Server :: Socket Connections / Socket And TCP Connection For Connecting To An External System?
Dec 7, 2010Anyone knows the difference between a socket and TCP connection for connecting to an external system?
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Networking :: Configuring Socket Timer To Release Socket Once The Connection Is Terminated?
Jun 4, 2010I want to configure socket timer to release socket(port) once the connection is terminated. Do we have something in Linux OS to configure this delay to release socket?.
Any command, link or man-page anything will be helpful.
I browsed a lot but unable to find it.
Networking :: Multiple FTP Upload Socket Error "Connection Reset By Peer: Socket Write"
Jan 31, 2010I am pragmatically trying to upload a list of files from my client machine to a proFTPd server I have running on Ubuntu. Every time I get several (around fifty) files into the transfer, I get the following error: Quote: Connection reset by peer: socket write error
I am able to remotely upload 25,000 small files of ~ 1K in size, but when I go to upload hundreds of 2-4 Mb files, I get a socket write error. Am I using up all available sockets before they can be released? If so, how do I release the sockets? If not, what does this error mean and why am I getting it?
Networking :: /usr/sbin/in.telnetd: Getpeername: Socket Operation On Non-socket?
May 5, 2009I had installed Fedora 10
Below is the output of uname -a
Linux 2.6.27.5-117.fc10.i686.PAE #1 SMP Tue Nov 18 12:08:10 EST 2008 i686 i686 i386 GNU/Linux
I need to enable telnet service on it, then found xinetd and telnet-server not installed,
Then I had installed below
First I had installed Xinetd: xinetd-2.3.14-21.fc10.i386.rpm
then I had installed telnet-server: xinetd-2.3.14-21.fc10.i386.rpm
After installation I executed below commands
Service xinetd start
Chkconfig xinetd on
Chkconfig telnet on
Service iptables stop
Chkconfig iptables off
Iptables �F
After I had tried telnet localhost ----IT FAILED
when I run telnet server manually by issuing the below command
/usr/sbin/in.telnetd, I get below error
[COLOR="Red"]/usr/sbin/in.telnetd: getpeername: Socket operation on non-socket[/COLOR]
I have other system running same OS, I had followed the same steps discussed above to enable telnet, It works fine on it.
General :: Socket Programming - Feed Some Words One By One To The Socket
Jul 6, 2010i'm writing a simple program of client socket program. Here below is the code sample which i'm writing...
Code:
//tcp_client.c
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include<string.h>
#include<stdlib.h>
[Code].....
the above code works fine.if we copmile and run ./a.exe 192.xx.xx.xxx 1111 and press enter it works fine..everytime it asks "Please enter the message: " and if give that will be displayed in server. but my problem is i dont want to print everytime "Please enter the message: " i just want to feed some words one by one to the socket.
Programming :: Setsockopt : Socket Operation On Non-socket Getting Error?
Mar 30, 2009im getting that error in my code for some reason. I compiled my code, and when i try to run this server it throws me an error on my call to setsocketopt(). The only way it can reach that part of my loop is if it succeeds when it calls sock() so I dont understand why the error says its an operation on a non-socket. Im just trying to set up a server to pass messages from a client to it a viceversa. Here is the code:
Code:
int main()
{
int socket_fd, new_socket_fd, k;
struct addrinfo hints, *server_info, *p;
struct sockaddr_storage peer_address;
code....
General :: Socket Error / Socket 31: 0x36?
Sep 15, 2009We are seeing recv err on socket 31: 0x36. What could be meaning of the error?.
View 1 Replies View RelatedProgramming :: Close A Socket And Refuse Waiting Connections?
Jan 4, 2010i've written a socket server. when i launch a client, it connects to servers running on various machines on my local network, which then reply to the client with some string messages, and the client exits.
however, when i launch the client repeatedly (say 5 or 6 times in quick succession) the client is unable to bind to its local port. this appears to be because servers are still trying to connect to the client machine's port, even though the client exited and shut the socket down. the actual error i receive is "Error binding socket to 192.168.1.6:44561: Address already in use".
so, is it enough just to shutdown and close a socket? is there some way that in doing so the client machine can send a CONNECTION_REFUSED message to any machine trying to connect to it? i am using PHP, not that that should make much of a difference i hope.
the problem resolves itself after around 20 seconds as the machines trying to connect to the client timeout. i still need to fix this issue though.
