Asynchronous SSL Client Example

Demonstrates how to connect to an SSL server, send a simple message, receive a simple response, and disconnect. This example uses the asynchronous methods to connect, send, and receive.

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MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

// Needs #include <CkSocket.h>

    CkString strOut;

    CkSocket socket;

    bool success;
    success = socket.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        strOut.append("Failed to unlock component\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    bool ssl;
    ssl = true;
    long maxWaitMillisec;
    maxWaitMillisec = 20000;

    //  The SSL server hostname may be an IP address, a domain name,
    //  or "localhost".  You'll need to change this:
    const char * sslServerHost;
    sslServerHost = "123.123.88.88";
    long sslServerPort;
    sslServerPort = 8123;

    //  Connect to the SSL server asynchronously in a background thread.
    success = socket.AsyncConnectStart(sslServerHost,sslServerPort,ssl,maxWaitMillisec);
    if (success != true) {
        strOut.append(socket.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Wait for the socket to become connected...
    while ((socket.get_AsyncConnectFinished() != true)) {
        //  Sleep 1 second.
        socket.SleepMs(1000);
    }

    //  Did the connect fail?
    if (socket.get_AsyncConnectSuccess() != true) {
        strOut.append(socket.get_AsyncConnectLog());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Set maximum timeouts for reading an writing (in millisec)
    socket.put_MaxReadIdleMs(20000);
    socket.put_MaxSendIdleMs(20000);

    //  Send a "Hello Server! -EOM-" message:
    success = socket.AsyncSendString("Hello Server! -EOM-");
    if (success != true) {
        strOut.append(socket.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Wait for the send to finish
    while ((socket.get_AsyncSendFinished() != true)) {
        //  Sleep 1 second.
        socket.SleepMs(1000);
    }

    //  Did the send fail?
    if (socket.get_AsyncSendSuccess() != true) {
        strOut.append(socket.get_AsyncSendLog());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  The server (in this example) is going to send a "Hello Client! -EOM-"
    //  message.  Begin reading asynchronously in a background thread:
    success = socket.AsyncReceiveUntilMatch("-EOM-");
    if (success != true) {
        strOut.append(socket.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Wait for the background read to finish
    while ((socket.get_AsyncReceiveFinished() != true)) {
        //  Sleep 1 second.
        socket.SleepMs(1000);
    }

    //  Did the receive fail?
    if (socket.get_AsyncReceiveSuccess() != true) {
        strOut.append(socket.get_AsyncReceiveLog());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Display the received message:
    strOut.append(socket.get_AsyncReceivedString());
    strOut.append("\r\n");

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


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());