private String readCookie( HttpConnection conn ) throws IOException {     String key;     String value;     String[] substrs; 
    for( int i = 0; ( key = conn.getHeaderFieldKey( i ) ) != null; ++i ) {          key = key.toLowerCase();          if( key.equals( "set-cookie" ) ){             value = conn.getHeaderField( i );
             while( value != null ) {                 substrs = Utils.split( value, ';' );                 if( substrs[0].startsWith("JSESSIONID=") || // Java                      substrs[0].startsWith("PHPSESSID") || // PHP                      substrs[0].startsWith("SessionId") // ASP                 ){                 return substrs[0];                }                value = substrs[1];            }          }     }     return null; }
  
 
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