(PHP Extension) Socket Send and Receive BinData

Demonstrates the Chilkat Socket ReceiveBdN and SendBd methods.

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

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$sock = new CkSocket();

// --------------------------------------------------------------------
// This example uses the public TCP echo service at https://tcpbin.com/
// --------------------------------------------------------------------

$useTls = false;
$port = 4242;
$maxWaitMs = 5000;
$success = $sock->Connect('tcpbin.com',$port,$useTls,$maxWaitMs);
if ($success == false) {
    print $sock->lastErrorText() . "\n";
    exit;
}

// Wait a max of 2 seconds for a response..
$sock->put_MaxReadIdleMs(2000);

// Send 26 bytes contained in a Chilkat BinData
$bdToSend = new CkBinData();
$i = 0;
$byteVal = 65;
while ($i < 26) {
    $bdToSend->AppendByte($byteVal);
    $byteVal = $byteVal + 1;
    $i = $i + 1;
}

// Send the contents of the BinData
// Pass zero's in the 2nd and 3rd arguments to send the entire contents of the BinData.
$sock->SendBd($bdToSend,0,0);

// The tcpbin.com echo server only echoes after receiving an LF (linefeed char)
$sock->SendByte(10);

// The echo server will echo back whatever is sent to it.
// We should be able to read the same bytes back..
$bdRecv = new CkBinData();
// Receive the 26 bytes previously sent, plus the LF char.
$success = $sock->ReceiveBdN(27,$bdRecv);
if ($success == false) {
    print $sock->lastErrorText() . "\n";
    exit;
}

// Show the contents of bdRecv in hex format
print $bdRecv->getEncoded('hex') . "\n";

// Output:  4142434445464748494A4B4C4D4E4F505152535455565758595A0A

?>