//异步发超GET请求
public bool HttpGet(string Url, string Para, AsyncHttpCallBack ACB)
{
if (!string.IsNullOrEmpty(Para))
{
Url = Url + "?" + Para;
}
HttpWebRequest Req = WebRequest.Create(Url) as HttpWebRequest;
Req.Method = "Get";
Req.ServicePoint.Expect100Continue = false;
try
{
RequestState State = new RequestState();
State.ACBack = ACB;
State.Request = Req;
IAsyncResult result = (IAsyncResult)Req.BeginGetResponse(new AsyncCallback(ResponseCallback), State);
ThreadPool.RegisterWaitForSingleObject(result.AsyncWaitHandle, new WaitOrTimerCallback(TimeoutCallback), Req, DefaultTimeout, true);
WaitDone.WaitOne();
State.Response.Close();
}
catch (Exception ex)
{
return(false);
}
return(true);
}
//构造函数
public RequestState()
{
BufferRead = new byte[BUFFER_SIZE];
RequestData = new StringBuilder("");
Request = null;
StreamResponse = null;
ACBack = null;
}
//异步方式发起POST请求
public bool HttpPost(string Url, string Para, AsyncHttpCallBack ACB)
{
StreamWriter Write = null;
HttpWebRequest WebReq = WebRequest.Create(Url) as HttpWebRequest;
WebReq.Method = "POST";
WebReq.ContentType = "application/x-www-form-urlencoded";
WebReq.ServicePoint.Expect100Continue = false;
try
{
Write = new StreamWriter(WebReq.GetRequestStream());
Write.Write(Para);
Write.Close();
Write = null;
RequestState State = new RequestState();
State.ACBack = ACB;
State.Request = WebReq;
IAsyncResult Result = (IAsyncResult)WebReq.BeginGetResponse(new AsyncCallback(ResponseCallback), State);
ThreadPool.RegisterWaitForSingleObject(Result.AsyncWaitHandle, new WaitOrTimerCallback(TimeoutCallback), WebReq, DefaultTimeout, true);
WaitDone.WaitOne();
State.Response.Close();
}
catch (Exception ex)
{
if (Write != null)
{
Write.Close();
Write = null;
}
return(false);
}
finally
{
if (Write != null)
{
Write.Close();
Write = null;
}
}
return(true);
}
public bool HttpPostFile(string Url, string Para, List <Parameter> Files, AsyncHttpCallBack AsyncCB)
{
Stream ReqStream = null;
string Boundary = DateTime.Now.Ticks.ToString("x");
Url = Url + "?" + Para;
HttpWebRequest WebReq = WebRequest.Create(Url) as HttpWebRequest;
WebReq.Method = "POST";
WebReq.ServicePoint.Expect100Continue = true;
WebReq.ContentType = "multipart/form-data; boundary=" + Boundary;
WebReq.KeepAlive = true;
WebReq.Credentials = CredentialCache.DefaultCredentials;
try
{
Stream MulStream = new MemoryStream();
byte[] BoundaryByte = Encoding.ASCII.GetBytes("\r\n--" + Boundary + "\r\n");
string FormdataTem = "\r\n--" + Boundary + "\r\nContent-Disposition:form-data:name=\"{0}\"\r\n\r\n{1}";
List <Parameter> ListParm = HttpUtility.GetQueryParameters(Para);
foreach (Parameter P in ListParm)
{
string FormItem = string.Format(FormdataTem, P.Name, (FormParamDecode(P.Value)));
byte[] FormItemByte = Encoding.UTF8.GetBytes(FormItem);
MulStream.Write(FormItemByte, 0, FormItemByte.Length);
}
MulStream.Write(BoundaryByte, 0, BoundaryByte.Length);
string HeaderTemp = "Content-Disposition:form-data:name=\"{0}\";filename=\"{1}\"\r\nContent-Type: \"{2}\"\r\n\r\n";
foreach (Open.MingdaoSDK.Common.Parameter Pa in Files)
{
string Name = Pa.Name;
string FilePath = Pa.Value;
string File = Path.GetFileName(FilePath);
string ContentType = HttpUtility.GetContentType(File);
string Header = string.Format(HeaderTemp, Name, File, ContentType);
byte[] HeaderBytes = Encoding.UTF8.GetBytes(Header);
MulStream.Write(HeaderBytes, 0, HeaderBytes.Length);
FileStream FileStr = new FileStream(FilePath, FileMode.Open, FileAccess.Read);
byte[] Buffer = new byte[1024];
int byteRead = 0;
while ((byteRead = FileStr.Read(Buffer, 0, Buffer.Length)) != 0)
{
MulStream.Write(Buffer, 0, byteRead);
}
MulStream.Write(BoundaryByte, 0, BoundaryByte.Length);
FileStr.Close();
}
WebReq.ContentLength = MulStream.Length;
ReqStream = WebReq.GetRequestStream();
MulStream.Position = 0;
byte[] TmpBuffer = new byte[MulStream.Length];
MulStream.Read(TmpBuffer, 0, TmpBuffer.Length);
MulStream.Close();
ReqStream.Write(TmpBuffer, 0, TmpBuffer.Length);
ReqStream.Close();
ReqStream = null;
RequestState RState = new RequestState();
RState.ACBack = AsyncCB;
RState.Request = WebReq;
IAsyncResult Result = (IAsyncResult)WebReq.BeginGetResponse(new AsyncCallback(ResponseCallback), RState);
ThreadPool.RegisterWaitForSingleObject(Result.AsyncWaitHandle, new WaitOrTimerCallback(TimeoutCallback), WebReq, DefaultTimeout, true);
WaitDone.WaitOne();
RState.Response.Close();
}
catch (Exception ex)
{
if (ReqStream != null)
{
ReqStream.Close();
ReqStream.Dispose();
ReqStream = null;
}
return(false);
}
finally
{
if (ReqStream != null)
{
ReqStream.Close();
ReqStream.Dispose();
ReqStream = null;
}
}
return(true);
}
