| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H |
| #define GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H |
| |
| #include <assert.h> |
| |
| #include "src/core/iomgr/endpoint.h" |
| #include "src/core/transport/chttp2/frame.h" |
| #include "src/core/transport/chttp2/frame_data.h" |
| #include "src/core/transport/chttp2/frame_goaway.h" |
| #include "src/core/transport/chttp2/frame_ping.h" |
| #include "src/core/transport/chttp2/frame_rst_stream.h" |
| #include "src/core/transport/chttp2/frame_settings.h" |
| #include "src/core/transport/chttp2/frame_window_update.h" |
| #include "src/core/transport/chttp2/hpack_encoder.h" |
| #include "src/core/transport/chttp2/hpack_parser.h" |
| #include "src/core/transport/chttp2/incoming_metadata.h" |
| #include "src/core/transport/chttp2/stream_map.h" |
| #include "src/core/transport/connectivity_state.h" |
| #include "src/core/transport/transport_impl.h" |
| |
| typedef struct grpc_chttp2_transport grpc_chttp2_transport; |
| typedef struct grpc_chttp2_stream grpc_chttp2_stream; |
| |
| /* streams are kept in various linked lists depending on what things need to |
| happen to them... this enum labels each list */ |
| typedef enum { |
| GRPC_CHTTP2_LIST_ALL_STREAMS, |
| GRPC_CHTTP2_LIST_CHECK_READ_OPS, |
| GRPC_CHTTP2_LIST_UNANNOUNCED_INCOMING_WINDOW_AVAILABLE, |
| GRPC_CHTTP2_LIST_WRITABLE, |
| GRPC_CHTTP2_LIST_WRITING, |
| GRPC_CHTTP2_LIST_WRITTEN, |
| GRPC_CHTTP2_LIST_PARSING_SEEN, |
| GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING, |
| GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT, |
| /** streams that are waiting to start because there are too many concurrent |
| streams on the connection */ |
| GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY, |
| STREAM_LIST_COUNT /* must be last */ |
| } grpc_chttp2_stream_list_id; |
| |
| /* deframer state for the overall http2 stream of bytes */ |
| typedef enum { |
| /* prefix: one entry per http2 connection prefix byte */ |
| GRPC_DTS_CLIENT_PREFIX_0 = 0, |
| GRPC_DTS_CLIENT_PREFIX_1, |
| GRPC_DTS_CLIENT_PREFIX_2, |
| GRPC_DTS_CLIENT_PREFIX_3, |
| GRPC_DTS_CLIENT_PREFIX_4, |
| GRPC_DTS_CLIENT_PREFIX_5, |
| GRPC_DTS_CLIENT_PREFIX_6, |
| GRPC_DTS_CLIENT_PREFIX_7, |
| GRPC_DTS_CLIENT_PREFIX_8, |
| GRPC_DTS_CLIENT_PREFIX_9, |
| GRPC_DTS_CLIENT_PREFIX_10, |
| GRPC_DTS_CLIENT_PREFIX_11, |
| GRPC_DTS_CLIENT_PREFIX_12, |
| GRPC_DTS_CLIENT_PREFIX_13, |
| GRPC_DTS_CLIENT_PREFIX_14, |
| GRPC_DTS_CLIENT_PREFIX_15, |
| GRPC_DTS_CLIENT_PREFIX_16, |
| GRPC_DTS_CLIENT_PREFIX_17, |
| GRPC_DTS_CLIENT_PREFIX_18, |
| GRPC_DTS_CLIENT_PREFIX_19, |
| GRPC_DTS_CLIENT_PREFIX_20, |
| GRPC_DTS_CLIENT_PREFIX_21, |
| GRPC_DTS_CLIENT_PREFIX_22, |
| GRPC_DTS_CLIENT_PREFIX_23, |
| /* frame header byte 0... */ |
| /* must follow from the prefix states */ |
| GRPC_DTS_FH_0, |
| GRPC_DTS_FH_1, |
| GRPC_DTS_FH_2, |
| GRPC_DTS_FH_3, |
| GRPC_DTS_FH_4, |
| GRPC_DTS_FH_5, |
| GRPC_DTS_FH_6, |
| GRPC_DTS_FH_7, |
| /* ... frame header byte 8 */ |
| GRPC_DTS_FH_8, |
| /* inside a http2 frame */ |
| GRPC_DTS_FRAME |
| } grpc_chttp2_deframe_transport_state; |
| |
| typedef struct { |
| grpc_chttp2_stream *head; |
| grpc_chttp2_stream *tail; |
| } grpc_chttp2_stream_list; |
| |
| typedef struct { |
| grpc_chttp2_stream *next; |
| grpc_chttp2_stream *prev; |
| } grpc_chttp2_stream_link; |
| |
| /* We keep several sets of connection wide parameters */ |
| typedef enum { |
| /* The settings our peer has asked for (and we have acked) */ |
| GRPC_PEER_SETTINGS = 0, |
| /* The settings we'd like to have */ |
| GRPC_LOCAL_SETTINGS, |
| /* The settings we've published to our peer */ |
| GRPC_SENT_SETTINGS, |
| /* The settings the peer has acked */ |
| GRPC_ACKED_SETTINGS, |
