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Unicode C

Receive a Bounded String from a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveStringMaxN, which receives and decodes text like ReceiveString but reads at most a given number of input bytes.

Background. The limit is measured in bytes, not Unicode characters, so a byte limit can split a multibyte character or a protocol token. Decoding uses StringCharset.

Chilkat Unicode C Downloads

Unicode C
#include <C_CkSocketW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocketW socket;
    BOOL bTls;
    int maxWaitMs;
    const wchar_t *command;
    const wchar_t *firstChunk;

    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");
    //  Send a request using a simple application-defined text protocol in which each message ends with a
    //  CRLF.
    command = L"STATUS\r\n";
    success = CkSocketW_SendString(socket,command);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkSocketW_Dispose(socket);
        return;
    }

    //  Receive and decode text like ReceiveString, but read at most the given number of input bytes.
    //  The limit is measured in bytes, not Unicode characters.
    firstChunk = CkSocketW_receiveStringMaxN(socket,64);
    if (CkSocketW_getLastMethodSuccess(socket) == FALSE) {
        wprintf(L"%s\n",CkSocketW_lastErrorText(socket));
        CkSocketW_Dispose(socket);
        return;
    }

    wprintf(L"%s\n",firstChunk);


    CkSocketW_Dispose(socket);

    }