1 files changed, 30 insertions, 28 deletions

diff --git a/src/receive.c b/src/receive.c
index 19b450a..42dbe5a 100644
--- a/src/receive.c
+++ b/src/receive.c
@@ -76,6 +76,33 @@ static inline void handle_socket_control(struct msghdr *message, const fastd_soc
 	}
 }
 
+static bool backoff_unknown(fastd_context_t *ctx, const fastd_peer_address_t *addr) {
+	size_t i;
+	for (i = 0; i < array_size(ctx->unknown_handshakes); i++) {
+		const fastd_handshake_timeout_t *t = &ctx->unknown_handshakes[(ctx->unknown_handshake_pos + i) % array_size(ctx->unknown_handshakes)];
+
+		if (fastd_timed_out(ctx, &t->timeout))
+			break;
+
+		if (fastd_peer_address_equal(addr, &t->address)) {
+			pr_debug2(ctx, "sent a handshake to unknown address %I a short time ago, not sending again", addr);
+			return true;
+		}
+	}
+
+	if (ctx->unknown_handshake_pos == 0)
+		ctx->unknown_handshake_pos = array_size(ctx->unknown_handshakes)-1;
+	else
+		ctx->unknown_handshake_pos--;
+
+	fastd_handshake_timeout_t *t = &ctx->unknown_handshakes[ctx->unknown_handshake_pos];
+
+	t->address = *addr;
+	t->timeout = fastd_in_seconds(ctx, ctx->conf->min_handshake_interval);
+
+	return false;
+}
+
 static inline void handle_socket_receive_known(fastd_context_t *ctx, fastd_socket_t *sock, const fastd_peer_address_t *local_addr, const fastd_peer_address_t *remote_addr, fastd_peer_t *peer, fastd_buffer_t buffer) {
 	if (!fastd_peer_may_connect(ctx, peer)) {
 		fastd_buffer_free(buffer);
@@ -89,7 +116,9 @@ static inline void handle_socket_receive_known(fastd_context_t *ctx, fastd_socke
 	case PACKET_DATA:
 		if (!fastd_peer_is_established(peer) || !fastd_peer_address_equal(&peer->local_address, local_addr)) {
 			fastd_buffer_free(buffer);
-			ctx->conf->protocol->handshake_init(ctx, sock, local_addr, remote_addr, NULL);
+
+			if (!backoff_unknown(ctx, remote_addr))
+				ctx->conf->protocol->handshake_init(ctx, sock, local_addr, remote_addr, NULL);
 			return;
 		}
 
@@ -105,33 +134,6 @@ static inline bool allow_unknown_peers(fastd_context_t *ctx) {
 	return ctx->conf->has_floating || ctx->conf->on_verify;
 }
 
-static inline bool backoff_unknown(fastd_context_t *ctx, const fastd_peer_address_t *addr) {
-	size_t i;
-	for (i = 0; i < array_size(ctx->unknown_handshakes); i++) {
-		const fastd_handshake_timeout_t *t = &ctx->unknown_handshakes[(ctx->unknown_handshake_pos + i) % array_size(ctx->unknown_handshakes)];
-
-		if (fastd_timed_out(ctx, &t->timeout))
-			break;
-
-		if (fastd_peer_address_equal(addr, &t->address)) {
-			pr_debug2(ctx, "sent a handshake to unknown address %I a short time ago, not sending again", addr);
-			return true;
-		}
-	}
-
-	if (ctx->unknown_handshake_pos == 0)
-		ctx->unknown_handshake_pos = array_size(ctx->unknown_handshakes)-1;
-	else
-		ctx->unknown_handshake_pos--;
-
-	fastd_handshake_timeout_t *t = &ctx->unknown_handshakes[ctx->unknown_handshake_pos];
-
-	t->address = *addr;
-	t->timeout = fastd_in_seconds(ctx, ctx->conf->min_handshake_interval);
-
-	return false;
-}
-
 static inline void handle_socket_receive_unknown(fastd_context_t *ctx, fastd_socket_t *sock, const fastd_peer_address_t *local_addr, const fastd_peer_address_t *remote_addr, fastd_buffer_t buffer) {
 	const uint8_t *packet_type = buffer.data;
 	fastd_buffer_push_head(ctx, &buffer, 1);