allow torrents to keep running when they encounter an error (such as disk full) but still report the error in the torrent's error string

src/peer_connection.cpp

@@ -1149,9 +1149,8 @@ namespace libtorrent
 			return;
 		}
 
-		if ((t->is_paused() && (!t->is_auto_managed()
+		if (t->is_paused() && (!t->is_auto_managed()
 			|| !m_ses.m_settings.incoming_starts_queued_torrents))
-			|| t->has_error())
 		{
 			// paused torrents will not accept
 			// incoming connections unless they are auto managed

src/session_impl.cpp

@@ -2677,7 +2677,7 @@ namespace aux {
 		{
 			torrent& t = *i->second;
 			TORRENT_ASSERT(!t.is_aborted());
-			if (t.statistics().upload_rate() > t.upload_limit() * 9 / 10)
+			if (t.statistics().upload_rate() * 11 / 10 > t.upload_limit())
 				++congested_torrents;
 			else
 				++uncongested_torrents;

src/torrent.cpp

@@ -1054,6 +1054,9 @@ namespace libtorrent
 		if (alerts().should_post<file_error_alert>())
 			alerts().post_alert(file_error_alert(j.error_file, get_handle(), j.error));
 
+		// put the torrent in an error-state
+		set_error(j.error, j.error_file);
+
 		if (j.action == disk_io_job::write)
 		{
 			// if we failed to write, stop downloading and just
@@ -1067,8 +1070,7 @@ namespace libtorrent
 			return;
 		}
 
-		// put the torrent in an error-state
-		set_error(j.error, j.error_file);
+		// if the error appears to be more serious than a full disk, just pause the torrent
 		pause();
 	}