/// <summary>
/// 发送XmlTreeNode包
/// </summary>
/// <param name="ns"></param>
/// <param name="node"></param>
/// <returns></returns>
public static bool SendPackage(NetworkStream ns, AbstractXiepPackage xiepPackage)
{
if (ns == null || xiepPackage == null)
{
return(false);
}
lock (ns)
{
String responseNodeString = xiepPackage.ToXml();
try
{
Byte[] buffer = XiepIoHelper.getEncoding().GetBytes(responseNodeString);
//写数据包大小
Byte[] packageSizeBuffer = NumberHelper.intToByte(buffer.Length);
ns.Write(packageSizeBuffer, 0, packageSizeBuffer.Length);
//写数据包内容
ns.Write(buffer, 0, buffer.Length);
ns.Flush();
return(true);
}
catch
{
return(false);
}
}
}
public static String ReceiveXml(NetworkStream ns)
{
try
{
int packageSizeNumberBytesCount = 4;
byte[] packageSizeByteArray = new byte[packageSizeNumberBytesCount];
//读取包大小
while (true)
{
int readPackageSizeCount = ns.Read(packageSizeByteArray, 0, packageSizeNumberBytesCount);
if (readPackageSizeCount <= 0)
{
throw new IOException(String.Format("readPackageSizeCount为{0}！", readPackageSizeCount));
}
if (readPackageSizeCount != packageSizeNumberBytesCount)
{
Debug.Print("readPackageSizeCount:" + readPackageSizeCount);
continue;
}
break;
}
int packageSize = NumberHelper.bytesToInt(packageSizeByteArray);
if (packageSize <= 0)
{
throw new IOException("包大小不能为负数，已丢弃！", maxReceivePackageSize);
}
if (packageSize > maxReceivePackageSize)
{
throw new IOException(String.Format("包大小超过 {0}，已丢弃！", maxReceivePackageSize));
}
MemoryStream ms = new MemoryStream(packageSize);
//读取数据
IoHelper.CopyStream(ns, ms, Convert.ToInt64(packageSize));
ms.Position = 0;
return(XiepIoHelper.getEncoding().GetString(ms.ToArray()));
}
catch
{
return(null);
}
}