Perl

HTTP POST and Stream Response to File

See more REST Examples

Demonstrates how to send an HTTP POST and stream the response body directly to a file. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

my $rest = Chilkat2::Rest->new;

my $url = Chilkat2::Url->new;
# This URL will emit a response that echos the query params (name and age)
$url->ParseUrl('https://www.chilkatsoft.com/readPost.asp');

# Connect to the web server
my $bAutoReconnect = 1;
my $success = $rest->Connect($url->Host, $url->Port, $url->Ssl, $bAutoReconnect);
if (!$success) {
    print $rest->LastErrorText, "\n";
    exit;
}

$rest->AddQueryParam('name', 'John');
$rest->AddQueryParam('age', '33');

#  Send the HTTP POST.
$success = $rest->SendReqFormUrlEncoded('POST', $url->Path);
if (!$success) {
    print $rest->LastErrorText, "\n";
    exit;
}

# Read the response header.
my $responseStatusCode = $rest->ReadResponseHeader();
if ($responseStatusCode < 0) {
    print $rest->LastErrorText, "\n";
    exit;
}

print 'Response status code = ', $responseStatusCode, "\n";

# We expect a 200 response status if the file data is coming.
# Otherwise, we'll get a string response body with an error message(or no response body).
if ($responseStatusCode == 200) {
    my $bodyStream = Chilkat2::Stream->new;

    # The stream's sink will be a file.
    $bodyStream->SinkFile('qa_output/out.txt');

    # Read the response body to the stream.  Given that we've
    # set the stream's sink to a file, it will stream directly
    # to the file.
    $success = $rest->ReadRespBodyStream($bodyStream, 1);
    if (!$success) {
        print $rest->LastErrorText, "\n";
        exit;
    }

    print "Successfully streamed the response to a file.\n";
} else {
    my $errResponse = $rest->ReadRespBodyString();
    if (!$rest->LastMethodSuccess) {
        print $rest->LastErrorText, "\n";
    } else {
        print $errResponse, "\n";
    }
}