FlightSim-Streaming/XPlaneConnectCSP
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Updated Java client to conform to new API.

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- Now uses a single socket.
 - Constructor parameter reordered to match C client.
 - Defaults to an OS assigned port instead of 49008.
This commit is contained in:
Jason Watkins
2015-04-17 09:58:01 -07:00
parent 5ee49c7d81
commit ccc87f06f2
2 changed files with 39 additions and 53 deletions
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70
Java/src/XPlaneConnect.java
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@@ -44,8 +44,7 @@ import java.util.Arrays;
public class XPlaneConnect implements AutoCloseable
{
private static int clientNum;
private DatagramSocket outSocket;
private DatagramSocket inSocket;
private DatagramSocket socket;
private InetAddress xplaneAddr;
private int xplanePort;
@@ -54,7 +53,7 @@ public class XPlaneConnect implements AutoCloseable
*
* @return The incoming port number.
*/
public int getRecvPort() { return inSocket.getLocalPort(); }
public int getRecvPort() { return socket.getLocalPort(); }
/**
* Gets the port on which the client sends data to X-Plane.
@@ -116,46 +115,44 @@ public class XPlaneConnect implements AutoCloseable
*/
public XPlaneConnect(int timeout) throws SocketException
{
this.inSocket = new DatagramSocket(49008);
this.outSocket = new DatagramSocket(50000 + ++clientNum);
this.socket = new DatagramSocket(0);
this.xplaneAddr = InetAddress.getLoopbackAddress();
this.xplanePort = 49009;
this.inSocket.setSoTimeout(timeout);
this.socket.setSoTimeout(timeout);
}
/**
* Initializes a new instance of the {@code XPlaneConnect} class using the specified ports and X-Plane host.
*
* @param port The port on which the X-Plane Connect plugin is sending data.
* @param xplaneHost The network host on which X-Plane is running.
* @param xplanePort The port on which the X-Plane Connect plugin is listening.
* @param port The port on which the X-Plane Connect plugin is sending data.
* @param xpHost The network host on which X-Plane is running.
* @param xpPort The port on which the X-Plane Connect plugin is listening.
* @throws java.net.SocketException If this instance is unable to bind to the specified port.
* @throws java.net.UnknownHostException If the specified hostname can not be resolved.
*/
public XPlaneConnect(int port, String xplaneHost, int xplanePort)
public XPlaneConnect(String xpHost, int xpPort, int port)
throws java.net.SocketException, java.net.UnknownHostException
{
this(port, xplaneHost, xplanePort, 100);
this(xpHost, xpPort, port, 100);
}
/**
* Initializes a new instance of the {@code XPlaneConnect} class using the specified ports, hostname, and timeout.
*
* @param port The port on which the X-Plane Connect plugin is sending data.
* @param xplaneHost The network host on which X-Plane is running.
* @param xplanePort The port on which the X-Plane Connect plugin is listening.
* @param xpHost The network host on which X-Plane is running.
* @param xpPort The port on which the X-Plane Connect plugin is listening.
* @param timeout The time, in milliseconds, after which read attempts will timeout.
* @throws java.net.SocketException If this instance is unable to bind to the specified port.
* @throws java.net.UnknownHostException If the specified hostname can not be resolved.
*/
public XPlaneConnect(int port, String xplaneHost, int xplanePort, int timeout)
public XPlaneConnect(String xpHost, int xpPort, int port, int timeout)
throws java.net.SocketException, java.net.UnknownHostException
{
this.inSocket = new DatagramSocket(port);
this.outSocket = new DatagramSocket(50000 + ++clientNum);
this.xplaneAddr = InetAddress.getByName(xplaneHost);
this.xplanePort = xplanePort;
this.inSocket.setSoTimeout(timeout);
this.socket = new DatagramSocket(port);
this.xplaneAddr = InetAddress.getByName(xpHost);
this.xplanePort = xpPort;
this.socket.setSoTimeout(timeout);
}
/**
@@ -163,15 +160,10 @@ public class XPlaneConnect implements AutoCloseable
*/
public void close()
{
if(inSocket != null)
if(socket != null)
{
inSocket.close();
inSocket = null;
}
if(outSocket != null)
{
outSocket.close();
outSocket = null;
socket.close();
socket = null;
}
}
@@ -181,13 +173,13 @@ public class XPlaneConnect implements AutoCloseable
* @return The data send from X-Plane.
* @throws IOException If the read operation fails
*/
private byte[] readUDP() throws IOException //TODO: Store data in a class level buffer to account for partial messages
private byte[] readUDP() throws IOException
{
byte[] buffer = new byte[2048];
DatagramPacket packet = new DatagramPacket(buffer, buffer.length);
try
{
inSocket.receive(packet);
socket.receive(packet);
return Arrays.copyOf(buffer, buffer[4]);
}
catch (SocketTimeoutException ex)
@@ -212,7 +204,7 @@ public class XPlaneConnect implements AutoCloseable
buffer[4] = (byte)buffer.length;
DatagramPacket packet = new DatagramPacket(buffer, buffer.length, xplaneAddr, xplanePort);
outSocket.send(packet);
socket.send(packet);
}
/**
@@ -672,12 +664,12 @@ public class XPlaneConnect implements AutoCloseable
/**
* Sets the port on which the client will receive data from X-Plane.
*
* @param recvPort The new incoming port number.
* @param port The new incoming port number.
* @throws IOException If the command cannnot be sent.
*/
public void setCONN(int recvPort) throws IOException
public void setCONN(int port) throws IOException
{
if(recvPort < 0 || recvPort >= 0xFFFF)
if(port < 0 || port >= 0xFFFF)
{
throw new IllegalArgumentException("Invalid port (must be non-negative and less than 65536).");
}
@@ -685,14 +677,14 @@ public class XPlaneConnect implements AutoCloseable
ByteArrayOutputStream os = new ByteArrayOutputStream();
os.write("CONN".getBytes(StandardCharsets.UTF_8));
os.write(0xFF); //Placeholder for message length
os.write((byte) recvPort);
os.write((byte) (recvPort >> 8));
os.write((byte) port);
os.write((byte) (port >> 8));
sendUDP(os.toByteArray());
int soTimeout = inSocket.getSoTimeout();
inSocket.close();
inSocket = new DatagramSocket(recvPort);
inSocket.setSoTimeout(soTimeout);
int soTimeout = socket.getSoTimeout();
socket.close();
socket = new DatagramSocket(port);
socket.setSoTimeout(soTimeout);
readUDP(); // Try to read response
}
}