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Pods/gRPC-Core/include/grpc/impl/call.h

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+// Copyright 2023 The gRPC Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef GRPC_IMPL_CALL_H
+#define GRPC_IMPL_CALL_H
+
+#include <grpc/support/port_platform.h>
+
+#include "absl/functional/any_invocable.h"
+
+#include <grpc/grpc.h>
+
+// Run a callback in the call's EventEngine.
+// Internal-only
+void grpc_call_run_in_event_engine(const grpc_call* call,
+                                   absl::AnyInvocable<void()> cb);
+
+#endif /* GRPC_IMPL_CALL_H */

Pods/gRPC-Core/include/grpc/impl/channel_arg_names.h

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+// Copyright 2023 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef GRPC_IMPL_CHANNEL_ARG_NAMES_H
+#define GRPC_IMPL_CHANNEL_ARG_NAMES_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+// IWYU pragma: friend "src/.*"
+// IWYU pragma: friend "test/.*"
+
+/** \defgroup grpc_arg_keys
+ * Channel argument keys.
+ * \{
+ */
+/** If non-zero, enable census for tracing and stats collection. */
+#define GRPC_ARG_ENABLE_CENSUS "grpc.census"
+/** If non-zero, enable load reporting. */
+#define GRPC_ARG_ENABLE_LOAD_REPORTING "grpc.loadreporting"
+/** If non-zero, call metric recording is enabled. */
+#define GRPC_ARG_SERVER_CALL_METRIC_RECORDING \
+  "grpc.server_call_metric_recording"
+/** Request that optional features default to off (regardless of what they
+    usually default to) - to enable tight control over what gets enabled */
+#define GRPC_ARG_MINIMAL_STACK "grpc.minimal_stack"
+/** Maximum number of concurrent incoming streams to allow on a http2
+    connection. Int valued. */
+#define GRPC_ARG_MAX_CONCURRENT_STREAMS "grpc.max_concurrent_streams"
+/** Maximum message length that the channel can receive. Int valued, bytes.
+    -1 means unlimited. */
+#define GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH "grpc.max_receive_message_length"
+/** \deprecated For backward compatibility.
+ * Use GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH instead. */
+#define GRPC_ARG_MAX_MESSAGE_LENGTH GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH
+/** Maximum message length that the channel can send. Int valued, bytes.
+    -1 means unlimited. */
+#define GRPC_ARG_MAX_SEND_MESSAGE_LENGTH "grpc.max_send_message_length"
+/** Maximum time that a channel may have no outstanding rpcs, after which the
+ * server will close the connection. Int valued, milliseconds. INT_MAX means
+ * unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_IDLE_MS "grpc.max_connection_idle_ms"
+/** Maximum time that a channel may exist. Int valued, milliseconds.
+ * INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_MS "grpc.max_connection_age_ms"
+/** Grace period after the channel reaches its max age. Int valued,
+   milliseconds. INT_MAX means unlimited. */
+#define GRPC_ARG_MAX_CONNECTION_AGE_GRACE_MS "grpc.max_connection_age_grace_ms"
+/** Timeout after the last RPC finishes on the client channel at which the
+ * channel goes back into IDLE state. Int valued, milliseconds. INT_MAX means
+ * unlimited. The default value is 30 minutes and the min value is 1 second. */
+#define GRPC_ARG_CLIENT_IDLE_TIMEOUT_MS "grpc.client_idle_timeout_ms"
+/** Enable/disable support for per-message compression. Defaults to 1, unless
+    GRPC_ARG_MINIMAL_STACK is enabled, in which case it defaults to 0. */
+#define GRPC_ARG_ENABLE_PER_MESSAGE_COMPRESSION "grpc.per_message_compression"
+/** Experimental Arg. Enable/disable support for per-message decompression.
+   Defaults to 1. If disabled, decompression will not be performed and the
+   application will see the compressed message in the byte buffer. */
+#define GRPC_ARG_ENABLE_PER_MESSAGE_DECOMPRESSION \
+  "grpc.per_message_decompression"
+/** Enable/disable support for deadline checking. Defaults to 1, unless
+    GRPC_ARG_MINIMAL_STACK is enabled, in which case it defaults to 0 */
+#define GRPC_ARG_ENABLE_DEADLINE_CHECKS "grpc.enable_deadline_checking"
+/** Initial stream ID for http2 transports. Int valued. */
+#define GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER \
+  "grpc.http2.initial_sequence_number"
+/** Amount to read ahead on individual streams. Defaults to 64kb, larger
+    values can help throughput on high-latency connections.
