The commercial targeting Teams (formerly Skype for Business) has a rich set of development methods, but unfortunately Skype development platform is not so flexible and it won’t have any options (such as REST APIs, etc) to operate with attachment programmatically.

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thanks for your answer, is there any options to get a attachment(photo, video, ..) message from a user in a group

Bot cannot see messages without a tag, but any attachment cannot be sent to a group with a tag

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Sorry, but bot framework is common API for channels (FB, teams, slack, e-mail, …) and doesn’t have Skype specific functions, such as, accessing gallery contents.

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how can a bot get the entire attachment gallery(photo, video, doc) from the group it belongs to, is it possible to send get request to the server to get the whole group chat gallery?
help please

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It seems that you’re using bot framework endpoint (when skype, https://skype.botframework.com/), not skype bot platform endpoint (https://apis.skype.com). If you use bot framework, could you please follow the next post. (This post is writing for skype bot platform.)
https://blogs.msdn.microsoft.com/tsmatsuz/2016/08/19/build-skype-bot-with-microsoft-bot-framework-oauth-and-rest-api/
If the error exists, could you please send me the access token string ? This error seems to be caused by the token.

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I have been able to generate a token and verified the headers as well. Everything seems fine.
But yet the 403 error keeps on coming

$message = ‘{
“type”: “message/text”,
“text”: “Hi! (wave)”
}’;

$ch = curl_init($url);

$headr = array();
$headr[] = ‘Content-length: ‘ . strlen($message);
$headr[] = ‘Content-type: application/json; charset=utf-8’;
$headr[] = ‘Authorization: Bearer ‘.$token;

$options = array(
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HEADER => true,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_SSL_VERIFYHOST => false,
CURLOPT_SSL_VERIFYPEER => false,
CURLOPT_HTTPHEADER => $headr,
CURLOPT_POSTFIELDS => $message,
CURLOPT_POST => true,
CURLOPT_URL => $url ,
;
$response = curl_exec($ch);

curl_setopt_array($ch , $options);

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The result is not including refresh token, then you retrieve access token again if it’s expired. (No login UI is needed for this app permission’s flow.)

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