三级中文子域名支持的探索

http://永远的最爱JAVA.blog.chinajavaworld.com/

  /**
   * Parses headers from the read stream.
   *
   * @param s the input read stream
   */
  private void parseHeaders(ReadStream s) throws IOException
  {
    // This is still slowest part of the web server.  I don't see how
    // to improve it much more, but there must be a way.
    int version = getVersion();
 
    if (version < HTTP_1_0) {
      return;
    }
 
    if (version < HTTP_1_1)
      killKeepalive();
 
    byte []readBuffer = s.getBuffer();
    int readOffset = s.getOffset();
    int readLength = s.getLength();
 
    char []headerBuffer = _headerBuffer;
    int headerOffset = 1;
    int headerBufferSize = headerBuffer.length;
    headerBuffer[0] = 'z';
    int headerSize = 0;
    _headerSize = 0;
 
    CharSegment []headerKeys = _headerKeys;
    CharSegment []headerValues = _headerValues;
 
    boolean debug = log.isLoggable(Level.FINE);
 
    while (true) {
      int ch;
 
      int keyOffset = headerOffset;
 
      // scan the key
      while (true) {
        if (readLength <= readOffset) {
          readOffset = 0;
          if ((readLength = s.fillBuffer()) <= 0)
            return;
        }
        ch = readBuffer[readOffset++];
 
        if (ch == '\n') {
          s.setOffset(readOffset);
          return;
        }
        else if (ch == ':')
          break;
 
        headerBuffer[headerOffset++] = (char) ch;
      }
 
      while (headerBuffer[headerOffset - 1] == ' ')
        headerOffset--;
 
      int keyLength = headerOffset - keyOffset;
      headerKeys[headerSize].init(headerBuffer, keyOffset, keyLength);
 
      do {
        if (readLength <= readOffset) {
          readOffset = 0;
          if ((readLength = s.fillBuffer()) <= 0)
            return;
        }
        ch = readBuffer[readOffset++];
      } while (ch == ' ' || ch == '\t');
 
      int valueOffset = headerOffset;
 
      // scan the value
      while (true) {
        if (readLength <= readOffset) {
          readOffset = 0;
          if ((readLength = s.fillBuffer()) <= 0)
            break;
        }
 
        if (ch == '\n') {
          int ch1 = readBuffer[readOffset];
 
          if (ch1 == ' ' || ch1 == '\t') {
            ch = ' ';
            readOffset++;
 
            if (headerBuffer[headerOffset - 1] == '\r')
              headerOffset--;
          }
          else
            break;
        }
 
        headerBuffer[headerOffset++] = (char) ch;
 
        ch = readBuffer[readOffset++];
      }
      
      //加入以下两行代码，设置_host
      String readStr = new String(readBuffer);
      _host = readStr.split("Host:")[1].split("\n")[0];
 
      while (headerBuffer[headerOffset - 1] <= ' ')
        headerOffset--;
 
      int valueLength = headerOffset - valueOffset;
      headerValues[headerSize].init(headerBuffer, valueOffset, valueLength);
 
      if (debug) {
        log.fine(dbgId() +
                 headerKeys[headerSize] + ": " + headerValues[headerSize]);
      }
      
      if (addHeaderInt(headerBuffer, keyOffset, keyLength,
                       headerValues[headerSize])) {
        headerSize++;
      }
      
      _headerSize = headerSize;
    }
  }

Protocol: HTTP/1.1
Scheme: http
Server Name: 永远的最爱java.blog.chinajavaworld.com:8080 
Server Port: 8080
Protocol: HTTP/1.1
Server Info: Resin/3.0.24
Remote Addr: 127.0.0.1
Remote Host: 127.0.0.1
Character Encoding: UTF-8
Content Length: -1
Content Type: null
Auth Type: null
HTTP Method: GET
...