/**
* This method is used to write the zero length chunk. Writing the zero length chunk tells the
* client that the response has been fully sent, and the next sequence of bytes from the HTTP
* pipeline is the start of the next response. This will signal to the server kernel that the next
* request is read to read.
*/
private void finish() throws IOException {
try {
sender.send(zero);
monitor.ready(sender);
} catch (Exception cause) {
if (sender != null) {
monitor.close(sender);
}
throw new ProducerException("Error flushing response", cause);
}
}
/**
* This method is used to flush the contents of the buffer to the client. This method will block
* until such time as all of the data has been sent to the client. If at any point there is an
* error sending the content an exception is thrown.
*/
public void flush() throws IOException {
try {
if (!monitor.isClosed()) {
sender.flush();
}
} catch (Exception cause) {
if (sender != null) {
monitor.close(sender);
}
throw new ProducerException("Error sending response", cause);
}
}
/**
* This method is used to encode the provided buffer of bytes in a HTTP/1.1 compliant format and
* sent it to the client. Once the data has been encoded it is handed to the transport layer
* within the server, which may choose to buffer the data if the content is too small to send
* efficiently or if the socket is not write ready.
*
* @param buffer this is the buffer of bytes to send to the client
* @param off this is the offset within the buffer to send from
* @param len this is the number of bytes that are to be sent
*/
public void produce(ByteBuffer buffer, int off, int len) throws IOException {
int pos = 7;
if (monitor.isClosed()) {
throw new ProducerException("Stream has been closed");
}
if (len > 0) {
for (int num = len; num > 0; num >>>= 4) {
size[pos--] = index[num & 0xf];
}
try {
sender.send(size, pos + 1, 9 - pos);
sender.send(buffer, off, len);
sender.send(size, 8, 2);
} catch (Exception cause) {
if (sender != null) {
monitor.error(sender);
}
throw new ProducerException("Error sending response", cause);
}
}
}