# p2p chat app with libp2p
## Intro
This program demonstrates a simple p2p chat application. It can work between two peers if
1. Both have a private IP address (same network).
2. At least one of them has a public IP address.
Assume if 'A' and 'B' are on different networks host 'A' may or may not have a public IP address but host 'B' has one.
Node A Viedo
[](https://asciinema.org/a/0j1M9VBmuHJ94KdleU2r3Tb1g)
Node B Viedo
[](https://asciinema.org/a/cY5VFxZGgmOq6Z021UGAomUrp)
## Clone code
```
git clone https://github.com/netwarps/libp2p-rs.git
```
## Rust server and Rust client
```
cd libp2p-rs
```
On node 'B'.
```
RUST_LOG=info cargo run --example chat server -s 8086
> hi (received messages in green colour)
> hello (sent messages in white colour)
```
On node 'A'. Replace 127.0.0.1 with <PUBLIC_IP> if node 'B' has one.
```
RUST_LOG=info cargo run --example chat client -d /ip4/127.0.0.1/tcp/8086/p2p/12D3KooWDpJ7As7BWAwRMfu1VU2WCqNjvq387JEYKDBj4kx6nXTN
> hi (sent messages in white colour)
> hello (received messages in green colour)
```
## Go server and Go client
run the following:
```
cd libp2p-rs/examples/chat/go
go build
```
On node 'B'.
```
./chat -sp 8086
```
On node 'A'.
```
./chat -d /ip4/127.0.0.1/tcp/8086/p2p/12D3KooWDpJ7As7BWAwRMfu1VU2WCqNjvq387JEYKDBj4kx6nXTN
```
## Rust server and Go client
On node 'B'.
```
cd libp2p-rs/
RUST_LOG=info cargo run --example chat server -s 8086
```
On node 'A'.
```
cd examples/chat/go
./chat -d /ip4/127.0.0.1/tcp/8086/p2p/12D3KooWDpJ7As7BWAwRMfu1VU2WCqNjvq387JEYKDBj4kx6nXTN
```
## Go server and Rust client
On node 'B'.
```
cd examples/chat/go
./chat -sp 8086
```
On node 'A'.
```
cd libp2p-rs/
RUST_LOG=info cargo run --example chat client -d /ip4/127.0.0.1/tcp/8086/p2p/12D3KooWDpJ7As7BWAwRMfu1VU2WCqNjvq387JEYKDBj4kx6nXTN
```