+    NOTE: at some point we'd like to auto-tune this, and this parameter
+    will become a no-op. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES "grpc.http2.lookahead_bytes"
+/** How much memory to use for hpack decoding. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_DECODER \
+  "grpc.http2.hpack_table_size.decoder"
+/** How much memory to use for hpack encoding. Int valued, bytes. */
+#define GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_ENCODER \
+  "grpc.http2.hpack_table_size.encoder"
+/** How big a frame are we willing to receive via HTTP2.
+    Min 16384, max 16777215. Larger values give lower CPU usage for large
+    messages, but more head of line blocking for small messages. */
+#define GRPC_ARG_HTTP2_MAX_FRAME_SIZE "grpc.http2.max_frame_size"
+/** Should BDP probing be performed? */
+#define GRPC_ARG_HTTP2_BDP_PROBE "grpc.http2.bdp_probe"
+/** (DEPRECATED) Does not have any effect.
+    Earlier, this arg configured the minimum time between successive ping frames
+    without receiving any data/header frame, Int valued, milliseconds. This put
+    unnecessary constraints on the configuration of keepalive pings,
+    requiring users to set this channel arg along with
+    GRPC_ARG_KEEPALIVE_TIME_MS. This arg also limited the activity of the other
+    source of pings in gRPC Core - BDP pings, but BDP pings are only sent when
+    there is receive-side data activity, making this arg unuseful for BDP pings
+    too.  */
+#define GRPC_ARG_HTTP2_MIN_SENT_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_time_between_pings_ms"
+/** Minimum allowed time between a server receiving successive ping frames
+   without sending any data/header frame. Int valued, milliseconds
+ */
+#define GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS \
+  "grpc.http2.min_ping_interval_without_data_ms"
+/** Maximum time to allow a request to be:
+    (1) received by the server, but
+    (2) not requested by a RequestCall (in the completion queue based API)
+    before the request is cancelled */
+#define GRPC_ARG_SERVER_MAX_UNREQUESTED_TIME_IN_SERVER_SECONDS \
+  "grpc.server_max_unrequested_time_in_server"
+/** Channel arg to override the http2 :scheme header */
+#define GRPC_ARG_HTTP2_SCHEME "grpc.http2_scheme"
+/** How many pings can the client send before needing to send a
+   data/header frame? (0 indicates that an infinite number of
+   pings can be sent without sending a data frame or header frame) */
+#define GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA \
+  "grpc.http2.max_pings_without_data"
+/** How many misbehaving pings the server can bear before sending goaway and
+    closing the transport? (0 indicates that the server can bear an infinite
+    number of misbehaving pings) */
+#define GRPC_ARG_HTTP2_MAX_PING_STRIKES "grpc.http2.max_ping_strikes"
+/** How much data are we willing to queue up per stream if
+    GRPC_WRITE_BUFFER_HINT is set? This is an upper bound */
+#define GRPC_ARG_HTTP2_WRITE_BUFFER_SIZE "grpc.http2.write_buffer_size"
+/** Should we allow receipt of true-binary data on http2 connections?
+    Defaults to on (1) */
+#define GRPC_ARG_HTTP2_ENABLE_TRUE_BINARY "grpc.http2.true_binary"
+/** An experimental channel arg which determines whether the preferred crypto
+ * frame size http2 setting sent to the peer at startup. If set to 0 (false
+ * - default), the preferred frame size is not sent to the peer. Otherwise it
+ * sends a default preferred crypto frame size value of 4GB to the peer at
+ * the startup of each connection. */
+#define GRPC_ARG_EXPERIMENTAL_HTTP2_PREFERRED_CRYPTO_FRAME_SIZE \
+  "grpc.experimental.http2.enable_preferred_frame_size"
+/** After a duration of this time the client/server pings its peer to see if the
+    transport is still alive. Int valued, milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIME_MS "grpc.keepalive_time_ms"
+/** After waiting for a duration of this time, if the keepalive ping sender does
+    not receive the ping ack, it will close the transport. Int valued,
+    milliseconds. */
+#define GRPC_ARG_KEEPALIVE_TIMEOUT_MS "grpc.keepalive_timeout_ms"
+/** Is it permissible to send keepalive pings from the client without any
+   outstanding streams. Int valued, 0(false)/1(true). */
+#define GRPC_ARG_KEEPALIVE_PERMIT_WITHOUT_CALLS \
+  "grpc.keepalive_permit_without_calls"
+/** Default authority to pass if none specified on call construction. A string.
