diff --git a/js/ccnxProtocol/modules/ndn-js.jsm b/js/ccnxProtocol/modules/ndn-js.jsm
index 39c7661..30641f7 100644
--- a/js/ccnxProtocol/modules/ndn-js.jsm
+++ b/js/ccnxProtocol/modules/ndn-js.jsm
@@ -5,7 +5,8 @@
  * See COPYING for copyright and distribution information.
  */
 
-var EXPORTED_SYMBOLS = ["NDN", "Closure", "Name", "Interest", "ContentObject", "DataUtils"];
+var EXPORTED_SYMBOLS = ["NDN", "Closure", "Name", "Interest", "ContentObject",
+      "DataUtils", "MimeTypes"];
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 Components.utils.import("resource://gre/modules/NetUtil.jsm");
@@ -684,16 +685,8 @@
 	}
 };
 
-Name.prototype.getName=function(){
-	
-	var output = "";
-	
-	for(var i=0;i<this.components.length;i++){
-		output+= "/"+ DataUtils.toString(this.components[i]);
-	}
-	
-	return output;
-	
+Name.prototype.getName = function() {
+    return this.to_uri();
 };
 
 Name.makeBlob=function(name){
@@ -712,28 +705,51 @@
 	return blobArrays;
 };
 
-Name.createNameArray=function(name) {
-	var array = name.split('/');
-    var colonIndex = array[0].indexOf(':');
-    if (colonIndex >= 0) {
-        name = name.substr(colonIndex + 1, name.length - colonIndex - 1);
-        array = name.split('/');
+Name.createNameArray = function(name) {
+    name = name.trim();
+    if (name.length <= 0)
+        return [];
+
+    var iColon = name.indexOf(':');
+    if (iColon >= 0) {
+        // Make sure the colon came before a '/'.
+        var iFirstSlash = name.indexOf('/');
+        if (iFirstSlash < 0 || iColon < iFirstSlash)
+            // Omit the leading protocol such as ccnx:
+            name = name.substr(iColon + 1, name.length - iColon - 1).trim();
     }
-	
-	if(name[0]=="/")
-		array=array.slice(1,array.length);		
-	if(name[name.length-1]=="/")
-		array=array.slice(0,array.length-1);
+    
+  	if (name[0] == '/') {
+        if (name.length >= 2 && name[1] == '/') {
+            // Strip the authority following "//".
+            var iAfterAuthority = name.indexOf('/', 2);
+            if (iAfterAuthority < 0)
+                // Unusual case: there was only an authority.
+                return [];
+            else
+                name = name.substr(iAfterAuthority + 1, name.length - iAfterAuthority - 1).trim();
+        }
+        else
+            name = name.substr(1, name.length - 1).trim();
+    }
+
+	var array = name.split('/');
     
     // Unescape the components.
     for (var i = 0; i < array.length; ++i) {
-        var component = unescape(array[i]);
+        var component = unescape(array[i].trim());
         
         if (component.match(/[^.]/) == null) {
-            // Special case for component of only periods.  Remove 3 periods.
-            if (component.length <= 3)
-                array[i] = "";
+            // Special case for component of only periods.  
+            if (component.length <= 2) {
+                // Zero, one or two periods is illegal.  Ignore this componenent to be
+                //   consistent with the C implmentation.
+                // This also gets rid of a trailing '/'.
+                array = array.slice(0, i).concat(array.slice(i + 1, array.length));
+                --i;                
+            }
             else
+                // Remove 3 periods.
                 array[i] = component.substr(3, component.length - 3);
         }
         else
@@ -3984,6 +4000,549 @@
     return result;
 };
 
+var MimeTypes = {
+  /*
+   * Based on filename, return an object with properties contentType and charset.
+   */
+  getContentTypeAndCharset: function(filename) {      
+      var iDot = filename.lastIndexOf('.');
+      if (iDot >= 0) {
+          var extension = filename.substr(iDot + 1, filename.length - iDot - 1);
+          var contentType = MimeTypes[extension];
+          if (contentType != null) {
+              var charset = "ISO-8859-1";
+              if (contentType.split('/')[0] == "text")
+                  charset = "utf-8";
+              return { contentType: contentType, charset: charset };
+          }
+      }
+      
+      // Use a default.
