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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Do network devices (router or endhost) evaluate the IP source address?

Would accept a computer a packet to a established tcp connection from a computer which is not part of the connection (without the IP source address is spoofed) ? E.g. PC1 sends a HTTP Request to PC2. ...
0
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0answers
10 views

What are the minimum permissions for a libpam-ldap unix domain socket?

I'm setting up an LDAP server and libpam-ldap to run on the same host, communicating via a UNIX domain socket. I'd like to give this socket the minimum permissions necessary, so random local users ...
8
votes
5answers
13k views

Network Error: no buffer space available

After some time of running fine, one of our Windows XP SP3 machines does not open some(!) new TCP/IP connections anymore. Putty says Network Error: no buffer space available, IE won't open any new ...
0
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2answers
31 views

HAProxy max session limit

I have an Amazon OpsWorks stack running HAProxy (balance = source) and several node.js instances running socket.io. It seems HAProxy determines the max session limit for a given instance based on the ...
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3answers
1k views

Running a websocket server and a http server on the same server

I am using nginx to to serve an instance of PHP application, and also at the same time running a Ratchet app to listen to a websocket connection. Problem is, both of these instance are using the same ...
0
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0answers
22 views

wsgi nginx error: permission denied while connecting to upstream

There seem to be a few questions on stackoverflow and serverfault about this but unfortunately nothing has worked for me. I'm getting a 502 bad gateway on nginx, and the following on the logs: ...
0
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0answers
15 views

Socket Error 10054 - VS2013 Web Deploy Failing

I'm having trouble completing a web deploy from VS2013 as I posted in VS 2013 Web Deploy failure: Warning : Retrying the sync because a socket error (10054) occurred Apparently web deploy uses port ...
2
votes
2answers
5k views

Caused by: java.net.SocketException: Software caused connection abort: socket write error

I running JSP on Oracle 11g, Weblogic 10.3.4. I have 2 managed server and a oracle admin server installed. I am encountering an error where intermittently the log file of the 2 managed server and ...
1
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2answers
44 views

nginx - why i can't use variables in proxy_pass path?

Why i can't use variable $user in proxy_pass - like in example below? server { listen 80; server_name ~^(?P<user>[a-z|A-Z|0-9|_|-]+)\.example\.net$; root /home/$user/webapps/; ...
0
votes
1answer
1k views

Unable to access 3ware 3dm2 web interface, failed to start listening socket

I am unable to get to the 3ware 3dm2 web interface. When I attempt to execute 3dm2 from the command line, i get the following error "(0x0C:0x0005): Failed to start listening socket". This was working ...
3
votes
1answer
49 views

Nmap external scan shows port open, ASA says port is not open, but do get an socket

Folks, have a weird one, need your expert help. For one of our heavily used external facing server which came up in an audit, nmap -Pn scan shows the following: Starting Nmap 5.51 ... Host ...
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0answers
4 views

Scripted write-then-read from Unix domain socket using socat [migrated]

I have a simple server listening on a Unix domain socket (on a CentOS box in case that's important). When I send the command "DATE" to the socket it writes back a welcome message and then "APRIL 15 ...
3
votes
1answer
1k views

Maximum limit of filepointer in php reached and not changeable

I have a server with the current 5.3.x version installed. Since we are running a really simple and small server in php using sockets, that connects to a lot clients using sockets we need to raise the ...
0
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2answers
2k views

Configuring port in iptables for websockets

I'm implementing Ratchet's push example in my server (websockets) on port 9090. These are current iptables policies: [root@myserver ~]# iptables -L -n -v Chain INPUT (policy ACCEPT 309 packets, 22420 ...
1
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2answers
968 views

Lighttpd with FastCGI won't create /tmp/fcgi.sock on startup?

I'm running lighttpd-1.4.19 on a debian 5 box and try to run web2py with fastcgi. The problem with that is, that lighttpd does not create the socket file /tmp/fcgi.sock. If I'm creating the file by ...
6
votes
2answers
2k views

Sniff UNIX domain socket

I know that some process is writing to a certain unix domain socket (/var/run/asterisk/asterisk.ctl), but I do not known the pid of the sender. How can I find out who is writing to the socket? I have ...
6
votes
5answers
6k views

Can't connect to MySQL using 'localhost' but using '127.0.0.1' it's ok?

