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Custom header interface #4

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19237c6
Update index.html
amandoee Jun 24, 2024
7c0c4ee
Update app.js
amandoee Jun 24, 2024
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78 changes: 40 additions & 38 deletions app/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,45 +3,47 @@
var ipfCalc = angular.module('ipfCalc', []);

ipfCalc.controller('CalculateController', function($scope) {
//initial values
$scope.fragments = [];
$scope.data = {
dataSize: 4000,
mtuSize: 1500,
headerSize: 20
};
// Initial values
$scope.fragments = [];
$scope.data = {
dataSize: 4000,
mtuSize: 1500,
headerSize: 20
};

//when you click "Calculate"
$scope.calculate = function(data){
//Initializing the data...
$scope.fragments = [];
var headerSize = data.headerSize;
var remaining = data.dataSize - headerSize;
var maxSize = data.mtuSize - headerSize;
var maxPayload = maxSize - (maxSize % 8);
var flag = 1;
var offset = 0;
// When you click "Calculate"
$scope.calculate = function(data) {
// Initializing the data...
$scope.fragments = [];
var headerSize = data.headerSize;
var remaining = data.dataSize; // Initial payload size
var maxSize = data.mtuSize - headerSize; // Maximum fragment size excluding header
var maxPayload = maxSize - (maxSize % 8); // Ensuring max payload size is a multiple of 8
var flag = 1;
var offset = 0;

//While data doesn't fit the MTU...
while(remaining > 0){
var length = 0;
if(maxSize < remaining){
length = maxPayload;
} else {
length = remaining;
flag = 0;
}
// While data doesn't fit the MTU...
while (remaining > 0) {
var length = 0;
if (maxSize < remaining) {
length = maxPayload;
} else {
length = remaining;
flag = 0; // Last fragment
}

//Create the segment
$scope.fragments.push({
length: length,
flag: flag,
offset: offset,
})
// Create the segment
$scope.fragments.push({
length: length,
flag: flag,
offset: offset,
});

// Subtract the payload length of the fragment from the remaining payload
remaining -= length;
// Increment the offset by the length of the payload divided by 8
offset += length / 8;
}
};
});

//until everything has been sent.
remaining -= length;
offset = ~~(((offset*8)+length)/8);
}
};
});
113 changes: 60 additions & 53 deletions index.html
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Original file line number Diff line number Diff line change
@@ -1,61 +1,68 @@
<!DOCTYPE html>
<html ng-app="ipfCalc">
<head>
<title>IP Fragmentation Calculator</title>
<link rel="stylesheet" type="text/css" href="style/look.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>IP Fragmentation Calculator</title>
<link rel="stylesheet" type="text/css" href="style/look.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div ng-controller="CalculateController" id="wrapper">
<h1>Fragmentation Calculator</h1>
<!-- the form -->
<form name="form">
<div class="field">
<label for="dataSize">Data Size (Bytes)</label>
<input type="number" min="28" ng-model="data.dataSize" name="dataSize" required>
</div>
<div ng-controller="CalculateController" id="wrapper">
<h1>Fragmentation Calculator</h1>
<!-- the form -->
<form name="form">
<div class="field">
<label for="dataSize">Data Size/Network Payload (Bytes)</label>
<input type="number" min="28" ng-model="data.dataSize" name="dataSize" required>
</div>

<div class="field">
<label for="mtuSize">MTU (Bytes)</label>
<input type="number" max="1500" min="68" ng-model="data.mtuSize" name="mtuSize" required>
</div>
<button ng-click="calculate(data)" ng-disabled="form.$invalid">Calculate</button>
</form>
<div id="response">
<ul>
<!-- the fragment representation -->
<li class="fragment" ng-repeat="fragment in fragments">
<table>
<tr>
<th>{{ $index }}<span class="offset start">0</span></th>
<th>Length</th>
<th>ID</th>
<th>Flag</th>
<th>Offset<span class="offset middle">{{data.headerSize}}</span></th>
<th><span class="offset end">{{fragment.length + data.headerSize}}</span></th>
</tr>
<tr>
<td></td>
<td>{{ fragment.length }}</td>
<td>X</td>
<td>{{ fragment.flag }}</td>
<td>{{ fragment.offset }}</td>
<td>...</td>
</tr>
</table>
</li>
<!-- end fragment representation -->
</ul>
</div>
</div>
<!-- The credits -->
<div id="credits">
<p>Created by <a href="http://github.com/fixmycode">Pablo Albornoz</a></p>
<p>Help improve this project on <a href="http://github.com/fixmycode/IPFCalc/">GitHub</a></p>
<p>Learn more about <a href="http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly">IPv4 fragmentation</a></p>
</div>
<!-- The scripts -->
<script type="text/javascript" src="app/angular.min.js"></script>
<script type="text/javascript" src="app/app.js"></script>
<div class="field">
<label for="mtuSize">MTU (Bytes)</label>
<input type="number" max="1500" min="68" ng-model="data.mtuSize" name="mtuSize" required>
</div>

<!-- New input field for header size -->
<div class="field">
<label for="headerSize">Header Size (Bytes)</label>
<input type="number" min="0" ng-model="data.headerSize" name="headerSize" required>
</div>

<button ng-click="calculate(data)" ng-disabled="form.$invalid">Calculate</button>
</form>
<div id="response">
<ul>
<!-- the fragment representation -->
<li class="fragment" ng-repeat="fragment in fragments">
<table>
<tr>
<th>{{ $index }}<span class="offset start">0</span></th>
<th>Length</th>
<th>ID</th>
<th>Flag</th>
<th>Offset<span class="offset middle">{{data.headerSize}}</span></th>
<th><span class="offset end">{{fragment.length + data.headerSize}}</span></th>
</tr>
<tr>
<td></td>
<td>{{ fragment.length }}</td>
<td>X</td>
<td>{{ fragment.flag }}</td>
<td>{{ fragment.offset }}</td>
<td>...</td>
</tr>
</table>
</li>
<!-- end fragment representation -->
</ul>
</div>
</div>
<!-- The credits -->
<div id="credits">
<p>Created by <a href="http://github.com/fixmycode">Pablo Albornoz</a></p>
<p>Help improve this project on <a href="http://github.com/fixmycode/IPFCalc/">GitHub</a></p>
<p>Learn more about <a href="http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly">IPv4 fragmentation</a></p>
</div>
<!-- The scripts -->
<script type="text/javascript" src="app/angular.min.js"></script>
<script type="text/javascript" src="app/app.js"></script>
</body>
</html>