[英]Win7 service with HTTPListener stops responding after one request
I'm a novice c# developer - trying to write a simple win7 service. 我是一位C#新手开发人员-试图编写一个简单的win7服务。
The service should start HTTPListener and listen for incoming browser requests, when a request is received it returns a response and continue to listen for additional requests. 该服务应启动HTTPListener并侦听传入的浏览器请求,当收到请求时,它将返回响应并继续侦听其他请求。 I don't need to deal with parallelism since there would be no more than one request at a time (and very short).
我不需要处理并行性,因为一次最多只能有一个请求(而且很短)。
I used the following code, but after the first response the service stops responding. 我使用了以下代码,但是在第一个响应之后,服务停止响应。 I may need a loop somewhere but I am not familiar with the API so I may also be wrong with what I'm doing.
我可能需要在某个地方循环,但我对API并不熟悉,所以我做的事情也可能错了。
Thank you for your help. 谢谢您的帮助。
protected override void OnStart(string[] args)
{
HttpListener listener = new HttpListener();
listener.Prefixes.Add("http://localhost:9999/");
listener.Start();
listener.BeginGetContext(new AsyncCallback(OnRequestReceive), listener);
}
private void OnRequestReceive(IAsyncResult result)
{
HttpListener listener = (HttpListener)result.AsyncState;
HttpListenerContext context = listener.EndGetContext(result);
HttpListenerResponse response = context.Response;
byte[] buff = {1,2,3};
response.Close(buff, true);
}
You're almost there! 你快到了! After receiving one request, you need to start listening for another one.
收到一个请求后,您需要开始侦听另一个请求。
private void OnRequestReceive(IAsyncResult result)
{
HttpListener listener = (HttpListener)result.AsyncState;
HttpListenerContext context = listener.EndGetContext(result);
HttpListenerResponse response = context.Response;
byte[] buff = {1,2,3};
response.Close(buff, true);
// ---> start listening for another request
listener.BeginGetContext(new AsyncCallback(OnRequestReceive), listener);
}
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