(PHP Extension) REST Receive Response in Chunks

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Demonstrates how to receive a REST HTTP response in chunks.

Note: This example requires Chilkat 10.1.0 or greater.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

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

$rest = new CkRest();

// Connect to the web server
$bTls = true;
$port = 443;
$bAutoReconnect = true;
$success = $rest->Connect('chilkatsoft.com',$port,$bTls,$bAutoReconnect);
if ($success == false) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// Send the request.
// This can be *any* kind of request: POST, GET, PUT, etc. using *any* of the Chilkat REST methods that send requests.
// For this example, we'll just GET a simple XML document that is about 274K in size.

$success = $rest->SendReqNoBody('GET','/hamlet.xml');
if ($success == false) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// Get the response header.
$statusCode = $rest->ReadResponseHeader();
if ($statusCode < 0) {
    print $rest->lastErrorText() . "\n";
    exit;
}

print 'response status code = ' . $statusCode . "\n";

$outputFile = 'c:/temp/qa_output/hamlet.xml';

$fac = new CkFileAccess();
$success = $fac->OpenForWrite($outputFile);
if ($statusCode < 0) {
    print $fac->lastErrorText() . "\n";
    exit;
}

// Get the response in chunks.
// (Note: There are more efficient ways to simply download a file from a web server, such as by calling Chilkat's Http.Download method.
// The purpose of this method is to show how to receive a response chunk-by-chunk.)
$bd = new CkBinData();
$status = 1;
while ($status == 1) {
    // Read a minimum of 16000 bytes.
    // Note: Because of TLS message lengths, or the possibility of the response being either compressed (gzip/deflate) or in the HTTP chunked encoding,
    // the amount of data received in each call can be greater than the specified min size.
    // Chilkat will return from the call as soon as it has received an amount equal to or more than the specified size,
    // except for the very last chunk, which can be less that the min size or even 0 bytes.

    // The status will be one of three values:
    // -1 = error
    // 0 = received the last chunk of the response.
    // 1 = received a chunk, and more chunks are coming..

    // The received data is *appended* to the contents of the BinData object.
    $status = $rest->ReadRespChunkBd(16000,$bd);
    if ($status >= 0) {
        print 'Received chunk: ' . $bd->get_NumBytes() . ' bytes' . "\n";
        $fac->FileWriteBd($bd,0,0);
        $bd->Clear();
    }

}

$fac->FileClose();

print 'Success.' . "\n";

?>