diff --git a/js/ndnProtocol/modules/ndn-js.jsm b/js/ndnProtocol/modules/ndn-js.jsm
index 0a15cf4..0719199 100644
--- a/js/ndnProtocol/modules/ndn-js.jsm
+++ b/js/ndnProtocol/modules/ndn-js.jsm
@@ -36,7 +36,7 @@
 }
 var Closure=function(){this.ndn_data=null;this.ndn_data_dirty=!1};Closure.RESULT_ERR=-1;Closure.RESULT_OK=0;Closure.RESULT_REEXPRESS=1;Closure.RESULT_INTEREST_CONSUMED=2;Closure.RESULT_VERIFY=3;Closure.RESULT_FETCHKEY=4;Closure.UPCALL_FINAL=0;Closure.UPCALL_INTEREST=1;Closure.UPCALL_CONSUMED_INTEREST=2;Closure.UPCALL_CONTENT=3;Closure.UPCALL_INTEREST_TIMED_OUT=4;Closure.UPCALL_CONTENT_UNVERIFIED=5;Closure.UPCALL_CONTENT_BAD=6;Closure.prototype.upcall=function(){return Closure.RESULT_OK};
 var UpcallInfo=function(a,b,c,d){this.ndn=a;this.interest=b;this.matchedComps=c;this.contentObject=d};UpcallInfo.prototype.toString=function(){var a="ndn = "+this.ndn,a=a+("\nInterest = "+this.interest),a=a+("\nmatchedComps = "+this.matchedComps);return a+="\nContentObject: "+this.contentObject};
-var WebSocketTransport=function(){this.elementReader=this.connectedPort=this.connectedHost=this.ws=null;this.defaultGetHostAndPort=NDN.makeShuffledGetHostAndPort(["A.ws.ndn.ucla.edu","B.ws.ndn.ucla.edu","C.ws.ndn.ucla.edu","D.ws.ndn.ucla.edu","E.ws.ndn.ucla.edu"],9696)};
+var WebSocketTransport=function(){if(!WebSocket)throw Error("WebSocket support is not available on this platform.");this.elementReader=this.connectedPort=this.connectedHost=this.ws=null;this.defaultGetHostAndPort=NDN.makeShuffledGetHostAndPort(["A.ws.ndn.ucla.edu","B.ws.ndn.ucla.edu","C.ws.ndn.ucla.edu","D.ws.ndn.ucla.edu","E.ws.ndn.ucla.edu"],9696)};
 WebSocketTransport.prototype.connect=function(a,b){null!=this.ws&&delete this.ws;this.ws=new WebSocket("ws://"+a.host+":"+a.port);0<LOG&&console.log("ws connection created.");this.connectedHost=a.host;this.connectedPort=a.port;this.ws.binaryType="arraybuffer";this.elementReader=new BinaryXmlElementReader(a);var c=this;this.ws.onmessage=function(a){a=a.data;if(null==a||void 0==a||""==a)console.log("INVALID ANSWER");else if(a instanceof ArrayBuffer){a=new Uint8Array(a);3<LOG&&console.log("BINARY RESPONSE IS "+
 DataUtils.toHex(a));try{c.elementReader.onReceivedData(a)}catch(b){console.log("NDN.ws.onmessage exception: "+b)}}};this.ws.onopen=function(a){3<LOG&&console.log(a);3<LOG&&console.log("ws.onopen: WebSocket connection opened.");3<LOG&&console.log("ws.onopen: ReadyState: "+this.readyState);b()};this.ws.onerror=function(a){console.log("ws.onerror: ReadyState: "+this.readyState);console.log(a);console.log("ws.onerror: WebSocket error: "+a.data)};this.ws.onclose=function(){console.log("ws.onclose: WebSocket connection closed.");
 c.ws=null;a.readyStatus=NDN.CLOSED;a.onclose()}};WebSocketTransport.prototype.send=function(a){if(null!=this.ws){var b=new Uint8Array(a.length);b.set(a);this.ws.send(b.buffer);3<LOG&&console.log("ws.send() returned.")}else console.log("WebSocket connection is not established.")};
@@ -54,9 +54,9 @@
 Name.prototype.from_ccnb=function(a){a.readStartElement(this.getElementLabel());for(this.components=[];a.peekStartElement(CCNProtocolDTags.Component);)this.add(a.readBinaryElement(CCNProtocolDTags.Component));a.readEndElement()};Name.prototype.to_ccnb=function(a){if(null==this.components)throw Error("CANNOT ENCODE EMPTY CONTENT NAME");a.writeStartElement(this.getElementLabel());for(var b=this.components.length,c=0;c<b;c++)a.writeElement(CCNProtocolDTags.Component,this.components[c]);a.writeEndElement()};
 Name.prototype.getElementLabel=function(){return CCNProtocolDTags.Name};
