libcurl.pbi

[flashbob]

... of course it's just a simple example

When I look at the commands regarding POP3 (see also links below), libcurl's functionality seems to be limited here. According to my research so far, even in C/C++ there is no example for retrieving all emails at once without logging into the server for each mail.

Even Stenberg's manual does not provide any useful information here.

After you maintain this topic, you might have a tip for an example in C, C++, PHP or a corresponding link ?


https://everything.curl.dev/usingcurl/reademail.html
https://curl.se/libcurl/c/example.html
https://github.com/curl/curl/tree/master/docs/examples

[infratec]

I only provide the access to the libcurl commands.

But ...

you can do multiple curl_easy_perform() after an other.
login should be only done once.

So first get the list of ids, then do a loop with

Code: Select all

ForEach IndexList()
 curl_easy_setopt(curl, #CURLOPT_URL, "pop3://pop.example.com/" + str(IndexList()))
 curl_easy_perform()
 ...
Next

[flashbob]

Thanks for the info.

Your example shows normal usage of curl_easy. This works for me too (runs in its own thread).
The Problem: Every time you receive a message, a new login is performed (see code below).

Code: Select all

curl = curl_easy_init()
If curl
  ; Set username and password
  curl_easy_setopt_str(curl, #CURLOPT_USERNAME, User$)                            ; **** Login (every time in loop)
  curl_easy_setopt_str(curl, #CURLOPT_PASSWORD, Password$)               
  curl_easy_setopt_str(curl, #CURLOPT_URL, Url$ + "/" + Str(MsgNum))
  ...
  res = curl_easy_perform(curl)
  If res = #CURLE_OK
    ...
  endif
  curl_easy_cleanup(curl)
endif  

My idea was to log into the server once and then retrieve all emails without having to re-authenticate.
I think when using curl_easy there is no other way to bypass the repeated login...

[infratec]

I see no loop in your code.

The loop needs to be inside your If curl after your settings.

Look in my code snippet above.

[flashbob]

That is clear. This shouldn't be the complete code with loop, but just show that a login is required every time you use curl_easy...

but thanks for the info...

[HeX0R]

I don't want to hijack this thread, but maybe this is an alternative:
viewtopic.php?t=51959

[flashbob]

Hi HeXOR,
thanks for the information, I know the thread and your code works really fine on windows - good stuff!

I used libcurl because my application runs on Windows and MAC and I didn't find the necessary libs for libTLS for MAC
Furthermore libcurl is part of macOS... and I didn't want to compile the libs myself

So at the moment my program (Pop3) is running fine under Windows/Mac, but from my point of view the performance of
libcurl (curl_easy function) has potential for improvement. That's why I asked here if there is another way for (faster) retrieval of emails.

Maybe I find a corresponding example under C or PHP that I can adapt.

[infratec]

libcurl dlls updated to 8.11.0

[le_magn]

Hi Infratec, could you show me an example of how to monitor the progress of a file download? thanks

[infratec]

Added DownloadProgress.pb

You can use PostEvents to update a main program.

[le_magn]

Added DownloadProgress.pb

You can use PostEvents to update a main program.

thank you very much

[infratec]

Modified DownloadProgress.pb to show it with a ProgressBarGadget()

[infratec]

Added an example:

FTPS_rename.pb

[infratec]

libcurl dlls updated to 8.11.1

[infratec]

Added HTTP_gzip.pb

To show how a content can be downloaded witz gzip compression to reduce transmission data size.

Since the internal libcurl can not handle the compression, the external libcurl.dll is needed beside the executable.