Minimal web server using netcat

I'm trying to set up a minimal web server using netcat (nc). When the browser calls up localhost:1500, for instance, it should show the result of a function (date in the example below, but...

Listening on multiple ports?

Can't you listen on a port range with netcat? You can scan a range, but not listen it appears. So only solution is scripting?

python equivalent of netcat

I have a TCP server for which I need to write a client in Python. The server is an arduino using the arduino_uip library; the server code is (almost) the same as the TCP server example of that...

C# UDP Server Asynchronous Multiple Clients | SocketException When Client Disconnect

I've been working on a socket server program in C# (I was inspired from this post) and my problem is that when a client disconnects an exception "An existing connection was forcibly closed by the...

Issue with netcat timeout

Why does the following netcat command not time out if the attempt to connect takes longer than 3 seconds (ie: when the port isn't open)? I assumed that the -w flag would be what I needed. OS is...

When will LogStash exceed the queue capacity and drop messages?

I am using LogStash to collect the logs from my service. The volume of the data is so large (20GB/day) that I am afraid that some of the data will be dropped at peak time. So I asked question here...

Netcat communication in JAVA

I am trying to to get a connection from an Java Application to a Server. I am able to get data from the server by typing in the shell: cat query.txt | nc server port Now i am trying to do the...

How to make an HTTP GET request manually with netcat?

So, I have to retrieve temperature from any one of the cities from http://www.rssweather.com/dir/Asia/India. Let's assume I want to retrieve of Kanpur's. How to make an HTTP GET request with...

Set source port when sending udp message with echo?

I'm using echo "This is my data" > /dev/udp/192.168.0.92/7891 in a bash script to test udp communication with a device. The device then returns the message. I've seen via wireshark that my...

Fluentd - "incoming chunk is broken"

I run fluentd image on docker container. When I open TCP connection with telnet (or netcat) and send "message" string, following message occurs: 2017-01-24 10:22:00 +0000 [warn]: incoming chunk is...

Linux Netcat Listener

I am trying to understand why netcat listener isn't working in my Kali Linux VM. From what I understand,I open a terminal and open the port. nc -l 155 Then, I open another terminal within my VM...

Access TIKA URL using postman/curl

I just started Tika in server mode in my Mac and I'm facing some problems. Although I am able to access the URL, the console hangs and I only get the extracted files when I cancel the request. For...

AWS ECS tasks keep starting and stopping

I am trying to use ECS for deployment with travis. At one point everything was working but now it stopped. I am following this tutorial https://testdriven.io/part-five-ec2-container-service/ There...

Why iperf bandwidth is highter than dd->netcat

I want to measure actual speed of 1Gb Ethernet interface on my embedded device with ARM cortex-A8 two-core 600MHz processor, connected to PC on the other side. I've tried to check it with iperf...

What does connecting to own network daemon mean?

i'm currently doing the bandit wargames from overthewire.org (for those of you who don't know it's a website with different tasks that you get to do in order to improve your hacking skills). i did...

Using netcat with FIFOs

I'm trying to get diagnostics data from a device to which I connect over the network. It offers a nice tight proprietary protocol where you send a 3 or 4 character request and receive a <~30...

ERROR creating Service web with unrecognized option '--with-freetype-dir=/usr/include/'

After reinstall of Kubuntu 18 I run my docker project with command to run my first project: docker-compose up -d --build and got long output (it worked more 1 hour I suppose) and errors at end...

Stream webcam with GStreamer (RTSP)

I have Kodak PIXPRO SP360 4k camera connected to the Jetson Nano or TX2 via USB cable. I want to be able to see that video over browser, either with RTSP stream, Webrtc or something else. It...

How to open/enable port in Mac OSX, port 2377 for docker swarm

I am struggling with opening a port, 2377 for docker swarm connectivity. Mac OSX specification: System Version: macOS 10.15.2 (19C57) Kernel Version: Darwin 19.2.0 There are lot of ways that I...

Control an interactive. netcat connection with Python (subprocess or similar)

I am trying to control netcat session using Python, the connection would be something like this: listening on [any] 1234 ... connect to [127.0.0.1] from (UNKNOWN) [127.0.0.1] 37878 ...

Postman using wrong (nonsense?) code in OAuth2 flow against Keycloak server

I'm attempting to use Postman (Version 7.20.0 - linux 5.5.8-200.fc31.x86_64 / x64)to authenticate using the OAuth2.0 "Authorization Code" flow against a Keycloak 9.0.0 server, backed by Google as...

Docker exposed port stops working when connected to a VPN

I'm trying to create a Docker image which will forward a port through a VPN. I've created a simple image which exposes port 5144, and tested that it works properly: sudo docker run -t -d -p...

Wordpress and Woocommerce installation with docker

Good morning, I'm trying to create an installation of wordpress with woocommerce already installed and active using docker-compose file with 2 containers, one with mysql taken from bitnami...

Loading the pre-trained model of torch and sentence_transformers when running in a docker container failing

I am getting below error while loading the pre-trained model of torch and sentence_transformers("distilbert-base-nli-stsb-mean-tokens") when trying to run in a docker container. Error: Invalid...

Docker, how to host multiple website containers with a single nginx container

Actually when I want to change to other project I have to stop docker-compose on my current project, and then go to the next project and run docker-compose up -d I have to do this because if I try...

HikariCP Main - Connection [email protected] marked as broken because of SQLSTATE(08006), ErrorC ode(17002)

UPDATE: I've upgraded application to Pro. Some time issue was not appearing what give me hope that somehow issue got fixed. And one week ago issue came back. During issue being reported by...

Memcached service is working as expected but stats items is empty

I'm using Django with docker - In my Docker-compose I created a memcached service: memcached: build: context: . dockerfile: memcached.Dockerfile ports: - '11211:11211' ...

docker-compose up airflow-init hangs: no network connection between containers

I'm trying to set up airflow instance using docker-compose as described in official docs and I'm stuck at airflow-init part. It looks like there is no connectivity between containers, but I don't...

Cannot resolve ORA-12514, TNS:listener does not currently know of service requested in connect descriptor

I am trying to figure out how to enable the listener for my pdb in sql developer. I have a pdb named mydatabase, with schemas created. I have an application connecting with...

Airflow set python library versions to improve build speed

It used to take ~5 minutes for our Airflow deployment's docker image to build, and all of a sudden it is taking over an hour. With that said we haven't had to rebuild our image in a few months, so...