My /etc/hosts file looks like this: 127.0.0.1 localhost # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ...
6
votes
2answers
2k views

Sharing unix socket via docker volume - permission denied

I try to share my php5-fpm socket via a volume with my nginxwebserver. Fpm and nginx are running if different containers and I want to get them working via a shared volume where I place the socket ...
1
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0answers
122 views

Siege: descriptor table full sock.c:119: Too many open files

I am trying to make a stress test in my own server using siege with the following command: $ siege -c 500 myweb.com/somefile.php But I get this error: [error] descriptor table full sock.c:119: Too ...
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votes
1answer
98 views

KVM unix socket file permission for VNC

I'm using kvm-qemu/libvirtd for a bunch of kvms. I'm using vnc for the graphical interface. By default, it listens on a tcp socket. I want to have it listen on a unix socket instead. Looking at some ...
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0answers
32 views

After sending Duplicate ack by the server, it stop responding [closed]

My TCP client communicates with multiple 3rd TCP servers. However one particular server produces duplicate ack and stop responding in the specific time only. That particular server is OK other time. I ...
0
votes
1answer
324 views

node.js, socket.io only working on localhost, can't access from intranet

I am using node.js and socket.io for the real time notification system. I have tested node.js and socket.io with simple chat code, it pretty good with localhost but can't access the same from the ...
0
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2answers
129 views

How to let PHP connect to database by using UNIX socket (Joomla)

I'd like to have my PHP applications such as Joomla make use of the UNIX socket to connect to the local mysql database. I've already configured the php.ini with: mysqli.default_socket = ...
0
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0answers
28 views

How to work whit socket_file httpd (nginx-uwsgi)

I am trying to run Nginx/uWSGI/Django, the last remaining step is to run the socket_file all I get is a 502 Bad Gateway. Route my django application. #/home/deploy/webapps/myapp Configuration ...
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1answer
394 views

IIS Reverse proxy and websockets, failed websocket handshake

I am running a little website using IIS 7.5 on Windows Server 2008 R2. I've got a node.js application too running on port 3000. Http calls from the website (client browser) are reverse proxied from ...
1
vote
1answer
384 views

Rails application deployment, nginx, unicorn, capistrano socket error

I am deploying a rails application to a digital ocean VPS. I have followed https://coderwall.com/p/yz8cha . All things done well, but now the browser shows only a blank page. Nginx log contains: ...
3
votes
0answers
253 views

WebRTC on standalone asterisk - no audio

After struggling with Asterisk for WebRTC for a few weeks now, I decided to put my problem on this forum. My Problem is as follows: Im not getting audio from WebRTC to WebRTC clients. I work in a LAN ...
6
votes
5answers
4k views

Forward local port or socket file to remote socket file

Quick question - I run two linux boxes, one my own desktop and the other my VPS. For security reasons on the VPS end I opted for socket connections to MySQL (/var/run/mysqld/mysql.sock). I know I can ...
0
votes
1answer
124 views

Can't boot Mysql on Centos 7

I've installed mysql on Centos 7 (mysql-community-server) as root. The problem is that I can't start the daemon with "service mysqld start", It never return me to prompt and even if I try to use ...
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votes
1answer
19 views

Is it possible to bind a socket with NIC Queue?

when i open a new socket linex system automatically bind it to a NIC queu. Currently i have two sockets and i want to bind them to two different NIC queues. My question is 1)Is it possible to bind ...
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1answer
183 views

Web socket regular disconnections on OS X

We have a SPA that runs SockJs both client and server (NodeJs) side. For Windows workstations we have no problems maintaining web socket connections to servers deployed in Windows Azure. But for some ...
16
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3answers
11k views

What's the difference between Unix socket and TCP/IP socket?

