PHP

Socket Send and Receive BinData

Demonstrates the Chilkat Socket ReceiveBdN and SendBd methods. Chilkat2 PHP

<?php

use Chilkat2\BinData;
use Chilkat2\Socket;

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

$sock = new Socket();

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

$useTls = false;
$port = 4242;
$maxWaitMs = 5000;
try {
    $sock->Connect('tcpbin.com', $port, $useTls, $maxWaitMs);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Wait a max of 2 seconds for a response..
$sock->MaxReadIdleMs = 2000;

// Send 26 bytes contained in a Chilkat BinData
$bdToSend = new BinData();
$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 BinData();
// Receive the 26 bytes previously sent, plus the LF char.
try {
    $sock->ReceiveBdN(27, $bdRecv);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Show the contents of bdRecv in hex format
echo $bdRecv->GetEncoded('hex'), "\n";

// Output:  4142434445464748494A4B4C4D4E4F505152535455565758595A0A