From 4214189961d59b9de15e221a9c4b229c0d646e78 Mon Sep 17 00:00:00 2001
From: murilo ijanc
Date: Wed, 25 Mar 2026 22:19:39 -0300
Subject: Add automatic re-join and -v flag for verbose logging

When the routing table drops to zero peers, the daemon now
re-joins bootstrap nodes every 60s, unbanning their addresses
first so replies are not silently discarded.

Both tp and tpd accept -v for debug-level output without
needing RUST_LOG environment variable.
---
 src/daemon.rs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'src/daemon.rs')

diff --git a/src/daemon.rs b/src/daemon.rs
index 12757a3..4895a48 100644
--- a/src/daemon.rs
+++ b/src/daemon.rs
@@ -30,6 +30,9 @@ const REPUBLISH_INTERVAL: Duration = Duration::from_secs(1800);
 /// How often to persist routing table and state (5 min).
 const SAVE_INTERVAL: Duration = Duration::from_secs(300);
 
+/// How often to attempt re-join when the routing table is empty (60 s).
+const REJOIN_INTERVAL: Duration = Duration::from_secs(60);
+
 /// How often to sync DHT-replicated values to local store (5 s).
 const SYNC_INTERVAL: Duration = Duration::from_secs(5);
 
@@ -45,11 +48,13 @@ pub fn run_daemon(
     store: &PasteStore,
     rx: &mpsc::Receiver<DaemonRequest>,
     shutdown: &AtomicBool,
+    bootstrap: &[String],
 ) {
     let mut last_gc = Instant::now();
     let mut last_republish = Instant::now() - REPUBLISH_INTERVAL;
     let mut last_save = Instant::now();
     let mut last_sync = Instant::now();
+    let mut last_rejoin = Instant::now();
 
     log::info!("daemon main loop started");
 
@@ -65,6 +70,37 @@ pub fn run_daemon(
             }
         }
 
+        // Re-join bootstrap nodes when the routing table is empty
+        if node.routing_table_size() == 0
+            && !bootstrap.is_empty()
+            && last_rejoin.elapsed() >= REJOIN_INTERVAL
+        {
+            last_rejoin = Instant::now();
+            log::warn!("routing table empty, re-joining bootstrap nodes");
+            for peer in bootstrap {
+                let parts: Vec<&str> = peer.rsplitn(2, ':').collect();
+                if parts.len() != 2 {
+                    continue;
+                }
+                let host = parts[1];
+                if let Ok(p) = parts[0].parse::<u16>() {
+                    // Unban bootstrap addresses before re-joining
+                    // so their replies are not silently dropped.
+                    use std::net::ToSocketAddrs;
+                    if let Ok(addrs) = format!("{host}:{p}").to_socket_addrs() {
+                        for addr in addrs {
+                            node.unban(&addr);
+                        }
+                    }
+                    if let Err(e) = node.join(host, p) {
+                        log::warn!("rejoin: failed to join {peer}: {e}");
+                    } else {
+                        log::info!("rejoin: sent join to {peer}");
+                    }
+                }
+            }
+        }
+
         if last_sync.elapsed() >= SYNC_INTERVAL {
             last_sync = Instant::now();
             sync_dht_to_store(node, store);
-- 
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