Libcurl faq (https://github.com/mikeduglas/libcurl)

questions faq
6

Q. How to translate following NetTalk code into libcurl?

 webclient.SetValue('user', 'mike')
 webclient.SetValue('password', '12345')
 webclient.SetValue('file', FileName, true)
 webclient.Post(url)

A. curl is TCurlHttpClass:

curl.FormAdd('user', 'mike')
curl.FormAdd('password', '12345')
curl.FormAddFile('file', filename)
res = curl.FormPost(url)
7

Hi!
Thanks for your work!!!
What about updating to current libcurl (7.65.3)?? It has a lot of bugfixes since v7.63.0…

TIA!!

8

Flavio,

v1.43 is available to download.

9

WOW!!!
This was FAST!!! :slight_smile:
Thank you!!!

10

Q. How to add HTTP headers? I used

curl.AddHttpHeader(‘x-test: text’)

but those headers never make it to the PHP service.

A. Call curl.SetHttpHeaders() to commit headers added by AddHttpHeader():

curl.AddHttpHeader(‘x-test: text’)
curl.AddHttpHeader(‘y-test: text’)
curl.SetHttpHeaders()

1 Like
11

Q. a SSL site throws errors when trying to connect.

A1. Don’t verify the authenticity:

  curl.SetSSLVerifyPeer(FALSE)  !- Don't verify the authenticity of the peer's certificate.
  curl.SetSSLVerifyHost(FALSE)  !- the connection succeeds regardless of the names in the certificate.

A2. Download the Mozilla CA certificate store PEM file from here and call this:

  curl.SetCAInfo('cacert.pem')
  curl.SetSSLVerifyPeer(TRUE)  !- not necessary, it is default option
  curl.SetSSLVerifyHost(TRUE)  !- not necessary, it is default option

Thanks to Arnor Baldvinsson for sharing.

1 Like
12

Hi,

What license is used for this code?

Regards,

Jared

13

No license is used for this code.

14

Hi Mike,

I am stuck.

I have setup:
respBuffer &IDynStr

And I use: res = curl.SendRequest(Loc:URL, PostString, respBuffer)

The result I get back is big and it seems to be cutoff before the end of the message.
The start tag I need to get the data from is there but there is no end tag.
The return is a XML file and the section I need is Base64 encoded.

Regards
Johan de Klerk

15

Johan,

What happens if you call SendRequest to save response to a file?

16

Hi Mike,

I then get the complete return with the end tags.

Regards
Johan de Klerk

17

Well, then check dynstr buffer - save its content to a file.

18

Hi Mike,

Thanks for the suggestion.
I can now save the complete file.
Load it into StringTheory, extract the section I need, Base64Decode it, save it as a ZIP file.
The only problem that I still need to solve is how to get the files extracted from the saved ZIP file.

Regards
Johan de Klerk

19

Hi Johan,

I just suggested to check dynstr buffer validity.

20

Hi Mike,

Thanks all sorted.
Works perfect.
LibCurl to the rescue again.

Regards
Johan de Klerk

21

Q. Is it possible to show a progress bar during the execution of curl.SendRequest?

A. Yes it is possible, you should derive XFerInfo callback method, for example:

curl                        CLASS(TCurlClass)
XFerInfo                        PROCEDURE(REAL dltotal, REAL dlnow, REAL ultotal, REAL ulnow), LONG, DERIVED
                              END

curl.XFerInfo         PROCEDURE(REAL dltotal, REAL dlnow, REAL ultotal, REAL ulnow)
  CODE
  IF dlnow
    !- downloaded {dlnow} of {dltotal} bytes
   END
  
  IF ulnow
    !- uploaded {ulnow} of {ultotal} bytes
  END
  
  RETURN PARENT.XFerInfo(dltotal, dlnow, ultotal, ulnow)
4 Likes
22

Hi Mike,

Will you be updating to LibCurl Ver 7.80.0 - November 10 2021.

Not pushing, your LibCurl is still working 100% for what I use it for in C6.3 and C10.
Just thinking of all the Bug Fixes since 7.65.3 update.

Regards

Johan de Klerk

23

Hi Johan,

I will update the binaries later today or tomorrow.

1 Like
24

v1.50 is on GitHub now.

1 Like
25

Hi Mike,

Thank you very much.
You are fast as always.

Regards

Johan de Klerk