Sample code for 30+ languages & platforms
C

Receive Text up to a Delimiter Byte

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveStringUntilByte, which receives bytes until a specific raw byte value is found, then decodes the preceding bytes using StringCharset. The delimiter is excluded from the returned string.

Background. The delimiter search is purely byte-oriented and does not recognize character boundaries. A common delimiter is the linefeed byte (decimal 10).

Chilkat C Downloads

C
#include <C_CkSocket.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkSocket socket;
    BOOL bTls;
    int maxWaitMs;
    const char *command;
    const char *line;

    success = FALSE;

    socket = CkSocket_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 = CkSocket_Connect(socket,"example.com",5000,bTls,maxWaitMs);
    if (success == FALSE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        return;
    }

    //  StringCharset controls the character encoding used when sending and receiving text.
    CkSocket_putStringCharset(socket,"utf-8");
    //  Send a request using a simple application-defined text protocol in which each message ends with a
    //  CRLF.
    command = "STATUS\r\n";
    success = CkSocket_SendString(socket,command);
    if (success == FALSE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        return;
    }

    //  Receive bytes until a specific raw byte value is found, then decode the preceding bytes using
    //  StringCharset.  The delimiter itself is excluded from the returned string.  Here the delimiter is
    //  the linefeed byte (decimal 10).
    line = CkSocket_receiveStringUntilByte(socket,10);
    if (CkSocket_getLastMethodSuccess(socket) == FALSE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkSocket_Dispose(socket);
        return;
    }

    printf("%s\n",line);


    CkSocket_Dispose(socket);

    }