+      return { contentType: "text/html", charset: "utf-8" };
+  },
+  
+  /* For each file extension, define the MIME type.
+   */
+  "323": "text/h323",
+  "%": "application/x-trash",
+  "~": "application/x-trash",
+  "3gp": "video/3gpp",
+  "7z": "application/x-7z-compressed",
+  "abw": "application/x-abiword",
+  "ai": "application/postscript",
+  "aif": "audio/x-aiff",
+  "aifc": "audio/x-aiff",
+  "aiff": "audio/x-aiff",
+  "alc": "chemical/x-alchemy",
+  "amr": "audio/amr",
+  "anx": "application/annodex",
+  "apk": "application/vnd.android.package-archive",
+  "art": "image/x-jg",
+  "asc": "text/plain",
+  "asf": "video/x-ms-asf",
+  "asx": "video/x-ms-asf",
+  "asn": "chemical/x-ncbi-asn1",
+  "atom": "application/atom+xml",
+  "atomcat": "application/atomcat+xml",
+  "atomsrv": "application/atomserv+xml",
+  "au": "audio/basic",
+  "snd": "audio/basic",
+  "avi": "video/x-msvideo",
+  "awb": "audio/amr-wb",
+  "axa": "audio/annodex",
+  "axv": "video/annodex",
+  "b": "chemical/x-molconn-Z",
+  "bak": "application/x-trash",
+  "bat": "application/x-msdos-program",
+  "bcpio": "application/x-bcpio",
+  "bib": "text/x-bibtex",
+  "bin": "application/octet-stream",
+  "bmp": "image/x-ms-bmp",
+  "boo": "text/x-boo",
+  "book": "application/x-maker",
+  "brf": "text/plain",
+  "bsd": "chemical/x-crossfire",
+  "c": "text/x-csrc",
+  "c++": "text/x-c++src",
+  "c3d": "chemical/x-chem3d",
+  "cab": "application/x-cab",
+  "cac": "chemical/x-cache",
+  "cache": "chemical/x-cache",
+  "cap": "application/cap",
+  "cascii": "chemical/x-cactvs-binary",
+  "cat": "application/vnd.ms-pki.seccat",
+  "cbin": "chemical/x-cactvs-binary",
+  "cbr": "application/x-cbr",
+  "cbz": "application/x-cbz",
+  "cc": "text/x-c++src",
+  "cda": "application/x-cdf",
+  "cdf": "application/x-cdf",
+  "cdr": "image/x-coreldraw",
+  "cdt": "image/x-coreldrawtemplate",
+  "cdx": "chemical/x-cdx",
+  "cdy": "application/vnd.cinderella",
+  "cer": "chemical/x-cerius",
+  "chm": "chemical/x-chemdraw",
+  "chrt": "application/x-kchart",
+  "cif": "chemical/x-cif",
+  "class": "application/java-vm",
+  "cls": "text/x-tex",
+  "cmdf": "chemical/x-cmdf",
+  "cml": "chemical/x-cml",
+  "cod": "application/vnd.rim.cod",
+  "com": "application/x-msdos-program",
+  "cpa": "chemical/x-compass",
+  "cpio": "application/x-cpio",
+  "cpp": "text/x-c++src",
+  "cpt": "image/x-corelphotopaint",
+  "cr2": "image/x-canon-cr2",
+  "crl": "application/x-pkcs7-crl",
+  "crt": "application/x-x509-ca-cert",
+  "crw": "image/x-canon-crw",
+  "csd": "audio/csound",
+  "csf": "chemical/x-cache-csf",
+  "csh": "application/x-csh",
+  "csml": "chemical/x-csml",
+  "csm": "chemical/x-csml",
+  "css": "text/css",
+  "csv": "text/csv",
+  "ctab": "chemical/x-cactvs-binary",
+  "ctx": "chemical/x-ctx",
+  "cu": "application/cu-seeme",
+  "cub": "chemical/x-gaussian-cube",
+  "cxf": "chemical/x-cxf",
+  "cef": "chemical/x-cxf",
+  "cxx": "text/x-c++src",
+  "d": "text/x-dsrc",
+  "dat": "application/x-ns-proxy-autoconfig",
+  "davmount": "application/davmount+xml",
