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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __mod_h2__h2_c1_io__
#define __mod_h2__h2_c1_io__
struct h2_config;
struct h2_session;
/* h2_io is the basic handler of a httpd connection. It keeps two brigades,
* one for input, one for output and works with the installed connection
* filters.
* The read is done via a callback function, so that input can be processed
* directly without copying.
*/
typedef struct {
struct h2_session *session;
apr_bucket_brigade *output;
int is_tls;
int unflushed;
apr_time_t cooldown_usecs;
apr_int64_t warmup_size;
apr_size_t write_size;
apr_time_t last_write;
apr_int64_t bytes_read;
apr_int64_t bytes_written;
int buffer_output;
apr_off_t buffered_len;
apr_off_t flush_threshold;
unsigned int is_flushed : 1;
unsigned int is_passing : 1;
char *scratch;
apr_size_t ssize;
apr_size_t slen;
} h2_c1_io;
apr_status_t h2_c1_io_init(h2_c1_io *io, struct h2_session *session);
/**
* Append data to the buffered output.
* @param buf the data to append
* @param length the length of the data to append
*/
apr_status_t h2_c1_io_add_data(h2_c1_io *io,
const char *buf,
size_t length);
apr_status_t h2_c1_io_add(h2_c1_io *io, apr_bucket *b);
apr_status_t h2_c1_io_append(h2_c1_io *io, apr_bucket_brigade *bb);
/**
* Pass any buffered data on to the connection output filters.
* @param io the connection io
*/
apr_status_t h2_c1_io_pass(h2_c1_io *io);
/**
* if there is any data pendiong or was any data send
* since the last FLUSH, send out a FLUSH now.
*/
apr_status_t h2_c1_io_assure_flushed(h2_c1_io *io);
/**
* Check if the buffered amount of data needs flushing.
*/
int h2_c1_io_needs_flush(h2_c1_io *io);
/**
* Check if we have output pending.
*/
int h2_c1_io_pending(h2_c1_io *io);
struct h2_session;
/**
* Read c1 input and pass it on to nghttp2.
* @param session the session
* @param when_pending != 0 if only pending input (sitting in filters)
* needs to be read
*/
apr_status_t h2_c1_read(struct h2_session *session);
#endif /* defined(__mod_h2__h2_c1_io__) */
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