由于网络安全的需要，某些数据会避开某些路由，例如美国的一些情报的传输就要避开伊拉克地方的路由，而根据某些需要，用户又要指定数据包一定要经过的路由，结合这两点，给出个人认为实际中可能用到的最短路径算法。-Because of network security required, certain data will avoid certain routing, such as the United States some of the transmission of information is necessary to place the routing to avoid Iraq, and according to certain required, the user must also specify the packet to go through the routing, combining these two points, give the individual may consider the actual use of the shortest path algorithm.