(C) Send UTF-16 on TCP or TLS Socket

See more Socket/SSL/TLS Examples

Demonstrates how to send a string on a connected TCP or SSL/TLS socket such that it is the utf-16 byte representation that is sent.

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#include <C_CkSocket.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkSocket socket;
    BOOL tls;
    int maxWaitMs;
    const char *domainOrIpAddr;
    int port;
    BOOL success;
    HCkStringBuilder sbXml;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    socket = CkSocket_Create();

    tls = FALSE;
    maxWaitMs = 20000;
    domainOrIpAddr = "example.com";
    port = 1234;

    // Connect to the whatever is expecting our connection...
    success = CkSocket_Connect(socket,domainOrIpAddr,port,tls,maxWaitMs);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        return;
    }

    // Let's say we have an XML file saved in the utf-16 byte representation,
    // and we want to send it over the connection using the utf-16 byte representation...

    // First the file into a Chilkat StringBuilder.
    // Tell the LoadFile method that we are reading utf-16 bytes..
    sbXml = CkStringBuilder_Create();
    success = CkStringBuilder_LoadFile(sbXml,"qa_data/xml/myUtf16.xml","utf-16");
    if (success != TRUE) {
        printf("Failed to load utf-16 XML file..\n");
        CkSocket_Dispose(socket);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

    // Tell the socket object that we wish to send the utf-16 byte representation of the string.
    CkSocket_putStringCharset(socket,"utf-16");

    // Send the string as utf-16 bytes.
    success = CkSocket_SendSb(socket,sbXml);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

    // Let's say we wanted to instead send the string as utf-8 bytes.
    // Just tell the socket object...
    CkSocket_putStringCharset(socket,"utf-8");

    // Send the string as utf-8 bytes.
    success = CkSocket_SendSb(socket,sbXml);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

    // If our XML file was utf-8, then just tell the StringBuilder that we're reading utf-8.
    // Once the text is properly contained in the StringBuilder, we can send the contents in any other charset (windows-1252, utf-16, utf-8, etc.) 
    // as long as it make sense (i.e. we obviously can't send Japanese text using a single-byte charset such as Windows-1252).
    success = CkStringBuilder_LoadFile(sbXml,"qa_data/xml/myUtf8.xml","utf-8");
    if (success != TRUE) {
        printf("Failed to load utf-8 XML file..\n");
        CkSocket_Dispose(socket);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

    // Send as utf-16
    CkSocket_putStringCharset(socket,"utf-16");

    // Send the string as utf-16 bytes.
    success = CkSocket_SendSb(socket,sbXml);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

    // ...
    // ...


    CkSocket_Dispose(socket);
    CkStringBuilder_Dispose(sbXml);

    }