奇怪的行为（ajax长轮询通道）“拒绝”从普通浏览器连接？

发布于 2024-11-20 00:33:58 字数 159 浏览 2 评论 0原文

当您复制此链接

http://q55.queue.vkontakte.ru/im639

并将其放置到当前浏览器选项卡时，按 Enter 键，它会“加载”，地址发生变化，但内容仍然相同（您仍然处于这个问题中）。那是什么？这是程序化行为吗？

原文

When you copy this link

http://q55.queue.vkontakte.ru/im639

and place it to currect browser tab, press enter, it does "load", address changes, but content is still the same (you're still in this question). What's that? Is that programmatical behavior ?

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浅忆流年 2024-11-27 00:33:58

我什么也没看到。它不执行任何操作，因为没有任何可用的东西。

alfred@alfred-laptop:~/node/contact$ curl -v http://q55.queue.vkontakte.ru/im639* About to connect() to q55.queue.vkontakte.ru port 80 (#0)
*   Trying 87.240.134.232... connected
* Connected to q55.queue.vkontakte.ru (87.240.134.232) port 80 (#0)
> GET /im639 HTTP/1.1
> User-Agent: curl/7.21.0 (i686-pc-linux-gnu) libcurl/7.21.0 OpenSSL/0.9.8o zlib/1.2.3.4 libidn/1.18
> Host: q55.queue.vkontakte.ru
> Accept: */*
> 
< HTTP/1.1 204 No Content
< Server: nginx/0.7.59
< Date: Mon, 11 Jul 2011 18:49:25 GMT
< Content-Type: text/html
< Connection: keep-alive
< 
* Connection #0 to host q55.queue.vkontakte.ru left intact
* Closing connection #0

我们得到状态码 HTTP/1.1 204 No Content

而且这与长轮询无关，因为连接根本没有挂起。 URL 看起来像是指向一个图像。我无法想象您应该进行长轮询来检索简单的图像。

I am not seeing anything. It does not do anything because nothing is available.

alfred@alfred-laptop:~/node/contact$ curl -v http://q55.queue.vkontakte.ru/im639* About to connect() to q55.queue.vkontakte.ru port 80 (#0)
*   Trying 87.240.134.232... connected
* Connected to q55.queue.vkontakte.ru (87.240.134.232) port 80 (#0)
> GET /im639 HTTP/1.1
> User-Agent: curl/7.21.0 (i686-pc-linux-gnu) libcurl/7.21.0 OpenSSL/0.9.8o zlib/1.2.3.4 libidn/1.18
> Host: q55.queue.vkontakte.ru
> Accept: */*
> 
< HTTP/1.1 204 No Content
< Server: nginx/0.7.59
< Date: Mon, 11 Jul 2011 18:49:25 GMT
< Content-Type: text/html
< Connection: keep-alive
< 
* Connection #0 to host q55.queue.vkontakte.ru left intact
* Closing connection #0

We get status code HTTP/1.1 204 No Content

Also this has nothing to do with long-polling, because the connection is not hanging at all. It looks like the URL is pointing to an image. I can not image you should be doing long-polling for retrieving a simple image.

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