A communication end-point for networking, for CPUs please use [processor-socket]

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147 views

What happens when I terminate a process and the socket send buffer is not empty?

In Windows (and probably in other operating systems), if a process has a TCP connection with another process on another machine, and then I terminate the process, an RST packet will be sent to the ...
3
votes
1answer
1k views

SYN-ACK not received

On a standard TCP connection between server and client, I have this issue: the SYN-ACK is not received from the client, while it is sent from the server. I could see this on Wireshark from both server ...
2
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1answer
516 views

Simulating a network issue for a specific application

This is somehow a developer question, but as it is more related to operating systems and network connections, I will post it here and not on Stack Overflow. I'm trying to simulate a situation when a ...
2
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1answer
268 views

How does the Inetutils telnet utility determine if a connection is still alive?

I've started using sockets in programming with Java (I have experience with Python), and while testing a server that I'd written with the telnet command, I noticed that the utility responds ...
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1answer
189 views

Emulate console by sending data on one UDP port, and receive text from another

I'm trying to establish a “console-like” connection with a National Instruments cRIO-FRC. It broadcasts its console output onto 255.255.255.255, UDP port 6666. I can listen to it with: socat ...
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1answer
284 views

systemd: starting service that depends on sockets does not work

I'm using systemd to start a WiFi and power monitor service script that scans for an SSID, brings up the network and an SSH tunnel and does a few other tasks. Much to my surpise it doesn't always ...
1
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1answer
218 views

Linux Kernel TCP socket functions

So I have been looking through the Linux Kernel v3.8.0-19-generic source code and I noticed that the proto struct, whose members are virtual functions for socket operations depending on the particular ...
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1answer
780 views

Can Connectify Dispatch be used for video streaming?

Here is my situation. We are specialized in video producing local sports for web-streaming. In most cases clients provide us with poor bandwidth, which is absolutely critical for us. There is a ...
1
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1answer
612 views

Restricted ports to non-admins on Windows 7

I work in a restrictive desktop/network environment and I am not an admin on my laptop. The ports available to me are limited. E.g. when I tried running Tomcat, the system refused to open a socket ...
1
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1answer
637 views

fcgiwrap listening to a unix socket file: how to change file permissions

I have a web server (nginx) and a CGI application (gitweb) that is ran with fcgiwrap to enable Fast CGI access to it. I want the Fast CGI protocol to take place over a unix socket file. To start the ...
0
votes
1answer
47 views

Looking for a replacement audio jack

I am trying to repair a PC audio jack, however I am not able to find a replacement which is the same as the original. This is the PC board that I am reparing. I am reparing the headphone port. On ...
0
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1answer
59 views

How to use multiple network interfaces?

I need to use multiple network interfaces in a C program with sockets. My interfaces are wlan0 and eth0. When I connect eth0, the ping through wlan0 returns "Host unreachable", and consequently the ...
0
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1answer
263 views

Python: TCP/IP Socket Client, how to send login packet?

I wanted to create a bot to send login/join packets to a game server. So it will join then send more packets for it to write something in the chat, but I'm not sure how to do this. If someone could ...
0
votes
1answer
184 views

How to free a port on OS X when lsof(1) reports that it is not in use

I am a developer working in OS X on Eclipse. A bug I have been working to fix in a web application results in some very strange behavior when resetting an instance of Tomcat, resulting in the ...
0
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1answer
151 views

TCP socket to serial port

Is is possibile to remotely access a serial port by tcp socket server? Exists this kind of software? It is the opposit of this question: Any free application to redirect serial communication to ...
0
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1answer
40 views

TCP socket communication from client to server

I am trying to test the performance of a client/server application that uses TCP communication. If I trigger multiple requests from the client, would it flow through the same connection/pipe to the ...
0
votes
1answer
148 views

I added a simple socket perl server script under Cygwin Xinetd to echo client input but it reads blank instead

