BitTorrent does not need to connect to any particular member in a swarm, it’s not a p2p chat protocol where two specific end points want to talk to each other. All it cares about is that the connection graph of the swarm has a sufficiently high connectivity degree. In other words, getting clients behind a … Read more
P2P connectivity in a nutshell. Assume we’re talking about UDP here. The steps below can also be applied to TCP with some adjustments. Enumerate all your local IP addresses (usually only 1). Create a UDP socket on a given port number** for each adapter with an IP address. For each socket created in step 1, … Read more
libtorrent.org build on top of boost, boost-asio is a library for P2P work good for me. It implement BitTorrent protocol, using TCP for transport data, TCP/UDP for peer exchange.
Skype works in a very interesting way. From what I’ve read (and this is a while ago) it works as follows: Skype server maintains a list of all users and IPs. Skype user A wants to speak to user B Skype user A sends a network packet to user B’s IP address and waits for … Read more
It is possible. I see at least 2 parts to your question. (It is not going to be HTTP packet. It is a lot more complex than that.) First off, I believe you might be talking about a concept called decentralized P2P network. The main idea behind a decentralized peer-to-peer network is the fact that … Read more
You should try libtorrent (rasterbar). http://libtorrent.org If you want to write your client in python, on linux, install it with: sudo apt-get install python-libtorrent A very simple example of python code to use it to download a torrent: import libtorrent as lt import time import sys ses = lt.session({‘listen_interfaces’: ‘0.0.0.0:6881’}) info = lt.torrent_info(sys.argv[1]) h = … Read more
I wouldn’t say that something uses a wire-level protocol or doesn’t – I’d talk about which wire-level protocol it uses. Basically, if something’s communicating with a remote machine (even conceptually) then there’s some data going across the network connection (the wire). The description of that data is the “wire-level protocol”. Even within that, you would … Read more
I know google just came out with a cross platform api for ios and android devices to communicate with each other. I don’t know what you’re exactly looking for but this one lets you pass small binary payloads between Android and IOS devices. they don’t have to be on the same network at all either … Read more
P2P connectivity in a nutshell. Assume we’re talking about UDP here. The steps below can also be applied to TCP with some adjustments. Enumerate all your local IP addresses (usually only 1). Create a UDP socket on a given port number** for each adapter with an IP address. For each socket created in step 1, … Read more
This is what Freenet basically is, Freenet is free software which lets you publish and obtain information on the Internet without fear of censorship. To achieve this freedom, the network is entirely decentralized and publishers and consumers of information are anonymous. Without anonymity there can never be true freedom of speech, and without decentralization the … Read more