Perl

Send a Staged REST Request with No Body

Demonstrates Rest.SendReqNoBody, which sends a request without a body as the first step of the staged request model. After it succeeds, the response header and body are read separately.

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;
}

# Send a request without a request body.  This is a low-level send: after it succeeds, read the
# response header and body separately.
$success = $rest->SendReqNoBody('GET', '/api/items/123');
if (!$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";