h2conn.c File Reference

Include dependency graph for h2conn.c:

Data Structures
struct	vlc_h2_conn
	HTTP/2 connection. More...
struct	vlc_h2_stream
	HTTP/2 stream. More...

Macros
#define	CO(c)   ((c)->opaque)
#define	SO(s)   CO((s)->conn)

Functions
static void	vlc_h2_conn_destroy (struct vlc_h2_conn *conn)
static int	vlc_h2_conn_queue (struct vlc_h2_conn *conn, struct vlc_h2_frame *f)
static int	vlc_h2_conn_queue_prio (struct vlc_h2_conn *conn, struct vlc_h2_frame *f)
static void *	vlc_h2_stream_lookup (void *ctx, uint_fast32_t id)
	Looks a stream up by ID. More...
static int	vlc_h2_stream_error (void *ctx, uint_fast32_t id, uint_fast32_t code)
	Reports a local stream error. More...
static int	vlc_h2_stream_fatal (struct vlc_h2_stream *s, uint_fast32_t code)
static void	vlc_h2_stream_headers (void *ctx, unsigned count, const char *const hdrs[][2])
	Reports received stream headers. More...
static int	vlc_h2_stream_data (void *ctx, struct vlc_h2_frame *f)
	Reports received stream data. More...
static void	vlc_h2_stream_end (void *ctx)
	Reports received end of stream. More...
static int	vlc_h2_stream_reset (void *ctx, uint_fast32_t code)
	Reports remote stream error. More...
static void	vlc_h2_stream_window_update (void *ctx, uint_fast32_t credit)
	Reports remote window size increments. More...
static void	vlc_h2_stream_wake_up (void *data)
static void	vlc_h2_stream_lock (struct vlc_h2_stream *s)
static int	vlc_h2_stream_unlock (struct vlc_h2_stream *s)
static struct vlc_http_msg *	vlc_h2_stream_wait (struct vlc_http_stream *stream)
static ssize_t	vlc_h2_stream_write (struct vlc_http_stream *stream, const void *base, size_t length, bool eos)
static block_t *	vlc_h2_stream_read (struct vlc_http_stream *stream)
	Receives stream data. More...
static void	vlc_h2_stream_close (struct vlc_http_stream *stream, bool aborted)
	Terminates a stream. More...
static struct vlc_http_stream *	vlc_h2_stream_open (struct vlc_http_conn *c, const struct vlc_http_msg *msg, bool has_data)
	Creates a stream. More...
static void	vlc_h2_initial_window_update (struct vlc_h2_conn *conn, uint_fast32_t value)
static void	vlc_h2_setting (void *ctx, uint_fast16_t id, uint_fast32_t value)
	Reports an HTTP/2 peer connection setting. More...
static int	vlc_h2_settings_done (void *ctx)
	Reports end of HTTP/2 peer settings. More...
static int	vlc_h2_ping (void *ctx, uint_fast64_t opaque)
	Reports a ping received from HTTP/2 peer. More...
static void	vlc_h2_error (void *ctx, uint_fast32_t code)
	Reports a local HTTP/2 connection failure. More...
static int	vlc_h2_reset (void *ctx, uint_fast32_t last_seq, uint_fast32_t code)
	Reports a remote HTTP/2 connection error. More...
static void	vlc_h2_window_status (void *ctx, uint32_t *restrict rcwd)
static void	vlc_h2_window_update (void *ctx, uint_fast32_t credit)
static ssize_t	vlc_https_recv (vlc_tls_t *tls, void *buf, size_t len)
	Receives TLS data. More...
static struct vlc_h2_frame *	vlc_h2_frame_recv (struct vlc_tls *tls)
	Receives an HTTP/2 frame through TLS. More...
static void	cleanup_parser (void *data)
static void *	vlc_h2_recv_thread (void *data)
	HTTP/2 receive thread. More...
static void	vlc_h2_conn_release (struct vlc_http_conn *c)
struct vlc_http_conn *	vlc_h2_conn_create (void *ctx, struct vlc_tls *tls)

Variables
static const struct vlc_http_stream_cbs	vlc_h2_stream_callbacks
static const struct vlc_h2_parser_cbs	vlc_h2_parser_callbacks
	HTTP/2 frames parser callbacks table. More...
static const struct vlc_http_conn_cbs	vlc_h2_conn_callbacks

Macro Definition Documentation

CO

#define CO

(

c

)

((c)->opaque)

SO

#define SO

(

s

)

CO((s)->conn)

Function Documentation

cleanup_parser()

static void cleanup_parser ( void *  data )

static

References vlc_h2_frame::data, and vlc_h2_parse_destroy().

