Questions tagged [socket]
A socket is an abstract network construct with a sending and receiving side. In most modern operating systems (OS) there are device representations, and programming tools to address sockets.
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Websockets and Firewall
I asked this question on Stack Overflow first, but then I thought Server Fault could be a better place to post it.
I have two WebSocket servers both running on different ports than 80 and 443. These ...
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Trouble getting Unicorn to talk to Nginx
I've seen all of the other questions on here but none of them seem to work for me. Whenever I try and access my site I'm getting a connection refused error through the nginx logs. I'm assuming there ...
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How to monitor socket connection usage and exhaustion on a server?
I have a service endpoint (java) that will be getting bursts of thousands of requests per second.
In my load testing I had to tweak the server because I would run out of open sockets as there were ...
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NGINX: How to proxy http(s) traffic to one server and ws(s) traffic to another?
I'm new to nginx and how it handles locatoins, and was hoping to get help for a problem I'm having:
On the same server I have an Apache web server and a websocket server. Apache works on port 8080 ...
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Apache Proxy Pass and Web Sockets
I'm using Apache with the mod_proxy module to reverse proxy my Node.js application through to port 80, so that we can access it as an internal application.
I have a file in sites-enabled which ...
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What does TCP: too many orphaned sockets mean?
When I use dmesg to look at linux kernel messages, I see a flood of....
TCP: too many orphaned sockets
messages. My guess is this is sockets that are hanging around in TIME_WAIT after being closed ...
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Single TCP-CLOSE_WAIT connection brings down application till restart
Recently found a behaviour where my application had a connection in TCP Close_wait state till the app was restarted (after about 5 hours).
But during this period the SUnreclaim space was also ...
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When a socket switch to TIME_WAIT state, why I can't see its inode number?
I'm developing a program in python that parses /proc/net/tcp informations, but unfortunately, while I was doing this, I saw a strange thing.
Practically, when a socket change in TIME_WAIT state, ...
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Directory for PHP 5 FPM socket files is deleted after reboot on Ubuntu Server
I've created a directory to store socket files for PHP 5 FPM: sudo mkdir /var/run/php-fpm. It is owned by root:root as well as core PHP FPM process.
When PHP FPM is starting, it creates socket files ...
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Allow user to bind only certain ports on Linux [closed]
Welcome, I'm looking for equivalent of mac_portacl from FreeBSD. I want to assign to one user only certain ports.
Filtering it by iptables isn't enough, because when process works, the port is blocked ...
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Fixing WebSocket 404 Error With Dynamic WebSocket URL's Under Reverse Proxy
I am running Ubuntu, Apache, mod_proxy_wstunnel(Enabled), Shiny-Server, and R. I have setup shiny-server to listen locally, and Apache to Proxy requests for the shiny-server. I have also setup a basic ...
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How do you control the file ownership of a socket managed by launchd
I'm working on writing a daemon that talks to other daemons in the same project over UNIX sockets. For security purposes, it's critical that these daemons only talk amongst themselves (and can't, for ...
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Updated php5-fpm, can't use socket anymore
Earlier today, I updated packages on one of my servers. One of those packages was an update to php5-fpm, which seems to have broken my ability to utilize unix:/var/run/php5-fpm.sock.
Disclaimer: I ...
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Websocket & HTTP proxy with server between two firewalls
I have a server ("A") running behind a firewall, which serves HTTP and websockets. I have no control over the firewall, but do have an external server ("B") to which the internal server can connect (...
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Inject packet to a different NFQUEUE
I have an NFQUEUE, for IPv6 packets hooked to PREROUTING chain of mangle table in ip6tables.
Once I receive a packet in user application, I modified the header. Infact, modified the header from IPv6 ...
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Postgres application tries to use incorrect socket file
I have a local postgres server running (on ubuntu linux). It is listening via a socket file:
$ ls -la /var/run/postgresql/
total 8
drwxrwsrwx 2 postgres postgres 100 2011-04-15 19:06 .
drwxr-xr-x ...
