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Don't initiate writes on setting pushes

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pull/11552/head
ncteisen 8 years ago
parent cf8c67c00b
commit 08cefa0408
1 changed files with 23 additions and 19 deletions
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  1. 42
      src/core/ext/transport/chttp2/transport/chttp2_transport.c

42
src/core/ext/transport/chttp2/transport/chttp2_transport.c
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@ -91,8 +91,9 @@ static void read_action_locked(grpc_exec_ctx *exec_ctx, void *t,
static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs,
grpc_error *error);
/** Set a transport level setting, and push it to our peer */
static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
grpc_chttp2_setting_id id, uint32_t value);
static void queue_setting_update(grpc_exec_ctx *exec_ctx,
grpc_chttp2_transport *t,
grpc_chttp2_setting_id id, uint32_t value);
static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
grpc_chttp2_stream *s, grpc_error *error);
@ -342,15 +343,16 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
/* configure http2 the way we like it */
if (is_client) {
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_ENABLE_PUSH, 0);
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 0);
queue_setting_update(exec_ctx, t, GRPC_CHTTP2_SETTINGS_ENABLE_PUSH, 0);
queue_setting_update(exec_ctx, t,
GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 0);
}
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
DEFAULT_WINDOW);
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
DEFAULT_MAX_HEADER_LIST_SIZE);
push_setting(exec_ctx, t,
GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA, 1);
queue_setting_update(exec_ctx, t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
DEFAULT_WINDOW);
queue_setting_update(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE,
DEFAULT_MAX_HEADER_LIST_SIZE);
queue_setting_update(exec_ctx, t,
GRPC_CHTTP2_SETTINGS_GRPC_ALLOW_TRUE_BINARY_METADATA, 1);
t->ping_policy = (grpc_chttp2_repeated_ping_policy){
.max_pings_without_data = DEFAULT_MAX_PINGS_BETWEEN_DATA,
@ -517,8 +519,8 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
int value = grpc_channel_arg_get_integer(
&channel_args->args[i], settings_map[j].integer_options);
if (value >= 0) {
push_setting(exec_ctx, t, settings_map[j].setting_id,
(uint32_t)value);
queue_setting_update(exec_ctx, t, settings_map[j].setting_id,
(uint32_t)value);
}
}
break;
@ -929,8 +931,11 @@ static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp,
GPR_TIMER_END("terminate_writing_with_lock", 0);
}
static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
grpc_chttp2_setting_id id, uint32_t value) {
// Dirties an HTTP2 setting to be sent out next time a writing path occurs.
// If the change needs to occur immediately, manually initiate a write.
static void queue_setting_update(grpc_exec_ctx *exec_ctx,
grpc_chttp2_transport *t,
grpc_chttp2_setting_id id, uint32_t value) {
const grpc_chttp2_setting_parameters *sp =
&grpc_chttp2_settings_parameters[id];
uint32_t use_value = GPR_CLAMP(value, sp->min_value, sp->max_value);
@ -941,7 +946,6 @@ static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
if (use_value != t->settings[GRPC_LOCAL_SETTINGS][id]) {
t->settings[GRPC_LOCAL_SETTINGS][id] = use_value;
t->dirtied_local_settings = 1;
grpc_chttp2_initiate_write(exec_ctx, t, "push_setting");
}
}
@ -2107,8 +2111,8 @@ static void update_bdp(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
gpr_log(GPR_DEBUG, "%s: update initial window size to %d", t->peer_string,
(int)bdp);
}
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
(uint32_t)bdp);
queue_setting_update(exec_ctx, t, GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE,
(uint32_t)bdp);
}
static void update_frame(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
@ -2127,8 +2131,8 @@ static void update_frame(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t,
gpr_log(GPR_DEBUG, "%s: update max_frame size to %d", t->peer_string,
(int)frame_size);
}
push_setting(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE,
(uint32_t)frame_size);
queue_setting_update(exec_ctx, t, GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE,
(uint32_t)frame_size);
}
static grpc_error *try_http_parsing(grpc_exec_ctx *exec_ctx,

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