66 lines
2 KiB
Java
66 lines
2 KiB
Java
|
package transport;
|
||
|
|
|
||
|
|
public abstract class Receiver extends Transport {
|
||
|
|
private boolean writing_allowed = true;
|
||
|
|
private byte[] rcv_buffer = new byte[1024];
|
||
|
|
private int rcv_offset;
|
||
|
|
private int rcv_length;
|
||
|
|
|
||
|
|
public Receiver() {
|
||
|
|
}
|
||
|
|
|
||
|
|
public final synchronized int receive(byte[] var1, int var2, int var3) throws InterruptedException {
|
||
|
|
while(this.rcv_length == 0) {
|
||
|
|
this.wait();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.rcv_length < 0) {
|
||
|
|
return this.rcv_length;
|
||
|
|
} else if (this.rcv_length > var3) {
|
||
|
|
for(int var4 = 0; var4 < var3; ++var4) {
|
||
|
|
var1[var2 + var4] = this.rcv_buffer[this.rcv_offset + var4];
|
||
|
|
}
|
||
|
|
|
||
|
|
this.rcv_offset += var3;
|
||
|
|
this.rcv_length -= var3;
|
||
|
|
this.notifyAll();
|
||
|
|
return var3;
|
||
|
|
} else {
|
||
|
|
var3 = this.rcv_length;
|
||
|
|
|
||
|
|
do {
|
||
|
|
--this.rcv_length;
|
||
|
|
var1[var2 + this.rcv_length] = this.rcv_buffer[this.rcv_offset + this.rcv_length];
|
||
|
|
} while(this.rcv_length > 0);
|
||
|
|
|
||
|
|
this.notify();
|
||
|
|
return var3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protected final void deliver(byte[] bytes, int offset, int length) {
|
||
|
|
if (length == 0) {
|
||
|
|
System.err.println("Receiver: error: deliver was called with zero length.");
|
||
|
|
} else {
|
||
|
|
synchronized(this) {
|
||
|
|
try {
|
||
|
|
while(this.rcv_length != 0) {
|
||
|
|
this.wait();
|
||
|
|
}
|
||
|
|
|
||
|
|
for(int i = 0; i < length; ++i) {
|
||
|
|
this.rcv_buffer[i] = bytes[i + offset];
|
||
|
|
}
|
||
|
|
|
||
|
|
this.rcv_offset = 0;
|
||
|
|
this.rcv_length = length;
|
||
|
|
this.notifyAll();
|
||
|
|
} catch (InterruptedException ignored) {
|
||
|
|
System.err.println("Receiver.deliver: warning: interrupted while delivering to application. Some data might be lost.");
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|