Function spv 

pub fn spv(spv_cmd: &Value, api_host: &str) -> Value

Examples found in repository

examples/crosschain.rs (line 223)

fn poll_for_spv_proof(spv_cmd: &serde_json::Value, api_host: &str, max_attempts: u32, interval_seconds: u64) -> serde_json::Value {
    for attempt in 1..=max_attempts {
        println!("SPV proof attempt {}/{}", attempt, max_attempts);
        
        let spv_result = fetch::spv(spv_cmd, api_host);

        // Log diagnostic hints when no proof
        if !has_spv_proof(&spv_result) {
            if let Some(err) = spv_result.get("error") {
                println!("(diagnostic) SPV response error field: {}", err);
            } else if spv_result.as_object().map(|o| o.is_empty()).unwrap_or(true) {
                println!("(diagnostic) Empty SPV response – likely not yet indexed. Waiting...");
            } else {
                println!("(diagnostic) SPV response keys: {:?}", spv_result.as_object().map(|o| o.keys().collect::<Vec<_>>()));
            }
        }
        
        // Check if we got a valid SPV proof
        if has_spv_proof(&spv_result) {
            println!("✓ SPV proof obtained!");
            return spv_result;
        }
        
        if attempt < max_attempts {
            println!("SPV proof not ready, waiting {} seconds...", interval_seconds);
            thread::sleep(Duration::from_secs(interval_seconds));
        }
    }
    
    println!("⚠️  SPV proof polling timeout after {} attempts", max_attempts);
    json!({})
}