FIX: ARQ naming
This commit is contained in:
parent
0d0694dec0
commit
0b8c2c574c
@ -1,138 +0,0 @@
|
||||
/**
|
||||
* @file AQR.java
|
||||
*
|
||||
* @author Christos Choutouridis AEM:8997
|
||||
* @email cchoutou@ece.auth.gr
|
||||
*/
|
||||
package net.hoo2.auth.vmodem;
|
||||
|
||||
/** @name imports */
|
||||
/** @{ */
|
||||
import java.util.*;
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @class AQR
|
||||
*
|
||||
* Class to used for the ACK-NACK sequence
|
||||
*/
|
||||
class AQR {
|
||||
static final int AQ_DURATION_DEFAULT = 240; /**< Default duration for the sequence */
|
||||
static final int AQR_BUFFER_SIZE = 256; /**< AQR buffer size */
|
||||
static final String AQR_BEGIN = "PSTART"; /**< Begin pattern of the response */
|
||||
static final String AQR_END = "PSTOP"; /**< End pattern of the response */
|
||||
|
||||
static final int AQR_SEQUENCE_BEGIN = 31; /**< The response sequence string position */
|
||||
static final int AQR_SEQUENCE_END = 47; /**< The end of response sequence string position */
|
||||
static final int AQR_CRC_BEGIN = 49; /**< The response crc string position */
|
||||
static final int AQR_CRC_END = 52; /**< The end of response crc string position */
|
||||
|
||||
private Com com_; /**< Reference to communication module */
|
||||
private Log log_; /**< Reference to logging module */
|
||||
private Transaction transaction_; /**< A transaction object to used as a buffer for all requests */
|
||||
private int duration_; /**< The desired duration for the session */
|
||||
private byte[] ack_; /**< The desired ACK code for the session */
|
||||
private byte[] nack_; /**< The desired NACK code for the session */
|
||||
|
||||
/**
|
||||
* Basic constructor
|
||||
* @param com The Com module to use
|
||||
* @param log The Log module to use
|
||||
* @param ack The desired ACK code
|
||||
* @param nack The desired NACK code
|
||||
* @param duration The desired duration for the session
|
||||
*/
|
||||
AQR (Com com, Log log, byte[] ack, byte[] nack, int duration) {
|
||||
com_ = com;
|
||||
log_ = log;
|
||||
duration_ = duration;
|
||||
transaction_= new Transaction(null, new byte[AQR_BUFFER_SIZE]);
|
||||
ack_ = ack;
|
||||
nack_ = nack;
|
||||
}
|
||||
|
||||
/**
|
||||
* Functionality to drain the response buffer for the welcome message
|
||||
* from the server
|
||||
* @param ack The ack code that we will use (for printing, not sending)
|
||||
* @param nack The nack code that we will use (for printing, not sending)
|
||||
*/
|
||||
void caption (byte[] ack, byte[] nack) {
|
||||
String line;
|
||||
|
||||
line = "Running AQR with: " + new String(ack) + "/" + new String(nack);
|
||||
log_.write(line, true);
|
||||
|
||||
transaction_ = com_.request (transaction_, null, null, null, false);
|
||||
line = new String(transaction_.getResponse());
|
||||
log_.out(line);
|
||||
}
|
||||
|
||||
/**
|
||||
* Main transaction loop. It send requests to server, get the response
|
||||
* and log the procedure while doing it.
|
||||
*/
|
||||
void run () {
|
||||
long start;
|
||||
long now;
|
||||
long mark =0, delay =0;
|
||||
String line;
|
||||
int bads = 0;
|
||||
boolean good = true;
|
||||
boolean prev = true;
|
||||
|
||||
start = System.currentTimeMillis();
|
||||
do {
|
||||
// Check if the previous transaction was error-free
|
||||
if (good)
|
||||
transaction_ = com_.request(transaction_, ack_, AQR_BEGIN.getBytes(), AQR_END.getBytes(), false);
|
||||
else
|
||||
transaction_ = com_.request(transaction_, nack_, AQR_BEGIN.getBytes(), AQR_END.getBytes(), false);
|
||||
good = (_crc_check(transaction_.response)) ? true : false; // crc check the response
|
||||
bads = (good) ? 0 : bads+1; // count the error strike
|
||||
|
||||
// delay calculation
|
||||
if (prev && !good) mark = transaction_.departure;
|
||||
if (!prev && good) delay = transaction_.arrival - mark;
|
||||
else delay = 0;
|
||||
prev = good;
|
||||
|
||||
line = new String(transaction_.code) + ": "
|
||||
+ new String(transaction_.getResponse())
|
||||
+ " Er: " + bads
|
||||
+ " Tr= " + (transaction_.arrival - transaction_.departure) + " [msec]";
|
