进行WCF服务终结点配置的过程中，当你配置服务终结点端口，启动服务程序的时候会遇到如下错误，服务无法启动，1.错误信息如下：
IP终结点（端口） 0.0.0.0:8002已经存在一个侦听器，请确保程序中没有多次使用一个终结点，或别的程序没有监听此终结点（端口）
There is already a listener on IP endpoint 0.0.0.0:8002. Make sure that you are not trying to use this endpoint multiple times in your application and that there are no other applications listening on this endpoint.
2.原因：此端口已经被使用，即已经有程序在使用一个相同的端口所致。必须我们配置两个服务终结点使用一个终结点端口
<
endpoint
address = " http://localhost:8002/WCFService "
binding = " wsHttpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
< endpoint
address = " net.tcp://localhost:8002/WCFService "
binding = " netTcpBinding " bindingName = " netTcpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
address = " http://localhost:8002/WCFService "
binding = " wsHttpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
< endpoint
address = " net.tcp://localhost:8002/WCFService "
binding = " netTcpBinding " bindingName = " netTcpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
运行服务程序就会出现错误。
3.解决办法：
（1）检查机器的端口，确保此端口不是系统服务端口，或者没被其他程序使用。
（2）检查服务终结点配置信息，确保两个不同的服务使用不同的终结点端口
此例中的修改代码改为端口8001即可：
<
endpoint
address = " http://localhost:8001/WCFService "
binding = " wsHttpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
address = " http://localhost:8001/WCFService "
binding = " wsHttpBinding "
contract = " WCFService.IWCFService " >
</ endpoint >
本文转自 frankxulei 51CTO博客，原文链接：http://blog.51cto.com/frankxulei/320431，如需转载请自行联系原作者