| GRPC_NUM_SETTING_SETS |
| } grpc_chttp2_setting_set; |
| |
| /* Outstanding ping request data */ |
| typedef struct grpc_chttp2_outstanding_ping { |
| gpr_uint8 id[8]; |
| grpc_closure *on_recv; |
| struct grpc_chttp2_outstanding_ping *next; |
| struct grpc_chttp2_outstanding_ping *prev; |
| } grpc_chttp2_outstanding_ping; |
| |
| /* forward declared in frame_data.h */ |
| struct grpc_chttp2_incoming_byte_stream { |
| grpc_byte_stream base; |
| gpr_refcount refs; |
| struct grpc_chttp2_incoming_byte_stream *next_message; |
| |
| grpc_chttp2_transport *transport; |
| grpc_chttp2_stream *stream; |
| int is_tail; |
| gpr_slice_buffer slices; |
| grpc_closure *on_next; |
| gpr_slice *next; |
| }; |
| |
| typedef struct { |
| /** data to write next write */ |
| gpr_slice_buffer qbuf; |
| |
| /** window available for us to send to peer */ |
| gpr_int64 outgoing_window; |
| /** window available to announce to peer */ |
| gpr_int64 announce_incoming_window; |
| /** how much window would we like to have for incoming_window */ |
| gpr_uint32 connection_window_target; |
| |
| /** have we seen a goaway */ |
| gpr_uint8 seen_goaway; |
| /** have we sent a goaway */ |
| gpr_uint8 sent_goaway; |
| |
| /** is this transport a client? */ |
| gpr_uint8 is_client; |
| /** are the local settings dirty and need to be sent? */ |
| gpr_uint8 dirtied_local_settings; |
| /** have local settings been sent? */ |
| gpr_uint8 sent_local_settings; |
| /** bitmask of setting indexes to send out */ |
| gpr_uint32 force_send_settings; |
| /** settings values */ |
| gpr_uint32 settings[GRPC_NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS]; |
| |
| /** what is the next stream id to be allocated by this peer? |
| copied to next_stream_id in parsing when parsing commences */ |
| gpr_uint32 next_stream_id; |
| |
| /** last received stream id */ |
| gpr_uint32 last_incoming_stream_id; |
| |
| /** pings awaiting responses */ |
| grpc_chttp2_outstanding_ping pings; |
| /** next payload for an outgoing ping */ |
| gpr_uint64 ping_counter; |
| |
| /** concurrent stream count: updated when not parsing, |
| so this is a strict over-estimation on the client */ |
| gpr_uint32 concurrent_stream_count; |
| } grpc_chttp2_transport_global; |
| |
| typedef struct { |
| /** data to write now */ |
| gpr_slice_buffer outbuf; |
| /** hpack encoding */ |
| grpc_chttp2_hpack_compressor hpack_compressor; |
| gpr_int64 outgoing_window; |
| /** is this a client? */ |
| gpr_uint8 is_client; |
| /** callback for when writing is done */ |
| grpc_closure done_cb; |
| } grpc_chttp2_transport_writing; |
| |
| struct grpc_chttp2_transport_parsing { |
| /** is this transport a client? (boolean) */ |
| gpr_uint8 is_client; |
| |
| /** were settings updated? */ |
| gpr_uint8 settings_updated; |
| /** was a settings ack received? */ |
| gpr_uint8 settings_ack_received; |
| /** was a goaway frame received? */ |
| gpr_uint8 goaway_received; |
| |
| /** the last sent max_table_size setting */ |
| gpr_uint32 last_sent_max_table_size; |
| |
| /** initial window change */ |
| gpr_int64 initial_window_update; |
| |
| /** data to write later - after parsing */ |
| gpr_slice_buffer qbuf; |
| /* metadata object cache */ |
| grpc_mdstr *str_grpc_timeout; |
| grpc_mdelem *elem_grpc_status_ok; |
| /** parser for headers */ |
| grpc_chttp2_hpack_parser hpack_parser; |
| /** simple one shot parsers */ |
| union { |
| grpc_chttp2_window_update_parser window_update; |
| grpc_chttp2_settings_parser settings; |
| grpc_chttp2_ping_parser ping; |
| grpc_chttp2_rst_stream_parser rst_stream; |
| } simple; |
| /** parser for goaway frames */ |
| grpc_chttp2_goaway_parser goaway_parser; |
| |
| /** window available for peer to send to us */ |
| gpr_int64 incoming_window; |
