Using INTERNET_FLAG_ASYNC to be able to make both Asynchronous and Synchrnous reques

[cuff]

Hi all,

I'm trying to use WinINET to perform a few-web operations on one particular web-server. I need to be able to perform some of the operations synchronously and some asynchronously.

I created an Handle using INTERNET_FLAG_ASYNC handle in InternetOpen, set a status callback function, connected to the server using InternetConnect with a flag INTERNET_FLAG_KEEP_CONNECTION.

Now according to WinINET documentation, if open a web-request using HttpOpenRequest with non-zero context value, the operation should perform asynchronously and if I use zero context value, it should perform synchronously.

However, irrespective of what context value I use, the subsequent HttpSendRequest throws an error ERROR_IO_PENDING. This is expected in asynchronous mode but not in synchronous mode.

Is it that, if I use INTERNET_FLAG_ASYNC in InternetOpen, all the HttpOpenRequest I make on the handle returned would invariably perform asynchronously irrespective of context value!!

Thanks in advance
Omprakash

[hankdane]

I didn't know the documentation said that, but I'm not sure if that's how it works.

What I have done in this situation is to simply open 2 Internet handles. Call InternetOpen() twice, one with the ASYNC flag and one without. Use the 'async' handle for your async requests, and the other one for your synchronous requests.

[cuff]

Well, the documentation surely says that if you passed a zero as context value the operation would finish synchronously.

In my case, I can not open two separate handles for sync and async request as I'd want to have automatic session sharing thing. (I don't want to explicitly look for cookies everytime)

Thanks