Referenced by vlc_h2_recv_thread().

vlc_h2_conn_destroy()

static void vlc_h2_conn_destroy ( struct vlc_h2_conn *  conn )

static

References vlc_h2_conn::conn, vlc_h2_conn::out, vlc_h2_conn::streams, vlc_h2_conn::thread, vlc_http_conn::tls, vlc_cancel(), vlc_h2_error(), VLC_H2_NO_ERROR, vlc_h2_output_destroy(), vlc_join(), vlc_tls_Close(), and vlc_tls_Shutdown().

Referenced by vlc_h2_conn_release(), and vlc_h2_stream_close().

vlc_h2_conn_queue()

static int vlc_h2_conn_queue ( struct vlc_h2_conn *  conn, struct vlc_h2_frame *  f  )

static

References vlc_h2_conn::opaque, vlc_h2_conn::out, vlc_h2_frame_dump(), and vlc_h2_output_send().

Referenced by vlc_h2_conn_create(), vlc_h2_error(), vlc_h2_reset(), vlc_h2_settings_done(), vlc_h2_stream_error(), vlc_h2_stream_open(), vlc_h2_stream_read(), and vlc_h2_stream_write().

vlc_h2_conn_queue_prio()

static int vlc_h2_conn_queue_prio ( struct vlc_h2_conn *  conn, struct vlc_h2_frame *  f  )

static

References vlc_h2_conn::opaque, vlc_h2_conn::out, vlc_h2_frame_dump(), and vlc_h2_output_send_prio().

Referenced by vlc_h2_ping(), and vlc_h2_window_status().

vlc_h2_conn_release()

static void vlc_h2_conn_release ( struct vlc_http_conn *  c )

static

References vlc_h2_conn::conn, container_of, vlc_h2_conn_destroy(), vlc_mutex_lock(), and vlc_mutex_unlock().

vlc_h2_error()

static void vlc_h2_error ( void *  ctx, uint_fast32_t  code  )

static

Reports a local HTTP/2 connection failure.

References CO, vlc_h2_conn::conn, vlc_h2_conn_queue(), vlc_h2_frame_goaway(), VLC_H2_NO_ERROR, vlc_h2_strerror(), vlc_http_dbg(), and vlc_http_err().

Referenced by vlc_h2_conn_destroy().

vlc_h2_frame_recv()

static struct vlc_h2_frame * vlc_h2_frame_recv ( struct vlc_tls *  tls )

static

Receives an HTTP/2 frame through TLS.

This function allocates memory for and receives a whole HTTP/2 frame from a TLS session.

The caller must "own" the read side of the TLS session.

Note

This is a blocking function and may be a thread cancellation point.

Returns

a frame or NULL if the connection failed

References vlc_h2_frame::data, vlc_h2_frame::next, unlikely, vlc_cleanup_pop, vlc_cleanup_push, and vlc_https_recv().

Referenced by vlc_h2_recv_thread().

vlc_h2_initial_window_update()

static void vlc_h2_initial_window_update ( struct vlc_h2_conn *  conn, uint_fast32_t  value  )

static

References vlc_h2_conn::init_send_cwnd, vlc_h2_stream::older, vlc_h2_conn::send_cwnd, vlc_h2_conn::send_wait, vlc_h2_conn::streams, and vlc_cond_broadcast().

Referenced by vlc_h2_setting().

vlc_h2_ping()

static int vlc_h2_ping ( void *  ctx, uint_fast64_t  opaque  )

static

Reports a ping received from HTTP/2 peer.

References vlc_h2_conn::conn, vlc_h2_conn::opaque, vlc_h2_conn_queue_prio(), and vlc_h2_frame_pong().

vlc_h2_recv_thread()

static void * vlc_h2_recv_thread ( void *  data )

static

HTTP/2 receive thread.

References cleanup_parser(), CO, vlc_h2_conn::conn, vlc_h2_conn::lock, vlc_h2_stream::older, vlc_h2_parser::parser, vlc_h2_conn::streams, vlc_http_conn::tls, unlikely, vlc_cleanup_pop, vlc_cleanup_push, VLC_H2_CANCEL, vlc_h2_frame_dump(), vlc_h2_frame_recv(), vlc_h2_parse(), vlc_h2_parse_destroy(), vlc_h2_parse_init(), vlc_h2_parser_callbacks, vlc_h2_stream_reset(), vlc_http_dbg(), vlc_mutex_lock(), vlc_mutex_unlock(), vlc_restorecancel(), vlc_savecancel(), and vlc_thread_set_name().