| |
| /** next stream id available at the time of beginning parsing */ |
| gpr_uint32 next_stream_id; |
| gpr_uint32 last_incoming_stream_id; |
| |
| /* deframing */ |
| grpc_chttp2_deframe_transport_state deframe_state; |
| gpr_uint8 incoming_frame_type; |
| gpr_uint8 incoming_frame_flags; |
| gpr_uint8 header_eof; |
| gpr_uint32 expect_continuation_stream_id; |
| gpr_uint32 incoming_frame_size; |
| gpr_uint32 incoming_stream_id; |
| |
| /* active parser */ |
| void *parser_data; |
| grpc_chttp2_stream_parsing *incoming_stream; |
| grpc_chttp2_parse_error (*parser)( |
| grpc_exec_ctx *exec_ctx, void *parser_user_data, |
| grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); |
| |
| /* received settings */ |
| gpr_uint32 settings[GRPC_CHTTP2_NUM_SETTINGS]; |
| |
| /* goaway data */ |
| grpc_status_code goaway_error; |
| gpr_uint32 goaway_last_stream_index; |
| gpr_slice goaway_text; |
| |
| gpr_int64 outgoing_window; |
| |
| /** pings awaiting responses */ |
| grpc_chttp2_outstanding_ping pings; |
| }; |
| |
| struct grpc_chttp2_transport { |
| grpc_transport base; /* must be first */ |
| grpc_endpoint *ep; |
| grpc_mdctx *metadata_context; |
| gpr_refcount refs; |
| char *peer_string; |
| |
| /** when this drops to zero it's safe to shutdown the endpoint */ |
| gpr_refcount shutdown_ep_refs; |
| |
| gpr_mu mu; |
| |
| /** is the transport destroying itself? */ |
| gpr_uint8 destroying; |
| /** has the upper layer closed the transport? */ |
| gpr_uint8 closed; |
| |
| /** is a thread currently writing */ |
| gpr_uint8 writing_active; |
| /** is a thread currently parsing */ |
| gpr_uint8 parsing_active; |
| |
| /** is there a read request to the endpoint outstanding? */ |
| gpr_uint8 endpoint_reading; |
| |
| /** various lists of streams */ |
| grpc_chttp2_stream_list lists[STREAM_LIST_COUNT]; |
| |
| /** global state for reading/writing */ |
| grpc_chttp2_transport_global global; |
| /** state only accessible by the chain of execution that |
| set writing_active=1 */ |
| grpc_chttp2_transport_writing writing; |
| /** state only accessible by the chain of execution that |
| set parsing_active=1 */ |
| grpc_chttp2_transport_parsing parsing; |
| |
| /** maps stream id to grpc_chttp2_stream objects; |
| owned by the parsing thread when parsing */ |
| grpc_chttp2_stream_map parsing_stream_map; |
| |
| /** streams created by the client (possibly during parsing); |
| merged with parsing_stream_map during unlock when no |
| parsing is occurring */ |
| grpc_chttp2_stream_map new_stream_map; |
| |
| /** closure to execute writing */ |
| grpc_closure writing_action; |
| /** closure to finish reading from the endpoint */ |
| grpc_closure recv_data; |
| |
| /** incoming read bytes */ |
| gpr_slice_buffer read_buffer; |
| |
| /** address to place a newly accepted stream - set and unset by |
| grpc_chttp2_parsing_accept_stream; used by init_stream to |
| publish the accepted server stream */ |
| grpc_chttp2_stream **accepting_stream; |
| |
| struct { |
| /* accept stream callback */ |
| void (*accept_stream)(grpc_exec_ctx *exec_ctx, void *user_data, |
| grpc_transport *transport, const void *server_data); |
| void *accept_stream_user_data; |
| |
| /** connectivity tracking */ |
| grpc_connectivity_state_tracker state_tracker; |
| } channel_callback; |
| }; |
| |
| typedef struct { |
| /** HTTP2 stream id for this stream, or zero if one has not been assigned */ |
| gpr_uint32 id; |
| |
| /** window available for us to send to peer */ |
| gpr_int64 outgoing_window; |
| /** The number of bytes the upper layers have offered to receive. |
| As the upper layer offers more bytes, this value increases. |
| As bytes are read, this value decreases. */ |
| gpr_uint32 max_recv_bytes; |
| /** The number of bytes the upper layer has offered to read but we have |
| not yet announced to HTTP2 flow control. |
| As the upper layers offer to read more bytes, this value increases. |
| As we advertise incoming flow control window, this value decreases. */ |
| gpr_uint32 unannounced_incoming_window_for_parse; |
| gpr_uint32 unannounced_incoming_window_for_writing; |
| /** things the upper layers would like to send */ |
| grpc_metadata_batch *send_initial_metadata; |
| grpc_closure *send_initial_metadata_finished; |
| grpc_byte_stream *send_message; |
| grpc_closure *send_message_finished; |
| grpc_metadata_batch *send_trailing_metadata; |
| grpc_closure *send_trailing_metadata_finished; |
| |
| grpc_metadata_batch *recv_initial_metadata; |
| grpc_closure *recv_initial_metadata_finished; |
| grpc_byte_stream **recv_message; |
| grpc_closure *recv_message_ready; |
| grpc_metadata_batch *recv_trailing_metadata; |
| grpc_closure *recv_trailing_metadata_finished; |
| |
| /** when the application requests writes be closed, the write_closed is |
| 'queued'; when the close is flow controlled into the send path, we are |
| 'sending' it; when the write has been performed it is 'sent' */ |
| gpr_uint8 write_closed; |
| /** is this stream reading half-closed (boolean) */ |
| gpr_uint8 read_closed; |
| /** is this stream finished closing (and reportably closed) */ |
| gpr_uint8 finished_close; |
| /** is this stream in the stream map? (boolean) */ |
| gpr_uint8 in_stream_map; |
| /** has this stream seen an error? if 1, then pending incoming frames |
| can be thrown away */ |
| gpr_uint8 seen_error; |
| |
| gpr_uint8 published_initial_metadata; |
| gpr_uint8 published_trailing_metadata; |
| gpr_uint8 faked_trailing_metadata; |
| |
| grpc_chttp2_incoming_metadata_buffer received_initial_metadata; |
| grpc_chttp2_incoming_metadata_buffer received_trailing_metadata; |
| |
| grpc_chttp2_incoming_frame_queue incoming_frames; |
| } grpc_chttp2_stream_global; |
| |
| typedef struct { |
| /** HTTP2 stream id for this stream, or zero if one has not been assigned */ |
| gpr_uint32 id; |
| gpr_uint8 fetching; |
| gpr_uint8 sent_initial_metadata; |
| gpr_uint8 sent_message; |
| gpr_uint8 sent_trailing_metadata; |
| gpr_uint8 read_closed; |
| /** send this initial metadata */ |
| grpc_metadata_batch *send_initial_metadata; |
| grpc_byte_stream *send_message; |
| grpc_metadata_batch *send_trailing_metadata; |
| gpr_int64 outgoing_window; |
| /** how much window should we announce? */ |
| gpr_uint32 announce_window; |
| gpr_slice_buffer flow_controlled_buffer; |
| gpr_slice fetching_slice; |
| size_t stream_fetched; |
| grpc_closure finished_fetch; |
| } grpc_chttp2_stream_writing; |
| |
| struct grpc_chttp2_stream_parsing { |
| /** HTTP2 stream id for this stream, or zero if one has not been assigned */ |
| gpr_uint32 id; |
| /** has this stream received a close */ |
| gpr_uint8 received_close; |
| /** saw a rst_stream */ |
| gpr_uint8 saw_rst_stream; |
| /** how many header frames have we received? */ |
| gpr_uint8 header_frames_received; |
| /** which metadata did we get (on this parse) */ |
| gpr_uint8 got_metadata_on_parse[2]; |
| /** should we raise the seen_error flag in transport_global */ |
| gpr_uint8 seen_error; |
| /** window available for peer to send to us */ |
| gpr_int64 incoming_window; |
| /** parsing state for data frames */ |
| grpc_chttp2_data_parser data_parser; |
| /** reason give to rst_stream */ |
| gpr_uint32 rst_stream_reason; |
| /** amount of window given */ |
| gpr_int64 outgoing_window; |
| /** number of bytes received - reset at end of parse thread execution */ |
| gpr_int64 received_bytes; |
| |
| /** incoming metadata */ |