||||
if (delay != 0) line += " Tt= " + delay + " [msec]";
|
||||
log_.write(line);
|
||||
now = System.currentTimeMillis();
|
||||
} while (now - start < duration_*1000);
|
||||
}
|
||||
|
||||
/** @name private helper API */
|
||||
/**@{ */
|
||||
|
||||
/**
|
||||
* A CRC check functionality
|
||||
* @param data The data to check for validity
|
||||
* @return The check result
|
||||
*/
|
||||
private boolean _crc_check (byte[] data) {
|
||||
byte[] seq = Arrays.copyOfRange(data, AQR_SEQUENCE_BEGIN, AQR_SEQUENCE_END);
|
||||
int crc = Integer.valueOf(
|
||||
new String(Arrays.copyOfRange(data, AQR_CRC_BEGIN, AQR_CRC_END)));
|
||||
return (crc == _crc(seq)) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* A CRC calculation function. This primitive CRC calculator
|
||||
* does not use any known CRC polynomial. It just uses XOR
|
||||
* @param data Reference to buffer
|
||||
* @return The CRC result
|
||||
*/
|
||||
private int _crc (byte[] data) {
|
||||
int calc =0;
|
||||
for (int i=0 ; i<data.length ; ++i)
|
||||
calc ^= data[i];
|
||||
return calc;
|
||||
}
|
||||
/**@} */
|
||||
}
|
||||
154
src/net/hoo2/auth/vmodem/ARQ.java
Normal file
154
src/net/hoo2/auth/vmodem/ARQ.java
Normal file
@ -0,0 +1,154 @@
|
||||
/**
|
||||
* @file ARQ.java
|
||||
*
|
||||
* @author Christos Choutouridis AEM:8997
|
||||
* @email cchoutou@ece.auth.gr
|
||||
*/
|
||||
package net.hoo2.auth.vmodem;
|
||||
|
||||
/** @name imports */
|
||||
/** @{ */
|
||||
import java.util.*;
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
* @class ARQ
|
||||
*
|
||||
* Class to used for the ACK-NACK sequence
|
||||
*/
|
||||
class ARQ {
|
||||
static final int ARQ_DURATION_DEFAULT = 240; /** Default duration for the sequence */
|
||||
static final int ARQ_BUFFER_SIZE = 256; /** ARQ buffer size */
|
||||
static final String ARQ_BEGIN = "PSTART"; /** Begin pattern of the response */
|
||||
static final String ARQ_END = "PSTOP"; /** End pattern of the response */
|
||||
|
||||
static final int ARQ_SEQUENCE_BEGIN = 31; /** The response sequence string position */
|
||||
static final int ARQ_SEQUENCE_END = 47; /** The end of response sequence string position */
|
||||
static final int ARQ_CRC_BEGIN = 49; /** The response crc string position */
|
||||
static final int ARQ_CRC_END = 52; /** The end of response crc string position */
|
||||
|
||||
private Com com_; /** Reference to communication module */
|
||||
private Log log_; /** Reference to logging module */
|
||||
private Transaction transaction_; /** A transaction object to used as a buffer for all requests */
|
||||
private int duration_; /** The desired duration for the session */
|
||||
private byte[] ack_; /** The desired ACK code for the session */
|
||||
private byte[] nack_; /** The desired NACK code for the session */
|
||||
|
||||
/**
|
||||
* Basic constructor
|
||||
* @param com The Com module to use
|
||||
* @param log The Log module to use
|
||||
* @param ack The desired ACK code
|
||||
* @param nack The desired NACK code
|
||||
* @param duration The desired duration for the session
|
||||
*/
|
||||
ARQ (Com com, Log log, byte[] ack, byte[] nack, int duration) {
|
||||
com_ = com;
|
||||
log_ = log;
|
||||
duration_ = duration;
|
||||
transaction_= new Transaction(null, new byte[ARQ_BUFFER_SIZE]);
|
||||
ack_ = ack;
|
||||
nack_ = nack;
|
||||
}
|
||||
|
||||
/**
|
||||
* Functionality to drain the response buffer for the welcome message
|
||||
* from the server
|
||||
* @param ack The ack code that we will use (for printing, not sending)
|
||||
* @param nack The nack code that we will use (for printing, not sending)
|
||||
*/
|
||||
void caption (byte[] ack, byte[] nack) {
|
||||
String line;
|
||||
|
||||
line = "Running ARQ with: " + new String(ack) + "/" + new String(nack);
|
||||
log_.write(line, true);
|
||||
|
||||
transaction_ = com_.request (transaction_, null, null, null, false);
|
||||
line = new String(transaction_.getResponse());
|
||||
log_.out(line);
|
||||
}
|
||||
|
||||
/**
|
||||
* Main transaction loop. It send requests to server, get the response
|
||||
* and log the procedure while doing it.