Referenced by vlc_h2_conn_create().

vlc_h2_reset()

static int vlc_h2_reset ( void *  ctx, uint_fast32_t  last_seq, uint_fast32_t  code  )

static

Reports a remote HTTP/2 connection error.

References CO, vlc_h2_conn::conn, vlc_h2_conn_queue(), vlc_h2_frame_goaway(), VLC_H2_NO_ERROR, VLC_H2_REFUSED_STREAM, vlc_h2_stream_reset(), vlc_h2_strerror(), vlc_http_dbg(), and vlc_http_err().

vlc_h2_setting()

static void vlc_h2_setting ( void *  ctx, uint_fast16_t  id, uint_fast32_t  value  )

static

Reports an HTTP/2 peer connection setting.

References CO, vlc_h2_conn::conn, vlc_h2_initial_window_update(), VLC_H2_MAX_MAX_FRAME, VLC_H2_MIN_MAX_FRAME, VLC_H2_SETTING_INITIAL_WINDOW_SIZE, VLC_H2_SETTING_MAX_FRAME_SIZE, vlc_h2_setting_name(), and vlc_http_dbg().

vlc_h2_settings_done()

static int vlc_h2_settings_done ( void *  ctx )

static

Reports end of HTTP/2 peer settings.

References vlc_h2_conn::conn, vlc_h2_conn_queue(), and vlc_h2_frame_settings_ack().

vlc_h2_stream_close()

static void vlc_h2_stream_close ( struct vlc_http_stream *  stream, bool  aborted  )

static

Terminates a stream.

Sends an HTTP/2 stream reset, removes the stream from the HTTP/2 connection and deletes any stream resource.

References vlc_h2_conn::conn, vlc_h2_stream::conn, container_of, vlc_h2_stream::id, vlc_h2_stream::newer, vlc_h2_stream::older, vlc_h2_stream::recv_end, vlc_h2_stream::recv_hdr, vlc_h2_stream::recv_head, vlc_h2_stream::stream, VLC_H2_CANCEL, vlc_h2_conn_destroy(), VLC_H2_NO_ERROR, vlc_h2_stream_error(), vlc_http_msg_destroy(), vlc_mutex_lock(), and vlc_mutex_unlock().

vlc_h2_stream_data()

static int vlc_h2_stream_data ( void *  ctx, struct vlc_h2_frame *  f  )

static

Reports received stream data.

References vlc_h2_stream::conn, vlc_h2_stream::id, vlc_h2_frame::next, vlc_h2_stream::recv_cwnd, vlc_h2_stream::recv_end, vlc_h2_stream::recv_tailp, vlc_h2_stream::recv_wait, vlc_cond_signal(), VLC_H2_FLOW_CONTROL_ERROR, vlc_h2_frame_data_get, VLC_H2_STREAM_CLOSED, vlc_h2_stream_error(), and vlc_h2_stream_fatal().

vlc_h2_stream_end()

static void vlc_h2_stream_end ( void *  ctx )

static

Reports received end of stream.

References vlc_h2_stream::id, vlc_h2_stream::recv_end, vlc_h2_stream::recv_wait, SO, vlc_cond_broadcast(), and vlc_http_dbg().

vlc_h2_stream_error()

static int vlc_h2_stream_error ( void *  ctx, uint_fast32_t  id, uint_fast32_t  code  )

static

Reports a local stream error.

References CO, vlc_h2_conn::conn, vlc_h2_conn_queue(), vlc_h2_frame_rst_stream(), VLC_H2_NO_ERROR, vlc_h2_strerror(), vlc_http_dbg(), and vlc_http_err().

Referenced by vlc_h2_stream_close(), vlc_h2_stream_data(), vlc_h2_stream_fatal(), and vlc_h2_stream_read().

vlc_h2_stream_fatal()

static int vlc_h2_stream_fatal ( struct vlc_h2_stream *  s, uint_fast32_t  code  )

static

References vlc_h2_stream::conn, vlc_h2_stream::id, vlc_h2_stream::recv_end, vlc_h2_stream::recv_err, and vlc_h2_stream_error().

Referenced by vlc_h2_stream_data(), and vlc_h2_stream_headers().

vlc_h2_stream_headers()

static void vlc_h2_stream_headers ( void *  ctx, unsigned  count, const char *const  hdrs[][2]  )

static

Reports received stream headers.

