If an application using STREAM sockets; tcp protocol thread serve them and each such thread, at any point in time during the socket operations, has an state out of a total of 11 defined TCP states, based on the phase of the communication. This includes the beginning (right from the 1st SYN in the 3-way handshake) to the termination of the communication (when you close a socket).
The 'netstat' shows these states of all the TCP threads serving their corresponding sockets.
Please look at RFC#793.
Attaching the text showing TCP state change diagram.
The diagram depicts the states a TCP thread under goes (taken from RFC#793).
Hi
what is the command to see the process name/application name
along with the port number, connection status ...
netstat is not giving process/application name
Is there any way to know which application is holding which port?
Thanks in advance (3 Replies)
Hi..,
Now, I am reading about the netstat command and its implementation. I have doubts in some options and its functionalities,
natstat - M (Which is described as display masqueraded connections), what it means?
What is Forwarding Information Base.?(--fib)
Thanks in advance,... (3 Replies)
For FreeBSD I use this command to determine what ports are listenning
netstat -an | grep LISTEN
is there another way, perhaps another command? (2 Replies)
I can't tell what the output of the netstat command means. Is there anywhere that has this information? I tried the man pages, but they weren't helpful. (3 Replies)
Greetings to all,
Here is a line of output from my netstat command
cbp031.904 wdcprodhome.nfsd 98304 0 49640 0 ESTABLISHED
The only thing i recognize is the unix machine "cbp031" but what is .904 and all the other data telling me?
Thanks in advance. (3 Replies)
Hi,
In my project we use sftp with batch mode (password less) script in parallel for 14 sessions which connects to 2 different servers alternatively i.e. 7 connects to one server say server1 and the other 7 connects to say server 2.
Now the problem is that these 14 sessions are run in... (5 Replies)
Hi,
I want to list the time for how long a secure connections last to my server/blade. i am using netstat command to get the same, but not sure how to get the time for how long connections is being ESTABLISHED.
netstat -na | grep 'ESTABLISHED' | grep :443 |awk '{print $4}' | cut -d: -f1 |... (1 Reply)
Do I have this command correct to show all current connections/sessions my Solaris box has? It does not seem to do anything.
netstat -an | grep EST (6 Replies)
When running netstat -i from the Command Terminal,
It returns with 21 different connections..
The addresses all look like this:
::1
fe80:1::1
10:dd:b1:a5:c4:ba
with Network names like
Linke#2
fe80::8e2d
How can I delve deeper into this to clarify what is going on with my network?... (0 Replies)
Discussion started by: dwfiedler
0 Replies
LEARN ABOUT X11R4
socket.h
socket.h(3) Library Functions Manual socket.h(3)NAME
socket.h -
Network addresses and sockets related classes.
SYNOPSIS
#include <cc++/address.h>
Classes
class ost::Socket
The Socket is used as the base for all Internet protocol services under Common C++.
class ost::DCCPSocket
DCCP sockets are used for stream based connected sessions between two sockets.
class ost::UDPSocket
UDP sockets implement the TCP SOCK_DGRAM UDP protocol.
class ost::UDPBroadcast
Representing a UDP socket used for subnet broadcasts, this class provides an alternate binding and setPeer() capability for UDP
sockets.
class ost::UDPTransmit
Representing half of a two-way UDP connection, the UDP transmitter can broadcast data to another selected peer host or to an entire
subnet.
class ost::UDPReceive
Representing half of a two-way UDP connection, the UDP receiver can receive data from another peer host or subnet.
class ost::UDPDuplex
UDP duplex connections impliment a bi-directional point-to-point UDP session between two peer hosts.
class ost::TCPSocket
TCP sockets are used for stream based connected sessions between two sockets.
class ost::TCPV6Socket
TCPV6 sockets are used for stream based connected sessions between two ipv6 sockets.
class ost::TCPStream
TCP streams are used to represent TCP client connections to a server by TCP protocol servers for accepting client connections.
class ost::TCPSession
The TCP session is used to primarily to represent a client connection that can be managed on a separate thread.
class ost::SimpleTCPStream
Simple TCP Stream, to be used with Common C++ Library.
Namespaces
namespace ost
Macros
#define INVALID_SOCKET -1
#define _IOLEN64
#define _IORET64
#define MSG_DONTWAIT 0
#define MSG_NOSIGNAL 0
#define SOCK_DCCP 6
#define IPPROTO_DCCP 33
#define SOL_DCCP 269
#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_TX_CCID 14
#define DCCP_SOCKOPT_RX_CCID 15
Typedefs
typedef int SOCKET
Variables
class __EXPORT ost::SimpleTCPStream
Detailed Description
Network addresses and sockets related classes.
Macro Definition Documentation
#define _IOLEN64
Referenced by ost::SocketPort::peek(), ost::UDPSocket::peek(), ost::TCPStream::peek(), ost::SocketPort::receive(),
ost::UDPReceive::receive(), ost::SocketPort::send(), ost::UDPTransmit::send(), and ost::UDPTransmit::transmit().
#define _IORET64
#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_RX_CCID 15
#define DCCP_SOCKOPT_TX_CCID 14
#define INVALID_SOCKET -1
#define IPPROTO_DCCP 33
#define MSG_DONTWAIT 0
Referenced by ost::UDPTransmit::transmit().
#define MSG_NOSIGNAL 0
Referenced by ost::UDPTransmit::send(), and ost::UDPTransmit::transmit().
#define SOCK_DCCP 6
#define SOL_DCCP 269
Typedef Documentation
typedef int SOCKET
Author
Generated automatically by Doxygen for GNU CommonC++ from the source code.
GNU CommonC++ Sat Jun 23 2012 socket.h(3)