# Libcurl debug off **URL:** \ **Category:** questions\ **Tags:** libcurl\ **Created:** [May 16, 2025, 5:57am UTC](https://clarionhub.com/t/libcurl-debug-off/8169 "2025-05-16T05:57:01Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 16, 2025, 5:57am UTC](https://clarionhub.com/t/libcurl-debug-off/8169/1 "2025-05-16T05:57:01Z")
Hello! I want to remove Debug info for libculr when an app run with libcurl and I can't find how? Because In DebugView++ I see many debug info from libcurl. Thanks in advance! ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 16, 2025, 11:41am UTC](https://clarionhub.com/t/libcurl-debug-off/8169/2 "2025-05-16T11:41:07Z")
Use SetDebugInfoFilter method. ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 16, 2025, 4:11pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/3 "2025-05-16T16:11:03Z")
Thank you Mike. But I need an example please! Is this a curl method? Because I can’t find it. Thanks in advance! ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 16, 2025, 5:22pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/4 "2025-05-16T17:22:46Z")
If you can’t find it, try to upgrade. ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 22, 2025, 4:59pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/5 "2025-05-22T16:59:11Z")
I update to last version but I use TCurlHttpClass and not TCurlClass. The SetDebugInfoFilter is only in TCurlClass. Thank you! ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 22, 2025, 6:12pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/6 "2025-05-22T18:12:34Z")
Read “CLASS (object declaration)” topic in the Clarion help. ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 23, 2025, 6:26am UTC](https://clarionhub.com/t/libcurl-debug-off/8169/7 "2025-05-23T06:26:48Z")
```clarion GetImage PROCEDURE(STRING pURL, *STRING pErrorMsg) curl TCurlHttpClass res CURLcode tempFileName STRING(255) CODE pErrorMsg = '' tempFileName = CLIP(COM:S1URL4) curl.Init() IF UPPER(SUB(CLIP(pURL),1,5)) = 'HTTPS' res = curl.SetSSLVerifyHost(FALSE) IF res <> CURLE_OK pErrorMsg = 'SetSSLVerifyHost Error: ' & curl.StrError(res) RETURN END res = curl.SetSSLVerifyPeer(FALSE) IF res <> CURLE_OK pErrorMsg = 'SetSSLVerifyPeer Error: ' & curl.StrError(res) RETURN END res = curl.SetSSLVersion(CURL_SSLVERSION_DEFAULT) IF res <> CURLE_OK pErrorMsg = 'SetSSLVersion Error: ' & curl.StrError(res) RETURN END END res = curl.ReadFile(pURL, tempFileName) IF res = CURLE_OK ELSIF res = -1 pErrorMsg = 'Cannot create local file: ' & tempFileName ELSE pErrorMsg = 'Download failed: ' & curl.StrError(res) END curl.Cleanup() RETURN ``` ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 23, 2025, 1:47pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/8 "2025-05-23T13:47:55Z")
> [@Michael\_Diamantidis](#): > > res = curl.SetSSLVerifyHost(FALSE) Doesn’t this throw a compilation error, because the SetSSLVerifyHost method isn’t in TCurlHttpClass? ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 23, 2025, 4:00pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/9 "2025-05-23T16:00:36Z")
The version that I use now and compiled is: ```clarion GetImage PROCEDURE(STRING pURL, *STRING pErrorMsg) curl TCurlHttpClass res CURLcode tempFileName STRING(255) CODE pErrorMsg = '' tempFileName = CLIP(COM:S1URL4) curl.Init() res = curl.SetOpt(CURLOPT_VERBOSE, FALSE) res = curl.SetOpt(CURLOPT_DEBUGFUNCTION, 0) IF UPPER(SUB(CLIP(pURL),1,5)) = 'HTTPS' res = curl.SetSSLVerifyHost(FALSE) IF res <> CURLE_OK pErrorMsg = 'SetSSLVerifyHost Error: ' & curl.StrError(res) RETURN END res = curl.SetSSLVerifyPeer(FALSE) IF res <> CURLE_OK pErrorMsg = 'SetSSLVerifyPeer Error: ' & curl.StrError(res) RETURN END res = curl.SetSSLVersion(CURL_SSLVERSION_DEFAULT) IF res <> CURLE_OK pErrorMsg = 'SetSSLVersion Error: ' & curl.StrError(res) RETURN END END res = curl.ReadFile(pURL, tempFileName) IF res = CURLE_OK ELSIF res = -1 pErrorMsg = 'Cannot create local file: ' & tempFileName ELSE pErrorMsg = 'Download failed: ' & curl.StrError(res) END curl.Cleanup() RETURN ``` ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 23, 2025, 4:42pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/10 "2025-05-23T16:42:38Z")
