| /* |
| * |
| * 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 "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_parser.h" |
| #include "src/core/transport/chttp2/incoming_metadata.h" |
| #include "src/core/transport/chttp2/stream_encoder.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_READ_WRITE_STATE_CHANGED, |
| GRPC_CHTTP2_LIST_WRITABLE, |
| GRPC_CHTTP2_LIST_WRITING, |
| GRPC_CHTTP2_LIST_WRITTEN, |
| GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE, |
| GRPC_CHTTP2_LIST_PARSING_SEEN, |
| GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING, |
| GRPC_CHTTP2_LIST_CANCELLED_WAITING_FOR_WRITING, |
| GRPC_CHTTP2_LIST_INCOMING_WINDOW_UPDATED, |
| /** 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 enum { |
| GRPC_WRITE_STATE_OPEN, |
| GRPC_WRITE_STATE_QUEUED_CLOSE, |
| GRPC_WRITE_STATE_SENT_CLOSE |
| } grpc_chttp2_write_state; |
| |
| typedef enum { |
| GRPC_DONT_SEND_CLOSED = 0, |
| GRPC_SEND_CLOSED, |
| GRPC_SEND_CLOSED_WITH_RST_STREAM |
| } grpc_chttp2_send_closed; |
| |
| 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_iomgr_closure *on_recv; |
| struct grpc_chttp2_outstanding_ping *next; |
| struct grpc_chttp2_outstanding_ping *prev; |
| } grpc_chttp2_outstanding_ping; |
| |
| typedef struct { |
| /** data to write next write */ |
| gpr_slice_buffer qbuf; |
| /** queued callbacks */ |
| grpc_iomgr_closure *pending_closures_head; |
| grpc_iomgr_closure *pending_closures_tail; |
| |
| /** window available for us to send to peer */ |
| gpr_uint32 outgoing_window; |
| /** window available for peer to send to us - updated after parse */ |
| gpr_uint32 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; |
| /** is this a client? */ |
| gpr_uint8 is_client; |
| } 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; |
| |
| /** 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; |
| /** 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_uint32 incoming_window; |
| gpr_uint32 incoming_window_delta; |
| |
| /** 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)( |
| 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_uint64 outgoing_window_update; |
| |
| /** 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; |
| |
| 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_iomgr_closure writing_action; |
| /** closure to start reading from the endpoint */ |
| grpc_iomgr_closure reading_action; |
| |
| /** 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)(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; |
| |
| grpc_iomgr_closure *send_done_closure; |
| grpc_iomgr_closure *recv_done_closure; |
| |
| /** window available for us to send to peer */ |
| gpr_int64 outgoing_window; |
| /** window available for peer to send to us - updated after parse */ |
| gpr_uint32 incoming_window; |
| /** stream ops the transport user would like to send */ |
| grpc_stream_op_buffer *outgoing_sopb; |
| /** 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' */ |
| grpc_chttp2_write_state write_state; |
| /** is this stream closed (boolean) */ |
| gpr_uint8 read_closed; |
| /** has this stream been cancelled? (boolean) */ |
| gpr_uint8 cancelled; |
| grpc_status_code cancelled_status; |
| /** have we told the upper layer that this stream is cancelled? */ |
| gpr_uint8 published_cancelled; |
| /** is this stream in the stream map? (boolean) */ |
| gpr_uint8 in_stream_map; |
| |
| /** stream state already published to the upper layer */ |
| grpc_stream_state published_state; |
| /** address to publish next stream state to */ |
| grpc_stream_state *publish_state; |
| /** pointer to sop buffer to fill in with new stream ops */ |
| grpc_stream_op_buffer *publish_sopb; |
| grpc_stream_op_buffer incoming_sopb; |
| |
| /** incoming metadata */ |
| grpc_chttp2_incoming_metadata_buffer incoming_metadata; |
| grpc_chttp2_incoming_metadata_live_op_buffer outstanding_metadata; |
| } grpc_chttp2_stream_global; |
| |
| typedef struct { |
| /** HTTP2 stream id for this stream, or zero if one has not been assigned */ |
| gpr_uint32 id; |
| /** sops that have passed flow control to be written */ |
| grpc_stream_op_buffer sopb; |
| /** how strongly should we indicate closure with the next write */ |
| grpc_chttp2_send_closed send_closed; |
| } 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; |
| /** incoming_window has been reduced by this much during parsing */ |
| gpr_uint32 incoming_window_delta; |
| /** window available for peer to send to us */ |
| gpr_uint32 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_uint64 outgoing_window_update; |
| |
| /** incoming metadata */ |
| grpc_chttp2_incoming_metadata_buffer incoming_metadata; |
| }; |
| |
| struct grpc_chttp2_stream { |
| 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); |
| void grpc_chttp2_perform_writes( |
| grpc_chttp2_transport_writing *transport_writing, grpc_endpoint *endpoint); |
| void grpc_chttp2_terminate_writing( |
| grpc_chttp2_transport_writing *transport_writing, int success); |
| void grpc_chttp2_cleanup_writing(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_chttp2_transport_parsing *transport_parsing, |
| gpr_slice slice); |
| void grpc_chttp2_publish_reads(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); |
| 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_add_incoming_window_updated( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_incoming_window_updated( |
| 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_remove_incoming_window_updated( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| |
| void grpc_chttp2_list_add_writing_stream( |
| grpc_chttp2_transport_writing *transport_writing, |
| grpc_chttp2_stream_writing *stream_writing); |
| 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_writable_window_update_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_writable_window_update_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| void grpc_chttp2_list_remove_writable_window_update_stream( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| |
| 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_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); |
| |
| void grpc_chttp2_list_add_cancelled_waiting_for_writing( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_cancelled_waiting_for_writing( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| void grpc_chttp2_list_add_read_write_state_changed( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global *stream_global); |
| int grpc_chttp2_list_pop_read_write_state_changed( |
| grpc_chttp2_transport_global *transport_global, |
| grpc_chttp2_stream_global **stream_global); |
| |
| /** schedule a closure to run without the transport lock taken */ |
| void grpc_chttp2_schedule_closure( |
| grpc_chttp2_transport_global *transport_global, grpc_iomgr_closure *closure, |
| int success); |
| |
| 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_chttp2_transport_parsing *transport_parsing, gpr_uint32 id); |
| |
| void grpc_chttp2_add_incoming_goaway( |
| 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_chttp2_transport_parsing *transport_parsing); |
| |
| #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 |
| |
| #define GRPC_CHTTP2_FLOWCTL_TRACE_STREAM(reason, transport, context, var, \ |
| delta) \ |
| if (!(grpc_flowctl_trace)) { \ |
| } else { \ |
| grpc_chttp2_flowctl_trace(__FILE__, __LINE__, reason, #context, #var, \ |
| transport->is_client, context->id, context->var, \ |
| delta); \ |
| } |
| |
| #define GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT(reason, context, var, delta) \ |
| if (!(grpc_flowctl_trace)) { \ |
| } else { \ |
| grpc_chttp2_flowctl_trace(__FILE__, __LINE__, reason, #context, #var, \ |
| context->is_client, 0, context->var, delta); \ |
| } |
| |
| void grpc_chttp2_flowctl_trace(const char *file, int line, const char *reason, |
| const char *context, const char *var, |
| int is_client, gpr_uint32 stream_id, |
| gpr_int64 current_value, gpr_int64 delta); |
| |
| #endif |