nic | Nic is a HTTP request client | REST library

Good day for everybody. I would need to create a powershell script that will send xml with post request as multipart/form-data and receives it back. On the official site (only available in Czech) there is only this little code of html form:

I need to create a TCP session "manually", without using the connect() function. I have tried to use RAW sockets. But in this case, I only get copies of the incoming IP packets. The original incoming packets slip through to the kernel and it generates an ACK response packet that damages my protocol.

Next, variant 2, I can write a virtual eth interface driver (kernel module) and route incoming traffic to it using iptables. But there is a patched non-original (non vanila) kernel on the machine. Normal linking of the module with the kernel is not possible.

Variant 3. I also tried not to assign an IP address to the NIC interface. In this case, the network TCP/IP layer module in the kernel is not activated and it is possible to generate and receive arbitrary IP packets on the link (ethernet) layer using the PF_PACKET socket domain type in the socket() function. But at this time, any other applications using the TCP/IP protocol can’t work.

How can this problem be solved in other ways?

It would be nice if it were possible to intercept packets going from the network interface to the kernel, that is, intercept the SKBuf buffer. But I don't know how to realize it.

I am working on a p2p application and to make testing simple, I am currently using udp broadcast for the peer discovery in my local network. Each peer binds one udp socket to port 29292 of the ip address of each local network interface (discovered via GetAdaptersInfo) and each socket periodically sends a packet to the broadcast address of its network interface/local address. The sockets are set to allow port reuse (via setsockopt SO_REUSEADDR), which enables me to run multiple peers on the same local machine without any conflicts. In this case there is only a single peer on the entire network though.

This all works perfectly fine (tested with 2 peers on 1 machine and 2 peers on 2 machines) UNTIL a network interface is disconnected. When deactivacting the network adapter of either my wifi or an USB-to-LAN adapter in the windows dialog, or just plugging the usb cable of the adapter, the next call to sendto will fail with return code 10049. It doesn't matter if the other adapter is still connected, or was at the beginning, it will fail. The only thing that doesn't make it fail is deactivating wifi through the fancy win10 dialog through the taskbar, but that isn't really a surprise because that doesn't deactivate or remove the adapter itself.

I initially thought that this makes sense because when the nic is gone, how should the system route the packet. But: The fact that the packet can't reach its target has absolutely nothing to do with the address itsself being invalid (which is what the error means), so I suspect I am missing something here. I was looking for any information I could use to detect this case and distinguish it from simply trying to sendto INADDR_ANY, but I couldn't find anything. I started to log every bit of information which I suspected could have changed, but its all the same on a successfull sendto and the one that crashes (retrieved via getsockopt):

I compiled qemu-system-x86_64 on aarch64 host, and was able to run a x86_64 guest with a command like

I'm trying to simply deploy a Azure Storage account with a Private Endpoint using an ARM Template using Complete Deployment.

Template is below:

I'm trying to set the "network_interface_ids" within "azurerm_virtual_machine" to the output of one of my modules, but am receiving the following error during the "terraform plan" and can't figure out where I'm going wrong:

I'm pretty new to terraform and I'm trying to learn and write a TF code to automate Azure VM deployment. I'm trying to cover each parts as modules (except rg) rather than keeping it in a single main.tf file.

I'm creating a single Vnet with 3 subnets inside. Please find my code for the subnet module. Please help me with below two points.

Subnet.tf

When I try to attach a BPF program in XDP offload mode, I get Invalid argument. I get the same error if attach through code or by using bpftool. Here's how I'm attaching using netlink:

Hey Brilliant Stack overflow community,

I encountered an interesting scenarios regarding dealing with alert like pop up user authentication box.

1: website used (a practice website): https://the-internet.herokuapp.com/

2: When I clicked in to Basic Auth, there was a alert like pop up window show up (see below).

3: What I tried so far.