 Name.prototype.add=function(a){var b;if("string"==typeof a)b=DataUtils.stringToUtf8Array(a);else if("object"==typeof a&&a instanceof Uint8Array)b=new Uint8Array(a);else if("object"==typeof a&&a instanceof ArrayBuffer)b=new Uint8Array(new ArrayBuffer(a.byteLength)),b.set(new Uint8Array(a));else if("object"==typeof a)b=new Uint8Array(a);else throw Error("Cannot add Name element at index "+this.components.length+": Invalid type");return this.components.push(b)};
-Name.prototype.to_uri=function(){if(0==this.components.length)return"/";for(var a="",b=0;b<this.components.length;++b)a+="/"+Name.toEscapedString(this.components[b]);return a};Name.prototype.getPrefix=function(a){return new Name(this.components.slice(0,a))};Name.prototype.getComponent=function(a){var b=new ArrayBuffer(this.components[a].length);(new Uint8Array(b)).set(this.components[a]);return b};
-Name.prototype.indexOfFileName=function(){for(var a=this.components.length-1;0<=a;--a){var b=this.components[a];if(!(0>=b.length)&&!(0==b[0]||192==b[0]||193==b[0]||245<=b[0]&&255>=b[0]))return a}return-1};Name.prototype.equalsName=function(a){if(this.components.length!=a.components.length)return!1;for(var b=this.components.length-1;0<=b;--b)if(!DataUtils.arraysEqual(this.components[b],a.components[b]))return!1;return!0};
-Name.prototype.getContentDigestValue=function(){for(var a=this.components.length-1;0<=a;--a){var b=Name.getComponentContentDigestValue(this.components[a]);if(null!=b)return b}return null};
+Name.prototype.to_uri=function(){if(0==this.components.length)return"/";for(var a="",b=0;b<this.components.length;++b)a+="/"+Name.toEscapedString(this.components[b]);return a};Name.prototype.addSegment=function(a){var a=DataUtils.nonNegativeIntToBigEndian(a),b=new Uint8Array(a.length+1);b.set(a,1);this.components.push(b);return this};Name.prototype.getPrefix=function(a){return new Name(this.components.slice(0,a))};
+Name.prototype.getComponent=function(a){var b=new ArrayBuffer(this.components[a].length);(new Uint8Array(b)).set(this.components[a]);return b};Name.prototype.indexOfFileName=function(){for(var a=this.components.length-1;0<=a;--a){var b=this.components[a];if(!(0>=b.length)&&!(0==b[0]||192==b[0]||193==b[0]||245<=b[0]&&255>=b[0]))return a}return-1};
+Name.prototype.equalsName=function(a){if(this.components.length!=a.components.length)return!1;for(var b=this.components.length-1;0<=b;--b)if(!DataUtils.arraysEqual(this.components[b],a.components[b]))return!1;return!0};Name.prototype.getContentDigestValue=function(){for(var a=this.components.length-1;0<=a;--a){var b=Name.getComponentContentDigestValue(this.components[a]);if(null!=b)return b}return null};
 Name.getComponentContentDigestValue=function(a){return a.length==Name.ContentDigestPrefix.length+32+Name.ContentDigestSuffix.length&&DataUtils.arraysEqual(a.subarray(0,Name.ContentDigestPrefix.length),Name.ContentDigestPrefix)&&DataUtils.arraysEqual(a.subarray(a.length-Name.ContentDigestSuffix.length,a.length),Name.ContentDigestSuffix)?a.subarray(Name.ContentDigestPrefix.length,Name.ContentDigestPrefix.length+32):null};Name.ContentDigestPrefix=new Uint8Array([193,46,77,46,71,193,1,170,2,133]);
 Name.ContentDigestSuffix=new Uint8Array([0]);Name.toEscapedString=function(a){for(var b="",c=!1,d=0;d<a.length;++d)if(46!=a[d]){c=!0;break}if(c)for(d=0;d<a.length;++d)c=a[d],b=48<=c&&57>=c||65<=c&&90>=c||97<=c&&122>=c||43==c||45==c||46==c||95==c?b+String.fromCharCode(c):b+("%"+(16>c?"0":"")+c.toString(16).toUpperCase());else{b="...";for(d=0;d<a.length;++d)b+="."}return b};
