public void emit(HttpField field) {
int field_size = field.getName().length() + field.getValue().length();
size += field_size;
if (size > maxSize)
throw new BadMessageException(
HttpStatus.REQUEST_ENTITY_TOO_LARGE_413, "Header size " + size + ">" + maxSize);
if (field instanceof StaticTableHttpField) {
StaticTableHttpField value = (StaticTableHttpField) field;
switch (field.getHeader()) {
case C_STATUS:
status = (Integer) value.getStaticValue();
break;
case C_METHOD:
method = field.getValue();
break;
case C_SCHEME:
scheme = (HttpScheme) value.getStaticValue();
break;
default:
throw new IllegalArgumentException(field.getName());
}
} else if (field.getHeader() != null) {
switch (field.getHeader()) {
case C_STATUS:
status = field.getIntValue();
break;
case C_METHOD:
method = field.getValue();
break;
case C_SCHEME:
scheme = HttpScheme.CACHE.get(field.getValue());
break;
case C_AUTHORITY:
authority =
(field instanceof HostPortHttpField)
? ((HostPortHttpField) field)
: new AuthorityHttpField(field.getValue());
break;
case HOST:
// :authority fields must come first. If we have one, ignore the
// host header as far as authority goes.
if (authority == null)
authority =
(field instanceof HostPortHttpField)
? ((HostPortHttpField) field)
: new AuthorityHttpField(field.getValue());
fields.add(field);
break;
case C_PATH:
path = field.getValue();
break;
case CONTENT_LENGTH:
contentLength = field.getLongValue();
fields.add(field);
break;
default:
if (field.getName().charAt(0) != ':') fields.add(field);
}
} else {
if (field.getName().charAt(0) != ':') fields.add(field);
}
}
/*
* Parse the message headers and return true if the handler has signaled for
* a return
*/
protected boolean parseHeaders(ByteBuffer buffer) {
boolean handle = false;
// Process headers
while (_state.ordinal() < State.CONTENT.ordinal() && buffer.hasRemaining() && !handle) {
// process each character
byte ch = next(buffer);
if (ch == 0) break;
if (_maxHeaderBytes > 0 && ++_headerBytes > _maxHeaderBytes) {
log.warn("Header is too large > {}", _maxHeaderBytes);
throw new BadMessageException(HttpStatus.REQUEST_ENTITY_TOO_LARGE_413);
}
switch (_state) {
case HEADER:
switch (ch) {
case HttpTokens.COLON:
case HttpTokens.SPACE:
case HttpTokens.TAB:
throw new BadMessageException(HttpStatus.BAD_REQUEST_400, "Bad Continuation");
case HttpTokens.LINE_FEED:
{
_contentPosition = 0;
// End of headers!
// Was there a required host header?
if (!_host && _version == HttpVersion.HTTP_1_1 && _requestHandler != null) {
throw new BadMessageException(HttpStatus.BAD_REQUEST_400, "No Host");
}
// is it a response that cannot have a body?
if (_responseHandler != null
&& // response
(_responseStatus == 304
|| // not-modified response
_responseStatus == 204
|| // no-content
// response
_responseStatus < 200)) // 1xx response
_endOfContent = EndOfContent.NO_CONTENT; // ignore any
// other
// headers
// set
// else if we don't know framing
else if (_endOfContent == EndOfContent.UNKNOWN_CONTENT) {
if (_responseStatus == 0 // request
|| _responseStatus == 304 // not-modified
// response
|| _responseStatus == 204 // no-content response
|| _responseStatus < 200) // 1xx response
_endOfContent = EndOfContent.NO_CONTENT;
else _endOfContent = EndOfContent.EOF_CONTENT;
}
// How is the message ended?
switch (_endOfContent) {
case EOF_CONTENT:
setState(State.EOF_CONTENT);
handle = _handler.headerComplete() || handle;
return handle;
case CHUNKED_CONTENT:
setState(State.CHUNKED_CONTENT);
handle = _handler.headerComplete() || handle;
return handle;
case NO_CONTENT:
handle = _handler.headerComplete() || handle;
setState(State.END);
handle = _handler.messageComplete() || handle;
return handle;
default:
setState(State.CONTENT);
handle = _handler.headerComplete() || handle;
return handle;
}
}
default:
{
// now handle the ch
if (ch <= HttpTokens.SPACE) throw new BadMessageException();
if (buffer.hasRemaining()) {
// Try a look ahead for the known header name and value.
