Second node not building. Error: InvalidMultiaddr

[varun-doshi]

Second node not building. Error: InvalidMultiaddr

[aditya172926]

I am not able to reproduce the error. The ping example works fine for me.
Doesn't look like a crate bug.

My system config:
rust version: 1.74.1
libp2p: 0.52

[dariusc93]

Could you provide any code? The ping example works fine, but it looks like you may have altered the code. Also, if you are running the code twice on the same machine, make sure the port number is different for each since it would have already been assigned to one address (in this case "65332" is assigned on one node, so it cannot be used on the second node).

[thomaseizinger]

Running target\debug\p2pRecipe.exe 'C:/Program Files/Git/ip4/127.0.0.1/tcp/65332'Error: InvalidMultiaddr

This log suggests that the path to the program is also passed as an argument which obviously cannot be parsed as a multiaddress.

[varun-doshi]

Here is the code:

`
use futures::prelude::*;
use libp2p::{noise, ping, swarm::SwarmEvent, tcp, yamux, Multiaddr};
use std::{error::Error, time::Duration};
use tracing_subscriber::EnvFilter;

#[tokio::main]
async fn main() -> Result<(), Box> {
let _ = tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.try_init();

let mut swarm = libp2p::SwarmBuilder::with_new_identity()
    .with_tokio()
    .with_tcp(
        tcp::Config::default(),
        noise::Config::new,
        yamux::Config::default,
    )?
    .with_behaviour(|_| ping::Behaviour::default())?
    .with_swarm_config(|cfg| cfg.with_idle_connection_timeout(Duration::from_secs(u64::MAX)))
    .build();

swarm.listen_on("/ip4/0.0.0.0/tcp/0".parse()?)?;

// Dial the peer identified by the multi-address given as the second
// command-line argument, if any.
if let Some(addr) = std::env::args().nth(1) {
    let remote: Multiaddr = addr.parse()?;
    println!("The input:{:?}", std::env::args().nth(1));
    swarm.dial(remote)?;
    println!("Dialed {addr}")
}

loop {
    match swarm.select_next_some().await {
        SwarmEvent::NewListenAddr { address, .. } => println!("Listening on {address:?}"),
        SwarmEvent::Behaviour(event) => println!("{event:?}"),
        _ => {}
    }
}

}
`

On further trying to debug, I got this error:

I was trying the debug(just added a few println statements) and now on running the second peer this is what pops up

error: linking with link.exe failed: exit code: 1104

note: LINK : fatal error LNK1104: cannot open file 'D:\VSCode Rust\p2pRecipe\target\debug\deps\p2pRecipe.exe'

[thomaseizinger]

I don't have a windows machine so I can't reproduce this. Can you use WSL instead?

[aditya172926]

Here is the code:

` use futures::prelude::*; use libp2p::{noise, ping, swarm::SwarmEvent, tcp, yamux, Multiaddr}; use std::{error::Error, time::Duration}; use tracing_subscriber::EnvFilter;

#[tokio::main] async fn main() -> Result<(), Box> { let _ = tracing_subscriber::fmt() .with_env_filter(EnvFilter::from_default_env()) .try_init();

let mut swarm = libp2p::SwarmBuilder::with_new_identity()
    .with_tokio()
    .with_tcp(
        tcp::Config::default(),
        noise::Config::new,
        yamux::Config::default,
    )?
    .with_behaviour(|_| ping::Behaviour::default())?
    .with_swarm_config(|cfg| cfg.with_idle_connection_timeout(Duration::from_secs(u64::MAX)))
    .build();

swarm.listen_on("/ip4/0.0.0.0/tcp/0".parse()?)?;

// Dial the peer identified by the multi-address given as the second
// command-line argument, if any.
if let Some(addr) = std::env::args().nth(1) {
    let remote: Multiaddr = addr.parse()?;
    println!("The input:{:?}", std::env::args().nth(1));
    swarm.dial(remote)?;
    println!("Dialed {addr}")
}

loop {
    match swarm.select_next_some().await {
        SwarmEvent::NewListenAddr { address, .. } => println!("Listening on {address:?}"),
        SwarmEvent::Behaviour(event) => println!("{event:?}"),
        _ => {}
    }
}

} `

On further trying to debug, I got this error:

I was trying the debug(just added a few println statements) and now on running the second peer this is what pops up

error: linking with link.exe failed: exit code: 1104

note: LINK : fatal error LNK1104: cannot open file 'D:\VSCode Rust\p2pRecipe\target\debug\deps\p2pRecipe.exe'

Tried this on a Windows OS setup.
Still not able to reproduce the error. The code works fine, just correcting the return type of the main function
async fn main() -> Result<(), Box<dyn Error>> {...} like it is in the example.

[aditya172926]

Link error looks like a microsoft linker is failing to open the .exe file.
This points to the improper, outdated or no installation of Microsoft Windows SDK.

Try upgrading your downloads from MS Visual studio. @varun-doshi