(Perl) Facebook Upload Photo from Local File

Uploads a new photo with a caption from a local file.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# This example assumes Chilkat HTTP to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = chilkat::CkHttp->new();

$req = chilkat::CkHttpRequest->new();
$req->put_HttpVerb("POST");
$req->put_ContentType("multipart/form-data");
$req->put_Path("/v2.7/me/photos");

# Use the previously obtained access token.
# Note: The publish_actions scope is required to upload a photo.
$req->AddHeader("Authorization","Bearer FACEBOOK-ACCESS-TOKEN");

# Send an "Expect: 100-continue" header in the request.
# This causes the HTTP server to end a 100-continue response
# immediately after receiving the HTTP header.  The client
# (Chilkat) will receive this intermediate response, and if
# it's not an error response, it knows that the HTTP server will
# accept the data that is forthcoming.
# The alternative is to get an error response after trying to upload
# the entire contents of the files.
$req->AddHeader("Expect","100-continue");

# Set a photo caption.
$req->AddParam("caption","Here are some penguins!");

# Additional parameters can be added to the request by 
# calling AddParam once per parameter.  
# See https://developers.facebook.com/docs/graph-api/reference/user/photos
# for more information about other optional parameters.

# Indicate the local file to be uploaded.
$success = $req->AddFileForUpload("source","qa_data/jpg/penguins2.jpg");
if ($success != 1) {
    print $req->lastErrorText() . "\r\n";
    exit;
}

# Upload the image file..
# resp is a HttpResponse
$resp = $http->SynchronousRequest("graph.facebook.com",443,1,$req);
if ($http->get_LastMethodSuccess() != 1) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

# Examine the response body:
$responseJson = $resp->bodyStr();
print $responseJson . "\r\n";

# The response contains JSON, such as this:
# {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}