I installed a x32 version 1.7.33 of Cygwin on my x64 Windows7 machine. I added a new service under /etc/xinetd.d/ccapi. $ cat ccapi-stream service ccapi { id = ccapi-stream disable = ...
0
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1answer
179 views

websocket responses appear to be cut off

So my websocket server (socket.io) is sending JSON data to my clients who connect with their web browsers (e.g. Firefox). It works fine when I am sending short responses. However, when I send a ...
0
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1answer
22 views

MAMP : socket problems for external ressources

i have a problem with sockets on MAMP. i access to my localhost website with localhost:8888/sitename but external ressources like CSS are loaded with localhost/url without socket so request is ...
0
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1answer
332 views

Error getting server's IP address using Python on CentOS

I'm using Python's socket module to get the server's IP address server_ip = socket.gethostbyname(socket.getfqdn()) I get this error: socket.gaierror: [Errno -2] Name or service not known Weird ...
0
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1answer
992 views

cannot start mysql server bind socket denied

I have been trying to start mysql server but got this error: Can't start server : Bind on unix socket: Operation not permitted 2013-10-21 13:53:54 25098 [ERROR] Do you already have another mysqld ...
3
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0answers
13k views

socket.error: [Errno 10013] Port forbidden access permissions

When trying to use a Python script I get this error: socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions I put the post on ...
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0answers
23 views

How to monitor the unix socket statistics in OSX per-seconds

I can monitor a net-device in the OSX, like below $ netstat -I eth0 -b 1 1000 input (Total) output packets errs bytes packets errs bytes colls ...
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0answers
92 views

netstat -o timer value “probe”

A bit of background on the scenario. I have a distributed application running on RH6.5 that uses JMS (OpenMQ 4.5.2) to send messages between hosts. One host (Host A) receives information from network ...
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681 views

Can't connect to socket listening on 127.0.0.1 but works for 'localhost' in Windows 10

I have a clean install of Windows 10 Pro x64 and I’m trying to run PostgreSQL server on it. It used to work perfectly on Windows 7, but Windows 10 is behaving really weird: If I configure PostgreSQL ...
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0answers
6 views

Route only on output chain?

I have two machines A and B. I want to send iperf traffic from A to B, but first have it route through a userspace program on A. I did this with a tunneling device: therefore, I used the command ip ...
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0answers
66 views

How do I troubleshoot if I see the incoming packet in tcpdump, but not at the socket?

For example, I see that the incoming packet in tcpdump, but not in strace for the program that is listening the appopriate socket. How do I trace the "fate" of this incoming packet on Linux? I ...
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0answers
107 views

linux + what are the messages bad tty under /var/log/messages file

under /var/log/messages I see the following messages "bad tty" what the meaning of these messages? second is it caused because some application that called - owstd ? as we can see from the log? ...
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0answers
498 views

Re-stream (forward) UDP-Live-Video-Stream (using winsock) reduce video quality?

So, I used ffmpeg to stream the live webcam using UDP protocol to port 1111 : ffmpeg -f dshow -i video="Lenovo EasyCamera" -f mpegts udp://localhost:1111 When I played it directly by ffplay from ...
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0answers
615 views

Mysql socket error 2002 on Linux Mint - Access denied

My apache and xampp servers are running on port 2145 and 16443 respectively. sudo /opt/lampp/lampp restart Restarting XAMPP for Linux 1.8.2-5... XAMPP: Stopping Apache...ok. XAMPP: Stopping ...
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0answers
215 views

How to forward data to mysql server using socket module in python

How to forward data to mysql server using socket module in python, i have try to import socket and connect it to mysql server for test, but have no data received from it, my code like this def ...
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0answers
56 views

Communicate a button click event with sockets

Desire: I have a device or micro-controller i'll call it a mc that I need to communicate to when a web page button is clicked using sockets. MC1 <button id ='on1' name='mc1'>On</button> ...
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0answers
411 views

websocket behind a firewall

I have a computer with a strong CPU and a lot of memory (strongy) running Windows Server 2008 R2, that is blocked by a firewall from any access from the outside world. I have a computer with a weak ...
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0answers
664 views

