DIR : /home/kozerus/public_html/getheaders.html

/home/kozerus/public_html

<html>
<head>
	<title>getheaders 20200813_1915</title>

	<script id="script_getheaders" >
		function getheaders() {
			var req = new XMLHttpRequest();
			req.open('GET', document.location, false);
			req.send(null);

// associate array to store all values
			var data = new Object();
// get all headers in one call and parse each item
			var headers = req.getAllResponseHeaders().toLowerCase();
			var aHeaders = headers.split('\n');
			var i =0;
			for (i= 0; i < aHeaders.length; i++) {
				var thisItem = aHeaders[i];
				var key = thisItem.substring(0, thisItem.indexOf(':'));
				var value = thisItem.substring(thisItem.indexOf(':')+1);
				data[key] = value;
				}      
	 
// get referer
	var referer = document.referrer;
	data["Referer"] = referer;
//get useragent
	var useragent = navigator.userAgent;
	data["UserAgent"] = useragent;
	 
//extra code to display the values in html
			var display = "";
			for(var key in data) {
				if (key != "") display += "<b>" + key + "</b> : " + data[key] + "<br>";
				}
			if( document.getElementById("div_dump")) {
				document.getElementById("div_dump").innerHTML =  display;  
				}
			}
		</script>
	</head>

<body bgcolor=linen onload="getheaders();return false;" >
	<hr color=goldenrod>
	<h1>getheaders</h1>
	<br>
	<hr color=goldenrod>
	<img src="/ko.png" alt="xhr_send" onclick="headers('');alert('ok'); return false;" height=50 >
	&nbsp &nbsp &nbsp &nbsp
	<img src="/ko.png" alt="xhr_send" onclick="xhr_send('');alert('ok'); return false;" height=50 >
	<hr color=goldenrod>
	<br>
	<hr color=goldenrod>
	<div id="div_dump"><h2>div_dump</h2></div>
	<hr color=goldenrod>

	<script id="script_headers" >
		function headers(args) {
			alert( "BUGS_601 headers args="+args );
			var myHeaders = new Headers();
//			myHeaders.append('Content-Type', 'image/jpeg');
			myHeaders.append('Content-Type', 'image/png');
			alert( "BUGS_602 headers myHeaders="+myHeaders );

//			var myInit = { 
//				method: 'GET',
//				headers: myHeaders,
//				mode: 'cors',
//				cache: 'default' 
//				};

			var myInit = { 
				method: 'POST',
				headers: myHeaders,
				mode: 'cors',
				cache: 'default' 
				};

			alert( "BUGS_603 headers myInit="+myInit );

			var myRequest = new Request('/ko.png', myInit);
//			myContentType = myRequest.headers.get('Content-Type'); // returns 'image/jpeg'
			myContentType = myRequest.headers.send('Content-Type'); // returns 'image/jpeg'
			alert( "BUGS_604 headers myContentType="+myContentType );
			}
			</script>


	<script id="script_xhr_send" >
		function xhr_send( args ) {
			alert( "BUGS_601 xhr_send args="+args );

		var xhr = new XMLHttpRequest();
//		xhr.open("POST", '/server', true);
//		xhr.open("POST", '/ko.png', true);
			alert( "BUGS_602 xhr_send args="+args );

//Send the proper header information along with the request
//		xhr.setRequestHeader("Content-Type", "image/png");
//		xhr.setRequestHeader("Content-Type", "image/jpeg");
//		xhr.setRequestHeader("Content-Type", "image/tiff");
//		xhr.setRequestHeader("Content-Type: application/json");
//		xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
		xhr.setRequestHeader("Content-Type", "text/html");
			alert( "BUGS_603 xhr_send args="+args );

		xhr.onreadystatechange = function() { // Call a function when the state changes.
			if (this.readyState === XMLHttpRequest.DONE && this.status === 200) {
// 				Request finished. Do processing here.
				htmout='';
				htmout='<img src="'+img+'" alt="'+img+'" onclick="window.open(\''+img+'\'); return false" height=100% border=0>';
				}
			}

//		xhr.send("foo=bar&lorem=ipsum");
// 		xhr.send(new Int8Array()); 
// 		xhr.send(document);
 		xhr.send(htmout);
		}

		</script>
	</body>
	</html>
//


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17.Aug.2010, Martin Wengenmayer