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Checking who is listening on a Unix Domain Socket
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FBB::LocalClientSocket(3bobcat) Unix Domain client Socket FBB::LocalClientSocket(3bobcat) NAME
FBB::LocalClientSocket - Client Socket connecting to a Server in the Unix Domain SYNOPSIS
#include <bobcat/localclientsocket> Linking option: -lbobcat DESCRIPTION
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. NAMESPACE
FBB All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB. INHERITS FROM
FBB::LocalSocketBase CONSTRUCTOR
o LocalClientSocket(): 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. MEMBER FUNCTION
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. EXAMPLE
See also the localserversocket(3bobcat) example. #include <iostream> #include <bobcat/localclientsocket> #include <bobcat/ifdstream> #include <bobcat/ofdstream> using namespace std; using namespace FBB; int main(int argc, char **argv) try { if (argc == 1) { cerr << "Provide filename representing the unix domain socket "; return 1; } LocalClientSocket client(argv[1]); int fd = client.connect(); string line; cout << "Connecting to socket " << fd << endl; IFdStream in(fd); // stream to read from OFdStream out(fd); // stream to write to while (true) { // Ask for a textline, stop if empty / none cout << "? "; 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 "; // Wait for a reply from the server getline(in, line); cout << "Answer: " << line << endl; } return 0; } catch (Errno const &err) { cerr << err.what() << " " << "Can't connect to " << argv[1] << ", port " << argv[2] << endl; return 1; } FILES
bobcat/localclientsocket - defines the class interface SEE ALSO
bobcat(7), ifdstream(3bobcat), ifdstreambuf(3bobcat), clientsocket(3bobcat), localserversocket(3bobcat), localsocketbase(3bobcat), ofd- stream(3bobcat), ofdstream(3bobcat) BUGS
None Reported. DISTRIBUTION FILES
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
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). libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::LocalClientSocket(3bobcat)