+  "dcr": "application/x-director",
+  "deb": "application/x-debian-package",
+  "dif": "video/dv",
+  "dv": "video/dv",
+  "diff": "text/x-diff",
+  "patch": "text/x-diff",
+  "dir": "application/x-director",
+  "djvu": "image/vnd.djvu",
+  "djv": "image/vnd.djvu",
+  "dl": "video/dl",
+  "dll": "application/x-msdos-program",
+  "dmg": "application/x-apple-diskimage",
+  "dms": "application/x-dms",
+  "doc": "application/msword",
+  "docm": "application/vnd.ms-word.document.macroEnabled.12",
+  "docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+  "dot": "application/msword",
+  "dotm": "application/vnd.ms-word.template.macroEnabled.12",
+  "dotx": "application/vnd.openxmlformats-officedocument.wordprocessingml.template",
+  "dvi": "application/x-dvi",
+  "dxr": "application/x-director",
+  "emb": "chemical/x-embl-dl-nucleotide",
+  "embl": "chemical/x-embl-dl-nucleotide",
+  "eml": "message/rfc822",
+  "eps": "application/postscript",
+  "eps2": "application/postscript",
+  "eps3": "application/postscript",
+  "epsf": "application/postscript",
+  "epsi": "application/postscript",
+  "erf": "image/x-epson-erf",
+  "es": "application/ecmascript",
+  "etx": "text/x-setext",
+  "exe": "application/x-msdos-program",
+  "ez": "application/andrew-inset",
+  "fb": "application/x-maker",
+  "fbdoc": "application/x-maker",
+  "fch": "chemical/x-gaussian-checkpoint",
+  "fchk": "chemical/x-gaussian-checkpoint",
+  "fig": "application/x-xfig",
+  "flac": "audio/flac",
+  "fli": "video/fli",
+  "flv": "video/x-flv",
+  "fm": "application/x-maker",
+  "frame": "application/x-maker",
+  "frm": "application/x-maker",
+  "gal": "chemical/x-gaussian-log",
+  "gam": "chemical/x-gamess-input",
+  "gamin": "chemical/x-gamess-input",
+  "gan": "application/x-ganttproject",
+  "gau": "chemical/x-gaussian-input",
+  "gcd": "text/x-pcs-gcd",
+  "gcf": "application/x-graphing-calculator",
+  "gcg": "chemical/x-gcg8-sequence",
+  "gen": "chemical/x-genbank",
+  "gf": "application/x-tex-gf",
+  "gif": "image/gif",
+  "gjc": "chemical/x-gaussian-input",
+  "gjf": "chemical/x-gaussian-input",
+  "gl": "video/gl",
+  "gnumeric": "application/x-gnumeric",
+  "gpt": "chemical/x-mopac-graph",
+  "gsf": "application/x-font",
+  "gsm": "audio/x-gsm",
+  "gtar": "application/x-gtar",
+  "h": "text/x-chdr",
+  "h++": "text/x-c++hdr",
+  "hdf": "application/x-hdf",
+  "hh": "text/x-c++hdr",
+  "hin": "chemical/x-hin",
+  "hpp": "text/x-c++hdr",
+  "hqx": "application/mac-binhex40",
+  "hs": "text/x-haskell",
+  "hta": "application/hta",
+  "htc": "text/x-component",
+  "htm": "text/html",
+  "html": "text/html",
+  "hxx": "text/x-c++hdr",
+  "ica": "application/x-ica",
+  "ice": "x-conference/x-cooltalk",
+  "ico": "image/x-icon",
+  "ics": "text/calendar",
+  "icz": "text/calendar",
+  "ief": "image/ief",
+  "igs": "model/iges",
+  "iges": "model/iges",
+  "iii": "application/x-iphone",
+  "info": "application/x-info",
+  "inp": "chemical/x-gamess-input",
+  "ins": "application/x-internet-signup",
+  "iso": "application/x-iso9660-image",
