[英]Connecting to a node.js server from C#
I'm trying to write a simple server that .NET clients can connect to to exchange messages. 我正在尝试编写一个.NET客户端可以连接到的简单服务器来交换消息。 Any message from any client will go to all of the others.
来自任何客户的任何消息都将发送给所有其他客户。 node.js + socket.io seems like a good way to go here, but I'm having trouble.
node.js + socket.io似乎是一个很好的方式去这里,但我遇到了麻烦。 I'm using sample code from the socket.io site, and when I connect to it from a browser, the console traces out all the connection and heartbeat events as it should, so I think I've at least got the environment setup correctly.
我正在使用来自socket.io站点的示例代码,当我从浏览器连接到它时,控制台会按原样跟踪所有连接和心跳事件,因此我认为我至少已正确设置了环境。
My client code (pasted below) is very similar to the example code for the Socket class, but it's behaving strangely. 我的客户端代码(粘贴在下面)与Socket类的示例代码非常相似,但它表现得很奇怪。 In the "ProcessConnect" handler, e.LastOperation == "Connect", and e.SocketError == "Success", but the connection event handler on the server side is not firing.
在“ProcessConnect”处理程序中,e.LastOperation ==“Connect”和e.SocketError ==“Success”,但服务器端的连接事件处理程序未触发。 Also weird is that when the code sends "Hello World", the receive handler also gets fired with "Hello World" coming back.
同样奇怪的是,当代码发送“Hello World”时,接收处理程序也会因“Hello World”回来而被解雇。 I know this isn't coming from the server because there's no code on the server to do this.
我知道这不是来自服务器,因为服务器上没有代码可以执行此操作。 I thought maybe the socket was connecting to itself or something, but if I shut the server down, the connection fails.
我想也许套接字连接到自身或其他东西,但如果我关闭服务器,连接失败。
Clearly there's something basic I'm missing about .NET sockets, but I'm not sure what it is. 显然,我缺少一些关于.NET套接字的基本内容,但我不确定它是什么。
Client: 客户:
public class NodeClient
{
Socket _Socket;
public NodeClient()
{
SocketAsyncEventArgs socketState = new SocketAsyncEventArgs();
socketState.Completed += SocketState_Completed;
socketState.RemoteEndPoint = new DnsEndPoint("localhost", 81);
_Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_Socket.ConnectAsync(socketState);
}
private void SocketState_Completed(object sender, SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success)
{
throw new SocketException((int)e.SocketError);
}
switch (e.LastOperation)
{
case SocketAsyncOperation.Connect:
ProcessConnect(e);
break;
case SocketAsyncOperation.Receive:
ProcessReceive(e);
break;
case SocketAsyncOperation.Send:
ProcessSend(e);
break;
default:
throw new Exception("Invalid operation completed.");
}
}
// Called when a ConnectAsync operation completes
private void ProcessConnect(SocketAsyncEventArgs e)
{
byte[] buffer = Encoding.UTF8.GetBytes("Hello World");
e.SetBuffer(buffer, 0, buffer.Length);
bool willRaiseEvent = _Socket.SendAsync(e);
if (!willRaiseEvent)
{
ProcessSend(e);
}
}
// Called when a ReceiveAsync operation completes
private void ProcessReceive(SocketAsyncEventArgs e)
{
string message = Encoding.UTF8.GetString(e.Buffer, 0, e.Buffer.Length);
}
// Called when a SendAsync operation completes
private void ProcessSend(SocketAsyncEventArgs e)
{
bool willRaiseEvent = _Socket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);
}
}
}
Server: 服务器:
var io = require('socket.io').listen(81);
io.sockets.on('connection', function (socket) {
console.log('connected yo');
});
You could try handle this using your own socket code. 您可以尝试使用自己的套接字代码来处理它。 I would recommend that you use a library like SocketIO4Net to handle the integration with .Net
我建议您使用像SocketIO4Net这样的库来处理与.Net的集成
SocketIO4Net - http://socketio4net.codeplex.com SocketIO4Net - http://socketio4net.codeplex.com
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