WCF直接通过绑定进行通信不成功，求助各位大虾
初学WCF。晚上按书练习直接绑定进行通信内容时不成功，没找到原因，请教名位大虾。。。
始终报：TCP error code 10061: 由于目标机器积极拒绝，无法连接。 127.0.0.1:80.
防火墙已经关掉了。问题依旧.泪奔。。。。
代码如下：
lister工程：

namespace Lister
{
class Program
{
static void Main(string[] args)
{
Uri lister = new Uri("http://127.0.0.1:9999/lister");
Binding binding = new BasicHttpBinding();
IChannelListener<IReplyChannel> channelListener = binding.BuildChannelListener<IReplyChannel>(lister);
channelListener.Open();

IReplyChannel channel = channelListener.AcceptChannel(TimeSpan.MaxValue);

channel.Open();
Console.WriteLine("start lister...");

while (true)
{
try
{
RequestContext request = channel.ReceiveRequest(TimeSpan.MaxValue);
Console.WriteLine("接收到请求消息:\n{0}", request.RequestMessage);

request.Reply(CreateReplyMessage(binding));
}
catch (Exception ex)
{

}
}
}

static Message CreateReplyMessage(Binding binding)
{
String action = "urn:artech.com/reply";
String body = "this is a simple message for reply";

return Message.CreateMessage(binding.MessageVersion, action, body);
}
}
}

Sender工程:
namespace Sender
{
class Program
{
static void Main(string[] args)
{
Uri uri = new Uri("http://127.0.0.1/9999/lister");
Binding binding = new BasicHttpBinding();

IChannelFactory<IRequestChannel> channelFactory = binding.BuildChannelFactory<IRequestChannel>();

channelFactory.Open();

IRequestChannel channel = channelFactory.CreateChannel(new EndpointAddress(uri));
channel.Open();

Message replyMessage = channel.Request(CreateRequestMessage(binding));

Console.WriteLine("接收到回复消息;\n{0}",replyMessage);

Console.ReadLine();

}

static Message CreateRequestMessage(Binding binding)
{
string action = "urn:artech.com/request";
string body = "this is a simple request messsage";

return Message.CreateMessage(binding.MessageVersion, action, body);
}
}
}
跪求各位大虾支支招。谢谢。

[解决办法]
你把 ： 号 打成 / 号了。