Some things look strange to me: What is the distinction between 0.0.0.0, 127.0.0.1, and [::]? How should each part of the foreign address be read (part1:part2)? What does a state TimeWait, CloseWait mean? etc. Could someone give a quick overview of how to interpret these results? ...
Unix.....>>netstat -al | grep 8787 (will see packets on port 8787) ...
Hello, Say I have accepted() a connection to my server (that runs on a Solaris) and the client has closed the connection. What is the state of the socket (in netstat categories) of the socket on the server side before I close() it on the server side? Is it BOUND? ...
Hello everyone, I listed open file for a process (a daemon) on my box which runs Mac OS X 10.5 : >lsof -p 89 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME ... xxxxx 89 xxxxxxxx 9u unix 0x34f8990 0t0 ->0x34f8880 I 'd like to find a way to open this socket and write in it. (that's my obsession...
I copied the following script and run it to have it listen on port 80. But netstat doesn't show port 80. Why does netstat not sow it, or the Perl script is not correct? #!/usr/bin/perl -w use Socket; use IO::Handle; $port=80; $host='localhost'; $packhost=inet_aton($host); $address=sockaddr_in($port,$packhost); socket(SERVER,AF_I...
I am trying to use port 80 for my application server, but when I perform "netstat -aon" I get TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 When I look up the process in task manager, it shows PID 4 is SYSTEM, thats it, not extension... nothing, just "SYSTEM". Whats going on here? I'm afraid to end this process, what do I do? UPDATE: I've ...
Hi all, My app makes an outbound connection to a server using a specific source port (in anticipation of firewall problems - a hardened system will probably require ports to be specified ahead of time). My problem is that my app makes the connection initially. However, if the connection ever breaks it will try again but the socket wil...
I'm trying to see the results of an incoming ping on a target windows machine. This is needed to verify that the ping, which is running in a background thread, is being sent from the originator. I have tried netstat to no avail. Are there any other approaches I could try? Thanks. ...
I'm trying to re-launch a WCF service that I killed earlier, but I'm getting an AddressAlreadyInUseException. The port it's attempting to use is 1819. I ran netstat -nao from the command line, and have found there is a listening process on port 1819, that has a PID of 4840. I went into Process Explorer (from SysInternals) to try to ki...
On Sunos netstat -in gives me below output. Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue lo0 832 127.0.0.0 127.0.0.1 20026 0 20026 0 0 0 nxge0 100 192.168.0.0 192.168.0.31 40957 0 465768 0 0 0 Is it possible to change the input/output values to volume i.e. i...
So lets say there's a server process that takes way too long. The client complains that it "times out." Correct me if I'm wrong, but this particular timeout could have to do with apache's timeout setting, but not necessarily. I believe this to be the case because when testing the page in question we couldn't get it to time out reliably ...
Our company has a mobile app with clients connecting via sockets through AT&T's 3G towers in San Francisco. Lately I've been noticing some sockets never close - FIN_WAIT1 and TIME_WAIT is common. I've even seen sockets open > 24 hours. And of course the client's are not actually in the app as we've not received updates from them. Is...
Hey I am basically trying to write a pstree-like command except that it should follow processes across machines. What I mean is that if I run this : $ ssh $node sleep 1000 Then the command should display something like this : ssh $node -- ($node) sleep 1000 And if I'm running : $ ssh $node ssh $node sleep 1000 ssh $node---($nod...
I want to be able to run "netstat -n" and grab the output somehow so I can then write it out to another file. How can I do this in C++ on Windows CE Thankyou Chris ...
Hi ..When I run this command netstat -t 1 -i 2>&1 > $NETStat_OUT_FILE & inside a script , the output of netstat does not get redirected to the file.. Could any one find a solution for this ? ...
I'd like to know if a particular process is using a given port, i.e. netstat -ban. I came across using IPGlobalProperties to get the list of active connections, but this doesn't seem to include process information. It would be nice if there exists some class in C# that lets me do this programmatically. Ideally, I wouldn't have to pipe ...
I am new to java and I have been testing my application all day long. I just did netstat -ano and it gave me a huge listing of active connections (listening, established) does this mean when i close my appliation these connections are not being shutdown (close())? here is a screenshot: any advise on how to go about closing th...
I have an application which occasionally leaves an entry in the output of the netstat command which indicates a UDP socket is associated with a port on another machine, and the state that the netstat command reports is "established". To my understanding, this does not make sense -- UDP is a connectionless protocol, right? When this hap...
I'm a computer science student with a few years of programming experience. Yesterday, while working on a project (Mac OS X, BSD sockets) at school, I encountered a strange problem. I was adding several modules to a very basic "server" (mostly a bunch of functions to set up and manage an UDP socket on a certain port). While doing this, I...
While trying to debug a network problem, I've run into some difficulties understanding the output of some diagnostic tools. Context: distributed application over 7 nodes on a Linux cluster. 1GB ethernet, sustained data rate while on operation: 600Mbits per node (up+downstream). The symptom is a blocked TCP connection: sender blocks on a...