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(Unicode C) Debugging with Socket Session LoggingDebugging 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.
#include <C_CkSocketW.h> void ChilkatSample(void) { HCkSocketW socket; BOOL ssl; int maxWaitMillisec; BOOL success; const wchar_t *httpGet; const wchar_t *httpHeader; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. socket = CkSocketW_Create(); // Enable session logging: CkSocketW_putKeepSessionLog(socket,TRUE); CkSocketW_putSessionLogEncoding(socket,L"esc"); // To demonstrate session logging, we'll connect to an // HTTP server and download the HTTP response header: ssl = FALSE; maxWaitMillisec = 20000; success = CkSocketW_Connect(socket,L"www.chilkatsoft.com",80,ssl,maxWaitMillisec); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } // Set maximum timeouts for reading an writing (in millisec) CkSocketW_putMaxReadIdleMs(socket,10000); CkSocketW_putMaxSendIdleMs(socket,10000); // The socket component includes a BuildHttpGetRequest // method for convenience. Build a GET and send it to // the web server: httpGet = CkSocketW_buildHttpGetRequest(socket,L"http://www.chilkatsoft.com/"); // Send it... success = CkSocketW_SendString(socket,httpGet); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } // Read the response up to the first double CRLF: httpHeader = CkSocketW_receiveUntilMatch(socket,L"\r\n\r\n"); if (CkSocketW_getLastMethodSuccess(socket) != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } // Close the connection with the server // Wait a max of 20 seconds (20000 millsec) success = CkSocketW_Close(socket,20000); // Display the session log: wprintf(L"%s\n",CkSocketW_sessionLog(socket)); // Show the HTTP response header: wprintf(L"%s\n",httpHeader); CkSocketW_Dispose(socket); } |
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