/// <summary>
/// 计算长度
/// </summary>
/// <returns></returns>
public override long ComputeLength()
{
if (ContentType == ContentType.FormData)
{
if (string.IsNullOrEmpty(RequestBoundary))
{
RequestBoundary = "ifish_network_client_" + Guid.NewGuid().ToString().Replace("-", "");
}
var boundary = RequestBoundary;
WebRequset.ContentType = "multipart/form-data; boundary=" + boundary;
var size = ProcessedData.Where(s => s.Value != null).Select(
s =>
(long)2 //--
+ boundary.Length //boundary
+ 2 //\r\n
+ 43 // content-disposition
+ s.Key.Length //key
+ Message.Encoding.GetByteCount(s.Value) //value
+ 2 //\r\n
).Sum();
//attach file
size += PostedFile.Sum(s =>
{
s.AttachContext(Context);
return(s.ComputeLength());
});
size += 4 + boundary.Length; //结束标记
return(size);
}
else
{
if (ContentType == ContentType.FormUrlEncoded)
{
return(SerializedDataString.Length);
}
else
{
return(Math.Max(0, ProcessedData.Select(s => s.Key.Length + 1 + (s.Value == null ? 0 : (ContentType == ContentType.FormUrlEncoded ? s.Value.Length : Message.Encoding.GetByteCount(s.Value)))).Sum() + ProcessedData.Count - 1));
}
}
}
/// <summary>
/// 异步将数据写入当前的请求流中
/// </summary>
/// <param name="asyncData"></param>
public override void WriteToAsync(AsyncStreamProcessData asyncData)
{
base.WriteToAsync(asyncData);
//异步写入的时候，如果没有文件，则一次性写入
if (ContentType == ContentType.FormUrlEncoded)
{
asyncData.AsyncStreamWrite((ContentType == ContentType.FormUrlEncoded ? System.Text.Encoding.ASCII : Message.Encoding).GetBytes(ProcessedData.Where(s => s.Value != null).Select(s => s.Key + "=" + s.Value).Join("&")), false, null);
return;
}
//否则先写入普通数据，再写入文件。
byte[] textBuffer = null;
using (var ms = new MemoryStream())
{
//写入普通区域
foreach (var v in ProcessedData)
{
if (v.Value == null)
{
continue;
}
var str = "--" + RequestBoundary + "\r\nContent-Disposition: form-data; name=\"" + v.Key + "\"\r\n\r\n";
ms.Write(Message.Encoding.GetBytes(str));
if (!v.Value.IsNullOrEmpty())
{
ms.Write(Message.Encoding.GetBytes(v.Value));
}
ms.Write(Message.Encoding.GetBytes("\r\n"));
}
ms.Close();
textBuffer = ms.ToArray();
}
asyncData.AsyncStreamWrite(textBuffer, true, _ =>
{
_currentAsyncFileIndex = 0;
if (AsyncData.Exception != null)
{
return;
}
WriteFileAsync();
});
}
/// <summary>
/// 写入内容到流中
/// </summary>
/// <param name="stream"></param>
public override void WriteTo(Stream stream)
{
if (PostedFile.Count > 0 || ContentType == ContentType.FormData)
{
//写入普通区域
foreach (var v in ProcessedData)
{
if (v.Value == null)
{
continue;
}
var str = "--" + RequestBoundary + "\r\nContent-Disposition: form-data; name=\"" + v.Key + "\"\r\n\r\n";
stream.Write(Context.Request.Encoding.GetBytes(str));
if (!v.Value.IsNullOrEmpty())
{
stream.Write(Context.Request.Encoding.GetBytes(v.Value));
}
stream.Write(Context.Request.Encoding.GetBytes("\r\n"));
}
//写入文件
PostedFile.ForEach(s => s.WriteTo(stream));
var endingstr = "--" + RequestBoundary + "--";
stream.Write(Context.Request.Encoding.GetBytes(endingstr));
}
else
{
stream.Write((ContentType == ContentType.FormUrlEncoded ? System.Text.Encoding.ASCII : Message.Encoding).GetBytes(ProcessedData.Where(s => s.Value != null).Select(s => s.Key + "=" + s.Value).Join("&")));
}
}