+  "isp": "application/x-internet-signup",
+  "istr": "chemical/x-isostar",
+  "ist": "chemical/x-isostar",
+  "jad": "text/vnd.sun.j2me.app-descriptor",
+  "jam": "application/x-jam",
+  "jar": "application/java-archive",
+  "java": "text/x-java",
+  "jdx": "chemical/x-jcamp-dx",
+  "dx": "chemical/x-jcamp-dx",
+  "jmz": "application/x-jmol",
+  "jng": "image/x-jng",
+  "jnlp": "application/x-java-jnlp-file",
+  "jpe": "image/jpeg",
+  "jpeg": "image/jpeg",
+  "jpg": "image/jpeg",
+  "js": "application/javascript",
+  "json": "application/json",
+  "kar": "audio/midi",
+  "key": "application/pgp-keys",
+  "kil": "application/x-killustrator",
+  "kin": "chemical/x-kinemage",
+  "kml": "application/vnd.google-earth.kml+xml",
+  "kmz": "application/vnd.google-earth.kmz",
+  "kpr": "application/x-kpresenter",
+  "kpt": "application/x-kpresenter",
+  "ksp": "application/x-kspread",
+  "kwd": "application/x-kword",
+  "kwt": "application/x-kword",
+  "latex": "application/x-latex",
+  "lha": "application/x-lha",
+  "lhs": "text/x-literate-haskell",
+  "lin": "application/bbolin",
+  "lsf": "video/x-la-asf",
+  "lsx": "video/x-la-asf",
+  "ltx": "text/x-tex",
+  "lyx": "application/x-lyx",
+  "lzh": "application/x-lzh",
+  "lzx": "application/x-lzx",
+  "m3g": "application/m3g",
+  "m3u": "audio/mpegurl",
+  "m3u8": "application/x-mpegURL",
+  "m4a": "audio/mpeg",
+  "maker": "application/x-maker",
+  "man": "application/x-troff-man",
+  "manifest": "text/cache-manifest",
+  "mcif": "chemical/x-mmcif",
+  "mcm": "chemical/x-macmolecule",
+  "mdb": "application/msaccess",
+  "me": "application/x-troff-me",
+  "mesh": "model/mesh",
+  "mid": "audio/midi",
+  "midi": "audio/midi",
+  "mif": "application/x-mif",
+  "mm": "application/x-freemind",
+  "mmd": "chemical/x-macromodel-input",
+  "mmod": "chemical/x-macromodel-input",
+  "mmf": "application/vnd.smaf",
+  "mml": "text/mathml",
+  "mng": "video/x-mng",
+  "moc": "text/x-moc",
+  "mol": "chemical/x-mdl-molfile",
+  "mol2": "chemical/x-mol2",
+  "moo": "chemical/x-mopac-out",
+  "mop": "chemical/x-mopac-input",
+  "mopcrt": "chemical/x-mopac-input",
+  "movie": "video/x-sgi-movie",
+  "mp2": "audio/mpeg",
+  "mp3": "audio/mpeg",
+  "mp4": "video/mp4",
+  "mpc": "chemical/x-mopac-input",
+  "mpe": "video/mpeg",
+  "mpeg": "video/mpeg",
+  "mpega": "audio/mpeg",
+  "mpg": "video/mpeg",
+  "mpga": "audio/mpeg",
+  "mph": "application/x-comsol",
+  "mpv": "video/x-matroska",
+  "mkv": "video/x-matroska",
+  "ms": "application/x-troff-ms",
+  "msh": "model/mesh",
+  "msi": "application/x-msi",
+  "mvb": "chemical/x-mopac-vib",
+  "mxf": "application/mxf",
+  "mxu": "video/vnd.mpegurl",
+  "nb": "application/mathematica",
+  "nbp": "application/mathematica",
+  "nc": "application/x-netcdf",
+  "nef": "image/x-nikon-nef",
+  "nwc": "application/x-nwc",
+  "o": "application/x-object",
+  "oda": "application/oda",
+  "odb": "application/vnd.oasis.opendocument.database",
+  "odc": "application/vnd.oasis.opendocument.chart",
