Perl

Send a Staged Multipart REST Request

Demonstrates Rest.SendReqMultipart, which sends a multipart request using the parts configured on the object, then reads the response in separate steps.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $rest = Chilkat2::Rest->new;
my $bTls = 1;
my $bAutoReconnect = 1;
my $success = $rest->Connect('example.com', 443, $bTls, $bAutoReconnect);
if (!$success) {
    print $rest->LastErrorText, "\n";
    exit;
}

# Configure one multipart part before sending.
$rest->PartSelector('1');
$rest->AddHeader('Content-Type', 'text/plain');
$rest->AddHeader('Content-Disposition', 'form-data; name="field1"');
$success = $rest->SetMultipartBodyString('value1');
if (!$success) {
    print $rest->LastErrorText, "\n";
    exit;
}

# Send the multipart request using the configured parts.
$success = $rest->SendReqMultipart('POST', '/api/upload');
if (!$success) {
    print $rest->LastErrorText, "\n";
    exit;
}

# After sending, read the response status line and header fields.  The return value is the HTTP
# status code, or -1 if no response was received.
my $statusCode = $rest->ReadResponseHeader();
if ($statusCode < 0) {
    print $rest->LastErrorText, "\n";
    exit;
}

print 'Response status code: ', $statusCode, "\n";

# Read the response body as text.
my $responseBody = $rest->ReadRespBodyString();
if (!$rest->LastMethodSuccess) {
    print $rest->LastErrorText, "\n";
    exit;
}

print $responseBody, "\n";