Ping - 取决于使用Ping.Send还是Ping.SendAsync的不同行为 [英] Ping - different behaviour depeding on whether using Ping.Send or Ping.SendAsync

问题描述

我有一个简单的程序，它使用Ping类发送ping。 TTL设置为2（作为示例）并且此跳跃为我超时（回复状态为'TimedOut'）。
如果我执行类似的操作：
PingReply reply = ping.Send（ " www.google.co.uk" ，2000，buffer， new PingOptions （2， true ））;
reply.Address为null。

如果我执行以下操作：
ping.SendAsync（ " www.google.co.uk" ，2000，buffer， new PingOptions < font size = 2>（2， true ）， null ）;
事件args的Reply.Address属性设置为主机的解析IP地址


显然我可以解决这个问题，Send和SendAsync之间存在不同的行为，这有点奇怪。任何人都可以确认这种行为，它是否正在"窃听"？或者我犯了一个简单的错误？ :)

Al

Hi,
 I have a simple program which is sending a ping using the Ping class. The TTL is set to 2 (as an example) and this hop times out for me (reply status is 'TimedOut').
If I do something like:
PingReply reply = ping.Send("www.google.co.uk", 2000, buffer, new PingOptions(2, true));
reply.Address is null.

If I do something like:
ping.SendAsync("www.google.co.uk", 2000, buffer, new PingOptions(2, true), null);
The event args' Reply.Address property is set to the resolved IP address of the host I sent in.

Obviously I can work around this, it's just a bit odd that there is a different behaviour between Send and SendAsync. Can anyone else confirm this behaviour and is it working 'bugging'? Or have I made a simple mistake? :)

Al

推荐答案

您好，您可以使用Red Gate的.NET Reflector打开Ping类，看看如何实现Ping.Send（）和Ping.SendAsync（）方法。

Hi,

you can use Red Gate's .NET Reflector to open Ping class and see how Ping.Send() and Ping.SendAsync() methods are implemented.

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