Sponsored Content
Full Discussion: about TCP connection
Top Forums UNIX for Advanced & Expert Users about TCP connection Post 302117497 by sumitpandya on Tuesday 15th of May 2007 01:16:19 AM
Old 05-15-2007
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

TCP/IP Connection getting slower...

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

How to check the TCP/UDP port of a connection

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

Create a TCP/IP Connection

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

close existing tcp connection in C

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

How to kill the TCP ESTABLISHED connection in netstat

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

TCP failed connection attempts from netstat -s

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

false tcp connection

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

many tcp connection in close-wait

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

TCP connection check

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

How to solve TCP connection timeout (not in ssh)?

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
libssh2_channel_direct_tcpip_ex(3)				  libssh2 manual				libssh2_channel_direct_tcpip_ex(3)

NAME
libssh2_channel_direct_tcpip_ex - Tunnel a TCP connection through an SSH session SYNOPSIS
#include <libssh2.h> LIBSSH2_CHANNEL * libssh2_channel_direct_tcpip_ex(LIBSSH2_SESSION *session, const char *host, int port, const char *shost, int sport); LIBSSH2_CHANNEL * libssh2_channel_direct_tcpip(LIBSSH2_SESSION *session, const char *host, int port); DESCRIPTION
session - Session instance as returned by libssh2_session_init_ex(3) host - Third party host to connect to using the SSH host as a proxy. port - Port on third party host to connect to. shost - Host to tell the SSH server the connection originated on. sport - Port to tell the SSH server the connection originated from. Tunnel a TCP/IP connection through the SSH transport via the remote host to a third party. Communication from the client to the SSH server remains encrypted, communication from the server to the 3rd party host travels in cleartext. RETURN VALUE
Pointer to a newly allocated LIBSSH2_CHANNEL instance, or NULL on errors. ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed. SEE ALSO
libssh2_session_init_ex(3) libssh2 0.15 1 Jun 2007 libssh2_channel_direct_tcpip_ex(3)
All times are GMT -4. The time now is 03:30 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy