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(Android™) TCP Socket Send Byte and Receive ByteDemonstrates the Chilkat Socket ReceiveByte and SendByte method.
// 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); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkSocket sock = new CkSocket(); // -------------------------------------------------------------------- // This example uses the public TCP echo service at https://tcpbin.com/ // -------------------------------------------------------------------- boolean useTls = false; int port = 4242; int maxWaitMs = 5000; boolean success = sock.Connect("tcpbin.com",port,useTls,maxWaitMs); if (success == false) { Log.i(TAG, sock.lastErrorText()); return; } // Wait a max of 2 seconds for a response.. sock.put_MaxReadIdleMs(2000); // Send a byte. sock.SendByte(96); // The tcpbin.com echo server only echoes after receiving an LF (linefeed char) sock.SendByte(10); // The echo server will echo back whatever is sent to it. // We should be able to read the same byte back.. // After successfully reading, the byte value is available in the ReceivedInt property. boolean treatAsUnsignedInt = true; success = sock.ReceiveByte(treatAsUnsignedInt); if (success == false) { Log.i(TAG, sock.lastErrorText()); return; } // Let's look at the value of the byte received. It should be 96. Log.i(TAG, String.valueOf(sock.get_ReceivedInt())); // The echo server also echoed the LF back. success = sock.ReceiveByte(treatAsUnsignedInt); // Assuming success.. // Should be decimal 10. Log.i(TAG, String.valueOf(sock.get_ReceivedInt())); } 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." } } |
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