Visual FoxPro

SSL Client Certificate

See more Socket/SSL/TLS Examples

Demonstrates how to connect to an SSL server using a client-side certificate, send a simple message, receive a simple response, and disconnect. Visual FoxPro

LOCAL lnSuccess
LOCAL loSocket
LOCAL loCertStore
LOCAL loJsonCN
LOCAL loCert
LOCAL lnSsl
LOCAL lnMaxWaitMillisec
LOCAL lcSslServerHost
LOCAL lnSslServerPort
LOCAL lcReceivedMsg

lnSuccess = 0

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

loSocket = CreateObject('Chilkat.Socket')

* Create an instance of a certificate store object, load a PFX file,
* locate the certificate we need, and use it for signing.
* (a PFX file may contain more than one certificate.)
loCertStore = CreateObject('Chilkat.CertStore')
* The 1st argument is the filename, the 2nd arg is the 
* PFX file's password:
lnSuccess = loCertStore.LoadPfxFile("chilkat_secret.pfx","secret")
IF (lnSuccess <> 1) THEN
    ? loCertStore.LastErrorText
    RELEASE loSocket
    RELEASE loCertStore
    CANCEL
ENDIF

* Find the certificate by the subject common name:
loJsonCN = CreateObject('Chilkat.JsonObject')
loJsonCN.UpdateString("CN","cert common name")

loCert = CreateObject('Chilkat.Cert')
lnSuccess = loCertStore.FindCert(loJsonCN,loCert)
IF (lnSuccess = 0) THEN
    ? loCertStore.LastErrorText
    RELEASE loSocket
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
ENDIF

lnSuccess = loSocket.SetSslClientCert(loCert)

lnSsl = 1
lnMaxWaitMillisec = 20000

* The SSL server hostname may be an IP address, a domain name,
* or "localhost".  You'll need to change this:

lcSslServerHost = "123.123.88.88"
lnSslServerPort = 8123

* Connect to the SSL server:
lnSuccess = loSocket.Connect(lcSslServerHost,lnSslServerPort,lnSsl,lnMaxWaitMillisec)
IF (lnSuccess <> 1) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
ENDIF

* Set maximum timeouts for reading an writing (in millisec)
loSocket.MaxReadIdleMs = 20000
loSocket.MaxSendIdleMs = 20000

* Send a "Hello Server! -EOM-" message:
lnSuccess = loSocket.SendString("Hello Server! -EOM-")
IF (lnSuccess <> 1) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
ENDIF

* The server (in this example) is going to send a "Hello Client! -EOM-" 
* message.  Read it:
lcReceivedMsg = loSocket.ReceiveUntilMatch("-EOM-")
IF (loSocket.LastMethodSuccess <> 1) THEN
    ? loSocket.LastErrorText
    RELEASE loSocket
    RELEASE loCertStore
    RELEASE loJsonCN
    RELEASE loCert
    CANCEL
ENDIF

* Close the connection with the server
* Wait a max of 20 seconds (20000 millsec)
lnSuccess = loSocket.Close(20000)

? lcReceivedMsg

RELEASE loSocket
RELEASE loCertStore
RELEASE loJsonCN
RELEASE loCert