PowerBuilder

SSL Server Example

See more Socket/SSL/TLS Examples

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. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_ListenSslSocket
oleobject loo_CertStore
oleobject loo_JsonCN
oleobject loo_Cert
integer li_MyPort
integer li_BackLog
integer li_MaxWaitMillisec
oleobject loo_ClientSock
string ls_ReceivedMsg

li_Success = 0

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

loo_ListenSslSocket = create oleobject
li_rc = loo_ListenSslSocket.ConnectToNewObject("Chilkat.Socket")
if li_rc < 0 then
    destroy loo_ListenSslSocket
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// 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.)
loo_CertStore = create oleobject
li_rc = loo_CertStore.ConnectToNewObject("Chilkat.CertStore")

// The 1st argument is the filename, the 2nd arg is the 
// PFX file's password:
li_Success = loo_CertStore.LoadPfxFile("chilkat.pfx","test")
if li_Success = 0 then
    Write-Debug loo_CertStore.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    return
end if

// Find the certificate to be used for SSL:
loo_JsonCN = create oleobject
li_rc = loo_JsonCN.ConnectToNewObject("Chilkat.JsonObject")

loo_JsonCN.UpdateString("CN","example.com")

loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_CertStore.FindCert(loo_JsonCN,loo_Cert)
if li_Success = 0 then
    Write-Debug loo_CertStore.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    return
end if

// Use the certificate:
li_Success = loo_ListenSslSocket.InitSslServer(loo_Cert)
if li_Success = 0 then
    Write-Debug loo_ListenSslSocket.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    return
end if

// Bind and listen on a port:
li_MyPort = 8123
// Allow for a max of 5 queued connect requests.
li_BackLog = 5
li_Success = loo_ListenSslSocket.BindAndListen(li_MyPort,li_BackLog)
if li_Success = 0 then
    Write-Debug loo_ListenSslSocket.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    return
end if

// 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 
// AcceptNext can hang indefinitely during the SSL handshake process. 
// Make sure these properties are set to appropriate values before calling AcceptNext.

// Set a 10 second max for waiting to read/write.  This is for the SSL/TLS handshake establishment.
loo_ListenSslSocket.MaxReadIdleMs = 10000
loo_ListenSslSocket.MaxSendIdleMs = 10000

// Accept a single client connection and establish the secure SSL/TLS channel:
li_MaxWaitMillisec = 20000
loo_ClientSock = create oleobject
li_rc = loo_ClientSock.ConnectToNewObject("Chilkat.Socket")

li_Success = loo_ListenSslSocket.AcceptNext(li_MaxWaitMillisec,loo_ClientSock)
if li_Success = 0 then
    Write-Debug loo_ListenSslSocket.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    destroy loo_ClientSock
    return
end if

// The client (in this example) is going to send a "Hello Server! -EOM-" 
// message.  Read it:
ls_ReceivedMsg = loo_ClientSock.ReceiveUntilMatch("-EOM-")
if loo_ClientSock.LastMethodSuccess = 0 then
    Write-Debug loo_ClientSock.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    destroy loo_ClientSock
    return
end if

Write-Debug ls_ReceivedMsg

// Send a "Hello Client! -EOM-" message:
li_Success = loo_ClientSock.SendString("Hello Client! -EOM-")
if li_Success = 0 then
    Write-Debug loo_ClientSock.LastErrorText
    destroy loo_ListenSslSocket
    destroy loo_CertStore
    destroy loo_JsonCN
    destroy loo_Cert
    destroy loo_ClientSock
    return
end if

// Close the connection with the client
// Wait a max of 20 seconds (20000 millsec)
li_Success = loo_ClientSock.Close(20000)


destroy loo_ListenSslSocket
destroy loo_CertStore
destroy loo_JsonCN
destroy loo_Cert
destroy loo_ClientSock