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Websocket on dreamhost shared hosting
I would like to build a small webapp with some i/o communication with the server via ajax.
Since I'm on a dreamhost shared server I already know that I cannot use node.js to build my app. But now, ...
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Weird socket behavior in VirtualBox (NAT + PAT)?
I have a Linux VM with NAT and PAT configured. Let's say ports 2000 and 2001 are forwarded to the VM. These ports are also configured for external access on a device such as a router using a domain ...
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Adobe AIR ServerSocket to remoteIP?
I have a mobile multiplayer game that uses the AIR serverSocket class to connect to an AIR server app on a laptop set up as a wifi hotspot.
The requirements have changed and now the server must be ...
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Communicating between two servers sitting behind their respective NATs
I'm building an web app (Server A) that communicates with a remote server (Server B) that is connected to the internet.
Server B resides behind a NAT and is listening to communication on 3 non-...
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Connection Refused Error Java/Linux
I'm trying to move an existing project over to a new (linux) server environment (note, I have no direct access to the code nor do I have any knowledge about the project in general - talk about a great ...
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Debian 7.4 drops UDP traffic randomly
I'm running Debian 7.4, KVM VPS with the latest updates. I'm getting UDP ports randomly closed for 2-10 minutes for no reason. I'm running gaming servers and the port tester shows the ports are closed....
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Cannot get Web Sockets to work with virtual IP redirection
I can't get Web Sockets to work on my site when I access it via its virtual IP. If I use it's real (intranet) IP, everything works perfectly. If I use the virtual IP, I get this on Google Chrome ...
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Nginx websocket 502 bad gateway
I'm trying to use nginx as proxy for websocket nodejs server, but I'm always getting 502 bad gateway.
my domain config:
upstream server {
server 127.0.0.1:8090;
}
server {
listen 8085;
...
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How to check if a process is non-blocking in linux without using a stack tracer?
A multi-cpu server is running several processes. One process has a thread that should always be in a spinning state, using 100% of the CPU it's been assigned. My current method (besides asking the ...
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Use stunnel for Socket.io SSL support
I am trying to add SSL support to my node.js app, while connecting via socket.io. The traffic to socket.io is going to port 80. I would like stunnel to grab encrypted traffic from port 443, unencrypt ...
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How to deploy a WebSocket application without downtime?
Deploying HTTP applications without downtime isn't that hard: HTTP is stateless, so with a load balancer in front of 2 HTTP applications solves the problem. If both applications use a common backend ...
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TCP client and server work for X times but hang after that
I'm a software engineer, but I think my problem needs a network engineer...
For the software side of things, have a look at my Stack Overflow question:
https://stackoverflow.com/questions/21641219/...
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WebSocket not Working on Apache Tomcat 7 on AWS ElasticBeanstalk
I just set up me web app on top of ElasticBeanstalk. Everything seemed to work fine, until I discovered that my instance couldn't use WebSocket, every time I tried to connect internal server error ...
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F5 Big-IP and WSS WebSockets
We have a F5 Big-IP load balancer that handles the SSL, so the servers behind it get HTTPS rather than HTTP (SSL off loading). I don't have version handy, but in the login page I can see "Copyright ...
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On Linux, is there a configurable socket timeout between kernel and user space?
I'm currently fighting with some crappy piece of (custom) server software which doesn't accept its connections properly (written in Java by a PHP programmer who never before touched sockets let alone ...
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Does the IIS 7.5 has any anti-dos or anti-flood mechanism built in and enabled by default?
Inside my windows 2008 R2 I am running a secure websocket server (XSockets.NET). When there are too many connections to the server, the server just stops responding at all. The developers claim, that ...
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How to open a port below 1024 in Cent OS for socket.io?
I'm trying to open port 843 in my Cent OS 5.2, I added following line to etc\sysconfig\iptables :
-A INPUT -p tcp --dport 843 -j ACCEPT
and then updated my iptables service. I need to listen to that ...
