From 6f101ab9ad38434a0d1109e8cc95d86ccbacc960 Mon Sep 17 00:00:00 2001
From: brutzman <brutzman@nps.edu>
Date: Sun, 30 Apr 2023 08:06:42 -0700
Subject: [PATCH] variable rename for clarity
---
examples/src/UdpExamples/UnicastUdpSender.java | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/examples/src/UdpExamples/UnicastUdpSender.java b/examples/src/UdpExamples/UnicastUdpSender.java
index 27ff85fb83..937dda0af6 100644
--- a/examples/src/UdpExamples/UnicastUdpSender.java
+++ b/examples/src/UdpExamples/UnicastUdpSender.java
@@ -45,7 +45,7 @@ public class UnicastUdpSender
DatagramSocket udpSocket = null;
DataOutputStream dos = null;
int packetID = 0; // counter variable to send in packet
- float value = -1.0f; // unreachable value is good sentinel to ensure expected changes occur
+ float countdown = -1.0f; // unreachable value is good sentinel to ensure expected changes occur
String message = MY_NAME + " says Hello MV3500"; // no really
String padding = new String();
@@ -85,29 +85,29 @@ public class UnicastUdpSender
for (int index = 1; index <= TOTAL_PACKETS_TO_SEND; index++) // avoid infinite send loops in code, they can be hard to kill!
{
packetID++; // increment counter, prefer using explicit value to index
- value = TOTAL_PACKETS_TO_SEND - packetID; // countdown
+ countdown = TOTAL_PACKETS_TO_SEND - packetID; // countdown from goal total
boolean isPacketIdEvenParity = ((packetID % 2) == 0); // % is modulo operator; result 0 is even parity, 1 is odd parity
// values of interest follow. order and types of what was sent must match what you are reading!
dos.writeInt (packetID);
- dos.writeFloat (value);
+ dos.writeFloat (countdown);
dos.writeUTF (message); // string value with guaranteed encoding, matches UTF-8 is 8 bit
dos.writeBoolean(isPacketIdEvenParity);
- dos.flush(); // sends DataOutputStream to ByteArrayOutputStream
+ dos.flush(); // sends DataOutputStream to ByteArrayOutputStream, clearing the buffer
byteArray = baos.toByteArray(); // OK so go get the flushed result...
datagramPacket.setData(byteArray); // and put it in the packet...
udpSocket.send(datagramPacket); // and send it away. boom gone, nonblocking.
// System.out.println("udpSocket output port=" + udpSocket.getLocalPort()); // diagnostic tells what port was chosen by system
if (isPacketIdEvenParity)
- padding = " ";
- else padding = "";
+ padding = " "; // single blank character as a string of length 1
+ else padding = ""; // empty string
Thread.sleep(100); // Send packets at rate of one per second
System.out.println("[" + UnicastUdpSender.class.getName() + "] " + MY_NAME + " " + sourceAddress +
" port=" + UDP_PORT +
- " has sent values (" + packetID + "," + value + ",\"" + message + "\"," + isPacketIdEvenParity +
+ " has sent values (" + packetID + "," + countdown + ",\"" + message + "\"," + isPacketIdEvenParity +
")" + padding + " as packet #" + index + " of " + TOTAL_PACKETS_TO_SEND);
baos.reset(); // clear the output stream after sending
} // end for loop
--
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