init: added root README.md

README.md

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+# Task 5
+
+## Prerequisites
+
+Ensure you have the following installed on your system:
+
+- [libvirt](https://libvirt.org/) (latest version recommended)
+- [Terraform](https://developer.hashicorp.com/terraform) (latest version recommended)
+
+## Deploying environment
+
+NOTE: You must have `libvirt` daemon running running
+
+### Goto Terraform directory
+
+```bash
+cd terraform
+```
+
+### Create and edit dotenv file
+
+```bash
+cp .env.template .env
+```
+
+### Init Terraform
+
+```bash
+terraform init
+```
+
+### Start the environment
+
+```bash
+terraform apply
+```
+
+NOTE: Wait for several minutes until all required things will provided to the vms
+
+## CheatSheet
+
+### Commands for `client`
+
+```bash
+# For HTTP/1.1 (TCP)
+curl server:80/<size>MB.file -o <size>MB.file
+
+# For HTTP/2 (TCP)
+curl --http2-prior-knowledge server:81/<size>MB.file -o <size>MB.file
+
+# For HTTP/3 (UDP)
+./curl --http3-only --insecure https://server:443/<size>MB.file -o <size>MB.file
+
+# For TFTP (UDP)
+tftp server -c get /var/www/<size>MB.file
+```
+
+### Merge `pcap` files
+
+```bash
+mergecap -w merged.pcap http1.1-bbr.pcapng http1.1-reno.pcapng http3.pcapng tftp.pcapng
+```
+
+### Change CC
+
+```bash
+sysctl net.ipv4.tcp_congestion_control=bbr|reno -w
+```
+
+### Change link profile
+
+```bash
+./scripts/change_profile
+```
+
+And follow the instructions