References count, vlc_h2_stream::id, vlc_h2_stream::recv_hdr, vlc_h2_stream::recv_wait, SO, unlikely, vlc_cond_signal(), VLC_H2_PROTOCOL_ERROR, vlc_h2_stream_fatal(), vlc_http_dbg(), vlc_http_msg_destroy(), and vlc_http_msg_h2_headers().

vlc_h2_stream_lock()

static void vlc_h2_stream_lock ( struct vlc_h2_stream *  s )

static

References vlc_h2_stream::conn, vlc_h2_stream::interrupted, vlc_h2_conn::lock, vlc_h2_stream_wake_up(), vlc_interrupt_register(), and vlc_mutex_lock().

Referenced by vlc_h2_stream_read(), vlc_h2_stream_wait(), and vlc_h2_stream_write().

vlc_h2_stream_lookup()

static void * vlc_h2_stream_lookup ( void *  ctx, uint_fast32_t  id  )

static

Looks a stream up by ID.

References vlc_h2_conn::conn.

vlc_h2_stream_open()

static struct vlc_http_stream * vlc_h2_stream_open ( struct vlc_http_conn *  c, const struct vlc_http_msg *  msg, bool  has_data  )

static

Creates a stream.

Allocates a locally-initiated stream identifier on an HTTP/2 connection and queue stream headers for sending.

Headers are sent asynchronously. To obtain the result and answer from the other end, use vlc_http_stream_recv_headers().

Parameters

msg	HTTP message headers (including response status or request)

Returns

an HTTP stream, or NULL on error

References vlc_http_stream::cbs, CO, vlc_h2_conn::conn, vlc_h2_stream::conn, container_of, vlc_h2_stream::id, vlc_h2_conn::init_send_cwnd, vlc_h2_conn::lock, vlc_h2_stream::newer, vlc_h2_conn::next_id, vlc_h2_stream::older, vlc_h2_stream::recv_cwnd, vlc_h2_stream::recv_end, vlc_h2_stream::recv_err, vlc_h2_stream::recv_hdr, vlc_h2_stream::recv_head, vlc_h2_stream::recv_tailp, vlc_h2_stream::recv_wait, vlc_h2_conn::released, vlc_h2_stream::send_cwnd, vlc_h2_stream::send_wait, vlc_h2_stream::stream, vlc_h2_conn::streams, unlikely, vlc_cond_init(), vlc_h2_conn_queue(), VLC_H2_INIT_WINDOW, vlc_h2_stream_callbacks, vlc_http_dbg(), vlc_http_msg_h2_frame(), vlc_mutex_lock(), and vlc_mutex_unlock().

vlc_h2_stream_read()

static block_t * vlc_h2_stream_read ( struct vlc_http_stream *  stream )

static

Receives stream data.

Dequeues pending incoming data for an HTTP/2 stream. If there is currently no data block, wait for one.

Returns

a VLC data block, NULL on end of stream, or vlc_http_error on stream error

References block_heap_Alloc, vlc_h2_conn::conn, vlc_h2_stream::conn, container_of, vlc_frame_t::i_buffer, vlc_h2_stream::id, vlc_h2_stream::interrupted, vlc_h2_conn::lock, vlc_h2_frame::next, vlc_frame_t::p_buffer, vlc_h2_stream::recv_cwnd, vlc_h2_stream::recv_end, vlc_h2_stream::recv_err, vlc_h2_stream::recv_head, vlc_h2_stream::recv_tailp, vlc_h2_stream::recv_wait, vlc_h2_stream::stream, unlikely, vlc_cond_wait(), vlc_h2_conn_queue(), vlc_h2_frame_data_get, vlc_h2_frame_size(), vlc_h2_frame_window_update(), VLC_H2_INIT_WINDOW, VLC_H2_INTERNAL_ERROR, vlc_h2_stream_error(), vlc_h2_stream_lock(), vlc_h2_stream_unlock(), and vlc_http_error.

vlc_h2_stream_reset()

static int vlc_h2_stream_reset ( void *  ctx, uint_fast32_t  code  )

static

Reports remote stream error.

References vlc_h2_stream::id, vlc_h2_stream::recv_end, vlc_h2_stream::recv_err, vlc_h2_stream::recv_wait, SO, vlc_cond_broadcast(), vlc_h2_strerror(), and vlc_http_err().

Referenced by vlc_h2_recv_thread(), and vlc_h2_reset().

vlc_h2_stream_unlock()

static int vlc_h2_stream_unlock ( struct vlc_h2_stream *  s )

static

References vlc_h2_stream::conn, vlc_h2_conn::lock, vlc_interrupt_unregister(), and vlc_mutex_unlock().

