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I have an array of ipv4 addresses (over 750k addresses).These IPs have so long been stored in hash:ip ipset of Linux through the Go application. I want to reduce this to shortest (if that's a good ...
black.swordsman's user avatar
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-1 votes
1 answer
44 views

For purpose of testing a network device I need to create a packet bigger than 64KB and save it in a pcap file to be replayed by tests. How can I do it? Apparently scapy can't: from scapy.all import * ...
LetMeSOThat4U's user avatar
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0 answers
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I’m running Docker on a Linux EC2 instance and Docker is unable to pull images from GitHub Container Registry (GHCR). When pulling the image, I get the following error: Error failed to resolve ...
Brianna's user avatar
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-3 votes
0 answers
32 views

If calico using veth pair, I am thinking it might be possible because there is a peer that visible from host's interface list. But if ipvlan is used, inside pod, there is an interface like myLan, it's ...
Russel's user avatar
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2 votes
3 answers
77 views

What I want to ask is this: When running the server code in Visual Studio and the client code in Unity on Windows, the server successfully receives responses from the client. However, when running the ...
온라인 게임 만들고 싶다's user avatar
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0 answers
39 views

I want a simple Powershell GUI, to have the local computer let me know when any of its NICs drop connection. The results should be a .csv file, stored in a folder named NIC_Drops, located in the root ...
Geoffrey Bertollini's user avatar
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4 votes
1 answer
290 views

I'm currently trying to figure out how to use an AF_XDP socket without relying on libxdp as I want to learn how it works under the hood. I'm having an issue where the packet is seemingly getting ...
nee's user avatar
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2 votes
1 answer
85 views

I am implementing a destination NAT-like behavior by hooking into NF_INET_PRE_ROUTING and NF_INET_LOCAL_OUT to modify the destination IP address and recalculate the checksums. nf_tracer_handler(void *...
yan3ku's user avatar
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3 votes
1 answer
152 views

I am looking for some guidance on using io_uring for high-fan-out TCP writes. I have a Rust application that waits for an event in a tight loop. Whenever the event occurs, the same payload needs to be ...
Johannes Ohlemacher's user avatar
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1 replies
50 views

Thank you all for reading my post in advance. So I have my VMware Virtual machine (Nat) which is listed as below: huang@ubuntu:~$ ip route show default default via 192.168.189.2 dev ens33  proto ...
jiaxiang huang's user avatar
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2 votes
1 answer
117 views

I have this Linux C project that (among others) sends (bigger than 1500 bytes) raw Ethernet frames between network interfaces of different processes. I have a bunch of system tests where this ...
Kees-Jan Hermans's user avatar
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What's the best way to allow programs to discover each other on the network? Let's say we are writing a system that tracks the usage of computers over the network. We have an agent program that sends ...
Isembart's user avatar
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2 votes
1 answer
60 views

What I try that works: npm "request" package works fine in the Node JS backend, however request is a deprecated package with security problem. I don't feel like to keep using it. request({ ...
hi there's user avatar
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0 replies
46 views

I am trying to use nvim as the external editor for Godot, with GDScript. I have found a decent amounts of post explaining how to do it, so I have some idea on how to do it. No solutions perfectly fit ...
RayureBob's user avatar
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2 votes
0 answers
120 views

I'm writing an application for a peer to peer service with a TURN server, but I'm struggling to construct one. If my understanding is correct, there are three steps needed for a successful peer to ...
Akash Jain's user avatar
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Advice
1 vote
2 replies
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I have the following architecture: Browser App (React) -> Nginx K8S Ingress -> Streaming Service A (Kotlin, POD) -> Streaming Service B (Java,POD) From the browser I upload a json array of ...
zolee's user avatar
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-4 votes
1 answer
94 views

I'm working on a project about VPN tunneling, I've been following along with this example (https://www.youtube.com/watch?v=t_VmiXNWKkk&list=WL&index=2&pp=gAQBiAQB). The guy demonstrates ...
Robert Chaney's user avatar
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2 votes
1 answer
76 views

