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PHP ActiveX Examples

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(PHP ActiveX) Send and Receive WebSocket Frame

Demonstrates how to send a websocket text frame to a websocket echo server. This example uses Chilkat's websocket test echo server at ws://websockets.chilkat.io/wsChilkatEcho.ashx

Note: The websockets.chilkat.io server imposes the following limitations:
Messages must be 16K or less, and each connection is limited to a max of 16 echoed messages.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

$ws = new COM("Chilkat_9_5_0.WebSocket");

// For brevity, this example does not check for errors when etablishing the WebSocket connection.
// See Establish WebSocket Connection for more complete sample code for making the connection.

$rest = new COM("Chilkat_9_5_0.Rest");
// Connect to websockets.chilkat.io
// IMPORTANT: websockets.chilkat.io accepts frames of up to 16K in size and echoes them back.
// IMPORTANT: The websockets.chilkat.io server imposes the following limitations: 
// ---------- Messages must be 16K or less, and each connection is limited to a max of 16 echoed messages.
$success = $rest->Connect('websockets.chilkat.io',80,0,0);
$ws->UseConnection($rest);
$ws->AddClientHeaders();
$responseBodyIgnored = $rest->fullRequestNoBody('GET','/wsChilkatEcho.ashx');
$success = $ws->ValidateServerHandshake();
if ($success != 1) {
    print $ws->LastErrorText . "\n";
    exit;
}

// This example demonstrates sending a frame and receiving a text frame.

// Send a frame containing the string "Hello World!"
// This will be the first and final frame, and therefore this constitutes the entire message.
$finalFrame = 1;
$success = $ws->SendFrame('Hello World!',$finalFrame);
if ($success != 1) {
    print $ws->LastErrorText . "\n";
    exit;
}

// Read an incoming frame.
$success = $ws->ReadFrame();
if ($success != 1) {
    print 'Failed to receive a frame' . "\n";
    print 'ReadFrame fail reason = ' . $ws->ReadFrameFailReason . "\n";
    print $ws->LastErrorText . "\n";
    exit;
}

// Show the string that was received.
$receivedStr = $ws->getFrameData();
print 'Received: ' . $receivedStr . "\n";

// Close the websocket connection.
$success = $ws->SendClose(1,1000,'Closing this websocket.');
if ($success != 1) {
    print $ws->LastErrorText . "\n";
    exit;
}

// Read the Close response.
$success = $ws->ReadFrame();
if ($success != 1) {
    print 'ReadFrame fail reason = ' . $ws->ReadFrameFailReason . "\n";
    print $ws->LastErrorText . "\n";
    exit;
}

// Should receive the "Close" opcode.
print 'Received opcode: ' . $ws->FrameOpcode . "\n";
// Should be the same status code we sent (1000)
print 'Received close status code: ' . $ws->CloseStatusCode . "\n";
// The server may echo the close reason.  If not, this will be empty.
print 'Echoed close reason: ' . $ws->CloseReason . "\n";

print 'Success.' . "\n";

?>

 

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