private void DeserializeContents(Stream serializationStream, Package package, int count)
{
var bufferManager = this.BufferManager;
if (bufferManager == null)
{
throw new InvalidOperationException("The value of BufferManager property is null.");
}
int headerCount;
byte[] temp = new byte[4];
for (int i = 0; i < count; i++)
{
PackageContent content = new PackageContent();
headerCount = serializationStream.ReadByte();
this.DeserializeHeaders(serializationStream, content.Headers, headerCount);
if (serializationStream.Read(temp, 0, 4) == 4)
{
int contentLength = BitConverter.ToInt32(temp, 0);
int id = bufferManager.Allocate(contentLength);
bufferManager.Write(id, serializationStream, contentLength);
content.ContentStream = bufferManager.GetStream(id);
}
package.Contents.Add(content);
}
}
private void SerializeContent(Stream serializationStream, PackageContent content)
{
var headers = content.Headers;
if (headers == null || headers.Count == 0)
{
serializationStream.WriteByte(0);
}
else
{
serializationStream.WriteByte((byte)headers.Count);
this.SerializeHeaders(serializationStream, headers);
}
if (content.ContentBuffer != null)
{
//写入内容数组的实际长度
serializationStream.Write(BitConverter.GetBytes(content.ContentLength), 0, 4);
//将内容数组全部写入序列化流
serializationStream.Write(content.ContentBuffer, 0, content.ContentLength);
}
else if (content.ContentStream != null)
{
var contentStream = content.ContentStream;
//写入内容流的实际长度
serializationStream.Write(BitConverter.GetBytes(content.ContentLength), 0, 4);
byte[] buffer = new byte[1024];
int bytesRead = 0;
int availableLength = content.ContentLength;
while (availableLength > 0 && (bytesRead = contentStream.Read(buffer, 0, Math.Min(buffer.Length, availableLength))) > 0)
{
serializationStream.Write(buffer, 0, bytesRead);
availableLength -= bytesRead;
}
}
}