| grpc_chttp2_incoming_metadata_buffer metadata_buffer[2]; |
| }; |
| |
| struct grpc_chttp2_stream { |
| grpc_stream_refcount *refcount; |
| grpc_chttp2_stream_global global; |
| grpc_chttp2_stream_writing writing; |
| grpc_chttp2_stream_parsing parsing; |
| |
| grpc_chttp2_stream_link links[STREAM_LIST_COUNT]; |
| gpr_uint8 included[STREAM_LIST_COUNT]; |
| }; |
| |
| /** Transport writing call flow: |
| chttp2_transport.c calls grpc_chttp2_unlocking_check_writes to see if writes |
| are required; |
| if they are, chttp2_transport.c calls grpc_chttp2_perform_writes to do the |
| writes. |
| Once writes have been completed (meaning another write could potentially be |
| started), |
| grpc_chttp2_terminate_writing is called. This will call |
| grpc_chttp2_cleanup_writing, at which |
| point the write phase is complete. */ |
| |
| /** Someone is unlocking the transport mutex: check to see if writes |
| are required, and schedule them if so */ |
| int grpc_chttp2_unlocking_check_writes(grpc_chttp2_transport_global *global, |
| grpc_chttp2_transport_writing *writing, |
| int is_parsing); |
| void grpc_chttp2_perform_writes( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_writing *transport_writing, |
| grpc_endpoint *endpoint); |
| void grpc_chttp2_terminate_writing(grpc_exec_ctx *exec_ctx, |
| void *transport_writing, int success); |
| void grpc_chttp2_cleanup_writing(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_transport_global *global, |
| grpc_chttp2_transport_writing *writing); |
| |
| void grpc_chttp2_prepare_to_read(grpc_chttp2_transport_global *global, |
| grpc_chttp2_transport_parsing *parsing); |
| /** Process one slice of incoming data; return 1 if the connection is still |
| viable after reading, or 0 if the connection should be torn down */ |
| int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_transport_parsing *transport_parsing, |
| gpr_slice slice); |
| void grpc_chttp2_publish_reads(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_transport_global *global, |
| grpc_chttp2_transport_parsing *parsing); |
| |
| /** Get a writable stream |
| returns non-zero if there was a stream available */ |
| void grpc_chttp2_list_add_writable_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| void grpc_chttp2_list_add_first_writable_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_writable_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_global **stream_global, |
| grpc_chttp2_stream_writing **stream_writing); |
| void grpc_chttp2_list_remove_writable_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| |
| /* returns 1 if stream added, 0 if it was already present */ |
| int grpc_chttp2_list_add_writing_stream( |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_writing *stream_writing) GRPC_MUST_USE_RESULT; |
| int grpc_chttp2_list_have_writing_streams( |
| grpc_chttp2_transport_writing *transport_writing); |
| int grpc_chttp2_list_pop_writing_stream( |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_writing **stream_writing); |
| |
| void grpc_chttp2_list_add_written_stream( |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_writing *stream_writing); |
| int grpc_chttp2_list_pop_written_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_global **stream_global, |
| grpc_chttp2_stream_writing **stream_writing); |
| |
| void grpc_chttp2_list_add_parsing_seen_stream( |
| grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_parsing *stream_parsing); |
| int grpc_chttp2_list_pop_parsing_seen_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_global **stream_global, |
| grpc_chttp2_stream_parsing **stream_parsing); |
| |
