05-16-2007
Hi Sumitpandya,
local-port is 500 and remote port is depend on the application is can 36053, 45050,etc and connection time is 23:30:25, pid is 00919 (919), application id is 112.
how to check that the tcp connection is stuck (means no transaction on the TCP ?
note : using solaris 8 sparc 5.8
please advice
Thank you
bucci
Quote:
Originally Posted by sumitpandya
Give us header of "application log connection:". Example
Local-Port Remote-IP:Port ??? Connection-Time ??? ?? ????
0500 ( 192.168.0.1:36053) 00919 2007/05/10 23:30:25 112 13 2007/05/10 23:30:25 1969/12/31 17:00:00
pseudo code of your server will be very helpful to help you
You can use tcpdump/ethereal to see what is happening b/w both client and server... Simply "snoop" packets for "port 500".
At instance i can think of tunning Kernel-TCP/IP parameters and reduce idle-timeout. In SunOs you can use ndd and in Linux you can use sysctl (/proc/sys/net/ipv4)
All the best.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
We have developed a server program using TCP/IP Communication to communicate with another client program. After running for some days we find the TCP/IP connection from the server program is getting slower.
What i mean to say is since the send() function in the server program (it is... (2 Replies)
Discussion started by: rajesh_puru
2 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Users are connecting thru a KCML Client to UNIX machine, and I want to know which TCP/UDP port that client uses? How can I check the port of a user logged in?
Regards,
Tayyab (2 Replies)
Discussion started by: tayyabq8
2 Replies
3. Shell Programming and Scripting
Hello,
I am trying to write a script in Perl which will send some data from a UNIX Box to a windows box. I am planning to create a TCP/IP communication port for the same. How do I go about this? Kindly help.
Regards,
Garric (50 Replies)
Discussion started by: garric
50 Replies
4. Programming
Hello. I would like to know how to close an existing tcp socket. I have read some stuff and learned how to create a socket and then close it but have not found anything about how to close an existing tcp socket created by another application. The situation is this: I have an ODBC server running and... (6 Replies)
Discussion started by: raidzero
6 Replies
5. Solaris
Hello,
Actually there are some bugs in application which does not close the TCP connection to other server though CORBA.
We need to kill that ESTABLISHED connections as new connection are not happeneing as the allocated ports were used and showing as ESTABLISHED
Is there any... (4 Replies)
Discussion started by: GIC1986
4 Replies
6. UNIX for Dummies Questions & Answers
Dear experts,
I am seeing a lot of TCP failed connection attempts from "netstat -s" on one of our servers.
How can I pin point what connection failed and what are the ports involved?
Any tools/commands I can dig in deeper to diag. what went wrong on these "failed connection attempts"?
... (2 Replies)
Discussion started by: cache51
2 Replies
7. IP Networking
Why this happens?
How to solve this?
$netstat -na |grep 9325
tcp 0 0 127.0.0.1:9325 127.0.0.1:9325 ESTABLISHED
When a client socket repeatedly tries to connect to an inactive(no server socket is listening on this port) local port,connect succeeds.
... (1 Reply)
Discussion started by: johnbach
1 Replies
8. Solaris
Hi,
I use solaris Unix .
I find there is some problem in application and it generate many "close-wait" tcp connect and stay in the server . it is generate by process id 7740
root@XX # netstat -an | grep CLOSE_WAIT | wc -l
285
root@XX # netstat -an | grep CLOSE_WAIT
10.158.35.4.34805 ... (2 Replies)
Discussion started by: abcdef
2 Replies
9. Programming
Hi.
I am writing client - server application using TCP sockets.
I need some very basic functionality, namely: how to check if another "participant" of the connection is still present?
I want to handle situations, when client is gone, or server breaks down, etc. (25 Replies)
Discussion started by: Shang
25 Replies
10. Red Hat
HI
We have some Red Hat Linux Sevres which is having TCP connection timeout, not SSH connection, as an example oracle connection connected from TOD.
SSH i managed to add keepalive and it's working fine (1 Reply)
Discussion started by: bentech4u
1 Replies
LEARN ABOUT DEBIAN
socket_connect4
socket_connect4(3) Library Functions Manual socket_connect4(3)
NAME
socket_connect4 - attempt to make a TCP connection
SYNTAX
#include <socket.h>
int socket_connect4(int s,const char ip[4],uint16 port);
DESCRIPTION
socket_connect4 attempts to make a connection from TCP socket s to TCP port port on IP address ip.
socket_connect4 may return
o 0, to indicate that the connection succeeded (and succeeded immediately, if the socket is non-blocking)
o -1, setting errno to error_inprogress or error_wouldblock, to indicate that the socket is non-blocking
o -1, setting errno to something else, to indicate that the connection failed (and failed immediately, if the socket is non-blocking).
When a background connection succeeds or fails, s becomes writable; you can use socket_connected to see whether the connection succeeded.
If the connection failed, socket_connected returns 0, setting errno appropriately.
Once a TCP socket is connected, you can use the read and write system calls to transmit data.
You can call socket_connect4 without calling socket_bind4. This has the effect as first calling socket_bind4 with IP address 0.0.0.0 and
port 0.
EXAMPLE
#include <socket.h>
int s;
char ip[4];
uint16 p;
s = socket_tcp4();
socket_bind4(s,ip,p);
socket_connect4(s,ip,p);
SEE ALSO
socket_connect6(3)
socket_connect4(3)