Http-Headers-fromLowercase

function http_case(header) { 
  var map = {"accept":"Accept","accept-charset":"Accept-Charset","accept-encoding":"Accept-Encoding","accept-language":"Accept-Language","accept-datetime":"Accept-Datetime","authorization":"Authorization","cache-control":"Cache-Control","connection":"Connection","cookie":"Cookie","content-length":"Content-Length","content-md5":"Content-MD5","content-type":"Content-Type","date":"Date","expect":"Expect","from":"From","host":"Host","if-match":"If-Match","if-modified-since":"If-Modified-Since","if-none-match":"If-None-Match","if-range":"If-Range","if-unmodified-since":"If-Unmodified-Since","max-forwards":"Max-Forwards","pragma":"Pragma","proxy-authorization":"Proxy-Authorization","range":"Range","referer":"Referer","te":"TE","upgrade":"Upgrade","user-agent":"User-Agent","via":"Via","warning":"Warning","x-requested-with":"X-Requested-With","dnt":"DNT","x-forwarded-for":"X-Forwarded-For","x-forwarded-proto":"X-Forwarded-Proto","front-end-https":"Front-End-Https","x-att-deviceid":"X-ATT-DeviceId","x-wap-profile":"X-Wap-Profile","proxy-connection":"Proxy-Connection","access-control-allow-origin":"Access-Control-Allow-Origin","accept-ranges":"Accept-Ranges","age":"Age","allow":"Allow","content-encoding":"Content-Encoding","content-language":"Content-Language","content-location":"Content-Location","content-disposition":"Content-Disposition","content-range":"Content-Range","etag":"ETag","expires":"Expires","last-modified":"Last-Modified","link":"Link","location":"Location","p3p":"P3P","proxy-authenticate":"Proxy-Authenticate","refresh":"Refresh","retry-after":"Retry-After","server":"Server","set-cookie":"Set-Cookie","strict-transport-security":"Strict-Transport-Security","trailer":"Trailer","transfer-encoding":"Transfer-Encoding","vary":"Vary","www-authenticate":"WWW-Authenticate","x-frame-options":"X-Frame-Options","x-xss-protection":"X-XSS-Protection","x-content-type-options":"X-Content-Type-Options","x-powered-by":"X-Powered-By","x-ua-compatible":"X-UA-Compatible"}
 if (map.hasOwnProperty(header.toLowerCase()) {
   return map[header.toLowerCase()]
 } else {
   parts = header.split('-')
   for(var idx=0; idx<parts.length; idx++) {
     if (parts[idx].length >0) {
        var word = parts[idx]
        parts[idx] = word[0].toUpperCase() + word.substr(1)
     }
   }
   return parts.join('-')
 }
}