|
||||
*/
|
||||
void run () {
|
||||
long start;
|
||||
long now;
|
||||
long mark =0, tr =0, ts =0, tt =0;
|
||||
String line;
|
||||
int errors = 0;
|
||||
boolean good = true;
|
||||
|
||||
start = System.currentTimeMillis();
|
||||
do {
|
||||
// Check if the previous transaction was error-free
|
||||
if (good)
|
||||
transaction_ = com_.request(transaction_, ack_, ARQ_BEGIN.getBytes(), ARQ_END.getBytes(), false);
|
||||
else
|
||||
transaction_ = com_.request(transaction_, nack_, ARQ_BEGIN.getBytes(), ARQ_END.getBytes(), false);
|
||||
good = (_crc_check(transaction_.response)) ? true : false; // crc check the response
|
||||
|
||||
// time calculations
|
||||
tr = transaction_.arrival - transaction_.departure;
|
||||
tt = 0;
|
||||
if ((errors == 0) && good) {
|
||||
tt = ts = tr;
|
||||
}
|
||||
if ((errors == 0) && !good) {
|
||||
mark = transaction_.departure;
|
||||
ts = tr;
|
||||
}
|
||||
if ((errors != 0) && good) {
|
||||
tt = transaction_.arrival - mark;
|
||||
ts += tr;
|
||||
}
|
||||
if ((errors !=0) && !good) {
|
||||
ts += tr;
|
||||
}
|
||||
errors = (good) ? 0 : errors+1; // update the error strike
|
||||
|
||||
line = new String(transaction_.code) + ": "
|
||||
+ new String(transaction_.getResponse())
|
||||
+ " Er: " + errors
|
||||
+ " Tr= " + tr + " [msec]";
|
||||
if (errors !=0)
|
||||
line += " Ts= 0 [msec] Tt= 0 [msec]";
|
||||
else
|
||||
line += " Ts= " + ts + " [msec]" + " Tt= " + tt + " [msec]";
|
||||
|
||||
log_.write(line);
|
||||
now = System.currentTimeMillis();
|
||||
} while (now - start < duration_*1000);
|
||||
}
|
||||
|
||||
/** @name private helper API */
|
||||
/**@{ */
|
||||
|
||||
/**
|
||||
* A CRC check functionality
|
||||
* @param data The data to check for validity
|
||||
* @return The check result
|
||||
*/
|
||||
private boolean _crc_check (byte[] data) {
|
||||
byte[] seq = Arrays.copyOfRange(data, ARQ_SEQUENCE_BEGIN, ARQ_SEQUENCE_END);
|
||||
int crc = Integer.valueOf(
|
||||
new String(Arrays.copyOfRange(data, ARQ_CRC_BEGIN, ARQ_CRC_END))
|
||||
);
|
||||
return (crc == _crc(seq)) ? true : false;
|
||||
}
|
||||
|
||||
/**
|
||||
* A CRC calculation function. This primitive CRC calculator
|
||||
* does not use any known CRC polynomial. It just uses XOR
|
||||
* @param data Reference to buffer
|
||||
* @return The CRC result
|
||||
*/
|
||||
private int _crc (byte[] data) {
|
||||
int calc =0;
|
||||
for (int i=0 ; i<data.length ; ++i)
|
||||
calc ^= data[i];
|
||||
return calc;
|
||||
}
|
||||
/**@} */
|
||||
}
|
||||
@ -73,10 +73,10 @@ public class VirtualModem {
|
||||
+ " <1>: The echo requested code from virtual lab\n"
|
||||
+ " <2>: The time duration of the session [sec]")
|
||||
.build();
|
||||
Option aqr = Option.builder("a")
|
||||
.longOpt("aqr")
|
||||
Option arq = Option.builder("a")
|
||||
.longOpt("arq")
|
||||
.numberOfArgs(3)
|
||||
.desc ("Request aqr sequence where <arg> = <1> <2> <3>\n"
|
||||
.desc ("Request arq sequence where <arg> = <1> <2> <3>\n"
|
||||
+ " <1>: The ACK requested code for virtual lab\n"
|
||||
+ " <2>: The NACK requested code from virtual lab\n"
|
||||
+ " <2>: The time duration for the session [sec]")
|
||||
@ -105,7 +105,7 @@ public class VirtualModem {
|
||||
options.addOption(speed);
|
||||
options.addOption(log);
|
||||
options.addOption(echo);
|
||||
options.addOption(aqr);
|
||||
options.addOption(arq);
|
||||
options.addOption(img);
|
||||
options.addOption(gps);
|
||||
}
|
||||
@ -173,11 +173,11 @@ public class VirtualModem {
|
||||
|
||||
}
|
||||
}
|
||||
else if (line.hasOption("aqr")) {
|
||||
byte[] ack = line.getOptionValues("aqr")[0].getBytes();
|
||||
byte[] nack = line.getOptionValues("aqr")[1].getBytes();
|
||||
AQR a = new AQR(com, log, ack, nack,
|
||||
Integer.valueOf(line.getOptionValues("aqr")[2]));
|
||||
else if (line.hasOption("arq")) {
|
||||
byte[] ack = line.getOptionValues("arq")[0].getBytes();
|
||||
byte[] nack = line.getOptionValues("arq")[1].getBytes();
|
||||
ARQ a = new ARQ(com, log, ack, nack,
|
||||
Integer.valueOf(line.getOptionValues("arq")[2]));
|
||||
if (com.open()) {
|
||||
a.caption(ack, nack);
|
||||
a.run();
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user