Java - SocketException: Address family not supported by protocol family: connect

My Java connections seem to be failing a lot at the moment. When I run one piece of software with cmd open I get the above exception and sometimes class files don't load for web based Java programs. ...
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0answers
451 views

SocketSniff equivalent for 64-bit applications

SocketSniff allows you to watch the Windows Sockets (WinSock) activity of the selected process. On x64 version of Windows, SocketSniff can only work with 32-bit programs. Is there any SocketSniff ...
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0answers
63 views

Differences in RJ-45 plugs & keystone jacks for CAT5, CAT5e, CAT 6, CAT6a & CAT7 compliance?

I've read detailed insights on differences in the CAT Cabling. What is the difference between various cable types like Cat 5, Cat 5e and Cat 6? What is the difference between Cat 6 and Cat 6e ...
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0answers
9 views

Connect two applications/devices through web service

I want to send commands from one application (e.g. running on mobile device) to another application (e.g. running on embedded device) which is located in a different network. I don't want to use VPN ...
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0answers
74 views

Understanding “cat proc/net/udp”

# cat /proc/net/udp | egrep "sl|3ADBFE0A" sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops 16: 3ADBFE0A:007B ...
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176 views

“Could not create unix socket lock file” with MySQL 5.7.10 on OS X 10.11.2

I've been trying to install MySQL 5.7 on OS X El Capitan using Homebrew, however when it came to getting the server up and running, I cannot seem to get a lock file created. When I run mysqld_safe, ...
0
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0answers
115 views

BubbleUPnP http error java.net.SocketTimeoutException

I'm setting up a BubbleUPnP server so I can stream my music to myraspberry pi. I've installed everything but the connection doesn't work. I'm using Windows 7 on my laptop. I've forwarded the ports of ...
0
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0answers
70 views

How to communicate with a LaunchAgent via Unix Sockets?

I'm trying to setup a LaunchAgent (running in the current user's UI context) that can receive "commands" like a server. The "commands" are sent by a LaunchDaemon running as "root" user, or some other ...
0
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0answers
66 views

Socket.IO & Millions of requests

I am working on a social media company which has almost half of a million users. It's an iOS and Android application. I just joined them to build their website so I want to use socket.io for the ...
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0answers
26 views

Connect from A to C using B in the middle

What software can be used to do a connection: A <-> B <-> C Where: A is a windows pc. B is a windows pc on a remote desktop (with an static ip) C is another computer that expect connections ...
0
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0answers
75 views

How to connect two debian VMs using vmware workstation so that one acts as a web server and the other as web client

I want to connect two virtual machines running using VMWare workstations - Debian Linux and I have setup private DNS server on one VM named "Server" and other VM is named "client". I am trying to ...
0
votes
0answers
2k views

error: [Errno 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted

I am creating system tests on a Windows7 machine using python, in which I need to open various socket connections to other machines. I also have several virtual IPs added to the local machine. These ...
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0answers
302 views

VirtualBox and Websockets

I am using Virtualbox with Linux host and Windows guest. When I try to use websites that makes use of websockets it's not working properly (not getting messages). I believe this can be fixed with ...
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0answers
193 views

Using Tap/Tun to intercept packets at IP level

I am working on a research project involving ARP poisoning. I would like to intercept packets on the IP level. If my machine receives a packet with an IP address not destined to it's own IP ...
0
votes
0answers
2k views

Default Gateway IPv6 but IP set on IPv4

I have a client who has a network setup. I have a couple of devices which work on the network using socket communication which I want integrated onto their network. There is a PC which is to be made ...
0
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0answers
70 views

Security risks and prevents for sending files over sockets

I am attempting to do Raspberry Pi development and at the moment, I'm normally writing all of the Python code on my laptop and then would have to use a SSH client to send the files across. I've ...
0
votes
0answers
505 views

Accessing serial port via sockets

I'm on windows and I need to access my com5 serial port via sockets. I tried serproxy but it does not work. Is there a better tool to do it? This serial port com5 is a virtual serial port of my 3g ...