third_party_nghttp2/lib/nghttp2_option.c
Tatsuhiro Tsujikawa 928a81885c Limit the number of incoming reserved (remote) streams
RFC 7540 does not enforce any limit on the number of incoming reserved
streams (in RFC 7540 terms, streams in reserved (remote) state).  This
only affects client side, since only server can push streams.
Malicious server can push arbitrary number of streams, and make
client's memory exhausted.  The new option,
nghttp2_set_max_reserved_remote_streams, can set the maximum number of
such incoming streams to avoid possible memory exhaustion.  If this
option is set, and pushed streams are automatically closed on
reception, without calling user provided callback, if they exceed the
given limit.  The default value is 200.  If session is configured as
server side, this option has no effect.  Server can control the number
of streams to push.
2015-08-23 21:43:41 +09:00

65 lines
2.4 KiB
C

/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2014 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "nghttp2_option.h"
int nghttp2_option_new(nghttp2_option **option_ptr) {
*option_ptr = calloc(1, sizeof(nghttp2_option));
if (*option_ptr == NULL) {
return NGHTTP2_ERR_NOMEM;
}
return 0;
}
void nghttp2_option_del(nghttp2_option *option) { free(option); }
void nghttp2_option_set_no_auto_window_update(nghttp2_option *option, int val) {
option->opt_set_mask |= NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE;
option->no_auto_window_update = val;
}
void nghttp2_option_set_peer_max_concurrent_streams(nghttp2_option *option,
uint32_t val) {
option->opt_set_mask |= NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS;
option->peer_max_concurrent_streams = val;
}
void nghttp2_option_set_no_recv_client_magic(nghttp2_option *option, int val) {
option->opt_set_mask |= NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC;
option->no_recv_client_magic = val;
}
void nghttp2_option_set_no_http_messaging(nghttp2_option *option, int val) {
option->opt_set_mask |= NGHTTP2_OPT_NO_HTTP_MESSAGING;
option->no_http_messaging = val;
}
void nghttp2_option_set_max_reserved_remote_streams(nghttp2_option *option,
uint32_t val) {
option->opt_set_mask |= NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS;
option->max_reserved_remote_streams = val;
}