HttpField field =
_connectionFields == null
? null
: _connectionFields.getBest(buffer, -1, buffer.remaining());
if (field == null) field = CACHE.getBest(buffer, -1, buffer.remaining());
if (field != null) {
final String n;
final String v;
if (_strict) {
// Have to get the fields exactly from the
// buffer to match case
String fn = field.getName();
String fv = field.getValue();
n =
BufferUtils.toString(
buffer,
buffer.position() - 1,
fn.length(),
StandardCharsets.US_ASCII);
if (fv == null) v = null;
else {
v =
BufferUtils.toString(
buffer,
buffer.position() + fn.length() + 1,
fv.length(),
StandardCharsets.ISO_8859_1);
field = new HttpField(field.getHeader(), n, v);
}
} else {
n = field.getName();
v = field.getValue();
}
_header = field.getHeader();
_headerString = n;
if (v == null) {
// Header only
setState(State.HEADER_VALUE);
_string.setLength(0);
_length = 0;
buffer.position(buffer.position() + n.length() + 1);
break;
} else {
// Header and value
int pos = buffer.position() + n.length() + v.length() + 1;
byte b = buffer.get(pos);
if (b == HttpTokens.CARRIAGE_RETURN || b == HttpTokens.LINE_FEED) {
_field = field;
_valueString = v;
setState(State.HEADER_IN_VALUE);
if (b == HttpTokens.CARRIAGE_RETURN) {
_cr = true;
buffer.position(pos + 1);
} else buffer.position(pos);
break;
} else {
setState(State.HEADER_IN_VALUE);
setString(v);
buffer.position(pos);
break;
}
}
}
}
// New header
setState(State.HEADER_IN_NAME);
_string.setLength(0);
_string.append((char) ch);
_length = 1;
}
}
break;
case HEADER_IN_NAME:
if (ch == HttpTokens.COLON) {
if (_headerString == null) {
_headerString = takeString();
_header = HttpHeader.CACHE.get(_headerString);
}
_length = -1;
setState(State.HEADER_VALUE);
break;
}
if (ch > HttpTokens.SPACE) {
if (_header != null) {
setString(_header.asString());
_header = null;
_headerString = null;
}
_string.append((char) ch);
if (ch > HttpTokens.SPACE) _length = _string.length();
break;
}
throw new IllegalCharacterException(_state, ch, buffer);
case HEADER_VALUE:
if (ch > HttpTokens.SPACE || ch < 0) {
_string.append((char) (0xff & ch));
_length = _string.length();
setState(State.HEADER_IN_VALUE);
break;
}
if (ch == HttpTokens.SPACE || ch == HttpTokens.TAB) break;
if (ch == HttpTokens.LINE_FEED) {
_value = null;
_string.setLength(0);
_valueString = null;
_length = -1;
parsedHeader();
setState(State.HEADER);
break;
}
throw new IllegalCharacterException(_state, ch, buffer);
case HEADER_IN_VALUE:
if (ch >= HttpTokens.SPACE || ch < 0 || ch == HttpTokens.TAB) {
if (_valueString != null) {
setString(_valueString);
_valueString = null;
_field = null;
}
_string.append((char) (0xff & ch));
if (ch > HttpTokens.SPACE || ch < 0) _length = _string.length();
break;
}
if (ch == HttpTokens.LINE_FEED) {
if (_length > 0) {
_value = null;
_valueString = takeString();
_length = -1;
}
parsedHeader();
setState(State.HEADER);
break;
}
throw new IllegalCharacterException(_state, ch, buffer);
default:
throw new IllegalStateException(_state.toString());
}
}
return handle;
}