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Debugging with Socket Session Logging

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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.

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Local $bSuccess = False

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

$oSocket = ObjCreate("Chilkat.Socket")

; Enable session logging:
$oSocket.KeepSessionLog = True
$oSocket.SessionLogEncoding = "esc"

; To demonstrate session logging, we'll connect to an
; HTTP server and download the HTTP response header:
Local $bSsl = False
Local $iMaxWaitMillisec = 20000
$bSuccess = $oSocket.Connect("www.chilkatsoft.com",80,$bSsl,$iMaxWaitMillisec)
If ($bSuccess <> True) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

; Set maximum timeouts for reading an writing (in millisec)
$oSocket.MaxReadIdleMs = 10000
$oSocket.MaxSendIdleMs = 10000

; The socket component includes a BuildHttpGetRequest
; method for convenience. Build a GET and send it to 
; the web server:
Local $sHttpGet
$sHttpGet = $oSocket.BuildHttpGetRequest("http://www.chilkatsoft.com/")

; Send it...
$bSuccess = $oSocket.SendString($sHttpGet)
If ($bSuccess <> True) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

; Read the response up to the first double CRLF:
Local $sHttpHeader = $oSocket.ReceiveUntilMatch(@CRLF & @CRLF)
If ($oSocket.LastMethodSuccess <> True) Then
    ConsoleWrite($oSocket.LastErrorText & @CRLF)
    Exit
EndIf

; Close the connection with the server
; Wait a max of 20 seconds (20000 millsec)
$bSuccess = $oSocket.Close(20000)

; Display the session log:
ConsoleWrite($oSocket.SessionLog & @CRLF)

; Show the HTTP response header:
ConsoleWrite($sHttpHeader & @CRLF)