static_server.c File Reference

Static http server, sufficient to serve .html / .css / .js content. More...

Include dependency graph for static_server.c:

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Functions
static u8 *	format_state_machine_called_from (u8 *s, va_list *args)
	Format the called-from enum. More...
static void	http_static_server_sessions_reader_lock (void)
	Acquire reader lock on the sessions pools. More...
static void	http_static_server_sessions_reader_unlock (void)
	Drop reader lock on the sessions pools. More...
static void	http_static_server_sessions_writer_lock (void)
	Acquire writer lock on the sessions pools. More...
static void	http_static_server_sessions_writer_unlock (void)
	Drop writer lock on the sessions pools. More...
static void	http_static_server_session_timer_start (http_session_t *hs)
	Start a session cleanup timer. More...
static void	http_static_server_session_timer_stop (http_session_t *hs)
	stop a session cleanup timer More...
static http_session_t *	http_static_server_session_alloc (u32 thread_index)
	Allocate an http session. More...
static http_session_t *	http_static_server_session_get (u32 thread_index, u32 hs_index)
	Get an http session by index. More...
static void	http_static_server_session_free (http_session_t *hs)
	Free an http session. More...
static void	http_static_server_session_lookup_add (u32 thread_index, u32 s_index, u32 hs_index)
	add a session to the vpp < – > http session index map More...
static void	http_static_server_session_lookup_del (u32 thread_index, u32 s_index)
	Remove a session from the vpp < – > http session index map. More...
static http_session_t *	http_static_server_session_lookup (u32 thread_index, u32 s_index)
	lookup a session in the vpp < – > http session index map More...
static void	http_static_server_detach_cache_entry (http_session_t *hs)
	Detach cache entry from session. More...
static void	http_static_server_session_disconnect (http_session_t *hs)
	Disconnect a session. More...
static u32	static_send_data (http_session_t *hs, u8 *data, u32 length, u32 offset)
	send http data More...
static void	send_error (http_session_t *hs, char *str)
	Send an http error string. More...
static int	session_rx_request (http_session_t *hs)
	Retrieve data from the application layer. More...
static void	lru_validate (http_static_server_main_t *hsm)
	Sanity-check the forward and reverse LRU lists. More...
static void	lru_remove (http_static_server_main_t *hsm, file_data_cache_t *ep)
	Remove a data cache entry from the LRU lists. More...
static void	lru_add (http_static_server_main_t *hsm, file_data_cache_t *ep, f64 now)
	Add an entry to the LRU lists, tag w/ supplied timestamp. More...
static void	lru_update (http_static_server_main_t *hsm, file_data_cache_t *ep, f64 now)
	Remove and re-add a cache entry from/to the LRU lists. More...
static int	state_closed (session_t *s, http_session_t *hs, http_state_machine_called_from_t cf)
	Session-layer (main) data rx callback. More...
static void	close_session (http_session_t *hs)
void	http_static_server_register_builtin_handler (void *fp, char *url, int request_type)
	Register a builtin GET or POST handler. More...
static int	v_find_index (u8 *vec, char *str)
static int	state_established (session_t *s, http_session_t *hs, http_state_machine_called_from_t cf)
	established state - waiting for GET, POST, etc. More...
static int	state_send_more_data (session_t *s, http_session_t *hs, http_state_machine_called_from_t cf)
static int	state_sent_ok (session_t *s, http_session_t *hs, http_state_machine_called_from_t cf)
static int	http_static_server_rx_tx_callback (session_t *s, http_state_machine_called_from_t cf)
static int	http_static_server_rx_callback (session_t *s)
static int	http_static_server_tx_callback (session_t *s)
static int	http_static_server_session_accept_callback (session_t *s)
	Session accept callback. More...
static void	http_static_server_session_disconnect_callback (session_t *s)
	Session disconnect callback. More...
static void	http_static_server_session_reset_callback (session_t *s)
	Session reset callback. More...
static int	http_static_server_session_connected_callback (u32 app_index, u32 api_context, session_t *s, session_error_t err)
static int	http_static_server_add_segment_callback (u32 client_index, u64 segment_handle)
static void	http_static_session_cleanup (session_t *s, session_cleanup_ntf_t ntf)
static int	http_static_server_attach ()
static int	http_static_server_listen ()
static void	http_static_server_session_close_cb (void *hs_handlep)
static void	http_expired_timers_dispatch (u32 *expired_timers)
	Expired session timer-wheel callback. More...
static uword	http_static_server_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f)
	Timer-wheel expiration process. More...
static int	http_static_server_create (vlib_main_t *vm)
int	http_static_server_enable_api (u32 fifo_size, u32 cache_limit, u32 prealloc_fifos, u32 private_segment_size, u8 *www_root, u8 *uri)
	API helper function for vl_api_http_static_enable_t messages. More...
static clib_error_t *	http_static_server_create_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
u8 *	format_hsm_cache_entry (u8 *s, va_list *args)
	format a file cache entry More...
u8 *	format_http_session_state (u8 *s, va_list *args)
u8 *	format_http_session (u8 *s, va_list *args)
static clib_error_t *	http_show_static_server_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	http_clear_static_cache_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	http_static_server_main_init (vlib_main_t *vm)

