Unicode C

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.

Unicode C

#include <C_CkSocketW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocketW socket;
    BOOL ssl;
    int maxWaitMillisec;
    const wchar_t *httpGet;
    const wchar_t *httpHeader;

    success = FALSE;

    // 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);

    }