一般情况下我们用Remoting一个信道应该就够用了，因为程序要么是客户端，要么是服务器端。但是有时候也会出现一个客户端需要连接多个服务器端的情况，或者一个程序既作为服务器端(针对内网)，又作为客户端(针对外网)。这个时候就需要注册多个信道了。
根据一般的经验，客户端信道和服务器端信道应该是不冲突的。但实际的情况呢？看一下以下的代码：
IChannel serverChannel = new TcpServerChannel( 5000 );
ChannelServices.RegisterChannel( serverChannel, true );
ChannelServices.RegisterChannel( clientChannel );
ChannelServices.RegisterChannel( serverChannel, true );
IChannel clientChannel
= new TcpClientChannel();ChannelServices.RegisterChannel( clientChannel );
运行后会出现异常“信道
‘tcp’ 已注册。”(RemotingException)
注册两个客户端信道也一样会出现这个错误：
IChannel channel1 = new TcpClientChannel();
ChannelServices.RegisterChannel( channel1, true );
IChannel channel2 = new TcpClientChannel();
ChannelServices.RegisterChannel( channel2, true );
ChannelServices.RegisterChannel( channel1, true );
IChannel channel2 = new TcpClientChannel();
ChannelServices.RegisterChannel( channel2, true );
开始我怀疑是端口冲突，给每个信道分别设置不同的端口：
Hashtable props1 = new Hashtable();
props1[“port“] = 5001;
IChannel channel1 = new TcpClientChannel( props1, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel1, true );
Hashtable props2 = new Hashtable();
props2[“port“] = 5002;
IChannel channel2 = new TcpClientChannel( props2, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel2, true );
props1[“port“] = 5001;
IChannel channel1 = new TcpClientChannel( props1, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel1, true );
Hashtable props2 = new Hashtable();
props2[“port“] = 5002;
IChannel channel2 = new TcpClientChannel( props2, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel2, true );
错误依旧。想想也是，如果端口冲突，应该是这种错误：“通常每个套接字地址(协议/网络地址/端口)只允许使用一次。”(SocketException)
再分析一下原来的错误：“信道 ‘tcp’
已注册。”。难道是信道的名字冲突？
赶紧把channel的ChannelName打印出来看一下:
Console.WriteLine( “The Default
Channel Name is ” + (new TcpClientChannel()).ChannelName );
”The Default Channel Name is
tcp”…
问题找到。接下来要做的就是在注册不同信道的时候，显式指定其信道名称。ServerChannel和ClientChannel各有不同的方法，以下示例其一：
IChannel channel1 = new TcpClientChannel( “Channel1“, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel1, true );
IChannel channel2 = new TcpClientChannel( “Channel2“, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel2, true );
ChannelServices.RegisterChannel( channel1, true );
IChannel channel2 = new TcpClientChannel( “Channel2“, new BinaryClientFormatterSinkProvider() );
ChannelServices.RegisterChannel( channel2, true );
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