Variables
http_static_server_main_t	http_static_server_main
static const char *	http_error_template
	http error boilerplate More...
static const char *	http_response_template
	http response boilerplate More...
static void *	state_funcs [HTTP_STATE_N_STATES]
static session_cb_vft_t	http_static_server_session_cb_vft
	Session-layer virtual function table. More...
vlib_node_registration_t	http_static_server_process_node
	(constructor) VLIB_REGISTER_NODE (http_static_server_process_node) More...
static vlib_cli_command_t	http_static_server_create_command
	(constructor) VLIB_CLI_COMMAND (http_static_server_create_command) More...
static vlib_cli_command_t	http_show_static_server_command
	(constructor) VLIB_CLI_COMMAND (http_show_static_server_command) More...
static vlib_cli_command_t	clear_http_static_cache_command
	(constructor) VLIB_CLI_COMMAND (clear_http_static_cache_command) More...

Detailed Description

Static http server, sufficient to serve .html / .css / .js content.

Definition in file static_server.c.

Function Documentation

close_session()

static void close_session ( http_session_t *  hs )

static

Definition at line 517 of file static_server.c.

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format_hsm_cache_entry()

u8* format_hsm_cache_entry	(	u8 *	s,
		va_list *	args
	)

format a file cache entry

Definition at line 1480 of file static_server.c.

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format_http_session()

u8* format_http_session	(	u8 *	s,
		va_list *	args
	)

Definition at line 1524 of file static_server.c.

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format_http_session_state()

u8* format_http_session_state	(	u8 *	s,
		va_list *	args
	)

Definition at line 1497 of file static_server.c.

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format_state_machine_called_from()

static u8* format_state_machine_called_from ( u8 *  s, va_list *  args  )

static

Format the called-from enum.

Definition at line 40 of file static_server.c.

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http_clear_static_cache_command_fn()

static clib_error_t* http_clear_static_cache_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1654 of file static_server.c.

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http_expired_timers_dispatch()

static void http_expired_timers_dispatch ( u32 *  expired_timers )

static

Expired session timer-wheel callback.

Definition at line 1228 of file static_server.c.

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http_show_static_server_command_fn()

static clib_error_t* http_show_static_server_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1541 of file static_server.c.

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http_static_server_add_segment_callback()

static int http_static_server_add_segment_callback ( u32  client_index, u64  segment_handle  )

static

Definition at line 1096 of file static_server.c.

http_static_server_attach()

static int http_static_server_attach ( )

static

Definition at line 1141 of file static_server.c.

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http_static_server_create()

static int http_static_server_create ( vlib_main_t *  vm )

static

Definition at line 1281 of file static_server.c.

