# Exposing URLs for querying images

**URL:** <https://forum.dfinity.org/t/exposing-urls-for-querying-images/7669>\
**Category:** Developers\
**Created:** [October 3, 2021, 7:40am UTC](https://forum.dfinity.org/t/exposing-urls-for-querying-images/7669 "2021-10-03T07:40:16Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![heyuanxun](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/heyuanxun/32/4695_2.png) [@heyuanxun](https://forum.dfinity.org/u/heyuanxun)\
**Post date:** [January 24, 2022, 3:58am UTC](https://forum.dfinity.org/t/exposing-urls-for-querying-images/7669/17 "2022-01-24T03:58:21Z")

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I want to return some chunk information through [https://deqv7-6qaaa-aaaai-qfkna-cai.raw.ic0.app/](https://deqv7-6qaaa-aaaai-qfkna-cai.raw.ic0.app/) .  
But as you see the Callback did not work.  
It just return the first chunk.  
So,how can i return information thurough Callback to return chunk information.  
This my code [http\_demo/main.mo at main · xiaoyuanxun/http\_demo · GitHub](https://github.com/xiaoyuanxun/http_demo/blob/main/src/http/main.mo)  
Hope someone would help me  
I will be very grateful.

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