| void grpc_chttp2_list_add_waiting_for_concurrency( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_waiting_for_concurrency( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| void grpc_chttp2_list_add_check_read_ops( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_check_read_ops( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| void grpc_chttp2_list_add_stalled_by_transport( |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_writing *stream_writing); |
| int grpc_chttp2_list_pop_stalled_by_transport( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| void grpc_chttp2_list_add_unannounced_incoming_window_available( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| void grpc_chttp2_list_remove_unannounced_incoming_window_available( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_unannounced_incoming_window_available( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_global **stream_global, |
| grpc_chttp2_stream_parsing **stream_parsing); |
| |
| void grpc_chttp2_list_add_closed_waiting_for_parsing( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_closed_waiting_for_parsing( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| grpc_chttp2_stream_parsing *grpc_chttp2_parsing_lookup_stream( |
| grpc_chttp2_transport_parsing *transport_parsing, gpr_uint32 id); |
| grpc_chttp2_stream_parsing *grpc_chttp2_parsing_accept_stream( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, |
| gpr_uint32 id); |
| |
| void grpc_chttp2_add_incoming_goaway( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, |
| gpr_uint32 goaway_error, gpr_slice goaway_text); |
| |
| void grpc_chttp2_register_stream(grpc_chttp2_transport *t, |
| grpc_chttp2_stream *s); |
| /* returns 1 if this is the last stream, 0 otherwise */ |
| int grpc_chttp2_unregister_stream(grpc_chttp2_transport *t, |
| grpc_chttp2_stream *s) GRPC_MUST_USE_RESULT; |
| int grpc_chttp2_has_streams(grpc_chttp2_transport *t); |
| void grpc_chttp2_for_all_streams( |
| grpc_chttp2_transport_global *transport_global, void *user_data, |
| void (*cb)(grpc_chttp2_transport_global *transport_global, void *user_data, |
| grpc_chttp2_stream_global *stream_global)); |
| |
| void grpc_chttp2_parsing_become_skip_parser( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); |
| |
| void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx, |
| grpc_closure **pclosure, int success); |
| |
| #define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" |
| #define GRPC_CHTTP2_CLIENT_CONNECT_STRLEN \ |
| (sizeof(GRPC_CHTTP2_CLIENT_CONNECT_STRING) - 1) |
| |
| extern int grpc_http_trace; |
| extern int grpc_flowctl_trace; |
| |
| #define GRPC_CHTTP2_IF_TRACING(stmt) \ |
| if (!(grpc_http_trace)) \ |
| ; \ |
| else \ |
| stmt |
| |
| typedef enum { |
| GRPC_CHTTP2_FLOWCTL_MOVE, |
| GRPC_CHTTP2_FLOWCTL_CREDIT, |
| GRPC_CHTTP2_FLOWCTL_DEBIT |
| } grpc_chttp2_flowctl_op; |
| |
| #define GRPC_CHTTP2_FLOW_MOVE_COMMON(phase, transport, id1, id2, dst_context, \ |
| dst_var, src_context, src_var) \ |
| do { \ |
| assert(id1 == id2); \ |
| if (grpc_flowctl_trace) { \ |
| grpc_chttp2_flowctl_trace( \ |
| __FILE__, __LINE__, phase, GRPC_CHTTP2_FLOWCTL_MOVE, #dst_context, \ |
| #dst_var, #src_context, #src_var, transport->is_client, id1, \ |
| dst_context->dst_var, src_context->src_var); \ |
| } \ |
| dst_context->dst_var += src_context->src_var; \ |
| src_context->src_var = 0; \ |
| } while (0) |
| |
| #define GRPC_CHTTP2_FLOW_MOVE_STREAM(phase, transport, dst_context, dst_var, \ |
| src_context, src_var) \ |
| GRPC_CHTTP2_FLOW_MOVE_COMMON(phase, transport, dst_context->id, \ |
| src_context->id, dst_context, dst_var, \ |
| src_context, src_var) |
| #define GRPC_CHTTP2_FLOW_MOVE_TRANSPORT(phase, dst_context, dst_var, \ |
| src_context, src_var) \ |
| GRPC_CHTTP2_FLOW_MOVE_COMMON(phase, dst_context, 0, 0, dst_context, dst_var, \ |
