检查计算机是否在线 [英] Checking if the computer is online
问题描述
大家好，
我有一个愚蠢的问题。是否有简单的方法来检查计算机是否连接到互联网？看起来这应该是一个非常好的b / b
直接做的事情，但由于我完全不熟悉套接字
等等，所以在得到我的手之前我会请求你的帮助很脏。
干杯，
Mickel G.
-
Mickel Gr？nroos，应用专家，语言学，研究支持，CSC
PL 405（Tekniikantie 15 a D），02101 Espoo，芬兰，电话+ 358-9-4572237
CSC是芬兰的IT科学中心， www.csc.fi
Hi all,
I have a silly question. Is there are simple way to check if the computer
is connected to the Internet? It seems this should be a pretty
straight-forward thing to do, but as I am totally unfamiliar with sockets
and such, I ask for your help before getting my hands dirty.
Cheers,
Mickel G.
--
Mickel Gr?nroos, application specialist, linguistics, Research support,CSC
PL 405 (Tekniikantie 15 a D), 02101 Espoo, Finland, phone +358-9-4572237
CSC is the Finnish IT center for science, www.csc.fi
推荐答案
Mickel Gr？nroos< mi **** @ csc.fi>写道：
Mickel Gr?nroos <mi****@csc.fi> writes:
大家好，
我有一个愚蠢的问题。是否有简单的方法来检查计算机是否已连接到Internet？看起来这应该是一个非常直接的事情，但由于我完全不熟悉套接字
等等，所以在弄脏之前我会请求你的帮助。
Hi all,
I have a silly question. Is there are simple way to check if the computer
is connected to the Internet? It seems this should be a pretty
straight-forward thing to do, but as I am totally unfamiliar with sockets
and such, I ask for your help before getting my hands dirty.
对于Windows？
< http://article.gmane.org/gmane.comp.python.windows/969>
Thomas
For windows?
<http://article.gmane.org/gmane.comp.python.windows/969>
Thomas
2003年9月18日星期四，Thomas Heller写道：
On Thu, 18 Sep 2003, Thomas Heller wrote:
Mickel Gr ？nroos< mi **** @ csc.fi>写道：
Mickel Gr?nroos <mi****@csc.fi> writes:
大家好，
我有一个愚蠢的问题。是否有简单的方法来检查计算机是否已连接到Internet？看起来这应该是一个非常直接的事情，但由于我完全不熟悉套接字
等等，所以在弄脏之前我会请求你的帮助。
Hi all,
I have a silly question. Is there are simple way to check if the computer
is connected to the Internet? It seems this should be a pretty
straight-forward thing to do, but as I am totally unfamiliar with sockets
and such, I ask for your help before getting my hands dirty.
对于Windows？
< http://article.gmane.org/gmane.comp.python.windows/969>
For windows?
<http://article.gmane.org/gmane.comp.python.windows/969>
我想在Windows（2000 / XP）和（Redhat）Linux（7.x
或更高）上完成这项工作。
有没有办法在某种计时器中包含对urllib.urlopen的调用，
如果N秒内没有答案则调用失败？ （即如果
urllib.urlopen无法在N秒内打开特定网页，那么我
假设原因是计算机不在线。）那将是
对我来说足够好。有什么建议吗？
/ Mickel
I want to get this done on both Windows (2000/XP) and (Redhat) Linux (7.x
or higher).
Isn''t there a way to wrap a call to urllib.urlopen in some kind of timer,
so that the call fails if there is no answer in N seconds? (I.e. if
urllib.urlopen cannot open a specific web page in N seconds, then I
assume that the reason is that the computer is not online.) That would be
good enough for me. Any suggestions?
/Mickel
Mickel Gr？nroos< mi **** @ csc。 Fi无线网络和GT;写道：
Mickel Gr?nroos <mi****@csc.fi> writes:
2003年9月18日星期四，Thomas Heller写道：
On Thu, 18 Sep 2003, Thomas Heller wrote:
Mickel Gr？nroos< mi **** @ csc .fi>写道：
Mickel Gr?nroos <mi****@csc.fi> writes:
>大家好，
>
>我有一个愚蠢的问题。是否有简单的方法来检查计算机是否
>是连接到互联网？看来这应该是一个非常好的
>直截了当的事情，但因为我完全不熟悉套接字
>等等，在弄脏之前我请求你的帮助。
> Hi all,
>
> I have a silly question. Is there are simple way to check if the computer
> is connected to the Internet? It seems this should be a pretty
> straight-forward thing to do, but as I am totally unfamiliar with sockets
> and such, I ask for your help before getting my hands dirty.
对于Windows？
< http://article.gmane.org/gmane .comp.python.windows / 969>
For windows?
<http://article.gmane.org/gmane.comp.python.windows/969>
我想在Windows（2000 / XP）和（Redhat）Linux（7.x
或更高版本）上完成此操作）。
是不是有办法在某种计时器中调用urllib.urlopen的调用，
如果在N秒内没有答案，则调用失败？ （即如果
urllib.urlopen无法在N秒内打开特定的网页，那么我认为原因是计算机不在线。）这对我来说足够好了。 。有什么建议吗？
I want to get this done on both Windows (2000/XP) and (Redhat) Linux (7.x
or higher).
Isn''t there a way to wrap a call to urllib.urlopen in some kind of timer,
so that the call fails if there is no answer in N seconds? (I.e. if
urllib.urlopen cannot open a specific web page in N seconds, then I
assume that the reason is that the computer is not online.) That would be
good enough for me. Any suggestions?
当然你可以这样做。甚至更简单的插座
模块。
但这取决于你到底想要什么：
它已经被很长一段时间我都有拨号连接，但IIRC，
在计算机没有连接的情况下尝试网络活动会导致Windows尝试建立连接时的
。
总结：上面提到的URL包含完全回答的代码
你的原始问题。
Thomas
Of course you can do it this way. Or even simpler with the socket
module.
But it depends on what you exactly want:
It''s been quite a time that I had a dial-up connection, but IIRC,
trying network activity when the computer was not connected would result
in Windows trying to establish the connection.
To conclude: the above mentioned URL contains code which exactly answers
your original question.
Thomas
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