You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
3.0 KiB
100 lines
3.0 KiB
/**
|
|
* \file
|
|
* Write ready responses to an output stream.
|
|
*
|
|
* \author Georg Hopp
|
|
*
|
|
* \copyright
|
|
* Copyright © 2012 Georg Hopp
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef __HTTP_WRITER_H__
|
|
#define __HTTP_WRITER_H__
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include "class.h"
|
|
#include "http/message.h"
|
|
#include "queue.h"
|
|
#include "stream.h"
|
|
|
|
#include "commons.h"
|
|
|
|
|
|
/*
|
|
* the buffer that will be written back to an http client.
|
|
* If we have open 1024 paralell connection this will result
|
|
* in a memory usage of 128MB. Right now, we don't allow more
|
|
* than this amount of paralell connections.
|
|
*
|
|
* This one and the parser buffer are the hugest memory pools
|
|
* we need. The parser buffer is of the same size.
|
|
*
|
|
* Right now only the ringbuffer is reused for each connection
|
|
* resulting in some memory movement between some temporary
|
|
* space and the circular buffer.
|
|
*
|
|
* This behavioru should be kept in place for low memory machines
|
|
* running this code.
|
|
*
|
|
* Anyway, I will build a version which uses two ringbuffers for
|
|
* each connection, Resulting in a 256KB memory used for each
|
|
* connection. Which in turn means 256MB for 1024 paralell connections.
|
|
*
|
|
* And as I will also implement a cbuf pool, this memory will not be
|
|
* freed before application end.
|
|
*/
|
|
#define WRITER_MAX_BUF 131072
|
|
|
|
/*
|
|
* This is the multiplier for the size of the initial write buffer.
|
|
* It is used to store the
|
|
* string representation of the message, as well as the first part of
|
|
* the body if the headers exceed the size a multiple of this will
|
|
* be reserved...very unlikely, but not impossible.
|
|
* If no the whole body fits within this buffer only part of it will
|
|
* be copied in there. The rest will be send in following send calls.
|
|
*/
|
|
#define WRITER_BUF_CHUNK 1024 * 10 // our default buffer chunk for
|
|
// headers is 10k. This will result
|
|
// in at least 20m for 2000 concurrent
|
|
// connections.
|
|
|
|
typedef enum e_HttpWriterState {
|
|
HTTP_WRITER_GET=0,
|
|
HTTP_WRITER_WRITE,
|
|
HTTP_WRITER_DONE
|
|
} HttpWriterState;
|
|
|
|
CLASS(HttpWriter) {
|
|
char * buffer;
|
|
|
|
Queue queue;
|
|
HttpMessage current;
|
|
|
|
size_t nbuffer; // size of buffer
|
|
size_t nheader; // size headers in buf
|
|
size_t nbody; // sizeof body in buffer
|
|
size_t written; // already written bytes
|
|
|
|
HttpWriterState state;
|
|
};
|
|
|
|
ssize_t httpWriterWrite(void *, Stream);
|
|
|
|
#endif // __HTTP_WRITER_H__
|
|
|
|
// vim: set ts=4 sw=4:
|