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http_static_server_create_command_fn()

static clib_error_t* http_static_server_create_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1364 of file static_server.c.

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http_static_server_detach_cache_entry()

static void http_static_server_detach_cache_entry ( http_session_t *  hs )

static

Detach cache entry from session.

Definition at line 222 of file static_server.c.

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http_static_server_enable_api()

int http_static_server_enable_api	(	u32	fifo_size,
		u32	cache_limit,
		u32	prealloc_fifos,
		u32	private_segment_size,
		u8 *	www_root,
		u8 *	uri
	)

API helper function for vl_api_http_static_enable_t messages.

Definition at line 1327 of file static_server.c.

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http_static_server_listen()

static int http_static_server_listen ( )

static

Definition at line 1194 of file static_server.c.

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http_static_server_main_init()

static clib_error_t* http_static_server_main_init ( vlib_main_t *  vm )

static

Definition at line 1729 of file static_server.c.

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http_static_server_process()

static uword http_static_server_process ( vlib_main_t *  vm, vlib_node_runtime_t *  rt, vlib_frame_t *  f  )

static

Timer-wheel expiration process.

Definition at line 1246 of file static_server.c.

http_static_server_register_builtin_handler()

void http_static_server_register_builtin_handler	(	void *	fp,
		char *	url,
		int	request_type
	)

Register a builtin GET or POST handler.

Definition at line 525 of file static_server.c.

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http_static_server_rx_callback()

static int http_static_server_rx_callback ( session_t *  s )

static

Definition at line 1016 of file static_server.c.

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http_static_server_rx_tx_callback()

static int http_static_server_rx_tx_callback ( session_t *  s, http_state_machine_called_from_t  cf  )

inlinestatic

Definition at line 977 of file static_server.c.

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http_static_server_session_accept_callback()

static int http_static_server_session_accept_callback ( session_t *  s )

static

Session accept callback.

Definition at line 1032 of file static_server.c.

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http_static_server_session_alloc()

static http_session_t* http_static_server_session_alloc ( u32  thread_index )

static

Allocate an http session.

Definition at line 133 of file static_server.c.

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http_static_server_session_close_cb()

static void http_static_server_session_close_cb ( void *  hs_handlep )

static

Definition at line 1207 of file static_server.c.

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http_static_server_session_connected_callback()

static int http_static_server_session_connected_callback ( u32  app_index, u32  api_context, session_t *  s, session_error_t  err  )

static

Definition at line 1087 of file static_server.c.

http_static_server_session_disconnect()

static void http_static_server_session_disconnect ( http_session_t *  hs )

static

Disconnect a session.

Definition at line 252 of file static_server.c.

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http_static_server_session_disconnect_callback()

static void http_static_server_session_disconnect_callback ( session_t *  s )

static

Session disconnect callback.

Definition at line 1062 of file static_server.c.

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http_static_server_session_free()

static void http_static_server_session_free ( http_session_t *  hs )

static

Free an http session.

Definition at line 162 of file static_server.c.

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http_static_server_session_get()

static http_session_t* http_static_server_session_get ( u32  thread_index, u32  hs_index  )

static

Get an http session by index.

Definition at line 151 of file static_server.c.

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http_static_server_session_lookup()

static http_session_t* http_static_server_session_lookup ( u32  thread_index, u32  s_index  )

static

lookup a session in the vpp < – > http session index map

Definition at line 205 of file static_server.c.

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http_static_server_session_lookup_add()

static void http_static_server_session_lookup_add ( u32  thread_index, u32  s_index, u32  hs_index  )

static

add a session to the vpp < – > http session index map

Definition at line 184 of file static_server.c.

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http_static_server_session_lookup_del()

static void http_static_server_session_lookup_del ( u32  thread_index, u32  s_index  )

static

Remove a session from the vpp < – > http session index map.

Definition at line 195 of file static_server.c.

