HTTP state machine. More...

#include "HttpSM.h"
#include "ProxyConfig.h"
#include "HttpClientSession.h"
#include "HttpServerSession.h"
#include "HttpDebugNames.h"
#include "HttpSessionManager.h"
#include "P_Cache.h"
#include "P_Net.h"
#include "StatPages.h"
#include "Log.h"
#include "LogAccessHttp.h"
#include "ICP.h"
#include "PluginVC.h"
#include "ReverseProxy.h"
#include "RemapProcessor.h"
#include "Transform.h"
#include "HttpPages.h"
#include "congest/Congestion.h"

Include dependency graph for HttpSM.cc:

Go to the source code of this file.

Defines
#define	DEFAULT_RESPONSE_BUFFER_SIZE_INDEX 6
#define	DEFAULT_REQUEST_BUFFER_SIZE_INDEX 6
#define	MIN_CONFIG_BUFFER_SIZE_INDEX 5
#define	hsm_release_assert(EX)
#define	USE_NEW_EMPTY_MIOBUFFER
#define	MAX_SCATTER_LEN (sizeof(HttpSM)/sizeof(uint32_t) + 1)
#define	HTTP_INCREMENT_TRANS_STAT(X) HttpTransact::update_stat(&t_state, X, 1);
#define	REMEMBER_EVENT_FILTER(e) 1
#define	__REMEMBER(x) #x
#define	_REMEMBER(x) __REMEMBER(x)
#define	RECORD_FILE_LINE() history[pos].fileline = __FILE__ ":" _REMEMBER (__LINE__);
#define	REMEMBER(e, r)
#define	DebugSM(tag,...) DebugSpecific(debug_on, tag, __VA_ARGS__)
#define	STATE_ENTER(state_name, event)
#define	HTTP_SM_SET_DEFAULT_HANDLER(_h)
Functions
static double	milestone_difference (const ink_hrtime start, const ink_hrtime end)
	Takes two milestones and returns the difference.
static double	milestone_difference_msec (const ink_hrtime start, const ink_hrtime end)
void	clear_http_handler_times ()
Variables
DLL< HttpSM >	debug_sm_list
ink_mutex	debug_sm_list_mutex
static uint32_t	val [MAX_SCATTER_LEN]
static uint16_t	to [MAX_SCATTER_LEN]
static int	scat_count = 0
static const int	sub_header_size = sizeof("Content-type: ") - 1 + 2 + sizeof("Content-range: bytes ") - 1 + 4
static const int	boundary_size = 2 + sizeof("RANGE_SEPARATOR") - 1 + 2
static const char *	str_100_continue_response = "HTTP/1.1 100 Continue\r\n\r\n"
static const int	len_100_continue_response = strlen(str_100_continue_response)
SparseClassAllocator< HttpSM >	httpSMAllocator ("httpSMAllocator", 128, 16, HttpSM::_instantiate_func)
static int	next_sm_id = 0

Detailed Description

HTTP state machine.

License

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.

Definition in file HttpSM.cc.

Define Documentation

#define __REMEMBER ( x ) #x

Definition at line 276 of file HttpSM.cc.

#define _REMEMBER ( x ) __REMEMBER(x)

Definition at line 277 of file HttpSM.cc.

#define DebugSM	(	tag,
		...
	)		DebugSpecific(debug_on, tag, __VA_ARGS__)

Definition at line 286 of file HttpSM.cc.

Referenced by HttpSM::attach_server_session(), HttpSM::call_transact_and_set_next_state(), HttpSM::do_cache_delete_all_alts(), HttpSM::do_cache_lookup_and_read(), HttpSM::do_cache_prepare_action(), HttpSM::do_hostdb_lookup(), HttpSM::do_hostdb_reverse_lookup(), HttpSM::do_hostdb_update_if_necessary(), HttpSM::do_http_server_open(), HttpSM::do_redirect(), HttpSM::do_remap_request(), HttpSM::handle_server_setup_error(), HttpSM::is_bg_fill_necessary(), HttpSM::is_http_server_eos_truncation(), HttpSM::is_redirect_required(), HttpSM::kill_this(), HttpSM::main_handler(), HttpSM::mark_host_failure(), HttpSM::perform_cache_write_action(), HttpSM::perform_transform_cache_write_action(), HttpSM::process_hostdb_info(), HttpSM::process_srv_info(), HttpSM::redirect_request(), HttpSM::set_next_state(), HttpSM::setup_error_transfer(), HttpSM::setup_server_send_request(), HttpSM::setup_server_transfer(), HttpSM::state_api_callout(), HttpSM::state_cache_open_read(), HttpSM::state_hostdb_reverse_lookup(), HttpSM::state_http_server_open(), HttpSM::state_icp_lookup(), HttpSM::state_read_client_request_header(), HttpSM::state_read_push_response_header(), HttpSM::state_read_server_response_header(), HttpSM::state_remap_request(), HttpSM::state_send_server_request_header(), HttpSM::state_watch_for_client_abort(), HttpSM::tunnel_handler_100_continue(), HttpSM::tunnel_handler_cache_write(), HttpSM::tunnel_handler_post_ua(), HttpSM::tunnel_handler_server(), HttpSM::tunnel_handler_ua(), and HttpSM::update_stats().

