PowerBuilder

Debugging with Socket Session Logging

See more Socket/SSL/TLS Examples

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 = _TRUE_. 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.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Socket
integer li_Ssl
integer li_MaxWaitMillisec
string ls_HttpGet
string ls_HttpHeader

li_Success = 0

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

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

// Enable session logging:
loo_Socket.KeepSessionLog = 1
loo_Socket.SessionLogEncoding = "esc"

// To demonstrate session logging, we'll connect to an
// HTTP server and download the HTTP response header:
li_Ssl = 0
li_MaxWaitMillisec = 20000
li_Success = loo_Socket.Connect("www.chilkatsoft.com",80,li_Ssl,li_MaxWaitMillisec)
if li_Success <> 1 then
    Write-Debug loo_Socket.LastErrorText
    destroy loo_Socket
    return
end if

// Set maximum timeouts for reading an writing (in millisec)
loo_Socket.MaxReadIdleMs = 10000
loo_Socket.MaxSendIdleMs = 10000

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

ls_HttpGet = loo_Socket.BuildHttpGetRequest("http://www.chilkatsoft.com/")

// Send it...
li_Success = loo_Socket.SendString(ls_HttpGet)
if li_Success <> 1 then
    Write-Debug loo_Socket.LastErrorText
    destroy loo_Socket
    return
end if

// Read the response up to the first double CRLF:
ls_HttpHeader = loo_Socket.ReceiveUntilMatch("~r~n~r~n")
if loo_Socket.LastMethodSuccess <> 1 then
    Write-Debug loo_Socket.LastErrorText
    destroy loo_Socket
    return
end if

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

// Display the session log:
Write-Debug loo_Socket.SessionLog

// Show the HTTP response header:
Write-Debug ls_HttpHeader


destroy loo_Socket