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http_static_server_session_reset_callback()

static void http_static_server_session_reset_callback ( session_t *  s )

static

Session reset callback.

Definition at line 1076 of file static_server.c.

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http_static_server_session_timer_start()

static void http_static_server_session_timer_start ( http_session_t *  hs )

static

Start a session cleanup timer.

Definition at line 102 of file static_server.c.

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http_static_server_session_timer_stop()

static void http_static_server_session_timer_stop ( http_session_t *  hs )

static

stop a session cleanup timer

Definition at line 121 of file static_server.c.

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http_static_server_sessions_reader_lock()

static void http_static_server_sessions_reader_lock ( void  )

static

Acquire reader lock on the sessions pools.

Definition at line 70 of file static_server.c.

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http_static_server_sessions_reader_unlock()

static void http_static_server_sessions_reader_unlock ( void  )

static

Drop reader lock on the sessions pools.

Definition at line 78 of file static_server.c.

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http_static_server_sessions_writer_lock()

static void http_static_server_sessions_writer_lock ( void  )

static

Acquire writer lock on the sessions pools.

Definition at line 86 of file static_server.c.

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http_static_server_sessions_writer_unlock()

static void http_static_server_sessions_writer_unlock ( void  )

static

Drop writer lock on the sessions pools.

Definition at line 94 of file static_server.c.

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http_static_server_tx_callback()

static int http_static_server_tx_callback ( session_t *  s )

static

Definition at line 1022 of file static_server.c.

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http_static_session_cleanup()

static void http_static_session_cleanup ( session_t *  s, session_cleanup_ntf_t  ntf  )

static

Definition at line 1103 of file static_server.c.

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lru_add()

static void lru_add ( http_static_server_main_t *  hsm, file_data_cache_t *  ep, f64  now  )

inlinestatic

Add an entry to the LRU lists, tag w/ supplied timestamp.

Definition at line 453 of file static_server.c.

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lru_remove()

static void lru_remove ( http_static_server_main_t *  hsm, file_data_cache_t *  ep  )

inlinestatic

Remove a data cache entry from the LRU lists.

Definition at line 419 of file static_server.c.

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lru_update()

static void lru_update ( http_static_server_main_t *  hsm, file_data_cache_t *  ep, f64  now  )

inlinestatic

Remove and re-add a cache entry from/to the LRU lists.

Definition at line 490 of file static_server.c.

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lru_validate()

static void lru_validate ( http_static_server_main_t *  hsm )

inlinestatic

Sanity-check the forward and reverse LRU lists.

Definition at line 374 of file static_server.c.

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send_error()

static void send_error ( http_session_t *  hs, char *  str  )

static

Send an http error string.

Parameters

hs	- the http session
str	- the error string, e.g. "404 Not Found"

Definition at line 335 of file static_server.c.

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session_rx_request()

static int session_rx_request ( http_session_t *  hs )

static

Retrieve data from the application layer.

Definition at line 350 of file static_server.c.

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state_closed()

static int state_closed ( session_t *  s, http_session_t *  hs, http_state_machine_called_from_t  cf  )

static

Session-layer (main) data rx callback.

Parse the http request, and reply to it. Future extensions might include POST processing, active content, etc.closed state - should never really get here

Definition at line 508 of file static_server.c.

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state_established()

static int state_established ( session_t *  s, http_session_t *  hs, http_state_machine_called_from_t  cf  )

static

established state - waiting for GET, POST, etc.

Definition at line 579 of file static_server.c.

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state_send_more_data()

static int state_send_more_data ( session_t *  s, http_session_t *  hs, http_state_machine_called_from_t  cf  )

static

Definition at line 883 of file static_server.c.

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state_sent_ok()

static int state_sent_ok ( session_t *  s, http_session_t *  hs, http_state_machine_called_from_t  cf  )

static

Definition at line 909 of file static_server.c.