#define DEFAULT_REQUEST_BUFFER_SIZE_INDEX 6

Definition at line 49 of file HttpSM.cc.

#define DEFAULT_RESPONSE_BUFFER_SIZE_INDEX 6

Definition at line 48 of file HttpSM.cc.

#define hsm_release_assert ( EX )

Value:

{ \
      if (!(EX)) \
      { \
         this->dump_state_on_assert(); \
         _ink_assert(#EX, __FILE__, __LINE__); \
      } \
}

Definition at line 52 of file HttpSM.cc.

Referenced by HttpSM::attach_server_session(), HttpSM::do_http_server_open(), HttpSM::setup_server_send_request(), and HttpSM::tunnel_handler_post_ua().

#define HTTP_INCREMENT_TRANS_STAT ( X ) HttpTransact::update_stat(&t_state, X, 1);

Definition at line 164 of file HttpSM.cc.

Referenced by HttpSM::do_cache_lookup_and_read(), HttpSM::tunnel_handler_cache_read(), and HttpSM::tunnel_handler_cache_write().

#define HTTP_SM_SET_DEFAULT_HANDLER ( _h )

Value:

{ \
  REMEMBER(-1,reentrancy_count); \
  default_handler = _h; }

Definition at line 296 of file HttpSM.cc.

Referenced by HttpSM::do_cache_prepare_update(), HttpSM::do_setup_post_tunnel(), HttpSM::get_http_schedule(), HttpSM::kill_this(), HttpSM::set_http_schedule(), HttpSM::set_next_state(), HttpSM::setup_100_continue_transfer(), HttpSM::setup_blind_tunnel(), HttpSM::setup_cache_read_transfer(), HttpSM::setup_cache_transfer_to_transform(), HttpSM::setup_internal_transfer(), HttpSM::setup_push_transfer_to_cache(), HttpSM::setup_server_transfer(), HttpSM::setup_server_transfer_to_cache_only(), HttpSM::setup_server_transfer_to_transform(), HttpSM::setup_transfer_from_transform(), HttpSM::setup_transfer_from_transform_to_cache_only(), HttpSM::setup_transform_to_server_transfer(), HttpSM::state_api_callout(), and HttpSM::state_remove_from_list().

#define MAX_SCATTER_LEN (sizeof(HttpSM)/sizeof(uint32_t) + 1)

Definition at line 86 of file HttpSM.cc.

#define MIN_CONFIG_BUFFER_SIZE_INDEX 5

Definition at line 50 of file HttpSM.cc.

#define RECORD_FILE_LINE ( ) history[pos].fileline = __FILE__ ":" _REMEMBER (__LINE__);

Definition at line 279 of file HttpSM.cc.

#define REMEMBER	(	e,
		r
	)

Value:

{ if (REMEMBER_EVENT_FILTER(e)) { \
    add_history_entry(__FILE__ ":" _REMEMBER (__LINE__), e, r); }}

Definition at line 282 of file HttpSM.cc.

Referenced by HttpSM::do_cache_lookup_and_read().

#define REMEMBER_EVENT_FILTER ( e ) 1

Definition at line 274 of file HttpSM.cc.

#define STATE_ENTER	(	state_name,
		event
	)

Value:

{ \
    /*ink_assert (magic == HTTP_SM_MAGIC_ALIVE); */ REMEMBER (event, reentrancy_count);  \
        DebugSM("http", "[%" PRId64 "] [%s, %s]", sm_id, \
        #state_name, HttpDebugNames::get_event_name(event)); }

Definition at line 291 of file HttpSM.cc.