public async virtual Task <byte[]> GetResponseAsync()
{
if (Connection == null)
{
Connection = ConnectionManager.GetTrackerConnection();
}
Connection.Open();
try
{
NetworkStream stream = Connection.GetStream();
byte[] headerBuffer = Header.ToByte();
await stream.WriteAsync(headerBuffer, 0, headerBuffer.Length);
await stream.WriteAsync(Body, 0, Body.Length);
var header = new FDFSHeader(stream);
if (header.Status != 0)
{
throw new FDFSException(string.Format("Get Response Error,Error Code:{0}", header.Status));
}
int count = (int)header.Length;
byte[] body = new byte[count];
var offset = 0;
while (count > 0)
{
var readCount = await stream.ReadAsync(body, offset, count);
if (readCount <= 0)
{
throw new FDFSException("Get Response Error,readCount <= 0");
}
offset += readCount;
count -= readCount;
}
Connection.Close();
return(body);
}
catch (Exception ex)
{
Connection.Release();
throw ex;
//throw ex;//可以看Storage节点的log看
//22 -〉下载字节数超过文件长度 invalid download file bytes: 10 > file remain bytes: 4
// -> 或者 pkg length is not correct
//2 -〉没有此文件 error info: No such file or directory.
}
}
public void ReleaseConnection(Connection conn)
{
if (!conn.InUse)
{
try
{
FDFSHeader header = new FDFSHeader(0, Consts.FDFS_PROTO_CMD_QUIT, 0);
byte[] buffer = header.ToByte();
conn.GetStream().Write(buffer, 0, buffer.Length);
conn.GetStream().Close();
}
catch
{
}
}
conn.Close();
lock ((_inUse as ICollection).SyncRoot)
{
_inUse.Remove(conn);
}
_autoEvent.Set();
}