static void perform_op_locked(grpc_chttp2_transport_global *transport_global, grpc_chttp2_stream_global *stream_global, grpc_transport_op *op) { if (op->cancel_with_status != GRPC_STATUS_OK) { cancel_from_api(transport_global, stream_global, op->cancel_with_status); } if (op->send_ops) { GPR_ASSERT(stream_global->outgoing_sopb == NULL); stream_global->send_done_closure = op->on_done_send; if (!stream_global->cancelled) { stream_global->outgoing_sopb = op->send_ops; if (op->is_last_send && stream_global->write_state == GRPC_WRITE_STATE_OPEN) { stream_global->write_state = GRPC_WRITE_STATE_QUEUED_CLOSE; } if (stream_global->id == 0) { GRPC_CHTTP2_IF_TRACING(gpr_log( GPR_DEBUG, "HTTP:%s: New grpc_chttp2_stream %p waiting for concurrency", transport_global->is_client ? "CLI" : "SVR", stream_global)); grpc_chttp2_list_add_waiting_for_concurrency(transport_global, stream_global); maybe_start_some_streams(transport_global); } else if (stream_global->outgoing_window > 0) { grpc_chttp2_list_add_writable_stream(transport_global, stream_global); } } else { grpc_sopb_reset(op->send_ops); grpc_chttp2_schedule_closure(transport_global, stream_global->send_done_closure, 0); } } if (op->recv_ops) { GPR_ASSERT(stream_global->publish_sopb == NULL); GPR_ASSERT(stream_global->published_state != GRPC_STREAM_CLOSED); stream_global->recv_done_closure = op->on_done_recv; stream_global->publish_sopb = op->recv_ops; stream_global->publish_sopb->nops = 0; stream_global->publish_state = op->recv_state; grpc_chttp2_incoming_metadata_live_op_buffer_end( &stream_global->outstanding_metadata); grpc_chttp2_list_add_read_write_state_changed(transport_global, stream_global); grpc_chttp2_list_add_writable_window_update_stream(transport_global, stream_global); } if (op->bind_pollset) { add_to_pollset_locked(TRANSPORT_FROM_GLOBAL(transport_global), op->bind_pollset); } if (op->on_consumed) { grpc_chttp2_schedule_closure(transport_global, op->on_consumed, 1); } }
void grpc_chttp2_publish_reads( grpc_chttp2_transport_global *transport_global, grpc_chttp2_transport_parsing *transport_parsing) { grpc_chttp2_stream_global *stream_global; grpc_chttp2_stream_parsing *stream_parsing; /* transport_parsing->last_incoming_stream_id is used as last-grpc_chttp2_stream-id when sending GOAWAY frame. https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-6.8 says that last-grpc_chttp2_stream-id is peer-initiated grpc_chttp2_stream ID. So, since we don't have server pushed streams, client should send GOAWAY last-grpc_chttp2_stream-id=0 in this case. */ if (!transport_parsing->is_client) { transport_global->last_incoming_stream_id = transport_parsing->incoming_stream_id; } /* copy parsing qbuf to global qbuf */ gpr_slice_buffer_move_into(&transport_parsing->qbuf, &transport_global->qbuf); /* update global settings */ if (transport_parsing->settings_updated) { memcpy(transport_global->settings[GRPC_PEER_SETTINGS], transport_parsing->settings, sizeof(transport_parsing->settings)); transport_parsing->settings_updated = 0; } /* update settings based on ack if received */ if (transport_parsing->settings_ack_received) { memcpy(transport_global->settings[GRPC_ACKED_SETTINGS], transport_global->settings[GRPC_SENT_SETTINGS], GRPC_CHTTP2_NUM_SETTINGS * sizeof(gpr_uint32)); transport_parsing->settings_ack_received = 0; } /* move goaway to the global state if we received one (it will be published later */ if (transport_parsing->goaway_received) { grpc_chttp2_add_incoming_goaway(transport_global, transport_parsing->goaway_error, transport_parsing->goaway_text); transport_parsing->goaway_text = gpr_empty_slice(); transport_parsing->goaway_received = 0; } /* propagate flow control tokens to global state */ if (transport_parsing->outgoing_window_update) { GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( "parsed", transport_global, outgoing_window, transport_parsing->outgoing_window_update); GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( "parsed", transport_parsing, outgoing_window_update, -(gpr_int64)transport_parsing->outgoing_window_update); transport_global->outgoing_window += transport_parsing->outgoing_window_update; transport_parsing->outgoing_window_update = 0; } if (transport_parsing->incoming_window_delta) { GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( "parsed", transport_global, incoming_window, -(gpr_int64)transport_parsing->incoming_window_delta); GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( "parsed", transport_parsing, incoming_window_delta, -(gpr_int64)transport_parsing->incoming_window_delta); transport_global->incoming_window -= transport_parsing->incoming_window_delta; transport_parsing->incoming_window_delta = 0; } /* for each stream that saw an update, fixup global state */ while (grpc_chttp2_list_pop_parsing_seen_stream( transport_global, transport_parsing, &stream_global, &stream_parsing)) { /* update incoming flow control window */ if (stream_parsing->incoming_window_delta) { GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( "parsed", transport_parsing, stream_global, incoming_window, -(gpr_int64)stream_parsing->incoming_window_delta); GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( "parsed", transport_parsing, stream_parsing, incoming_window_delta, -(gpr_int64)stream_parsing->incoming_window_delta); GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( "parsed", transport_parsing, stream_global, max_recv_bytes, -(gpr_int64)stream_parsing->incoming_window_delta); stream_global->incoming_window -= stream_parsing->incoming_window_delta; GPR_ASSERT(stream_global->max_recv_bytes >= stream_parsing->incoming_window_delta); stream_global->max_recv_bytes -= stream_parsing->incoming_window_delta; stream_parsing->incoming_window_delta = 0; grpc_chttp2_list_add_writable_window_update_stream(transport_global, stream_global); } /* update outgoing flow control window */ if (stream_parsing->outgoing_window_update) { int was_zero = stream_global->outgoing_window <= 0; int is_zero; GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("parsed", transport_parsing, stream_global, outgoing_window, stream_parsing->outgoing_window_update); GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( "parsed", transport_parsing, stream_parsing, outgoing_window_update, -(gpr_int64)stream_parsing->outgoing_window_update); stream_global->outgoing_window += stream_parsing->outgoing_window_update; stream_parsing->outgoing_window_update = 0; is_zero = stream_global->outgoing_window <= 0; if (was_zero && !is_zero) { grpc_chttp2_list_add_writable_stream(transport_global, stream_global); } } /* updating closed status */ if (stream_parsing->received_close) { stream_global->read_closed = 1; grpc_chttp2_list_add_read_write_state_changed(transport_global, stream_global); } if (stream_parsing->saw_rst_stream) { stream_global->cancelled = 1; stream_global->cancelled_status = grpc_chttp2_http2_error_to_grpc_status( stream_parsing->rst_stream_reason); if (stream_parsing->rst_stream_reason == GRPC_CHTTP2_NO_ERROR) { stream_global->published_cancelled = 1; } grpc_chttp2_list_add_read_write_state_changed(transport_global, stream_global); } /* publish incoming stream ops */ if (stream_parsing->data_parser.incoming_sopb.nops > 0) { grpc_incoming_metadata_buffer_move_to_referencing_sopb( &stream_parsing->incoming_metadata, &stream_global->incoming_metadata, &stream_parsing->data_parser.incoming_sopb); grpc_sopb_move_to(&stream_parsing->data_parser.incoming_sopb, &stream_global->incoming_sopb); grpc_chttp2_list_add_read_write_state_changed(transport_global, stream_global); } } }