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Apache server : Reverse proxy and websockets via mod_proxy_wstunnel
I have a little problem with the web sockets and my reverse proxy apache, i have upgraded in latest release 2.4.5 and loaded the module mod_proxy_wstunnel.
The httpd.conf :
<VirtualHost *:80&...
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How can we configure the Bitnami Joomla stack to open a socket on startup?
I have deployed the Bitnami Ubuntu Joomla! 3.1.5-2 (64-bit) stack on Amazon Cloud:
http://bitnami.com/stack/joomla/cloud/amazon
By default, the stack is configured to run PHP using PHP-FPM. I have no ...
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php-fpm + persistent sockets = 502 bad gateway
Put on your reading glasses - this will be a long-ish one.
First, what I'm doing. I'm building a web-app interface for some particularly slow tcp devices. Opening a socket to them takes 200ms and an ...
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Linux server resend SYN ACK
I am troubleshooting a connection timeout problem between two Linux boxes, where it seems the ACK to SYN-ACK was lost on the server's stack.
The tcpdump is done on the server side.
The client got ...
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.NET 2.0: An established connection was aborted by the software in your host machine
Scenario:
I try to post a video to YouTube with the following code:
YouTubeEntry createdEntry = service.Upload(newEntry);
This works fine on my developer machine (running Windows XP).
It fails on a ...
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Apache2 mod_proxy_fcgi closes a connection after each request
I set up mod_proxy_fcgi do go with apache and php-fpm. If I read the FCGI spec correctly, the typical flow for the communication between a server is to keep the connections between the web server and ...
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Do keepalives to socket connections exist?
Pre briefing:
Although my question is broad on purpose, I am dealing with nginx connecting to php-fpm (fcgi), which is served via a local socket (/tmp/somesocket.socket).
Nginx has a setting to ...
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Python cant connect to local MySQL server through socket [closed]
I have a python script which is designed to add things to a MYSQL database. The error I get is this:
Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock
I've checked the ...
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Allow socket connection in Solaris
I have 2 solaris machines and I have an application that opens a socket via port 8556, but for some reason the connection keeps getting refused.
When I run a netstat command on the second server (...
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Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) on subsequent connection through terminal
My sincere apologies for asking something that obviously has been answered before. The fact that I'm posting is that i would like to be absolutely sure since it's about a live server running currently....
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Don't manage to set up iptables rules for client/server socket exchange on localhost
I am a client/server-IPC-iptables near-newbbie. I have made my homeworks deeply during one year and thought this should work :
# cat /root/firewall/iptable | nocomment
iptables -F
iptables -F -t nat
...
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python reports socket in use, netstat and others claim its not
We have a strange socket issue with a RHES3 box:
Python 2.4.1 (#1, Jul 5 2005, 19:17:11)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-52)]
Type "help", "copyright", "credits" or "license" for more ...
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How do I map a socket port between the guest and the host on Parallels? [closed]
I am trying to analyse some client server applications on Mac and Windows and I would like to configure Parallels so it will map a set of ports between the guest and the host.
This would allow me to ...
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what is a 4 socket server? What is "socket" in this context? [closed]
I see that the IBM System x3750 M4 is a "4-socket" server. What does that mean? Does that mean that the server has 4 network ports? What is a "socket" in this context?
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How to expose a UNIX domain socket directly over TCP
I'd like to have a UNIX domain socket, say /var/program/program.cmd for example, exposed via TCP, lets say on port 12345. I'd also like this to be running full time in the background.
What's the best ...
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I want to install pysockect or any other websocket in centOs 64 bits
I have get a tutorial to install pywebsocket in linux.
http://www.travisglines.com/web-coding/how-to-set-up-apache-to-serve-html5-websocket-applications-with-pywebsocket
But I am using centOs for my ...
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How does server handle multiple clients on the same port? Multiple sockets or multiple ports? [closed]
I have a misundertanding about some networking theory and because I couldn't find a definitive answer online (most resourceas are theory and theory etc without concise examples) I'm asking here.
...