Unicode C

Send StringBuilder Contents over a Socket

Demonstrates Socket.SendSb, which encodes the contents of a StringBuilder using StringCharset and sends the resulting bytes.

Background. Text send and receive operations encode and decode bytes using the StringCharset property. For plain ASCII or UTF-8 protocols, setting StringCharset to utf-8 is a safe default.

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Unicode C

#include <C_CkSocketW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocketW socket;
    BOOL bTls;
    int maxWaitMs;
    HCkStringBuilderW sb;

    success = FALSE;

    socket = CkSocketW_Create();

    //  Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
    //  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
    bTls = TRUE;
    maxWaitMs = 5000;
    success = CkSocketW_Connect(socket,L"example.com",5000,bTls,maxWaitMs);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkSocketW_Dispose(socket);
        return;
    }

    //  StringCharset controls the character encoding used when sending and receiving text.
    CkSocketW_putStringCharset(socket,L"utf-8");

    //  Build the text to send in a StringBuilder, then send its contents.
    sb = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sb,L"SET temperature 21\r\n");

    success = CkSocketW_SendSb(socket,sb);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkSocketW_Dispose(socket);
        CkStringBuilderW_Dispose(sb);
        return;
    }

    wprintf(L"Message sent.\n");


    CkSocketW_Dispose(socket);
    CkStringBuilderW_Dispose(sb);

    }