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(Visual FoxPro) Demonstrates KeepSessionLog and SessionLogThe 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 = 1. 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.
LOCAL loSocket LOCAL lnTls LOCAL lnMaxWaitMillisec LOCAL lnSuccess LOCAL loBinData LOCAL lcHttpHeader * This example assumes the Chilkat Socket API to have been previously unlocked. * See Socket Unlock Sample for sample code. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Socket') loSocket = CreateObject('Chilkat.Socket') * Enable session logging: loSocket.KeepSessionLog = 1 loSocket.SessionLogEncoding = "esc" lnTls = 1 lnMaxWaitMillisec = 20000 lnSuccess = loSocket.Connect("www.chilkatsoft.com",443,lnTls,lnMaxWaitMillisec) IF (lnSuccess <> 1) THEN ? loSocket.LastErrorText RELEASE loSocket CANCEL ENDIF * Send a GET start line to the web server.. lnSuccess = loSocket.SendString("GET /abc123.abc123 HTTP/1.1" + CHR(13) + CHR(10)) IF (lnSuccess <> 1) THEN ? loSocket.LastErrorText RELEASE loSocket CANCEL ENDIF * Send some bytes that will cause an error... * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.BinData') loBinData = CreateObject('Chilkat.BinData') loBinData.AppendEncoded("01020304","hex") lnSuccess = loSocket.SendBd(loBinData) * Read the response up to the first double CRLF: lcHttpHeader = loSocket.ReceiveUntilMatch(CHR(13) + CHR(10) + CHR(13) + CHR(10)) IF (loSocket.LastMethodSuccess <> 1) THEN ? loSocket.LastErrorText RELEASE loSocket RELEASE loBinData CANCEL ENDIF * Close the connection with the server * Wait a max of 20 seconds (20000 millsec) loSocket.Close(20000) * Display the session log: ? loSocket.SessionLog * 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 * RELEASE loSocket RELEASE loBinData |
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