Debugging with Socket Session Logging

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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Chilkat.Socket socket = new Chilkat.Socket();

bool success;
success = socket.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show("Failed to unlock component");
    return;
}

//  Enable session logging:
socket.KeepSessionLog = true;
socket.SessionLogEncoding = "esc";

//  To demonstrate session logging, we'll connect to an
//  HTTP server and download the HTTP response header:
bool ssl;
ssl = false;
int maxWaitMillisec;
maxWaitMillisec = 20000;
success = socket.Connect("www.chilkatsoft.com",80,ssl,maxWaitMillisec);
if (success != true) {
    MessageBox.Show(socket.LastErrorText);
    return;
}

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

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

//  Send it...
success = socket.SendString(httpGet);
if (success != true) {
    MessageBox.Show(socket.LastErrorText);
    return;
}

//  Read the response up to the first double CRLF:
string httpHeader;
httpHeader = socket.ReceiveUntilMatch("\r\n\r\n");
if (httpHeader == null ) {
    MessageBox.Show(socket.LastErrorText);
    return;
}

//  Close the connection with the server
//  Wait a max of 20 seconds (20000 millsec)
socket.Close(20000);

//  Display the session log:
textBox1.Text += socket.SessionLog + "\r\n";

//  Show the HTTP response header:
textBox1.Text += httpHeader + "\r\n";