On Mon, Nov 16, 2009 at 7:47 AM, Andy Shellam (Mailing Lists)
<andy-lists_at_networkmail.eu> wrote:
> Notice that the pointer to the data (ptr) has the address of 0x1 which causes a segfault if I try to read it:
>
> (gdb) p (char*)ptr
> $1 = 0x1 <Address 0x1 out of bounds>
>
> Also the "307" passed to the size parameter is actually the size of the data received - no idea what the nmemb figure is.  In my working application, the size of the data is in the nmemb parameter, and the size parameter is always 1.
>
> Any ideas what could cause this?  Note that the working application does typically have 2-3 calls made to my write function (it receives an average of 25KB) whereas this one has tiny responses (average of 300 bytes) - is that significant?

Make OnDataRead() a static member function and use CURLOPT_WRITEDATA
(possibly the "this" pointer when setting up the connection) to
provide a proper context for each callback?

Lars Nilsson
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Received on 2009-11-16