It's from this answer: http://stackoverflow.com/questions/2482411/is-this-pdo-bug-fixed-now/2482424#2482424
3
votes
2answers
2k views

nginx proxying websockets, must be missing something

I have a basic chat app written in node.js using express and socket.io; it works fine when connecting directly to node on port 3000 But doesn't work when I try to use nginx v1.4.2 as a proxy. I ...
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0answers
73 views

Yet another “Can't connect to local MySQL server through socket” after a security update

SOLVED As yoonix pointed out, it was only an issue with the root partition being full... Thanks for your help! - So yes, this question has been asked several times, here and elsewhere. I apologize ...
3
votes
1answer
478 views

Unix socket connection limit

This may appear like an already discussed/answered question. But I am specifically looking for info which I couldn't find anywhere answered clearly. I have an Nginx + php-fpm setup which uses unix ...
0
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0answers
49 views

Writing to Unix Domain Socket from rsyslog

I want to write output messages from rsyslog to a Unix Domain Socket. I want to do this so that I can read the messages from that socket using my script and parse log messages further. I try to use ...
1
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0answers
205 views

Performance issues with Apache + Django + socket.io (long-polling) + Proxy

I'm trying to set up a website with django, apache and socket.io. Thanks to some tutorials and other stackoverflow questions, I managed to make everything work, except for a severe lag, that occurs ...
2
votes
2answers
87 views

Limit to number of listening ports in linux

I have tried to launch a script to listen to thousands of tcp ports (1000 to 10000) but it appears to be hitting a limit of 1024 listening ports. I've confirmed this via netstat and closed ports above ...
0
votes
0answers
91 views

Nginx websocket proxy incorrect response

I was trying to set up nginx as a proxy to my server (Goliath) which happens to be serving both regular and websocket connections. This is my setup: upstream goliath { server localhost:9696 ...
0
votes
1answer
33 views

same port opened - one on the asterisk (*) address and one on localhost

running on Mac with two jetty instances i've arrived to this peculiar situation: ~$ lsof -ni :9905 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 40320 ******* 394u ...
2
votes
1answer
46 views

php-fpm: What is the bottleneck for accepting connections faster?

On a php5-fpm status page, what is the bottleneck that is preventing my server from accept()'ing new sockets fast enough? pool: www process manager: static start time: ...
1
vote
1answer
3k views

WebSocket Connection closed before receiving a handshake response

Due to WebSocket connections I am facing issue and due to this other response to stop receiving. I have configured BIMServer to response back to my application and render 3D view loading individual ...
0
votes
0answers
97 views

Client can't connect the server using Web Socket Protocol

I have a WebSocket WCF based server. a web (HTML) client is connecting this server using WebSockets. The server worked well with all clients, till we stumble a client, Chrome (And Firefox) running on ...
0
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3answers
712 views

Linux command to wait for a SSH server to be up

I have a script which creates a virtual machine and gives me back an IP address. Then I would like to do something like this: waitforssh 192.168.2.38 && ssh 192.168.2.38 And it will wait ...
0
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1answer
308 views

Deploying node.js application on Ubuntu VPS

I created an real time android application backed by a node.js application. I use express, socket.io, mongodb and ubuntu for my backend. But my problem is on how I can possibly run it in production or ...
0
votes
1answer
47 views

nginx handle multiple locations for one server

I need to setup a virtual host to run my users.example.com website. It needs PHP support via php-fpm. The ideia is to have a mapping like this: users.example.com/~user1/folder/file.php -> ...
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vote
2answers
180 views

Postfix & Amavis - Use UNIX Soket for Communication

I currently using a complex mailserver setup using Postfix, Dovecot, Amavis and Spamassassin. Everything works fine but I want to improve the Postfix-Amavis-Communication. At the moment, postfix will ...
1
vote
2answers
422 views

Check if a path exceeds maximum for Unix domain socket

Operating systems limit the length of a path of a Unix domain socket. How can I check whether a particular path is within that limit? Or, to put it another way, how can I check the maximum permitted ...
2
votes
1answer
325 views

SELinux: no audit errors but nginx permission errors

I try to isolate a SELinux problem with nging/munin. I see that error message in "/var/log/nging/error.log": [crit] 8802#0: *55 connect() to unix:/var/run/munin/fcgi-html.sock failed (13: ...
0
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1answer
215 views

apache mod proxy_wstunnel invalid utf8 during websocket upgrade

I am experiencing an intermittent problem when connecting the jetty web-socket client to the server. The good people at Jetty assure me it is not a problem with Jetty. On the server side I have ...