(Perl) HTTP POST and Stream Response to File

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

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

use chilkat();

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

$rest = chilkat::CkRest->new();

$url = chilkat::CkUrl->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
$bAutoReconnect = 1;
$success = $rest->Connect($url->host(),$url->get_Port(),$url->get_Ssl(),$bAutoReconnect);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

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

#  Send the HTTP POST.
$success = $rest->SendReqFormUrlEncoded("POST",$url->path());
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

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

print "Response status code = " . $responseStatusCode . "\r\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) {

    $bodyStream = chilkat::CkStream->new();

    # The stream's sink will be a file.
    $bodyStream->put_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 != 1) {
        print $rest->lastErrorText() . "\r\n";
        exit;
    }

    print "Successfully streamed the response to a file." . "\r\n";

}
else {
    $errResponse = $rest->readRespBodyString();
    if ($rest->get_LastMethodSuccess() != 1) {
        print $rest->lastErrorText() . "\r\n";
    }
    else {
        print $errResponse . "\r\n";
    }

}