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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* File : LlcpConnectionLessSocket.java
* Original-Author : Trusted Logic S.A. (Daniel Tomas)
* Created : 18-02-2010
*/
package com.trustedlogic.trustednfc.android;
import java.io.IOException;
import com.trustedlogic.trustednfc.android.internal.ErrorCodes;
import android.os.RemoteException;
import android.util.Log;
/**
* LlcpConnectionlessSocket represents a LLCP Connectionless object to be used
* in a connectionless communication
*
* @since AA02.01
* @hide
*/
public class LlcpConnectionlessSocket {
private static final String TAG = "LlcpConnectionlessSocket";
/**
* The handle returned by the NFC service and used to identify the LLCP connectionless socket in
* every call of this class.
*
* @hide
*/
protected int mHandle;
/**
* The entry point for LLCP Connectionless socket operations.
*
* @hide
*/
protected ILlcpConnectionlessSocket mService;
/**
* Internal constructor for the LlcpConnectionlessSocket class.
*
* @param service The entry point to the Nfc Service for LLCP Connectionless socket class.
* @param handle The handle returned by the NFC service and used to identify
* the socket in subsequent calls.
* @hide
*/
LlcpConnectionlessSocket(ILlcpConnectionlessSocket service, int handle) {
this.mService = service;
this.mHandle = handle;
}
/**
* Send data to a specific LLCP Connectionless client
*
* @param packet Service Access Point number related to a LLCP
* Connectionless client and a data buffer to send
* @throws IOException if the LLCP link has been lost or deactivated.
* @since AA02.01
*/
public void sendTo(LlcpPacket packet) throws IOException {
try {
int result = mService.sendTo(mHandle, packet);
// Handle potential errors
if (ErrorCodes.isError(result)) {
throw new IOException();
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException in sendTo(): ", e);
}
}
/**
* Receive data from a LLCP Connectionless client
*
* @return data data received from a specific LLCP Connectionless client
* @throws IOException if the LLCP link has been lost or deactivated.
* @see LlcpPacket
* @since AA02.01
*/
public LlcpPacket receiveFrom() throws IOException {
try {
LlcpPacket packet = mService.receiveFrom(mHandle);
if (packet != null) {
return packet;
}else{
// Handle potential errors
throw new IOException();
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException in receiveFrom(): ", e);
}
return null;
}
/**
* Close the created Connectionless socket.
*
* @since AA02.01
*/
public void close() {
try {
mService.close(mHandle);
} catch (RemoteException e) {
Log.e(TAG, "RemoteException in close(): ", e);
}
}
/**
* Returns the local Service Access Point number of the socket
*
* @return sap
* @since AA02.01
*/
public int getSap() {
int sap = 0;
try {
sap = mService.getSap(mHandle);
} catch (RemoteException e) {
e.printStackTrace();
}
return sap;
}
}
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