X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=38308bb8c434ff2259779dec267d41c7839e1b81;hb=f5b929834a996eac8b9138687be2283466b80655;hp=1815d4a350cc0289100d207b9fa2a98029397b1d;hpb=64bf483c9541f36f4e25dc86304ef278b2011a69;p=rust-lightning

diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs
index 1815d4a3..38308bb8 100644
--- a/lightning/src/ln/peer_handler.rs
+++ b/lightning/src/ln/peer_handler.rs
@@ -285,6 +285,10 @@ enum InitSyncTracker{
 	NodesSyncing(PublicKey),
 }
 
+/// The ratio between buffer sizes at which we stop sending initial sync messages vs when we stop
+/// forwarding gossip messages to peers altogether.
+const FORWARD_INIT_SYNC_BUFFER_LIMIT_RATIO: usize = 2;
+
 /// When the outbound buffer has this many messages, we'll stop reading bytes from the peer until
 /// we have fewer than this many messages in the outbound buffer again.
 /// We also use this as the target number of outbound gossip messages to keep in the write buffer,
@@ -292,7 +296,7 @@ enum InitSyncTracker{
 const OUTBOUND_BUFFER_LIMIT_READ_PAUSE: usize = 10;
 /// When the outbound buffer has this many messages, we'll simply skip relaying gossip messages to
 /// the peer.
-const OUTBOUND_BUFFER_LIMIT_DROP_GOSSIP: usize = 20;
+const OUTBOUND_BUFFER_LIMIT_DROP_GOSSIP: usize = OUTBOUND_BUFFER_LIMIT_READ_PAUSE * FORWARD_INIT_SYNC_BUFFER_LIMIT_RATIO;
 
 struct Peer {
 	channel_encryptor: PeerChannelEncryptor,
@@ -1431,6 +1435,23 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, L: Deref, CMH: Deref> P
 		}
 	}
 
+	/// Disconnects all currently-connected peers. This is useful on platforms where there may be
+	/// an indication that TCP sockets have stalled even if we weren't around to time them out
+	/// using regular ping/pongs.
+	pub fn disconnect_all_peers(&self) {
+		let mut peers_lock = self.peers.lock().unwrap();
+		let peers = &mut *peers_lock;
+		for (mut descriptor, peer) in peers.peers.drain() {
+			if let Some(node_id) = peer.their_node_id {
+				log_trace!(self.logger, "Disconnecting peer with id {} due to client request to disconnect all peers", node_id);
+				peers.node_id_to_descriptor.remove(&node_id);
+				self.message_handler.chan_handler.peer_disconnected(&node_id, false);
+			}
+			descriptor.disconnect_socket();
+		}
+		debug_assert!(peers.node_id_to_descriptor.is_empty());
+	}
+
 	/// Send pings to each peer and disconnect those which did not respond to the last round of
 	/// pings.
 	///