Nonblocking slot_subscribe stuck

[yipu]

Problem

I wrote a demo program to subscribe to on-chain slot events. But the program stuck and did not receive any events from the websocket RPC (from Alchemy).

The library I use is solana_client::nonblocking::pubsub_client::PubsubClient.

use futures_util::StreamExt;
use solana_client::nonblocking::pubsub_client::PubsubClient;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let ps_client = PubsubClient::new(
        &"wss://solana-mainnet.g.alchemy.com/v2/xxx".to_string(),
    )
    .await?;

    let (mut accounts, unsubscriber) = ps_client.slot_subscribe().await?;

    let mut count = 0;
    println!("{}", 1);
    while let Some(response) = accounts.next().await {
        println!("{:?}", response);
        count += 1;
        if count >= 5 {
            break;
        }
    }
    println!("{}", 2);

    unsubscriber().await;

    Ok(())
}

Is that because of the way I use the nonblocking lib?

Proposed Solution

None

[github-actions]

This repository is no longer in use. Please re-open this issue in the agave repo: https://github.com/anza-xyz/agave