+  "odf": "application/vnd.oasis.opendocument.formula",
+  "odg": "application/vnd.oasis.opendocument.graphics",
+  "odi": "application/vnd.oasis.opendocument.image",
+  "odm": "application/vnd.oasis.opendocument.text-master",
+  "odp": "application/vnd.oasis.opendocument.presentation",
+  "ods": "application/vnd.oasis.opendocument.spreadsheet",
+  "odt": "application/vnd.oasis.opendocument.text",
+  "oga": "audio/ogg",
+  "ogg": "audio/ogg",
+  "ogv": "video/ogg",
+  "ogx": "application/ogg",
+  "old": "application/x-trash",
+  "one": "application/onenote",
+  "onepkg": "application/onenote",
+  "onetmp": "application/onenote",
+  "onetoc2": "application/onenote",
+  "orc": "audio/csound",
+  "orf": "image/x-olympus-orf",
+  "otg": "application/vnd.oasis.opendocument.graphics-template",
+  "oth": "application/vnd.oasis.opendocument.text-web",
+  "otp": "application/vnd.oasis.opendocument.presentation-template",
+  "ots": "application/vnd.oasis.opendocument.spreadsheet-template",
+  "ott": "application/vnd.oasis.opendocument.text-template",
+  "oza": "application/x-oz-application",
+  "p": "text/x-pascal",
+  "pas": "text/x-pascal",
+  "p7r": "application/x-pkcs7-certreqresp",
+  "pac": "application/x-ns-proxy-autoconfig",
+  "pat": "image/x-coreldrawpattern",
+  "pbm": "image/x-portable-bitmap",
+  "pcap": "application/cap",
+  "pcf": "application/x-font",
+  "pcx": "image/pcx",
+  "pdb": "chemical/x-pdb",
+  "ent": "chemical/x-pdb",
+  "pdf": "application/pdf",
+  "pfa": "application/x-font",
+  "pfb": "application/x-font",
+  "pgm": "image/x-portable-graymap",
+  "pgn": "application/x-chess-pgn",
+  "pgp": "application/pgp-signature",
+  "php": "application/x-httpd-php",
+  "php3": "application/x-httpd-php3",
+  "php3p": "application/x-httpd-php3-preprocessed",
+  "php4": "application/x-httpd-php4",
+  "php5": "application/x-httpd-php5",
+  "phps": "application/x-httpd-php-source",
+  "pht": "application/x-httpd-php",
+  "phtml": "application/x-httpd-php",
+  "pk": "application/x-tex-pk",
+  "pl": "text/x-perl",
+  "pm": "text/x-perl",
+  "pls": "audio/x-scpls",
+  "png": "image/png",
+  "pnm": "image/x-portable-anymap",
+  "pot": "text/plain",
+  "potm": "application/vnd.ms-powerpoint.template.macroEnabled.12",
+  "potx": "application/vnd.openxmlformats-officedocument.presentationml.template",
+  "ppam": "application/vnd.ms-powerpoint.addin.macroEnabled.12",
+  "ppm": "image/x-portable-pixmap",
+  "pps": "application/vnd.ms-powerpoint",
+  "ppsm": "application/vnd.ms-powerpoint.slideshow.macroEnabled.12",
+  "ppsx": "application/vnd.openxmlformats-officedocument.presentationml.slideshow",
+  "ppt": "application/vnd.ms-powerpoint",
+  "pptm": "application/vnd.ms-powerpoint.presentation.macroEnabled.12",
+  "pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
+  "prf": "application/pics-rules",
+  "prt": "chemical/x-ncbi-asn1-ascii",
+  "ps": "application/postscript",
+  "psd": "image/x-photoshop",
+  "py": "text/x-python",
+  "pyc": "application/x-python-code",
+  "pyo": "application/x-python-code",
+  "qgs": "application/x-qgis",