Referenced by vlc_h2_stream_read(), vlc_h2_stream_wait(), and vlc_h2_stream_write().

vlc_h2_stream_wait()

static struct vlc_http_msg * vlc_h2_stream_wait ( struct vlc_http_stream *  stream )

static

References vlc_h2_conn::conn, vlc_h2_stream::conn, container_of, vlc_h2_stream::interrupted, vlc_h2_conn::lock, vlc_h2_stream::recv_end, vlc_h2_stream::recv_hdr, vlc_h2_stream::recv_wait, vlc_h2_stream::stream, vlc_cond_wait(), vlc_h2_stream_lock(), vlc_h2_stream_unlock(), and vlc_http_msg_attach().

vlc_h2_stream_wake_up()

static void vlc_h2_stream_wake_up ( void *  data )

static

References vlc_h2_conn::conn, vlc_h2_stream::conn, vlc_h2_stream::interrupted, vlc_h2_stream::recv_wait, vlc_cond_signal(), vlc_mutex_lock(), and vlc_mutex_unlock().

Referenced by vlc_h2_stream_lock().

vlc_h2_stream_window_update()

static void vlc_h2_stream_window_update ( void *  ctx, uint_fast32_t  credit  )

static

Reports remote window size increments.

References vlc_h2_stream::id, vlc_h2_stream::send_cwnd, vlc_h2_stream::send_wait, SO, vlc_cond_broadcast(), and vlc_http_dbg().

vlc_h2_stream_write()

static ssize_t vlc_h2_stream_write ( struct vlc_http_stream *  stream, const void *  base, size_t  length, bool  eos  )

static

References vlc_h2_conn::conn, vlc_h2_stream::conn, container_of, vlc_h2_stream::id, vlc_h2_stream::interrupted, likely, vlc_h2_conn::send_cwnd, vlc_h2_stream::send_cwnd, vlc_h2_stream::send_wait, vlc_h2_stream::stream, unlikely, vlc_cond_wait(), vlc_h2_conn_queue(), vlc_h2_frame_data(), vlc_h2_stream_lock(), and vlc_h2_stream_unlock().

vlc_h2_window_status()

static void vlc_h2_window_status ( void *  ctx, uint32_t *restrict  rcwd  )

static

References vlc_h2_conn::conn, vlc_h2_conn_queue_prio(), and vlc_h2_frame_window_update().

vlc_h2_window_update()

static void vlc_h2_window_update ( void *  ctx, uint_fast32_t  credit  )

static

References CO, vlc_h2_conn::conn, vlc_cond_broadcast(), and vlc_http_dbg().

vlc_https_recv()

static ssize_t vlc_https_recv ( vlc_tls_t *  tls, void *  buf, size_t  len  )

static

Receives TLS data.

Receives bytes from the peer through a TLS session.

Note

This may be a cancellation point. The caller is responsible for serializing reads on a given connection.

References count, pollfd::events, pollfd::fd, vlc_tls::ops, poll(), POLLIN, vlc_tls_operations::readv, vlc_restorecancel(), vlc_savecancel(), and vlc_tls_GetPollFD().

Referenced by vlc_h2_frame_recv().

Variable Documentation

vlc_h2_conn_callbacks

const struct vlc_http_conn_cbs vlc_h2_conn_callbacks

static

Initial value:

=
{
    vlc_h2_stream_open,
    vlc_h2_conn_release,
}

Referenced by vlc_h2_conn_create().

vlc_h2_parser_callbacks

const struct vlc_h2_parser_cbs vlc_h2_parser_callbacks

static

Initial value:

=
{
    vlc_h2_setting,
    vlc_h2_settings_done,
    vlc_h2_ping,
    vlc_h2_error,
    vlc_h2_reset,
    vlc_h2_window_status,
    vlc_h2_window_update,
    vlc_h2_stream_lookup,
    vlc_h2_stream_error,
    vlc_h2_stream_headers,
    vlc_h2_stream_data,
    vlc_h2_stream_end,
    vlc_h2_stream_reset,
    vlc_h2_stream_window_update,
}

HTTP/2 frames parser callbacks table.

Referenced by vlc_h2_recv_thread().

vlc_h2_stream_callbacks

const struct vlc_http_stream_cbs vlc_h2_stream_callbacks

static

Initial value:

=
{
    vlc_h2_stream_wait,
    vlc_h2_stream_write,
    vlc_h2_stream_read,
    vlc_h2_stream_close,
}

Referenced by vlc_h2_stream_open().