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Android™

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 Android™ Downloads

Android™
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    CkSocket socket = new CkSocket();

    //  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;
    success = socket.Connect("example.com",5000,bTls,maxWaitMs);
    if (success == false) {
        Log.i(TAG, socket.lastErrorText());
        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.
    String command = "STATUS\r\n";
    success = socket.SendString(command);
    if (success == false) {
        Log.i(TAG, socket.lastErrorText());
        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.
    String response = socket.receiveUntilMatch("<EOM>");
    if (socket.get_LastMethodSuccess() == false) {
        Log.i(TAG, socket.lastErrorText());
        return;
        }

    Log.i(TAG, response);

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}