监控HTTP(1)

在配置IHttpModule的实现类可以通过:

HttpRequest:

得到HTTP请求的正文信息: 

request.InputStream.Position = 0;//设置流的位置
  StreamReader reader = new StreamReader(request.InputStream);//request请求流
  string aa = reader.ReadToEnd();
  request.InputStream.Seek(0, SeekOrigin.End);//还原到原来的位置

得到请求的头部信息:

 HttpRequest request = m_application.Context.Request;

string head = string.Empty;
for (int i = 0; i < request.Headers.Count; i++)
       {
           head += request.Headers.GetKey(i) + ":" + request.Headers[i]+"\n";
     }

HttpResponse的response.OutputStream流不能读只能写,但其提供了一个过滤器要使用前需要声明:

  HttpApplication application = sender as HttpApplication;
            string[] temp = application.Request.CurrentExecutionFilePath.Split('.');//虚拟路径
            if (temp.Length > 0)
            {
                application.Response.Filter = new RawFilter(application.Response.Filter);
                RawFilter filter = (RawFilter)application.Response.Filter;
                filter.OnRawDataRecordedEvent += new EventHandler(filter_OnRawDataRecordedEvent);
            }

  public class RawDataEventArgs : EventArgs
    {
        private string sourceCode;
        public RawDataEventArgs(string SourceCode)
        {
            this.sourceCode = SourceCode;
        }

        public string SourceCode
        {
            get { return sourceCode; }
            set { sourceCode = value; }
        }
    }

    //自定义过滤器
    public class RawFilter : Stream
    {
        Stream responseStream;
        long position;
        StringBuilder responseHtml;

        /*当原始数据采集成功后激发*/
        public event EventHandler OnRawDataRecordedEvent;

        public RawFilter(Stream inputStream)
        {
            responseStream = inputStream;
            responseHtml = new StringBuilder();
        }
        public override bool CanRead
        {
            get { return true; }
        }

        public override bool CanSeek
        {
            get { return true; }
        }

        public override bool CanWrite
        {
            get { return true; }
        }

        public override void Flush()
        {
            responseStream.Flush();
        }

        public override long Length
        {
            get { return 0; }
        }

        public override long Position
        {
            get
            {
                return position;
            }
            set
            {
                position = value;
            }
        }

        public override int Read(byte[] buffer, int offset, int count)
        {
            return responseStream.Read(buffer, offset, count);
        }

        public override long Seek(long offset, SeekOrigin origin)
        {
            return responseStream.Seek(offset, origin);
        }

        public override void SetLength(long value)
        {
            responseStream.SetLength(value);
        }
        /*关键的点，在HttpResponse 输入内容的时候，一定会调用此方法输入数据，所以要在此方法内截获数据，经测试能获取webservice时的xml*/
        public override void Write(byte[] buffer, int offset, int count)
        {
            string aa = System.Text.UTF8Encoding.UTF8.GetString(buffer);

            responseStream.Write(buffer, offset, count);
        }
    }