I'm trying to parse the Handshake response packet from MySQL client/server protocol For the task I'm connecting to the application via mysql cli client: mysql --version mysql Ver 9.5.0 for macos15.4 ...
Deyan Georgiev's user avatar
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2 votes
2 answers
111 views

Alright, so bear with me. This took me an entire day to dig into. what I'm doing I'm running a C program on a remote host over SSH. The program calls a local redis database IP and port and also 8.8.8....
NorseGaud's user avatar
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0 answers
79 views

I am developing an Android app similar to Yacine TV that streams video content using a WebView. However, on some devices running Android 12 and 13, the video player shows a black screen while the ...
Ethan Parker's user avatar
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0 votes
0 answers
91 views

I’m working on a tool using raw system sockets. The tool needs to send packets with low-level protocols such as IEEE 802.1X. When I inspect the packets in Wireshark, I notice that the radiotap header ...
Wew Auction's user avatar
  • 54
Advice
1 vote
1 replies
75 views

We can fully emulate SMTP with current technology. Clearly, I can send a JSON containing the title, the body, and any other email information. The forwarding and replying mechanism can just be regular ...
Mingruifu Lin's user avatar
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0 votes
1 answer
83 views

I have a win32 app opening a log file on a network share using CreateFile and WriteFile (non overlapped) to write records. What I am seeing when the network share is lost, WriteFile reports an error (...
Paul Marriott's user avatar
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Advice
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6 replies
216 views

I come seeking advice. I'm attempting to make a game with C and Vulkan (no engine). It will be low scope. It has a low-mid poly aesthetic, fairly involved mechanics, and will be multiplayer, ...
Clause's user avatar
  • 59
2 votes
1 answer
132 views

I'm writing a TCP/IP stack for embedded systems, but I wanted to test it on my host system. Originally I tried with tap0 + a bridge. But I quickly realized it would make the most sense to bind to the ...
Charles Lohr's user avatar
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0 votes
0 answers
75 views

I made a simple console messenger to test the possibility of connecting 2 or more computers for my game using RadminVpn+Sockets but its not working. I can connect to myself using my radmin ip but if I ...
Gerokop's user avatar
  • 9
0 votes
0 answers
81 views

I'm developing a Flutter app that loads a web page containing an embedded video player. When the page loads, the browser internally makes several HTTP requests (for example, .m3u8 or .ts files), but I ...
mikealexx's user avatar
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0 votes
0 answers
46 views

I'm integrating BoringSSL into my networking library for secure communication. I've observed that both SSL_read() and SSL_write() operations can potentially trigger both read and write activities on ...
benrush's user avatar
  • 373
3 votes
2 answers
227 views

We use the following function to test internet connectivity every 5 seconds. But in some part of the world, this function always returns false. Now, the problem is we can set a proxy server in Windows ...
Ming's user avatar
  • 601
0 votes
0 answers
81 views

I am working on an ARP spoofing project using C++ and the WinPcap library. I have an issue where two seemingly identical methods of constructing the ARP packet result in different behaviors in ...
nnutural's user avatar
  • 23
0 votes
0 answers
85 views

I am working on a C++ program on Linux that involves interacting with network namespaces (netns) and a TAP device. My procedure is as follows: My process starts in an initial network namespace (e.g., ...
Aythsr's user avatar
  • 1
1 vote
0 answers
29 views

Briefly: is the requirement to re-create TCP socket after it failed (e.g. on timeout) documented in some official manual, guide etc? In details: Some code I stuck upon is faulty in the following way: ...
Rodion Gorkovenko's user avatar
  • 2,912
-1 votes
1 answer
89 views

I’m trying to start a per-shard TCP listener in Seastar, where each shard binds to its own port (6010 + shard_id). On shard 0, everything works — the listener binds and accepts connections fine. But ...
Somesh Mohan's user avatar
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0 votes
0 answers
108 views

I’m developing an MQL5 Expert Advisor that should connect to a local TCP server (127.0.0.1:5001). The server is running and responds correctly to Telnet. In MetaTrader, I added 127.0.0.1:5001 in ...
franzisko's user avatar
  • 1
0 votes
1 answer
205 views

