Java

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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Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Socket;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        Socket socket = new 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.
        boolean bTls = true;
        int maxWaitMs = 5000;
        try {
            socket.connect("example.com", 5000, bTls, maxWaitMs);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

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

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

        try {
            socket.sendSb(sb);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Message sent.");
    }
}