+ * */
+#define GRPC_ARG_DEFAULT_AUTHORITY "grpc.default_authority"
+/** Primary user agent: goes at the start of the user-agent metadata
+    sent on each request. A string. */
+#define GRPC_ARG_PRIMARY_USER_AGENT_STRING "grpc.primary_user_agent"
+/** Secondary user agent: goes at the end of the user-agent metadata
+    sent on each request. A string. */
+#define GRPC_ARG_SECONDARY_USER_AGENT_STRING "grpc.secondary_user_agent"
+/** The minimum time between subsequent connection attempts, in ms */
+#define GRPC_ARG_MIN_RECONNECT_BACKOFF_MS "grpc.min_reconnect_backoff_ms"
+/** The maximum time between subsequent connection attempts, in ms */
+#define GRPC_ARG_MAX_RECONNECT_BACKOFF_MS "grpc.max_reconnect_backoff_ms"
+/** The time between the first and second connection attempts, in ms */
+#define GRPC_ARG_INITIAL_RECONNECT_BACKOFF_MS \
+  "grpc.initial_reconnect_backoff_ms"
+/** Minimum amount of time between DNS resolutions, in ms */
+#define GRPC_ARG_DNS_MIN_TIME_BETWEEN_RESOLUTIONS_MS \
+  "grpc.dns_min_time_between_resolutions_ms"
+/** The timeout used on servers for finishing handshaking on an incoming
+    connection.  Defaults to 120 seconds. */
+#define GRPC_ARG_SERVER_HANDSHAKE_TIMEOUT_MS "grpc.server_handshake_timeout_ms"
+/** This *should* be used for testing only.
+    The caller of the secure_channel_create functions may override the target
+    name used for SSL host name checking using this channel argument which is of
+    type \a GRPC_ARG_STRING. If this argument is not specified, the name used
+    for SSL host name checking will be the target parameter (assuming that the
+    secure channel is an SSL channel). If this parameter is specified and the
+    underlying is not an SSL channel, it will just be ignored. */
+#define GRPC_SSL_TARGET_NAME_OVERRIDE_ARG "grpc.ssl_target_name_override"
+/** If non-zero, a pointer to a session cache (a pointer of type
+    grpc_ssl_session_cache*). (use grpc_ssl_session_cache_arg_vtable() to fetch
+    an appropriate pointer arg vtable) */
+#define GRPC_SSL_SESSION_CACHE_ARG "grpc.ssl_session_cache"
+/** If non-zero, it will determine the maximum frame size used by TSI's frame
+ *  protector.
+ */
+#define GRPC_ARG_TSI_MAX_FRAME_SIZE "grpc.tsi.max_frame_size"
+/** Maximum metadata size (soft limit), in bytes. Note this limit applies to the
+   max sum of all metadata key-value entries in a batch of headers. Some random
+   sample of requests between this limit and
+   `GRPC_ARG_ABSOLUTE_MAX_METADATA_SIZE` will be rejected. Defaults to maximum
+   of 8 KB and `GRPC_ARG_ABSOLUTE_MAX_METADATA_SIZE` * 0.8 (if set).
