Web Service Buffs的问题 [英] Question for Web Service Buffs

问题描述

我正在尝试了解如何使用Web服务实现异步回调

，因为他们使用HTTP（无状态）来实现通信协议。

会发生什么在

他们完成后允许服务进行回调？


感谢您的帮助。

解决方案

Web Developer写道：

我正在尝试理解如何使用Web服务实现异步回调，因为它们使用HTTP（这是他们的通信协议。
在他们完成后允许服务执行回调的情况下会发生什么？

感谢您的帮助。

当您在该位置输入

网址时，允许将网页发回您的浏览器是什么？

Web Developer写道：

我正在努力解决以及如何使用Web服务实现异步回调，因为它们使用HTTP（无状态）来实现通信协议。
在服务器执行回调时会发生什么？
他们''重新完成？

感谢您的帮助。

当您输入
该位置的URL？

回答带问题的问题并不能解决问题。你能否b / b
提供有关其工作原理的任何低级细节？


似乎客户端必须打开TCP连接（在端口80上）

保持开放状态。是对的吗？如果是这样，在异步通信中，

Web服务器如何知道何时关闭连接？


谢谢。


" John Bailo"写道：

Web Developer写道：

我正在尝试理解如何使用Web服务进行异步回调，因为他们使用HTTP（对于他们的通信协议，这是无国籍的。
在他们完成后允许服务执行回调的情况下会发生什么？

感谢您的帮助。

当您在该位置输入
URL时，是什么允许将网页发送回您的浏览器？

I''m trying to understand how async callbacks are possible with web services
since they use HTTP (which is stateless) for their communication protocol.
What happens under the covers to allow services to perform callbacks when
they''re complete?

Thanks for your help.

解决方案

Web Developer wrote:

I''m trying to understand how async callbacks are possible with web services
since they use HTTP (which is stateless) for their communication protocol.
What happens under the covers to allow services to perform callbacks when
they''re complete?

Thanks for your help.

What allows a web page to be sent back to your browser when you enter a
URL in the location?

Web Developer wrote:

I''m trying to understand how async callbacks are possible with web services
since they use HTTP (which is stateless) for their communication protocol.
What happens under the covers to allow services to perform callbacks when
they''re complete?

Thanks for your help.

What allows a web page to be sent back to your browser when you enter a
URL in the location?

Responding to a question with a question doesn''t quite answer it. Can you
provide any low-level details about how it works?

It seems like the client must be opening a TCP connection (on port 80) that
stays open. Is that right? If so, in the async communication, how does the
web server know when to close the connection?

Thanks.

"John Bailo" wrote:

Web Developer wrote:

I''m trying to understand how async callbacks are possible with web services
since they use HTTP (which is stateless) for their communication protocol.
What happens under the covers to allow services to perform callbacks when
they''re complete?

Thanks for your help.

What allows a web page to be sent back to your browser when you enter a
URL in the location?

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