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Special Forums News, Links, Events and Announcements Software Releases - RSS News C++ Sockets 2.2.9a (Default branch)
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Old 04-15-2008
C++ Sockets 2.2.9a (Default branch)
C++ Sockets is a cross-platform C++ wrapper for BSD-style sockets. It implements the TCP, UDP, ICMP, and SCTP transport layer protocols. Implemented application layer protocols are HTTP/HTTPS (using OpenSSL), SMTP (server), and Ajp/1.3 (server). Features include transparent SOCKS4 client support and asynchronous DNS. Included in the library are a number of HTTP client functions such as GET/PUT/POST, and also Web server framework components. License: GNU General Public License (GPL) Changes:
A problem in which HttpdForm sometimes got stuck in an infinite loop was fixed. An assignment operator was added on the HttpRequest class. Locking is done using a const Mutex, and Mutex was modified to work when const. Utility::Uri was added, which can be used for parsing of an URL.Image

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Help with sockets in C

if i have a server which wants to connect to exactly 5 clients, does that mean i need 5 socket file descriptors and use listen(socket_fd,1); for each one or just do listen(socket_fd,5) also whats the second parameter number mean? what happens if i put 0 there? also if i am connected... (28 Replies)
Discussion started by: omega666
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LEARN ABOUT FREEBSD

sockstat

SOCKSTAT(1)						    BSD General Commands Manual 					       SOCKSTAT(1)

NAME

     sockstat -- list open sockets

SYNOPSIS

     sockstat [-46cLlu] [-j jid] [-p ports] [-P protocols]

DESCRIPTION

     The sockstat command lists open Internet or UNIX domain sockets.

     The following options are available:

     -4 	 Show AF_INET (IPv4) sockets.

     -6 	 Show AF_INET6 (IPv6) sockets.

     -c 	 Show connected sockets.

     -j jid	 Show only sockets belonging to the specified jail ID.

     -L 	 Only show Internet sockets if the local or foreign addresses are not in the loopback network prefix 127.0.0.0/8, or do not con-
		 tain the IPv6 loopback address ::1.

     -l 	 Show listening sockets.

     -p ports	 Only show Internet sockets if either the local or foreign port number is on the specified list.  The ports argument is a comma-
		 separated list of port numbers and ranges specified as first and last port separated by a dash.

     -P protocols
		 Only show sockets of the specified protocols.	The protocols argument is a comma-separated list of protocol names, as they are
		 defined in protocols(5).

     -u 	 Show AF_LOCAL (UNIX) sockets.

     If neither -4, -6 or -u is specified, sockstat will list sockets in all three domains.

     If neither -c or -l is specified, sockstat will list both listening and connected sockets.

     The information listed for each socket is:

     USER	      The user who owns the socket.

     COMMAND	      The command which holds the socket.

     PID	      The process ID of the command which holds the socket.

     FD 	      The file descriptor number of the socket.

     PROTO	      The transport protocol associated with the socket for Internet sockets, or the type of socket (stream or datagram) for UNIX
		      sockets.

     LOCAL ADDRESS    For Internet sockets, this is the address the local end of the socket is bound to (see getsockname(2)).  For bound UNIX
		      sockets, it is the socket's filename.  For other UNIX sockets, it is a right arrow followed by the endpoint's filename, or
		      ``??'' if the endpoint could not be determined.

     FOREIGN ADDRESS  (Internet sockets only) The address the foreign end of the socket is bound to (see getpeername(2)).

     If a socket is associated with more than one file descriptor, it is shown multiple times.	If a socket is not associated with any file
     descriptor, the first four columns have no meaning.

SEE ALSO

     fstat(1), netstat(1), procstat(1), inet(4), inet6(4), protocols(5)

HISTORY

     The sockstat command appeared in FreeBSD 3.1.

AUTHORS

     The sockstat command and this manual page were written by Dag-Erling Smorgrav <des@FreeBSD.org>.

BSD
								   May 16, 2012 							       BSD