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I am writing a Chrome extension which listens for chrome.webRequest events, some are set up for blocking, so that I can cancel the request. I need to be able to make a SYNCHRONOUS call from within the chrome.webRequest callback, which writes to the HTML5 FileSystem. Is there any way to accomplish this synchronously, i.e., so that I have my result of the FileWrite before I return from the chrome.WebRequest callback?

Zhedar
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Thomas McDermott
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1 Answers1

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I don't think so.

Some webRequest calls can be made synchronous, but file operations in FileSystem API are asynchronous and JS can't "wait" for async operations in a blocking manner.

Xan
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  • How about using a synchronous PPAPI call from the webRequest callback instead of using the FileSystem API? Would that be possible? If so, how does one implement a synchronous PPAPI call? Is there any other mechanism you could recommend? – Thomas McDermott Dec 10 '14 at 01:06
  • That is outside of my area of expertise, sorry. – Xan Dec 10 '14 at 01:15