Debugging with Socket Session Logging

Debugging with socket session logging.

The Chilkat Socket component provides properties for keeping a session log making it possible to see the exact bytes received and sent on a TCP/IP or SSL connection. To enable session logging, set the KeepSessionLog property = 1. The SessionLogEncoding property controls how binary, non-printable bytes are represented in the log. There are two possible settings: Possible values are "esc" and "hex". The default value is "esc".

When set to "hex", the bytes are encoded as a hexidecimalized string. The "esc" encoding is a C-string like encoding, and is more compact than hex if most of the data to be logged is text. Printable us-ascii chars are unmodified. Common "C" control chars are represented as "\r", "\n", "\t", etc. Non-printable and byte values greater than 0x80 are escaped using a backslash and hex encoding: \xHH. Certain printable chars are backslashed: SPACE, double-quote, single-quote, etc.

Download Chilkat Socket ActiveX

<?php

$socket = new COM("Chilkat.Socket");

$success = $socket->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print 'Failed to unlock component' . "\n";
    exit;
}

//  Enable session logging:
$socket->KeepSessionLog = true;
$socket->SessionLogEncoding = 'esc';

//  To demonstrate session logging, we'll connect to an
//  HTTP server and download the HTTP response header:
$ssl = false;
$maxWaitMillisec = 20000;
$success = $socket->Connect('www.chilkatsoft.com',80,$ssl,$maxWaitMillisec);
if ($success != true) {
    print $socket->lastErrorText() . "\n";
    exit;
}

//  Set maximum timeouts for reading an writing (in millisec)
$socket->MaxReadIdleMs = 10000;
$socket->MaxSendIdleMs = 10000;

//  The socket component includes a BuildHttpGetRequest
//  method for convenience. Build a GET and send it to
//  the web server:

$httpGet = $socket->buildHttpGetRequest('http://www.chilkatsoft.com/');

//  Send it...
$success = $socket->SendString($httpGet);
if ($success != true) {
    print $socket->lastErrorText() . "\n";
    exit;
}

//  Read the response up to the first double CRLF:

$httpHeader = $socket->receiveUntilMatch('\r\n\r\n');
if (is_null($httpHeader)) {
    print $socket->lastErrorText() . "\n";
    exit;
}

//  Close the connection with the server
//  Wait a max of 20 seconds (20000 millsec)
$socket->Close(20000);

//  Display the session log:
print $socket->sessionLog() . "\n";

//  Show the HTTP response header:
print $httpHeader . "\n";
?>