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POimplement comparable interface for bidirectional flows
 

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  1. POimplement comparable interface for bidirectional flows
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    <p>this piece of code is supposed to consider flows in both direction as one flow. for example:</p> <pre><code>srcAddr,dstAddr,srcPort,dstPort 192.168.1.65, 217.174.16.1, 123456,80 </code></pre> <p>should be the same as</p> <pre><code>217.174.16.1, 192.168.1.65,80,123456 </code></pre> <p>Another Example:</p> <pre><code>192.168.1.65, 217.174.16.1, 12345, 80, TCP 217.174.16.1, 192.168.1.65, 80, 12345, TCP 192.168.1.65, 217.174.16.1, 12345, 80, TCP 217.174.16.1, 192.168.1.65, 80, 12345, TCP </code></pre> <p>I want to keep i t like this:</p> <pre><code>Flow 1: key---&gt; value (keeps statistics about each packet, like length and timeArrival) [192.168.1.65, 217.174.16.1, 12345, 80] ----&gt; [(outgoing, 1,2)(incoming,3,4)()()...] </code></pre> <p><code>192.168.1.65, 69.100.70.80, 98521, 80 69.100.70.80, 192.168.1.65, 80, 98521 192.168.1.65, 69.100.70.80, 98521, 80 69.100.70.80, 192.168.1.65, 80, 98521 192.168.1.65, 69.100.70.80, 98521, 80 69.100.70.80, 192.168.1.65, 80, 98521</code></p> <p><code>Flow 2: [192.168.1.65, 69.100.70.80, 98521, 80] --&gt; [(outgoing, 1,2)(incoming,3,4)()()...]</code></p> <p>how should i change it in order to get the result? [im using a hashMap and this class of Flows are my keys]</p> <pre><code> package myclassifier; public class Flows implements Comparable&lt;Flows&gt; { String srcAddr = "", dstAddr = "", protocol = ""; int srcPort = 0, dstPort = 0; public Flows(String sIP, String dIP, int sPort, int dPort){ this.srcAddr = sIP; this.dstAddr = dIP; this.srcPort = sPort; this.dstPort = dPort; //this.protocol = protocol; } public Flows(){ } public int compareTo(Flows other) { int res = 1; if(this.equals(other)){ return res=0; }else return 1; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((dstAddr == null) ? 0 : dstAddr.hashCode()); result = prime * result + dstPort; result = prime * result + ((srcAddr == null) ? 0 : srcAddr.hashCode()); result = prime * result + srcPort; return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Flows other = (Flows) obj; if (dstAddr == null) { if (other.dstAddr != null) return false; } else if (!dstAddr.equals(other.dstAddr)) return false; if (dstPort != other.dstPort) return false; if (srcAddr == null) { if (other.srcAddr != null) return false; } else if (!srcAddr.equals(other.srcAddr)) return false; if (srcPort != other.srcPort) return false; return true; } @Override public String toString() { return String.format("[%s, %s, %s, %s, %s]", srcAddr, dstAddr, srcPort, dstPort, protocol); } } </code></pre>
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    1. COWhat happened to all the previous hints you got? I remember Stephen C had a good answer on how to write the unidirectional comparator. What happened to that code? How come you revert back to just `return 1;`, which everyone else has pointed out to be a violation of the contract?
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    2. COno i didnt get the answer. because im not using the compareTo method to comparing in the matter of size. thats why i still have got the problem.
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