From 74915af509e4a6b215aebe5f53fde53c5e646df7 Mon Sep 17 00:00:00 2001
From: Maciek Borzecki <maciek.borzecki@gmail.com>
Date: Sat, 14 Oct 2017 19:13:05 +0200
Subject: [PATCH] share, transfer-manager: handle a case when all ports are
 busy

---
 src/mconnect/share.vala            | 4 ++++
 src/mconnect/transfer-manager.vala | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/mconnect/share.vala b/src/mconnect/share.vala
index af5181b..35acf49 100644
--- a/src/mconnect/share.vala
+++ b/src/mconnect/share.vala
@@ -193,6 +193,10 @@ class ShareHandler : Object, PacketHandlerInterface {
 
 		uint16 port;
 		var listener = Core.instance().transfer_manager.make_listener(out port);
+		if (listener == null) {
+			warning("coult not allodate a listener");
+			return;
+		}
 		debug("allocated listener on port %u", port);
 
 		var t = new UploadTransfer(dev, listener, input, size);
diff --git a/src/mconnect/transfer-manager.vala b/src/mconnect/transfer-manager.vala
index 9d8999c..48101a6 100644
--- a/src/mconnect/transfer-manager.vala
+++ b/src/mconnect/transfer-manager.vala
@@ -32,7 +32,7 @@ class TransferManager : Object {
 		new_transfer(job);
 	}
 
-	public SocketService make_listener(out uint16 listen_port) {
+	public SocketService? make_listener(out uint16 listen_port) {
 		var ss = new SocketService();
 		for (var port = PORT_MIN; port <= PORT_MAX; port++) {
 			var added = false;
@@ -49,6 +49,7 @@ class TransferManager : Object {
 				return ss;
 			}
 		}
+		ss.close();
 		warning("could not find a free port to listen on");
 		return null;
 	}