batch_headers/
batch_headers.rs

1//! Batch headers example - demonstrates batch downloading block headers
2//!
3//! Run with: cargo run --example batch_headers --features use-websocket
4
5use electrum_client_netagnostic::{Batch, Client, ElectrumApi, Param};
6
7fn main() {
8    let server = std::env::var("ELECTRUM_SERVER")
9        .unwrap_or_else(|_| "wss://rostrum.riften.net:443".to_string());
10
11    println!("Connecting to {}...", server);
12    let client = match Client::new(&server) {
13        Ok(c) => c,
14        Err(e) => {
15            eprintln!("Connection failed: {:?}", e);
16            return;
17        }
18    };
19
20    println!("Connected! Testing ping...");
21    if let Err(e) = client.ping() {
22        eprintln!("Ping failed: {:?}", e);
23        return;
24    }
25    println!("Ping successful!");
26
27    // Create a batch request for multiple block headers
28    let mut batch = Batch::default();
29
30    // Request headers for blocks 0, 1, 2, 3, 4
31    let heights = [0, 1, 2, 3, 4];
32    for height in &heights {
33        batch.raw(
34            "blockchain.block.header".to_string(),
35            vec![Param::Usize(*height)],
36        );
37    }
38
39    println!("\nBatch requesting {} headers...", heights.len());
40
41    match client.batch_call(&batch) {
42        Ok(results) => {
43            println!("Got {} results:", results.len());
44            for (i, (height, result)) in heights.iter().zip(results.iter()).enumerate() {
45                let header_hex = result.as_str().unwrap_or("<not a string>");
46                // Show first 32 chars of header hex
47                let preview = if header_hex.len() > 64 {
48                    format!("{}...", &header_hex[..64])
49                } else {
50                    header_hex.to_string()
51                };
52                println!("  [{}] Block {}: {}", i, height, preview);
53            }
54        }
55        Err(e) => {
56            eprintln!("Batch call failed: {:?}", e);
57        }
58    }
59}
batch_headers/batch_headers.rs

batch_headers/
batch_headers.rs
