Tcl
Tcl
Demonstrates KeepSessionLog and SessionLog
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/TLS 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.
Chilkat Tcl Downloads
load ./chilkat.dll
set success 0
# This example assumes the Chilkat Socket API to have been previously unlocked.
# See Socket Unlock Sample for sample code.
set socket [new_CkSocket]
# Enable session logging:
CkSocket_put_KeepSessionLog $socket 1
CkSocket_put_SessionLogEncoding $socket "esc"
set tls 1
set maxWaitMillisec 20000
set success [CkSocket_Connect $socket "www.chilkatsoft.com" 443 $tls $maxWaitMillisec]
if {$success != 1} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
exit
}
# Send a GET start line to the web server..
set success [CkSocket_SendString $socket "GET /abc123.abc123 HTTP/1.1\r\n"]
if {$success != 1} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
exit
}
# Send some bytes that will cause an error...
set binData [new_CkBinData]
CkBinData_AppendEncoded $binData "01020304" "hex"
set success [CkSocket_SendBd $socket $binData]
# Read the response up to the first double CRLF:
set httpHeader [CkSocket_receiveUntilMatch $socket "\r\n\r\n"]
if {[CkSocket_get_LastMethodSuccess $socket] != 1} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
delete_CkBinData $binData
exit
}
# Close the connection with the server
# Wait a max of 20 seconds (20000 millsec)
CkSocket_Close $socket 20000
# Display the session log:
puts [CkSocket_sessionLog $socket]
# The Session log will show the exact bytes sent and received.
# In this case, the session log shows:
# SendString: GET\x20/abc123.abc123\x20HTTP/1.1\r\n
#
# SendBytes: \x01\x02\x03\x04
# ReceiveUntilMatch: HTTP/1.1\x20400\x20Bad\x20Request\r\n
# Content-Type:\x20text/html;\x20charset=us-ascii\r\n
# Server:\x20Microsoft-HTTPAPI/2.0\r\n
# Date:\x20Thu,\x2027\x20Oct\x202016\x2013:16:02\x20GMT\r\n
# Connection:\x20close\r\n
# Content-Length:\x20339\r\n
# \r\n
# <!DOCTYPE\x20HTML\x20PUBLIC\x20\"-//W3C//DTD\x20HTML\x204.01//EN\"\"http://www.w
# 3.org/TR/html4/strict.dtd\">\r\n
# <HTML><HEAD><TITLE>Bad\x20Request</TITLE>\r\n
# <META\x20HTTP-EQUIV=\"Content-Type\"\x20Content=\"text/html;\x20charset=us-ascii
# \"></HEAD>\r\n
# <BODY><h2>Bad\x20Request\x20-\x20Invalid\x20Header</h2>\r\n
# <hr><p>HTTP\x20Error\x20400.\x20The\x20request\x20has\x20an\x20invalid\x20header
# \x20name.</p>\r\n
# </BODY></HTML>\r\n
#
delete_CkSocket $socket
delete_CkBinData $binData