 Name.fromEscapedString=function(a){a=unescape(a.trim());return null==a.match(/[^.]/)?2>=a.length?null:DataUtils.toNumbersFromString(a.substr(3,a.length-3)):DataUtils.toNumbersFromString(a)};Name.prototype.match=function(a){var b=this.components,a=a.components;if(b.length>a.length)return!1;for(var c=0;c<b.length;++c)if(!DataUtils.arraysEqual(b[c],a[c]))return!1;return!0};
@@ -290,11 +290,11 @@
 BigInteger.prototype.millerRabin=bnpMillerRabin;BigInteger.prototype.clone=bnClone;BigInteger.prototype.intValue=bnIntValue;BigInteger.prototype.byteValue=bnByteValue;BigInteger.prototype.shortValue=bnShortValue;BigInteger.prototype.signum=bnSigNum;BigInteger.prototype.toByteArray=bnToByteArray;BigInteger.prototype.equals=bnEquals;BigInteger.prototype.min=bnMin;BigInteger.prototype.max=bnMax;BigInteger.prototype.and=bnAnd;BigInteger.prototype.or=bnOr;BigInteger.prototype.xor=bnXor;
 BigInteger.prototype.andNot=bnAndNot;BigInteger.prototype.not=bnNot;BigInteger.prototype.shiftLeft=bnShiftLeft;BigInteger.prototype.shiftRight=bnShiftRight;BigInteger.prototype.getLowestSetBit=bnGetLowestSetBit;BigInteger.prototype.bitCount=bnBitCount;BigInteger.prototype.testBit=bnTestBit;BigInteger.prototype.setBit=bnSetBit;BigInteger.prototype.clearBit=bnClearBit;BigInteger.prototype.flipBit=bnFlipBit;BigInteger.prototype.add=bnAdd;BigInteger.prototype.subtract=bnSubtract;
 BigInteger.prototype.multiply=bnMultiply;BigInteger.prototype.divide=bnDivide;BigInteger.prototype.remainder=bnRemainder;BigInteger.prototype.divideAndRemainder=bnDivideAndRemainder;BigInteger.prototype.modPow=bnModPow;BigInteger.prototype.modInverse=bnModInverse;BigInteger.prototype.pow=bnPow;BigInteger.prototype.gcd=bnGCD;BigInteger.prototype.isProbablePrime=bnIsProbablePrime;
-var LOG=0,NDN=function NDN(b){b=b||{};this.transport=(b.getTransport||function(){return new WebSocketTransport})();this.getHostAndPort=b.getHostAndPort||this.transport.defaultGetHostAndPort;this.host=void 0!==b.host?b.host:null;this.port=b.port||9696;this.readyStatus=NDN.UNOPEN;this.verify=void 0!==b.verify?b.verify:!0;this.onopen=b.onopen||function(){3<LOG&&console.log("NDN connection established.")};this.onclose=b.onclose||function(){3<LOG&&console.log("NDN connection closed.")};this.ccndid=null};
-NDN.UNOPEN=0;NDN.OPENED=1;NDN.CLOSED=2;NDN.ccndIdFetcher=new Name("/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY");NDN.prototype.createRoute=function(a,b){this.host=a;this.port=b};NDN.KeyStore=[];var KeyStoreEntry=function(a,b,c){this.keyName=a;this.rsaKey=b;this.timeStamp=c};NDN.addKeyEntry=function(a){null==NDN.getKeyByName(a.keyName)&&NDN.KeyStore.push(a)};
-NDN.getKeyByName=function(a){for(var b=null,c=0;c<NDN.KeyStore.length;c++)if(NDN.KeyStore[c].keyName.contentName.match(a.contentName)&&(null==b||NDN.KeyStore[c].keyName.contentName.components.length>b.keyName.contentName.components.length))b=NDN.KeyStore[c];return b};NDN.PITTable=[];var PITEntry=function(a,b){this.interest=a;this.closure=b;this.timerID=-1};
-NDN.getEntryForExpressedInterest=function(a){for(var b=null,c=0;c<NDN.PITTable.length;c++)if(NDN.PITTable[c].interest.matches_name(a)&&(null==b||NDN.PITTable[c].interest.name.components.length>b.interest.name.components.length))b=NDN.PITTable[c];return b};NDN.CSTable=[];var CSEntry=function(a,b){this.name=a;this.closure=b};function getEntryForRegisteredPrefix(a){for(var b=0;b<NDN.CSTable.length;b++)if(null!=NDN.CSTable[b].name.match(a))return NDN.CSTable[b];return null}
-NDN.makeShuffledGetHostAndPort=function(a,b){a=a.slice(0,a.length);DataUtils.shuffle(a);return function(){return 0==a.length?null:{host:a.splice(0,1)[0],port:b}}};
