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C++

Receive Text up to a Matching Sequence

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveUntilMatch, which receives bytes until an exact byte sequence is found. The match string is encoded using StringCharset and compared byte-for-byte.

Background. The comparison is case-sensitive with no Unicode normalization. This is useful for reading a message that ends with an application-defined marker delimiting the end of a response.

Chilkat C++ Downloads

C++
#include <CkSocket.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkSocket socket;

    //  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.
    bool bTls = true;
    int maxWaitMs = 5000;
    success = socket.Connect("example.com",5000,bTls,maxWaitMs);
    if (success == false) {
        std::cout << socket.lastErrorText() << "\r\n";
        return;
    }

    //  StringCharset controls the character encoding used when sending and receiving text.
    socket.put_StringCharset("utf-8");
    //  Send a request using a simple application-defined text protocol in which each message ends with a
    //  CRLF.
    const char *command = "STATUS\r\n";
    success = socket.SendString(command);
    if (success == false) {
        std::cout << socket.lastErrorText() << "\r\n";
        return;
    }

    //  Receive bytes until an exact byte sequence is found.  The match string is encoded using
    //  StringCharset and compared byte-for-byte.  Here the server marks the end of its response with an
    //  application-defined marker.
    const char *response = socket.receiveUntilMatch("<EOM>");
    if (socket.get_LastMethodSuccess() == false) {
        std::cout << socket.lastErrorText() << "\r\n";
        return;
    }

    std::cout << response << "\r\n";
    }