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Re: How to resume a paused download.

From: Md Kashif <>
Date: Sun, 8 Sep 2013 21:10:52 +0800 (SGT)


I think I did not explain myself clearly. What I've done is that for download I initiate a separate thread. The easyhandle is global. The dialog on which pause button is present is on the main thread. When user clicks pause I call curl_easy_pause() to pause the download. When user clicks Resume then I unpause using curl_easy_pause(). However the documentation of curl_easy_pause() clearly says that it must be called from the same thread where download is happening. 

1) Though pause\resume works in my case from different threads but I need to know if I'm doing something wrong here and should take a different approach because documentation suggests that I'm using curl_easy_pause() in a wrong way.

2) Now other option for me is CURL_WRITEFUNC_PAUSE but if I use it then how do I unpause?


----- Original Message -----
From: Clemens Gruber <>
To: Md Kashif <>; libcurl development <>
Sent: Saturday, 7 September 2013 10:17 PM
Subject: Re: How to resume a paused download.

On 07.09.2013, at 18:01, Md Kashif <> wrote:

> Hi,
> I'm trying to implement a simple download manager application that supports Pause\ Resume functionality that can pause or resume download based on a button click from user.
> As I see it I can pause my download by returning CURL_WRITEFUNC_PAUSE from my write function. But I'm wondering how would I resume my download back because the thread would just hang after returning CURL_WRITEFUNC_PAUSE.
> Since I cannot call curl_easy_pause() from another thread how do I resume the download?
> Thanks.


Take a look at curl_easy_pause:

Best regards,

List admin:
Received on 2013-09-08