/// <summary>
/// 比较指定 <see cref="TcpLink" /> 对象是否与当前对象相同。
/// </summary>
/// <param name="obj">需要比较的对象。</param>
/// <returns>如果两个对象表示的连接相同返回 <see langword="true" />，否则返回<see langword="false" />。</returns>
public bool Equals(TcpLink obj)
{
if (obj is null)
{
return(false);
}
return(obj.SrcAddress.Equals(SrcAddress) &&
obj.SrcPort.Equals(SrcPort) &&
obj.DstAddress.Equals(DstAddress) &&
obj.DstPort.Equals(DstPort));
}
/// <summary>
/// 为 <see cref="TcpLink" /> 对象排序提供比较方法
/// </summary>
/// <param name="a">第一个排序对象</param>
/// <param name="b">第二个排序对象</param>
/// <returns>默认以IP地址及端口升序规则返回结果</returns>
public static int SortMethod(TcpLink a, TcpLink b)
{
int result;
// 比较源地址
var aBytes = a.SrcAddress.GetAddressBytes();
var bBytes = b.SrcAddress.GetAddressBytes();
try {
for (var i = 0; i < 4; i++)
{
if ((aBytes[i] & 0xFF) < (bBytes[i] & 0xFF))
{
return(-1);
}
if ((aBytes[i] & 0xFF) > (bBytes[i] & 0xFF))
{
return(1);
}
}
}
catch (Exception) {
result = string.CompareOrdinal(a.SrcAddress.ToString(), b.SrcAddress.ToString());
if (result != 0)
{
return(result);
}
}
// 比较源端口
if (a.SrcPort > b.SrcPort)
{
return(1);
}
if (a.SrcPort < b.SrcPort)
{
return(-1);
}
// 比较目标地址
aBytes = a.DstAddress.GetAddressBytes();
bBytes = b.DstAddress.GetAddressBytes();
try {
for (var i = 0; i < 4; i++)
{
if ((aBytes[i] & 0xFF) < (bBytes[i] & 0xFF))
{
return(-1);
}
if ((aBytes[i] & 0xFF) > (bBytes[i] & 0xFF))
{
return(1);
}
}
}
catch (Exception) {
result = string.CompareOrdinal(a.SrcAddress.ToString(), b.SrcAddress.ToString());
if (result != 0)
{
return(result);
}
}
// 比较目标端口
if (a.DstPort > b.DstPort)
{
return(1);
}
if (a.DstPort < b.DstPort)
{
return(-1);
}
// 相等元素（理论上不可达，若出现此现象请检查）
return(0);
}
