10 More Discussions You Might Find Interesting
1. IP Networking
I need clarification on whether it is okay to set socket options on a listening socket
simultaneously when it is being used in an accept() call?
Following is the scenario:-
-- Task 1 - is executing in a loop - polling a listen socket, lets call it 'fd', (whose file descriptor is global)... (2 Replies)
Discussion started by: jake24
2 Replies
2. Red Hat
Is there a Linux tunable to reduce the amount of time a socket waits before considering the remote side dead?
Its the same senario when you try to telnet to a dead machine, telnet sits and waits for ~30seconds, before the socket timer expires and cancels the request. (5 Replies)
Discussion started by: mrmurdock
5 Replies
3. Programming
Hi,
I want to code TCP/IP client/server in linux application capable to fastly detect ethernet cable disconnection in any condition.
So I have activate SO_KEEPALIVE options and set TCP_KEEPCNT, TCP_KEEPIDLE and TCP_KEEPINTVL to 1.
When I disconnect ethernet cable I have the following... (5 Replies)
Discussion started by: jeje_clb
5 Replies
4. IP Networking
Hi,
I want to capture a certain type of packets (selected according to the protocol) coming to my PC and then transmit them to another PC. I had the idea to use tcpdump to filter input packets and extract those chosen. Well my questions are:
1- after filtering input packets, those that have not... (1 Reply)
Discussion started by: ziedf
1 Replies
5. Programming
Dear Experts,
i am compiling my code in suse 4.1 which is compiling fine,
but at runtime it is showing me for socket programming error no 88
as i searched in errno.h it is telling me socket operation on non socket,
what is the meaning of this , how to deal with this error , please... (1 Reply)
Discussion started by: vin_pll
1 Replies
6. Programming
Why does this socket function only read the first 1440 chars of the stream. Why not the whole stream ? I checked it with gdm and valgrind and everything seems correct...
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include... (3 Replies)
Discussion started by: cyler
3 Replies
7. Programming
Hi all,
On the server side, one socket is used for listening, the others are used for communicating with the client.
My question is: if i want to set option for socket, which socket should be set on?
If either can be set, what's the different?
Again, what's the different if set option... (1 Reply)
Discussion started by: blademan100
1 Replies
8. UNIX for Advanced & Expert Users
Hi,
I was porting ipv4 application to ipv6; i was done with TCP transports. Now i am facing problem with SCTp transport at runtime.
To test SCTP transport I am using following server and client socket programs. Server program runs fine, but client program fails giving Invalid Arguments for... (0 Replies)
Discussion started by: chandrutiptur
0 Replies
9. Cybersecurity
i would like to know about tcpdump
i would like to use tcpdump to get information about these
- Date
- time
- source hostname
- source mac address
- source ip address
- destination ip address
- see outbound only
then i use command like this
tcpdump -i le0 -n -q -tttt -e src net... (0 Replies)
Discussion started by: chamnanpol
0 Replies
10. Programming
I have two net-card. one is 172.16.24.99(ENG) ,another is 172.16.25.99(ENG-B). Both masks is 255.255.255.0.
I will monitor data on the tcp port 8055 in ENG, How do I set option of tcpdump command (2 Replies)
Discussion started by: chenhao_no1
2 Replies
Socket(3pm) User Contributed Perl Documentation Socket(3pm)
NAME
Coro::Socket - non-blocking socket-I/O
SYNOPSIS
use Coro::Socket;
# listen on an ipv4 socket
my $socket = new Coro::Socket PeerHost => "localhost",
PeerPort => 'finger';
# listen on any other type of socket
my $socket = Coro::Socket->new_from_fh
(IO::Socket::UNIX->new
Local => "/tmp/socket",
Type => SOCK_STREAM,
);
DESCRIPTION
This module is an AnyEvent user, you need to make sure that you use and run a supported event loop.
This module implements socket-handles in a coroutine-compatible way, that is, other coroutines can run while reads or writes block on the
handle. See Coro::Handle, especially the note about prefering method calls.
IPV6 WARNING
This module was written to imitate the IO::Socket::INET API, and derive from it. Since IO::Socket::INET does not support IPv6, this module
does neither.
Therefore it is not recommended to use Coro::Socket in new code. Instead, use AnyEvent::Socket and Coro::Handle, e.g.:
use Coro;
use Coro::Handle;
use AnyEvent::Socket;
# use tcp_connect from AnyEvent::Socket
# and call Coro::Handle::unblock on it.
tcp_connect "www.google.com", 80, Coro::rouse_cb;
my $fh = unblock +(Coro::rouse_wait)[0];
# now we have a perfectly thread-safe socket handle in $fh
print $fh "GET / HTTP/1.0 15 12 15 12";
local $/;
print <$fh>;
Using "AnyEvent::Socket::tcp_connect" gives you transparent IPv6, multi-homing, SRV-record etc. support.
For listening sockets, use "AnyEvent::Socket::tcp_server".
$fh = new Coro::Socket param => value, ...
Create a new non-blocking tcp handle and connect to the given host and port. The parameter names and values are mostly the same as for
IO::Socket::INET (as ugly as I think they are).
The parameters officially supported currently are: "ReuseAddr", "LocalPort", "LocalHost", "PeerPort", "PeerHost", "Listen", "Timeout",
"SO_RCVBUF", "SO_SNDBUF".
$fh = new Coro::Socket PeerHost => "localhost", PeerPort => 'finger';
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://home.schmorp.de/
perl v5.14.2 2012-04-13 Socket(3pm)