private void ReadCallBack(IAsyncResult asyncResult)
{
if (this.IsCancled)
{
this.ReleaseSource();
return;
}
try
{
RequestState _myRequestState = (RequestState)asyncResult.AsyncState;
Stream responseStream = _myRequestState.streamResponse;
int read = responseStream.EndRead(asyncResult);
// Read the HTML page and then print it to the console.
if (read > 0)
{
//string contentType = myRequestState.response.ContentType;
//string encodeName = contentType.Substring(contentType.IndexOf("charset") + 8);
//Encoding ecd = Encoding.GetEncoding(encodeName);
//myRequestState.requestData.Append(ecd.GetString(myRequestState.BufferRead, 0, read));
_myRequestState.requestData.Append(Encoding.UTF8.GetString(_myRequestState.BufferRead, 0, read));
IAsyncResult asynchronousResult = responseStream.BeginRead(_myRequestState.BufferRead, 0, BUFFER_SIZE, new AsyncCallback(ReadCallBack), _myRequestState);
return;
}
else
{
// 数据从网络上读取完毕,此时需要完成两个工作：
// 1. 检查数据中是否有自定义的异常信息
// 2.如果没有异常信息，调用完成事件
string str = _myRequestState.requestData.ToString();
if (myErrorParser != null)
{
if (myErrorParser.HasError(str))
{
HttpException he = new HttpException();
he.Message = myErrorParser.GetErrorMessage(str);
this.RaiseException(he);
//if (this.AcceptException != null)
// this.AcceptException(he);
}
else
{
this.RaiseEvents();
}
}
else
{
//this.myRequestState = _myRequestState;
RaiseEvents(_myRequestState);
}
}
}
#region 异常处理
catch (Exception e)
{
Debug.WriteLine(
string.Format("HttpWebConnect.ReadCallBack -> error = {0}"
, e.Message));
this.RaiseException(e);
//if (this.AcceptException != null)
//{
// HttpException he = new HttpException();
// he.Message = e.Message;
// this.AcceptException(he);
//}
}
#endregion
ReleaseSource();
}
public HttpWebConnect()
{
myRequestState = new RequestState();
}
public HttpWebConnect()
{
myRequestState = new RequestState();
}
private void RequestStreamCallBack(IAsyncResult asynchronousResult)
{
try
{
myRequestState = (RequestState)asynchronousResult.AsyncState;
HttpWebRequest myrequest = myRequestState.request;
// End the operation.
Stream postStream = myrequest.EndGetRequestStream(asynchronousResult);
UTF8Encoding enc = new UTF8Encoding();
byte[] byteArray = enc.GetBytes(this.postData);
//myrequest.ContentLength = byteArray.Length;
// Write to the request stream.
postStream.Write(byteArray, 0, postData.Length);
postStream.Close();
myrequest.BeginGetResponse(new AsyncCallback(RespCallback), myRequestState);
}
catch (System.Exception ex)
{
this.RaiseException(ex);
}
}