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static_send_data()

static u32 static_send_data ( http_session_t *  hs, u8 *  data, u32  length, u32  offset  )

static

send http data

Parameters

hs	- http session
data	- the data vector to transmit
length	- length of data
offset	- transmit offset for this operation

Returns

offset for next transmit operation, may be unchanged w/ full fifo

Definition at line 291 of file static_server.c.

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v_find_index()

static int v_find_index ( u8 *  vec, char *  str  )

static

Definition at line 556 of file static_server.c.

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Variable Documentation

clear_http_static_cache_command

vlib_cli_command_t clear_http_static_cache_command

static

Initial value:

=
{
  .path = "clear http static cache",
  .short_help = "clear http static cache",
  .function = http_clear_static_cache_command_fn,
}

(constructor) VLIB_CLI_COMMAND (clear_http_static_cache_command)

Definition at line 1720 of file static_server.c.

http_error_template

const char* http_error_template

static

Initial value:

=
    "HTTP/1.1 %s\r\n"
    "Date: %U GMT\r\n"
    "Content-Type: text/html\r\n"
    "Connection: close\r\n"
    "Pragma: no-cache\r\n"
    "Content-Length: 0\r\n\r\n"

http error boilerplate

Definition at line 263 of file static_server.c.

http_response_template

const char* http_response_template

static

Initial value:

=
    "Date: %U GMT\r\n"
    "Expires: %U GMT\r\n"
    "Server: VPP Static\r\n"
    "Content-Type: %s\r\n"
    "Content-Length: %d\r\n\r\n"

http response boilerplate

Definition at line 273 of file static_server.c.

http_show_static_server_command

vlib_cli_command_t http_show_static_server_command

static

Initial value:

=
{
  .path = "show http static server",
  .short_help = "show http static server sessions cache [verbose [<nn>]]",
  .function = http_show_static_server_command_fn,
}

(constructor) VLIB_CLI_COMMAND (http_show_static_server_command)

Definition at line 1645 of file static_server.c.

http_static_server_create_command

vlib_cli_command_t http_static_server_create_command

static

Initial value:

=
{
  .path = "http static server",
  .short_help = "http static server www-root <path> [prealloc-fifos <nn>]\n"
  "[private-segment-size <nnMG>] [fifo-size <nbytes>] [uri <uri>]\n"
  "[debug [nn]]\n",
  .function = http_static_server_create_command_fn,
}

(constructor) VLIB_CLI_COMMAND (http_static_server_create_command)

Definition at line 1467 of file static_server.c.

http_static_server_main

http_static_server_main_t http_static_server_main

Definition at line 34 of file static_server.c.

http_static_server_process_node

vlib_node_registration_t http_static_server_process_node

Initial value:

=
{
  .function = http_static_server_process,
  .type = VLIB_NODE_TYPE_PROCESS,
  .name = "static-http-server-process",
  .state = VLIB_NODE_STATE_DISABLED,
}

(constructor) VLIB_REGISTER_NODE (http_static_server_process_node)

Definition at line 1271 of file static_server.c.

http_static_server_session_cb_vft

session_cb_vft_t http_static_server_session_cb_vft

static

Initial value:

= {
  .session_accept_callback = http_static_server_session_accept_callback,
  .session_disconnect_callback =
    http_static_server_session_disconnect_callback,
  .session_connected_callback = http_static_server_session_connected_callback,
  .add_segment_callback = http_static_server_add_segment_callback,
  .builtin_app_rx_callback = http_static_server_rx_callback,
  .builtin_app_tx_callback = http_static_server_tx_callback,
  .session_reset_callback = http_static_server_session_reset_callback,
  .session_cleanup_callback = http_static_session_cleanup,
}

Session-layer virtual function table.

Definition at line 1128 of file static_server.c.

state_funcs

void* state_funcs[HTTP_STATE_N_STATES]

static

Initial value:

= {
  state_closed,
  
  state_established,
  
  state_sent_ok,
  
  state_send_more_data,
}

Definition at line 966 of file static_server.c.