Yup, so much effort just to avoid reading the help 🙂 ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 23, 2025, 5:43pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/11 "2025-05-23T17:43:10Z")
I don’t understand what you mean. I read the help but I can’t find how to make debug off. ---
**Author:** ![urayoan](https://clarionhub.com/user_avatar/clarionhub.com/urayoan/32/1288_2.png) [@urayoan](https://clarionhub.com/u/urayoan)\ **Post date:** [May 23, 2025, 6:27pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/12 "2025-05-23T18:27:26Z")
@Michael_Diamantidis , maybe this help (CLASSes are not my strong part in Clarion) First declare the class you want to use ```clarion curlLog CLASS(TCurlClass) END!Class ``` Then (i guess at the init of the procedure) set this ```clarion curlLog.SetDebugInfoFilter(CURL_DEBUGINFO_NONE) CURL_DEBUGINFO_NONE is an equate defined in libcurl.inc, there are other options as well. The default is CURL_DEBUGINFO_ALL !- Debug info bits CURL_DEBUGINFO_TEXT EQUATE(00000001b) !- informational text CURL_DEBUGINFO_HEADER_IN EQUATE(00000010b) !- header (or header-like) data received from the peer CURL_DEBUGINFO_HEADER_OUT EQUATE(00000100b) !- header (or header-like) data sent to the peer CURL_DEBUGINFO_DATA_IN EQUATE(00001000b) !- unprocessed protocol data received from the peer CURL_DEBUGINFO_DATA_OUT EQUATE(00010000b) !- protocol data sent to the peer CURL_DEBUGINFO_SSL_DATA_IN EQUATE(00100000b) !- SSL/TLS (binary) data received from the peer CURL_DEBUGINFO_SSL_DATA_OUT EQUATE(01000000b) !- SSL/TLS (binary) data sent to the peer CURL_DEBUGINFO_IN EQUATE(00101011b) !- incoming on;ly CURL_DEBUGINFO_OUT EQUATE(01010101b) !- outgoing only !bitmasks CURL_DEBUGINFO_NONE EQUATE(00000000b) !- off CURL_DEBUGINFO_NO_DATA_IN EQUATE(11010111b) !- don't log CURL_DEBUGINFO_DATA_IN and CURL_DEBUGINFO_SSL_DATA_IN CURL_DEBUGINFO_NO_DATA_OUT EQUATE(10101111b) !- don't log CURL_DEBUGINFO_DATA_OUT and CURL_DEBUGINFO_SSL_DATA_OUT CURL_DEBUGINFO_NO_DATA EQUATE(00000111b) !- don't log any DATA CURL_DEBUGINFO_ALL EQUATE(11111111b) !- no filters ``` ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [May 23, 2025, 6:31pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/13 "2025-05-23T18:31:50Z")
Once again, to filter or completely turn the debug logging off I suggested > Use SetDebugInfoFilter method. but it doesn’t work for you for some reason, no problem. ---
**Author:** ![urayoan](https://clarionhub.com/user_avatar/clarionhub.com/urayoan/32/1288_2.png) [@urayoan](https://clarionhub.com/u/urayoan)\ **Post date:** [May 23, 2025, 6:49pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/14 "2025-05-23T18:49:14Z")
Ha! I figure it out Check the example DownloadFile.clw @Michael_Diamantidis that is included in the libcurl template. > Hope this helps ---
**Author:** ![Michael\_Diamantidis](https://clarionhub.com/user_avatar/clarionhub.com/michael_diamantidis/32/430_2.png) [@Michael\_Diamantidis](https://clarionhub.com/u/Michael_Diamantidis)\ **Post date:** [May 23, 2025, 7:53pm UTC](https://clarionhub.com/t/libcurl-debug-off/8169/15 "2025-05-23T19:53:26Z")
Thank you for your help!