+  "qt": "video/quicktime",
+  "mov": "video/quicktime",
+  "qtl": "application/x-quicktimeplayer",
+  "ra": "audio/x-realaudio",
+  "ram": "audio/x-pn-realaudio",
+  "rar": "application/rar",
+  "ras": "image/x-cmu-raster",
+  "rb": "application/x-ruby",
+  "rd": "chemical/x-mdl-rdfile",
+  "rdf": "application/rdf+xml",
+  "rdp": "application/x-rdp",
+  "rgb": "image/x-rgb",
+  "rhtml": "application/x-httpd-eruby",
+  "rm": "audio/x-pn-realaudio",
+  "roff": "application/x-troff",
+  "ros": "chemical/x-rosdal",
+  "rpm": "application/x-redhat-package-manager",
+  "rss": "application/rss+xml",
+  "rtf": "application/rtf",
+  "rtx": "text/richtext",
+  "rxn": "chemical/x-mdl-rxnfile",
+  "scala": "text/x-scala",
+  "sci": "application/x-scilab",
+  "sce": "application/x-scilab",
+  "sco": "audio/csound",
+  "scr": "application/x-silverlight",
+  "sct": "text/scriptlet",
+  "wsc": "text/scriptlet",
+  "sd": "chemical/x-mdl-sdfile",
+  "sdf": "chemical/x-mdl-sdfile",
+  "sd2": "audio/x-sd2",
+  "sda": "application/vnd.stardivision.draw",
+  "sdc": "application/vnd.stardivision.calc",
+  "sdd": "application/vnd.stardivision.impress",
+  "sds": "application/vnd.stardivision.chart",
+  "sdw": "application/vnd.stardivision.writer",
+  "ser": "application/java-serialized-object",
+  "sfv": "text/x-sfv",
+  "sgf": "application/x-go-sgf",
+  "sgl": "application/vnd.stardivision.writer-global",
+  "sh": "application/x-sh",
+  "shar": "application/x-shar",
+  "shp": "application/x-qgis",
+  "shtml": "text/html",
+  "shx": "application/x-qgis",
+  "sid": "audio/prs.sid",
+  "sik": "application/x-trash",
+  "silo": "model/mesh",
+  "sis": "application/vnd.symbian.install",
+  "sisx": "x-epoc/x-sisx-app",
+  "sit": "application/x-stuffit",
+  "sitx": "application/x-stuffit",
+  "skd": "application/x-koan",
+  "skm": "application/x-koan",
+  "skp": "application/x-koan",
+  "skt": "application/x-koan",
+  "sldm": "application/vnd.ms-powerpoint.slide.macroEnabled.12",
+  "sldx": "application/vnd.openxmlformats-officedocument.presentationml.slide",
+  "smi": "application/smil",
+  "smil": "application/smil",
+  "spc": "chemical/x-galactic-spc",
+  "spl": "application/futuresplash",
+  "spx": "audio/ogg",
+  "sql": "application/x-sql",
+  "src": "application/x-wais-source",
+  "stc": "application/vnd.sun.xml.calc.template",
+  "std": "application/vnd.sun.xml.draw.template",
+  "sti": "application/vnd.sun.xml.impress.template",
+  "stl": "application/sla",
+  "stw": "application/vnd.sun.xml.writer.template",
+  "sty": "text/x-tex",
+  "sv4cpio": "application/x-sv4cpio",
+  "sv4crc": "application/x-sv4crc",
+  "svg": "image/svg+xml",
+  "svgz": "image/svg+xml",
+  "sw": "chemical/x-swissprot",
+  "swf": "application/x-shockwave-flash",
+  "swfl": "application/x-shockwave-flash",
+  "sxc": "application/vnd.sun.xml.calc",
+  "sxd": "application/vnd.sun.xml.draw",
+  "sxg": "application/vnd.sun.xml.writer.global",
+  "sxi": "application/vnd.sun.xml.impress",
+  "sxm": "application/vnd.sun.xml.math",
