Firefox nsIFileInputStream不起作用 [英] Firefox nsIFileInputStream not working

问题描述

任何人都可以帮助我理解这段代码的问题：

Can anyone help me understand the problem with this chunk of code:

var file = Components.classes["@mozilla.org/file/local;1"]
           .createInstance(Components.interfaces.nsILocalFile);
file.initWithPath("\\\\.\\pipe\\MyPipe");
		
// WRITE
var myRequest = "BlaBla";
var outputStream = Components.classes["@mozilla.org/network/file-outputstream;1"]
                   .createInstance(Components.interfaces.nsIFileOutputStream);
outputStream.init(file, 0x02 | 0x08, -1, 0);
outputStream.write(myRequest, myRequest.length);

// READ
var result;
var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"]
                    .createInstance(Components.interfaces.nsIFileInputStream);
inputStream.init(file, -1, 0, 0);
inputStream.read(result);

您可能已经猜到了，我正在尝试打开命名管道，发送一些信息，并收到一些信息。发送部分有效。但是，它在阅读部分出于某种原因停止了我什么都没有！



有什么想法吗？



更新：我只知道其行为奇怪的原因，由于某种原因我无法添加 InputStream 和 OutputStream 到同一个管道。当我尝试添加输出流并写入 ONLY 时，它似乎工作得很好。但是，只要我添加 InputStream ，它就会因某种原因而失速。



任何想法为什么会发生这种情况？

As you might have already guessed, I am trying to open a named pipe, send some information, and receive some info. The sending part works. However, it stops for some reason at the reading part and i get nothing!

Any ideas?

UPDATE: I just figured out the reason why its acting strange, for some reason I can't add an InputStream and an OutputStream to the same pipe. When i try adding an outputstream and writing to it ONLY, it seems to work just fine. However, as soon as i add my InputStream, it stalls for some reason.

Any ideas Why this occurs?

推荐答案

我刚刚意识到这是一个未处理的 BUG 在 Mozilla 。每当您尝试打开 InputStream 以从 NamedPipe 中读取时，它会抛出（NS_ERROR_FAILURE）EXCEPTION 。



希望他们尽快修复它！

I just came to realize that this is an unhandled BUG in Mozilla. Whenever you try to open an InputStream for reading from a NamedPipe, it throws a (NS_ERROR_FAILURE) EXCEPTION.

Hope they fix it soon though!

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