| src_context, src_var) |
| |
| #define GRPC_CHTTP2_FLOW_CREDIT_COMMON(phase, transport, id, dst_context, \ |
| dst_var, amount) \ |
| do { \ |
| if (grpc_flowctl_trace) { \ |
| grpc_chttp2_flowctl_trace(__FILE__, __LINE__, phase, \ |
| GRPC_CHTTP2_FLOWCTL_CREDIT, #dst_context, \ |
| #dst_var, NULL, #amount, transport->is_client, \ |
| id, dst_context->dst_var, amount); \ |
| } \ |
| dst_context->dst_var += amount; \ |
| } while (0) |
| |
| #define GRPC_CHTTP2_FLOW_CREDIT_STREAM(phase, transport, dst_context, dst_var, \ |
| amount) \ |
| GRPC_CHTTP2_FLOW_CREDIT_COMMON(phase, transport, dst_context->id, \ |
| dst_context, dst_var, amount) |
| #define GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT(phase, dst_context, dst_var, amount) \ |
| GRPC_CHTTP2_FLOW_CREDIT_COMMON(phase, dst_context, 0, dst_context, dst_var, \ |
| amount) |
| |
| #define GRPC_CHTTP2_FLOW_DEBIT_COMMON(phase, transport, id, dst_context, \ |
| dst_var, amount) \ |
| do { \ |
| if (grpc_flowctl_trace) { \ |
| grpc_chttp2_flowctl_trace(__FILE__, __LINE__, phase, \ |
| GRPC_CHTTP2_FLOWCTL_DEBIT, #dst_context, \ |
| #dst_var, NULL, #amount, transport->is_client, \ |
| id, dst_context->dst_var, amount); \ |
| } \ |
| dst_context->dst_var -= amount; \ |
| } while (0) |
| |
| #define GRPC_CHTTP2_FLOW_DEBIT_STREAM(phase, transport, dst_context, dst_var, \ |
| amount) \ |
| GRPC_CHTTP2_FLOW_DEBIT_COMMON(phase, transport, dst_context->id, \ |
| dst_context, dst_var, amount) |
| #define GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT(phase, dst_context, dst_var, amount) \ |
| GRPC_CHTTP2_FLOW_DEBIT_COMMON(phase, dst_context, 0, dst_context, dst_var, \ |
| amount) |
| |
| void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase, |
| grpc_chttp2_flowctl_op op, const char *context1, |
| const char *var1, const char *context2, |
| const char *var2, int is_client, |
| gpr_uint32 stream_id, gpr_int64 val1, |
| gpr_int64 val2); |
| |
| void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream, |
| grpc_status_code status, gpr_slice *details); |
| void grpc_chttp2_mark_stream_closed( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global, int close_reads, |
| int close_writes); |
| void grpc_chttp2_start_writing(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_transport_global *transport_global); |
| |
| #ifdef GRPC_STREAM_REFCOUNT_DEBUG |
| #define GRPC_CHTTP2_STREAM_REF(stream_global, reason) \ |
| grpc_chttp2_stream_ref(stream_global, reason) |
| #define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, reason) \ |
| grpc_chttp2_stream_unref(exec_ctx, stream_global, reason) |
| void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global, |
| const char *reason); |
| void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_stream_global *stream_global, |
| const char *reason); |
| #else |
| #define GRPC_CHTTP2_STREAM_REF(stream_global, reason) \ |
| grpc_chttp2_stream_ref(stream_global) |
| #define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, reason) \ |
| grpc_chttp2_stream_unref(exec_ctx, stream_global) |
| void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global); |
| void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_stream_global *stream_global); |
| #endif |
| |
| grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, |
| grpc_chttp2_stream_parsing *stream_parsing, gpr_uint32 frame_size, |
| gpr_uint32 flags, grpc_chttp2_incoming_frame_queue *add_to_queue); |
| void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx, |
| grpc_chttp2_incoming_byte_stream *bs, |
| gpr_slice slice); |
| void grpc_chttp2_incoming_byte_stream_finished( |
| grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs); |
| |
| #endif |