+  "sxw": "application/vnd.sun.xml.writer",
+  "t": "application/x-troff",
+  "tar": "application/x-tar",
+  "taz": "application/x-gtar-compressed",
+  "tcl": "application/x-tcl",
+  "tk": "text/x-tcl",
+  "tex": "text/x-tex",
+  "texinfo": "application/x-texinfo",
+  "texi": "application/x-texinfo",
+  "text": "text/plain",
+  "tgf": "chemical/x-mdl-tgf",
+  "tgz": "application/x-gtar-compressed",
+  "thmx": "application/vnd.ms-officetheme",
+  "tiff": "image/tiff",
+  "tif": "image/tiff",
+  "tm": "text/texmacs",
+  "torrent": "application/x-bittorrent",
+  "tr": "application/x-troff",
+  "ts": "video/MP2T",
+  "tsp": "application/dsptype",
+  "tsv": "text/tab-separated-values",
+  "txt": "text/plain",
+  "udeb": "application/x-debian-package",
+  "uls": "text/iuls",
+  "ustar": "application/x-ustar",
+  "val": "chemical/x-ncbi-asn1-binary",
+  "aso": "chemical/x-ncbi-asn1-binary",
+  "vcd": "application/x-cdlink",
+  "vcf": "text/x-vcard",
+  "vcs": "text/x-vcalendar",
+  "vmd": "chemical/x-vmd",
+  "vms": "chemical/x-vamas-iso14976",
+  "vrm": "x-world/x-vrml",
+  "vsd": "application/vnd.visio",
+  "wad": "application/x-doom",
+  "wav": "audio/x-wav",
+  "wax": "audio/x-ms-wax",
+  "wbmp": "image/vnd.wap.wbmp",
+  "wbxml": "application/vnd.wap.wbxml",
+  "webm": "video/webm",
+  "wk": "application/x-123",
+  "wm": "video/x-ms-wm",
+  "wma": "audio/x-ms-wma",
+  "wmd": "application/x-ms-wmd",
+  "wml": "text/vnd.wap.wml",
+  "wmlc": "application/vnd.wap.wmlc",
+  "wmls": "text/vnd.wap.wmlscript",
+  "wmlsc": "application/vnd.wap.wmlscriptc",
+  "wmv": "video/x-ms-wmv",
+  "wmx": "video/x-ms-wmx",
+  "wmz": "application/x-ms-wmz",
+  "wp5": "application/vnd.wordperfect5.1",
+  "wpd": "application/vnd.wordperfect",
+  "wrl": "model/vrml",
+  "vrml": "model/vrml",
+  "wvx": "video/x-ms-wvx",
+  "wz": "application/x-wingz",
+  "x3d": "model/x3d+xml",
+  "x3db": "model/x3d+binary",
+  "x3dv": "model/x3d+vrml",
+  "xbm": "image/x-xbitmap",
+  "xcf": "application/x-xcf",
+  "xht": "application/xhtml+xml",
+  "xhtml": "application/xhtml+xml",
+  "xlam": "application/vnd.ms-excel.addin.macroEnabled.12",
+  "xlb": "application/vnd.ms-excel",
+  "xls": "application/vnd.ms-excel",
+  "xlsb": "application/vnd.ms-excel.sheet.binary.macroEnabled.12",
+  "xlsm": "application/vnd.ms-excel.sheet.macroEnabled.12",
+  "xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+  "xlt": "application/vnd.ms-excel",
+  "xltm": "application/vnd.ms-excel.template.macroEnabled.12",
+  "xltx": "application/vnd.openxmlformats-officedocument.spreadsheetml.template",
+  "xml": "application/xml",
+  "xpi": "application/x-xpinstall",
+  "xpm": "image/x-xpixmap",
+  "xsd": "application/xml",
+  "xsl": "application/xml",
+  "xspf": "application/xspf+xml",
+  "xtel": "chemical/x-xtel",
+  "xul": "application/vnd.mozilla.xul+xml",
+  "xwd": "image/x-xwindowdump",
+  "xyz": "chemical/x-xyz",
+  "zip": "application/zip",
+  "zmt": "chemical/x-mopac-input"
+};
+
 /*
  * This file contains utilities to help encode and decode NDN objects.
  * author: ucla-cs