Chilkat Examples

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Perl Examples


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(Perl) SSL Server Example

Demonstrates how to create an SSL socket for accepting connections. This example is *very* simple in that it will create an SSL socket for accepting a single connection. It will read a message from the client, send a reply, and exit.

Chilkat Perl Downloads

Perl Module for Windows, Linux, MAC OS X, Solaris, and FreeBSD

use chilkat();

$listenSslSocket = chilkat::CkSocket->new();

#  Any string automatically begins a fully-functional 30-day trial.

$success = $listenSslSocket->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $listenSslSocket->lastErrorText() . "\r\n";
    exit;
}

#  An SSL server needs a digital certificate.  This example loads it from a PFX file.

#  Create an instance of a certificate store object, load a PFX file,
#  locate the certificate we need, and use it.
#  (a PFX file may contain more than one certificate.)
$certStore = chilkat::CkCertStore->new();
#  The 1st argument is the filename, the 2nd arg is the
#  PFX file's password:
$success = $certStore->LoadPfxFile("chilkat.pfx","test");
if ($success != 1) {
    print $certStore->lastErrorText() . "\r\n";
    exit;
}

#  Find the certificate to be used for SSL:

# cert is a Cert
$cert = $certStore->FindCertBySubject("Chilkat Software, Inc.");
if ($cert eq null ) {
    print $certStore->lastErrorText() . "\r\n";
    exit;
}

#  Use the certificate:
$success = $listenSslSocket->InitSslServer($cert);
if ($success != 1) {

    print $listenSslSocket->lastErrorText() . "\r\n";
    exit;
}

#  Bind and listen on a port:
$myPort = 8123;
#  Allow for a max of 5 queued connect requests.
$backLog = 5;
$success = $listenSslSocket->BindAndListen($myPort,$backLog);
if ($success != 1) {
    print $listenSslSocket->lastErrorText() . "\r\n";
    exit;
}

#  If accepting an SSL/TLS connection, the SSL handshake is part of the connection
#  establishment process. This involves a few back-and-forth messages between the
#  client and server to establish algorithms and a shared key to create the secure
#  channel. The sending and receiving of these messages are governed by the
#  MaxReadIdleMs and MaxSendIdleMs properties. If these properties are set to 0
#  (and this is the default unless changed by your application), then the
#  AcceptNextConnection can hang indefinitely during the SSL handshake process.
#  Make sure these properties are set to appropriate values before calling AcceptNextConnection.

#  Set a 10 second max for waiting to read/write.  This is for the SSL/TLS handshake establishment.
$listenSslSocket->put_MaxReadIdleMs(10000);
$listenSslSocket->put_MaxSendIdleMs(10000);

#  Accept a single client connection and establish the secure SSL/TLS channel:

$maxWaitMillisec = 20000;
# clientSock is a Socket
$clientSock = $listenSslSocket->AcceptNextConnection($maxWaitMillisec);
if ($clientSock eq null ) {
    print $listenSslSocket->lastErrorText() . "\r\n";
    exit;
}

#  The client (in this example) is going to send a "Hello Server! -EOM-"
#  message.  Read it:
$receivedMsg = $clientSock->receiveUntilMatch("-EOM-");
if ($clientSock->get_LastMethodSuccess() != 1) {
    print $clientSock->lastErrorText() . "\r\n";
    exit;
}

print $receivedMsg . "\r\n";

#  Send a "Hello Client! -EOM-" message:
$success = $clientSock->SendString("Hello Client! -EOM-");
if ($success != 1) {
    print $clientSock->lastErrorText() . "\r\n";
    exit;
}

#  Close the connection with the client
#  Wait a max of 20 seconds (20000 millsec)
$success = $clientSock->Close(20000);


 

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