Assuming we know the key and the IV for the data we're getting from the stream, is it possible to decrypt it within stream? I encrypted the same message three times and then decrypted it all at once, ...
user30252103's user avatar
  • 43
0 votes
1 answer
55 views

I have a method that connects my app to a Dask Gateway Server def set_up_dask(dashboard=False, num_workers=4, min_workers=4, max_workers=50): gateway = Gateway("http://127.0.0.1:8000") ...
BallpenMan's user avatar
  • 225
3 votes
1 answer
212 views

I need to use socket() but the args given to the function make me confused. I have to do an school exercice where I have to use socket for intercept ethernet frame (more specifically arp spoofing). ...
surcouf's user avatar
  • 33
0 votes
0 answers
125 views

I have a transparent proxy that works by spoofing addresses and ports, but for some reason it's not working. On a Debian 12 amd64 server, I used iptables -t mangle -A PREROUTING -j NFQUEUE --queue-num ...
warmBy's user avatar
  • 1
0 votes
0 answers
110 views

I'm analyzing a binary protocol captured via IRP_MJ_READ. Each message is 11 bytes, and I suspect the last 2 bytes are a CRC-16 value.Here’s an example of the message in hex: 00 02 c1 00 10 00 00 00 ...
Hasan Abo Ali Alhaj Juma's user avatar
  • 1
1 vote
1 answer
165 views

I'm creating a tap device using the tun/tap interface by opening /dev/net/tun. However, when I try to get the MAC address using the SIOCGIFHWADDR ioctl call I get the wrong MAC address. If I make the ...
nee's user avatar
  • 3,055
1 vote
0 answers
153 views

I’m working with a Linux TUN device (MTU 65535) where I write jumbo TCP packets (10KB+), and my goal is for the kernel (via software GSO) or the NIC (via TSO if available) to segment them into MTU-...
Alex Barysevich's user avatar
  • 624
0 votes
1 answer
141 views

I'm grappling with a highly intermittent java.net.SocketException: Broken pipe error while uploading multiple images from my developemnt Android app using HttpURLConnection to a production Java server....
Tyler's user avatar
  • 3
2 votes
1 answer
138 views

I have written a database server and client, and i'm using a poll loop #include <stdio.h> #include <stdbool.h> #include <getopt.h> #include <stdlib.h> #include <stdlib.h> ...
Kouroshtkk's user avatar
  • 111
3 votes
1 answer
143 views

I'm practicing in networking programming. Currently I'm trying to make a program that crafts a single ARP packet and receives the response. Further, I want to expand it to handle the whole subnet. But,...
Ambrosius's user avatar
  • 33
2 votes
0 answers
206 views

I can connect a Unix server and client socket just fine, but only if they are on the same machine. My code does not work even if they are running on separate machines connected to the same router. To ...
Jen's user avatar
  • 21
0 votes
1 answer
108 views

I am trying to extract the IP address of a Linux interface as a 32 bit integer. Similar to this question: Get IP address of an interface on Linux but unfortunately this question extracts it as a ...
intrigued_66's user avatar
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1 vote
0 answers
270 views

I'm using Rust's std UdpSocket to send data from one socket to another one locally. It all works fine if I set no read timeout or if I set a "big" read timeout like 10ms. Once I set the ...
Tim Woocker's user avatar
  • 2,056
1 vote
0 answers
62 views

I'm writing a Linux kernel module that prints the routing tables using dmesg. To do this, I'm trying to use the fib_get_table function to access FIB (Forwarding Information Base) tables. Here’s a ...
Alessandro Torrisi's user avatar
  • 11
0 votes
0 answers
157 views

Tried to run this script in application env and just commands on their own in terminal. public resetNetworkAdapter(): void { // windows reported everything is OK for most of adapters, // but ...
bl4z3rr666's user avatar
  • 21
0 votes
0 answers
124 views

I used wandb.init and resulted in the error below. wandb: Currently logged in as: MyWandbAccount (accountname) to https://api.wandb.ai. Use `wandb login --relogin` to force relogin wandb: ERROR Run ...
Xingrui Zhuang's user avatar
  • 27

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