CentOS 5 :: Socket Programming: Accept()-ing All Pending Connections
May 28, 2009I am writing a server which uses edge-triggered epoll. When the server calls accept(), it just extracts the first connection in the pending queue. If there are more connections that are waiting, can we make the server accept all the pending connections? I wrote a loop like the following:
do {
client_fd = accept(...);
/* Work with the client fd */
} while (client_fd != -1); [/code]
Doesn't seem to work. A related question, more a clarification, is as follows. My understanding was that a connect() at the client returns only when accept() in the server returns. Clearly, I was incorrect. Even with no accept() call in the server, my client was able to connect and send data. Am I getting this right?
Software :: Connecting To Mysql Database - Can't Connect To Local MySQL Server Through Socket
Aug 25, 2010I'm having problems connecting to the mysql database on my system. I first noticed this when I was trying to set up the program anymeal. I subsequently tried using MySQL Administrator (mysql-admin), but had no luck. It gives my the following feedback:
Code:
Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
Click the 'Ping' button to see if there is a networking problem. I press the ping button, and it seems to connect.
Code:
OpenSUSE Network :: Connecting To FTP Server - Error "could Not Bind Listening IPv6 Socket"
Aug 16, 2010I am running vsftp on one of my systems and when trying to connect to it it errors out with this: vendion@Loki:~> ftp 192.168.1.100 Connected to 192.168.1.100. 500 OOPS: could not bind listening IPv6 socket
I have tried stopping the firewall and even disabling IPv6 nothing changed, any clues as to what is going on?
Networking :: Non Blocking Socket Doing Other Tasks While Waiting For Connections In C Program?
Oct 27, 2010I need to write program for non blocking socket connections.I have made extensive research but could only get to non blocking READ or WRITE after the connection is established. run the program do a series of tasks (ex: counter printing time on screen) if there is request for connection, connect send or receive data.
View 1 Replies View RelatedProgramming :: Socket Programming - Detect Whether A Client Socket Is Closed / Active?
Mar 8, 2011iam just trying to connect to server which accepts one client and server will read(blocking operation) infinitely, but After closing the client socket the server "read operation" is returning zero and "errno variable(in errno.h)" value is also zero. how can i detect whether a client socket is closed/active..?
client.c
Serv_Addr.sin_family = AF_INET;
Serv_Addr.sin_addr.s_addr = inet_addr("127.0.0.1");
Serv_Addr.sin_port = htons(26553);
if( 0 > connect (Serv_Fds,&Serv_Addr,sizeof(Serv_Addr)) )
{
perror("connect");
return 0;
[Code]....
OpenSUSE Install :: MySQL Socket Change For 11.2 / Get The Socket To /var/run/mysql?
May 25, 2010In looking at the release notes, I saw the comment File locations changes:
* MySQL socket file and pid file were moved from /var/lib/mysql to more reasonable location /var/run/mysql by default.
* MySQL log files are in /var/log/mysql. Not sure what I was supposed to do with that information. So I ignored it. Now, I am finding some issues with it. The web server works, but any connection to the database fails with 2002: Can't connect to local MySQL server through socket '/var/run/mysql/mysql.sock' (2)The thought dawned on me that maybe all my databases were erased and none set up. Going in to the terminal, I could connect and list and query the databases. So even though I backed them up, they still are there!
phpMyAdmin gives the same error message.
However, when I go into MySQL Administrator, it works fine.
I forgot where I saw it, but the socket is still set to var/lib/mysql. I could not find any mysql install log and would say what was in my cnf.my, but it still doesn't exist just as it has not in the past. Not sure if I should allow the MySQL Administrator to create it since I always ignored the prompt in the past and it worked. (Just wishing to keep the defaults)
At first I thought the upgrade upgraded the MySQL, but it's still 5.1.39 as I believe before. I've un-installed mysql-server and re-installed it with no change.
