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Top Forums Programming Using socket to test a TCP port Post 302512369 by tjones1105 on Saturday 9th of April 2011 07:23:39 PM
Old 04-09-2011
Using socket to test a TCP port

Hello,
I'm trying to write a small c application to test a tcp port. This works fine for the most part but the default timeout on the connect is very long. I have been reading many posts but and it looks like I need to set the socket to be non-blocking and poll for a result. I have been totally unable to make this work.

Does anyone have a quick example on setting up a timeout on a socket connect?

Thanks,
tom
 

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shevek::socket(3)					     Library Functions Manual						 shevek::socket(3)

NAME
shevek::socket - Use a unix-domain, tcp or avahi network connection with shevek::fd. SYNOPSIS
#include <socket.hh> Inherits shevek::fd. Inherited by shevek::telnet. Public Types typedef sigc::signal0< void > disconnect_t Disconnect signal type. typedef sigc::slot0< void > listen_t New connection callback type. Public Member Functions void listen_unix (std::string const &file, listen_t cb, unsigned queue=10) Listen for new connections on a UNIX socket. Use listen instead. void listen_tcp (std::string const &service, listen_t cb, unsigned queue=10) Listen for new connections on a TCP socket. Use listen instead. void listen_avahi (std::string const &service, Glib::ustring const &protocol, Glib::ustring const &name, listen_t cb, unsigned queue=10) Listen for new connections on a TCP socket, and register it with avahi. Use listen instead. void listen (std::string const &port, listen_t cb, unsigned queue=10) Listen for new connections. void connect_unix (std::string const &unix_name) Connect to a UNIX socket. Use connect instead. void connect_tcp (std::string const &host, std::string const &service) Connect to a TCP socket. Use connect instead. void connect_avahi (avahi::browser::owner const &target, avahi::browser::details const &details=avahi::browser::details()) Connect to an avahi TCP socket. Use connect instead. void connect (std::string const &port) Connect to a socket. void accept (Glib::RefPtr< socket > sock) Accept a connection (only allowed on a listening socket). std::string get_peer_info (bool numeric=false) const Get information about the other side of a connection. std::string get_own_info (bool numeric=false) const Get info about our side of the connection. disconnect_t signal_disconnect () Schedule a function to be called when the socket is disconnected. void disconnect () Disconnect the socket without reconnecting. Static Public Member Functions static Glib::RefPtr< socket > create (Glib::RefPtr< Glib::MainContext > main=Glib::MainContext::get_default()) Create a new socket. Protected Member Functions socket (Glib::RefPtr< Glib::MainContext > main) Constructor. virtual ~socket () Destructor. Detailed Description Use a unix-domain, tcp or avahi network connection with shevek::fd. Member Function Documentation void shevek::socket::connect (std::string const &port) Connect to a socket. This is the preferred function to use. Format: UNIX domain sockets: anything with at least one / in it. TCP: hostname:port, where the hostname and colon may be omitted, and the port may be a service or number. Avahi: name|protocol, where name is the application name, and protocol the connection type. void shevek::socket::listen (std::string const &port, listen_tcb, unsignedqueue = 10) Listen for new connections. This is the preferred function to use. Format: UNIX domain sockets: anything with at least one / in it. TCP services: the name. TCP port numbers: the number. For TCP, appending |name|protocol, where name is the application name and protocol the connection type. Author Generated automatically by Doxygen for libshevek from the source code. libshevek Fri May 11 2012 shevek::socket(3)
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