::LocalClientSocket object, using the named Unix Domain socket to connect to the server using the
named Unix Domain socket. An FBB::Errno 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. The copy constructor is not available.
o int connect():
This member returns a socket that can be used to communicate with the server process. An FBB::Errno exception is thrown if the con-
nection could not be established.
o open(std::string const &name):
This member function prepares the FBB::LocalClientSocket object, constructed earlier using the default constructor, for use. The
named Unix Domain socket is used to connect to the server using the named Unix Domain socket. An FBB::Errno 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() should be used.
See also the localserversocket(3bobcat) example.
using namespace std;
using namespace FBB;
int main(int argc, char **argv)
if (argc == 1)
cerr << "Provide filename representing the unix domain socket
int fd = client.connect();
cout << "Connecting to socket " << fd << endl;
IFdStream in(fd); // stream to read from
OFdStream out(fd); // stream to write to
// Ask for a textline, stop if empty / none
cout << "? ";
if (!getline(cin, line) || line.length() == 0)
cout << "Line read: " << line << endl;
// Return the line to the server
out << line.c_str() << endl;
cout << "wrote line
// Wait for a reply from the server
cout << "Answer: " << line << endl;
catch (Errno const &err)
cerr << err.what() << "
"Can't connect to " << argv << ", port " << argv << endl;
bobcat/localclientsocket - defines the class interface
bobcat(7), ifdstream(3bobcat), ifdstreambuf(3bobcat), clientsocket(3bobcat), localserversocket(3bobcat), localsocketbase(3bobcat), ofd-
o bobcat_3.01.00-x.dsc: detached signature;
o bobcat_3.01.00-x.tar.gz: source archive;
o bobcat_3.01.00-x_i386.changes: change log;
o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries;
o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages;
o http://sourceforge.net/projects/bobcat: public archive location;
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'.
This is free software, distributed under the terms of the GNU General Public License (GPL).
Frank B. Brokken (firstname.lastname@example.org).
libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::LocalClientSocket(3bobcat)