Can anyone can tell me how to get the socket to /var/run/mysql or what else is wrong? I read one place where mysql is supposed to set it up.
Debian :: Find Out Connection Between Process And Socket?
Feb 20, 2010 I have the following problem. I want to find out connection between process and socket. When I type to the terminal the following command netstat -anpetu so I get the following output:
[Code]....
As you can see just some connection have assign PID/Programme. How can I find out Program of this socket without PID/programme. like this 0.0.0.0:52472? Certainly I know that some port are well-known but there are a lot of unknown ports(like 8307 3350 and so on).
Ubuntu Networking :: Windows Socket Connection ?
Mar 17, 2010I am trying to connect with Winsock Windows sockets from a PC running Windows XP with a utility program that enables a dialogue over sockets. I have the listener running on Ubuntu on Port 6330. I can telnet to the listener and interact from both the Ubuntu desktop and the XP PC. But my utility program using Winsock is unable to connect. I have no firewalls impeding this. Maybe there is a better vehicle than the Windows Winsock.dll? I dont need network file access, just TCP ports/.sockets.
View 1 Replies View RelatedUbuntu Servers :: Maximum Simultaneous Socket Connection?
Sep 16, 2010I'm writing a client-server program. There are more than 500 clients. I start a thread to process and response to each client and the processing needs some MySQL query. I'm looking for any possible hazards on my server!
1- Any limitation on "Maximum Simultaneous Socket Connection"?
2- Any limitation on using mysql?
3- As socket on Linux are file, Any limitation on number of sockets or threads?
I'm using a Linux server (Centos or Fedora or Ubuntu) and clients are both Linux and Windows.
Programming :: Error ""Can't Connect To Local MySQL Server Through Socket" In Connecting To MySQL In C Language
Sep 29, 2010I wrote a code in C to connect to MySQL by using mysql_real_connect function but I recieved error "Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)" (by using mysql_error function).
I also did the following things: in mysql I typed 'SHOW VARIABLES LIKE '%SOCKET%'', it returned /var/lib/mysql/mysql.sock I typed 'mysql_config --socket' in shell, it returned /var/lib/mysql/mysql.sock I modified /etc/my.cnf file
Ubuntu Networking :: Java Socket Connection Created In More Than 3 Minutes
Mar 7, 2011I'm running Ubuntu 10.10. I have a problem with any client side network communication from any java based program/application. I've tried to run the following code:
Code:
public static void main(String[] args) throws Exception {
long start = System.currentTimeMillis();
Socket s = new Socket("ubuntuforums.org", 80);
System.out.println("1. connection created in "+ (System.currentTimeMillis() - start)/1000.0 +" s");
s.close(); start = System.currentTimeMillis();
s = new Socket("ubuntuforums.org", 80);
System.out.println("2. connection created in "+ (System.currentTimeMillis() - start)/1000.0 +" s");
s.close(); }
The result is the following:
Code:
1. connection created in 189.31 s
2. connection created in 0.085 s
I've tried both java-1.6.0-openjdk and java-6-sun-1.6.0.24 with almost the same results. During the extremely long 189 seconds, the processor is doing almost nothing (java thread has 0 %). I've tried also a wireshark to check what is going on, but the first packet was released after those 189 seconds. There is nothing in log files, I have no exceptions or errors, and the connections work (after the first long delay) just fine.
Networking :: Kill A Socket Connection WITHOUT Killing Its Parent Application?
Mar 9, 2010Is there any command in Linux to kill a socket connection WITHOUT killing its parent application? For example, I have streaming server with several connected users and I want to close socket connection to one of them?
View 1 Replies View RelatedUbuntu Servers :: SSH Error: Read From Socket Failed: Connection Reset By Peer?
Dec 8, 2010figure out this error?
