Wrong data received in a write callback
Date: Wed, 16 May 2007 11:54:03 +0200
I'm using libcurl 7.15.5 in a small download utility I wrote. This
software is cross compiled and ran on an ARM9 platform.
Performing some testing, I noticed some downloaded files (about 5%)
are different from the original.
The corruption consists in a few bytes changed in a whole file, for
example this diff:
000b8d0 4160 6e7f 1a99 9b03 7223 d368 11ec 23f3
000b8e0 4619 32f9 a434 6dd4 f9b6 81e1 a203 4bc2
000b8f0 e04e 578a c3df 4812 906a afbe d3ff fee5
--- 000b8d0 4160 6e7f 1a99 9b03 7223 0100 0010 0200 000b8e0 0020 d940 c5d2 13e0 c44f 0000 0000 3300 000b8f0 c61c 7ed4 c00c 0100 0010 afbe d3ff fee5 I dumped the data received in the write callback (*ptr) and noticed that this data is already faulty (i.e it's not a problem of i/o disk). The software compiled for a i386 platform never yields this problem, hence it is a problem on the platform side. My question is, what tools would you recommend to me that I could use to find the underlying problem ? I've seen there is a memory debug utility that can be compiled in libcurl, but any more pieces of advice are welcome. Regards, NicolasReceived on 2007-05-16