I also encountered the same thing, I did so I found that my pdsh default rcmd is rsh, not ssh, rsh and ssh remote login authentication is not the same, when installing hadoop I configured ssh localhost password-free login, but rsh is not possible. so，try： 1.check your pdsh default rcmd rsh pdsh -q -w localhost … Read more
Though its far from complete or correct and has lots of bugs, but I have started this project here https://winrtsock.codeplex.com. Have not implemented any listen/accept as of yet
I’ve been reading the The ultimate SO_LINGER page, or: why is my tcp not reliable blog post a lot. I recommend you read it too. It discusses edge cases of large data transfers with regards to TCP sockets. I’m not the expert at SO_LINGER, but on my server code (still in active development) I do … Read more
In your example client, you don’t seem to be reading the result from the server. When I add code to do that, I see the results from the server. Also, take a look at how I used defer and break to make the reader goroutine exit. Server package main import ( “log” “net” ) func … Read more
Just run the standard NTP daemon. It does have options to take input from several GPS devices as well as talking to network servers. Edit: I was referring to http://www.ntp.org/, not the one that comes with Windows. I don’t have any suggestion as to what NTP clients are best for windows, but for Unix machines … Read more
While maybe gifsockets would work (I haven’t tried that before…), there is no network traffic while I am looking at the image other than the initial image load. I am also seeing it it jump from 41 to 42 again. A Reload took it down to 39. It appears to be just a script that … Read more
If you have enough RAM it’s not too hard to handle 1M or more connections on linux. These guys handled 10 million connections with a java application on a single box using regular CentOS kernel with a few sysctl tweaks: sysctl -w fs.file-max=12000500 sysctl -w fs.nr_open=20000500 ulimit -n 20000000 sysctl -w net.ipv4.tcp_mem=’10000000 10000000 10000000′ sysctl … Read more
I think you need to change your max file descriptors. I have run into the same problem on one of my development VMs before and needed to change the file descriptors max, not anything with inotify settings. FWIW, your program runs fine on my VM. ·> ulimit -n 120000 But after I run ·> ulimit … Read more
First, accept() the incoming connection. The accepting process now has a handle to the listening socket, and the newly accepted socket. Fork and: In the child: Close the listening socket. Do stuff with the accepted socket. In the parent: Close the accepted socket. Resume the accept loop. The various socket resources will be reclaimed when … Read more
This is the book to learn TCP/IP, doesn’t matter what language you will be using: W. Richard Stevens, TCP/IP Illustrated, Volume 1: The Protocols The following is the C network programmer’s bible, highly recommended: W. Richard Stevens, Unix Network Programming, Volume 1: The Sockets Networking API Out of online resources, Beej’s Guide to Network Programming … Read more