+var LOG=0,NDN=function NDN(b){if(!NDN.supported)throw Error("The necessary JavaScript support is not available on this platform.");b=b||{};this.transport=(b.getTransport||function(){return new WebSocketTransport})();this.getHostAndPort=b.getHostAndPort||this.transport.defaultGetHostAndPort;this.host=void 0!==b.host?b.host:null;this.port=b.port||9696;this.readyStatus=NDN.UNOPEN;this.verify=void 0!==b.verify?b.verify:!0;this.onopen=b.onopen||function(){3<LOG&&console.log("NDN connection established.")};
+this.onclose=b.onclose||function(){3<LOG&&console.log("NDN connection closed.")};this.ccndid=null};NDN.UNOPEN=0;NDN.OPENED=1;NDN.CLOSED=2;NDN.getSupported=function(){try{(new Uint8Array(1)).subarray(0,1)}catch(a){return console.log("NDN not available: Uint8Array not supported. "+a),!1}return!0};NDN.supported=NDN.getSupported();NDN.ccndIdFetcher=new Name("/%C1.M.S.localhost/%C1.M.SRV/ccnd/KEY");NDN.prototype.createRoute=function(a,b){this.host=a;this.port=b};NDN.KeyStore=[];
+var KeyStoreEntry=function(a,b,c){this.keyName=a;this.rsaKey=b;this.timeStamp=c};NDN.addKeyEntry=function(a){null==NDN.getKeyByName(a.keyName)&&NDN.KeyStore.push(a)};NDN.getKeyByName=function(a){for(var b=null,c=0;c<NDN.KeyStore.length;c++)if(NDN.KeyStore[c].keyName.contentName.match(a.contentName)&&(null==b||NDN.KeyStore[c].keyName.contentName.components.length>b.keyName.contentName.components.length))b=NDN.KeyStore[c];return b};NDN.PITTable=[];
+var PITEntry=function(a,b){this.interest=a;this.closure=b;this.timerID=-1};NDN.getEntryForExpressedInterest=function(a){for(var b=null,c=0;c<NDN.PITTable.length;c++)if(NDN.PITTable[c].interest.matches_name(a)&&(null==b||NDN.PITTable[c].interest.name.components.length>b.interest.name.components.length))b=NDN.PITTable[c];return b};NDN.CSTable=[];var CSEntry=function(a,b){this.name=a;this.closure=b};
+function getEntryForRegisteredPrefix(a){for(var b=0;b<NDN.CSTable.length;b++)if(null!=NDN.CSTable[b].name.match(a))return NDN.CSTable[b];return null}NDN.makeShuffledGetHostAndPort=function(a,b){a=a.slice(0,a.length);DataUtils.shuffle(a);return function(){return 0==a.length?null:{host:a.splice(0,1)[0],port:b}}};
 NDN.prototype.expressInterest=function(a,b,c){var d=new Interest(a);null!=c?(d.minSuffixComponents=c.minSuffixComponents,d.maxSuffixComponents=c.maxSuffixComponents,d.publisherPublicKeyDigest=c.publisherPublicKeyDigest,d.exclude=c.exclude,d.childSelector=c.childSelector,d.answerOriginKind=c.answerOriginKind,d.scope=c.scope,d.interestLifetime=c.interestLifetime):d.interestLifetime=4E3;if(null==this.host||null==this.port)if(null==this.getHostAndPort)console.log("ERROR: host OR port NOT SET");else{var e=
 this;this.connectAndExecute(function(){e.reconnectAndExpressInterest(d,b)})}else this.reconnectAndExpressInterest(d,b)};NDN.prototype.reconnectAndExpressInterest=function(a,b){if(this.transport.connectedHost!=this.host||this.transport.connectedPort!=this.port){var c=this;this.transport.connect(c,function(){c.expressInterestHelper(a,b)})}else this.expressInterestHelper(a,b)};
 NDN.prototype.expressInterestHelper=function(a,b){var c=encodeToBinaryInterest(a),d=this;if(null!=b){var e=new PITEntry(a,b);NDN.PITTable.push(e);b.pitEntry=e;var f=a.interestLifetime||4E3,g=function(){3<LOG&&console.log("Interest time out: "+a.name.to_uri());var h=NDN.PITTable.indexOf(e);0<=h&&NDN.PITTable.splice(h,1);b.upcall(Closure.UPCALL_INTEREST_TIMED_OUT,new UpcallInfo(d,a,0,null))==Closure.RESULT_REEXPRESS&&(3<LOG&&console.log("Re-express interest: "+a.name.to_uri()),e.timerID=setTimeout(g,