Code:
kradalby@hpcompaq6530b-laptop ~/.ssh $ ssh -vvv -p 110 kradalby@dfekt.no
OpenSSH_5.5p1 Debian-5+b1, OpenSSL 0.9.8o 01 Jun 2010
[code]....
General :: Socket Limit Of Guest Operating System In ESX?
Apr 4, 2010How can I know socket limit of guest operating system running on ESX server?
View 1 Replies View RelatedHardware :: PATA Socket Was Replaced With SATA Socket / Transfer Rate Of The Harddisk Would Be SATA Transfer Rate?
Jul 4, 2010My friend bought an old hard drive. He noticed something with the hard drive that it was just replaced with a SATA socket. So meaning, the SATA socket was soldered to the PATA hard disk to replace the PATA socket to SATA socket to make it a SATA.
Now the question is:
1. Does the Transfer Rate of the harddisk (that has been replaced from PATA socket to SATA socket) would be SATA transfer rate? OR would still be PATA transfer rate?
Programming :: Poll() System Call Not Returning When The Socket Is Closed Locally?
Sep 29, 2010we have a multi threaded program on Linux where one thread is waiting on poll() system call with event set to POLLIN, & another thread has closed the same socket fd (which is passed to poll) , but the poll() did not return, is this the expected behavior? From man page of poll we found that the poll should return POLLNVAL if the socket fd is closed, is my understanding correct or is there any bug in the poll()?In Solaris we observed that the poll system call is returning with POLLNVAL if the socket is closed.
View 3 Replies View RelatedServer :: Squid 2.7 Socket Failure (sometimes)
Jul 20, 2011I'm having a problem at the moment (sometimes), tail -f cache.log
[Code].....
Programming :: Chat Socket Between Client And Server
Mar 17, 2011I want to built a Chat Program (based on Socket connection) between client and server. I use the GTK+ &GLADE graphic tool. Can you send me the code for this program or any material to learn. Also, I want to know how to show the input to text view (in GTK+&Glade).
View 3 Replies View RelatedCentOS 5 Networking :: Max Socket Connexion On A Server?
Jan 8, 2009I used this Tutorial, to create a php chat daemon. But now I'm getting to the point where i've reach the max socket connexion on my centOs box... I have to much users. Which is 120. when there's more then that number of users in the chat .. things start to get messy. I have tried to change the SOMAXCONN kernel variable without success. I'm sure there is a solution to boost the number of user my chat can handle... (My server is dedicated to the chat).
View 2 Replies View RelatedServer :: ERROR 2002 (HY0000): Can't Connect To Local MySQL Server Through Socket
Mar 28, 2010Im getting this error when i try to run mysql from a shell
Code:
ERROR 2002 (HY0000): can't connect to local MySQL server through socket
I have installed MySQL over yum on fedora.
but the path and file /var/lib/mysql/mysql.sock does not exist on my system?
Server :: ERROR 2002 (HY000): Can't Connect To Local MySQL Server Through Socket
Apr 11, 2010I've tried /etc/init.d/mysql start, and it actually starts, or at least, it doesn't error out. But when I do pgrep mysql I get nothing, and when I try to login with mysql -p as root, I get
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
None of my other logins work, either, but since pgrep mysql didn't work, it's clear that MySQL just isn't running. I tried uninstalling and reinstalling mysql-server via apt-get, but I get the same thing. The logs in /var/log/syslog show this:
Apr 11 14:31:26 /etc/init.d/mysql[9774]: #007/usr/bin/mysqladmin: connect to server at 'localhost' failed
Apr 11 14:31:26 /etc/init.d/mysql[9774]: error: 'Can't connect to local MySQL server
[code].....
Server :: ERROR 2002 (HY000): Can't Connect To Local MySQL Server Through Socket '/var/lib/mysq
Apr 24, 2011I have an e-mail production server that has been running fine for almost two years.
Notice mail was not serving today and login to a bunch of errors in messages
However, I think they are all from not being able to access MySQL and when I:
mysql -u root -p
I get:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)