|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:LocalClientSocket 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 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.
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.
- 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::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.
- 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.
- 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::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() 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\n";
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\n";
// Wait for a reply from the server
cout << "Answer: " << line << endl;
catch (Exception const &err)
cerr << err.what() << "\n" <<
"Can’t connect to " << argv << ", port " << argv << endl;
bobcat/localclientsocket - defines the class interface
bobcat(7), ifdstream(3bobcat), ifdbuf(3bobcat), clientsocket(3bobcat), localserversocket(3bobcat), localsocketbase(3bobcat), ofdstream(3bobcat), ofdstream(3bobcat)
- https://fbb-git.gitlab.io/bobcat/: gitlab project page;
- bobcat_6.02.02-x.dsc: detached signature;
- bobcat_6.02.02-x.tar.gz: source archive;
- bobcat_6.02.02-x_i386.changes: change log;
- libbobcat1_6.02.02-x_*.deb: debian package containing the libraries;
- libbobcat1-dev_6.02.02-x_*.deb: debian package containing the libraries, headers and manual pages;
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 (email@example.com).