02-05-2009
I need to find all connections that goes from server1 to server2 and server3. I know that server3 is down and thats why running the netstat command on server1 will not give me information about the connections to server3. Is there any way ( i suppose a file in the server1) which holds information about all these ?
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LEARN ABOUT NETBSD
listen
LISTEN(2) BSD System Calls Manual LISTEN(2)
NAME
listen -- listen for connections on a socket
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <sys/socket.h>
int
listen(int s, int backlog);
DESCRIPTION
To accept connections, a socket is first created with socket(2), a willingness to accept incoming connections and a queue limit for incoming
connections are specified with listen(), and then the connections are accepted with accept(2). The listen() call applies only to sockets of
type SOCK_STREAM or SOCK_SEQPACKET.
The backlog parameter defines the maximum length the queue of pending connections may grow to. If a connection request arrives with the
queue full the client may receive an error with an indication of ECONNREFUSED, or, if the underlying protocol supports retransmission, the
request may be ignored so that retries may succeed.
RETURN VALUES
A 0 return value indicates success; -1 indicates an error.
ERRORS
listen() will fail if:
[EBADF] The argument s is not a valid descriptor.
[ENOTSOCK] The argument s is not a socket.
[EOPNOTSUPP] The socket is not of a type that supports the operation listen().
SEE ALSO
accept(2), connect(2), socket(2)
HISTORY
The listen() function call appeared in 4.2BSD.
BUGS
The backlog is currently limited (silently) to 128.
BSD
December 11, 1993 BSD