+ */
+#define GRPC_ARG_MAX_METADATA_SIZE "grpc.max_metadata_size"
+/** Maximum metadata size (hard limit), in bytes. Note this limit applies to the
+   max sum of all metadata key-value entries in a batch of headers. All requests
+   exceeding this limit will be rejected. Defaults to maximum of 16 KB and
+   `GRPC_ARG_MAX_METADATA_SIZE` * 1.25 (if set). */
+#define GRPC_ARG_ABSOLUTE_MAX_METADATA_SIZE "grpc.absolute_max_metadata_size"
+/** If non-zero, allow the use of SO_REUSEPORT if it's available (default 1) */
+#define GRPC_ARG_ALLOW_REUSEPORT "grpc.so_reuseport"
+/** If non-zero, a pointer to a buffer pool (a pointer of type
+ * grpc_resource_quota*). (use grpc_resource_quota_arg_vtable() to fetch an
+ * appropriate pointer arg vtable) */
+#define GRPC_ARG_RESOURCE_QUOTA "grpc.resource_quota"
+/** If non-zero, expand wildcard addresses to a list of local addresses. */
+#define GRPC_ARG_EXPAND_WILDCARD_ADDRS "grpc.expand_wildcard_addrs"
+/** Service config data in JSON form.
+    This value will be ignored if the name resolver returns a service config. */
+#define GRPC_ARG_SERVICE_CONFIG "grpc.service_config"
+/** Disable looking up the service config via the name resolver. */
+#define GRPC_ARG_SERVICE_CONFIG_DISABLE_RESOLUTION \
+  "grpc.service_config_disable_resolution"
+/** LB policy name. */
+#define GRPC_ARG_LB_POLICY_NAME "grpc.lb_policy_name"
+/** Cap for ring size in the ring_hash LB policy.  The min and max ring size
+    values set in the LB policy config will be capped to this value.
+    Default is 4096. */
+#define GRPC_ARG_RING_HASH_LB_RING_SIZE_CAP "grpc.lb.ring_hash.ring_size_cap"
+/** The grpc_socket_mutator instance that set the socket options. A pointer. */
+#define GRPC_ARG_SOCKET_MUTATOR "grpc.socket_mutator"
+/** The grpc_socket_factory instance to create and bind sockets. A pointer. */
+#define GRPC_ARG_SOCKET_FACTORY "grpc.socket_factory"
+/** The maximum amount of memory used by trace events per channel trace node.
+ * Once the maximum is reached, subsequent events will evict the oldest events
+ * from the buffer. The unit for this knob is bytes. Setting it to zero causes
+ * channel tracing to be disabled. */
+#define GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE \
+  "grpc.max_channel_trace_event_memory_per_node"
+/** If non-zero, gRPC library will track stats and information at at per channel
+ * level. Disabling channelz naturally disables channel tracing. The default
+ * is for channelz to be enabled. */
+#define GRPC_ARG_ENABLE_CHANNELZ "grpc.enable_channelz"
+/** If non-zero, Cronet transport will coalesce packets to fewer frames
+ * when possible. */
+#define GRPC_ARG_USE_CRONET_PACKET_COALESCING \
+  "grpc.use_cronet_packet_coalescing"
+/** Channel arg (integer) setting how large a slice to try and read from the
+   wire each time recvmsg (or equivalent) is called **/
+#define GRPC_ARG_TCP_READ_CHUNK_SIZE "grpc.experimental.tcp_read_chunk_size"
+/** Note this is not a "channel arg" key. This is the default slice size to use
+ * when trying to read from the wire if the GRPC_ARG_TCP_READ_CHUNK_SIZE
+ * channel arg is unspecified. */
+#define GRPC_TCP_DEFAULT_READ_SLICE_SIZE 8192
+#define GRPC_ARG_TCP_MIN_READ_CHUNK_SIZE \
+  "grpc.experimental.tcp_min_read_chunk_size"
+#define GRPC_ARG_TCP_MAX_READ_CHUNK_SIZE \
+  "grpc.experimental.tcp_max_read_chunk_size"
+/* TCP TX Zerocopy enable state: zero is disabled, non-zero is enabled. By
+   default, it is disabled. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_ENABLED \
+  "grpc.experimental.tcp_tx_zerocopy_enabled"
+/* TCP TX Zerocopy send threshold: only zerocopy if >= this many bytes sent. By
+   default, this is set to 16KB. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_SEND_BYTES_THRESHOLD \
+  "grpc.experimental.tcp_tx_zerocopy_send_bytes_threshold"
+/* TCP TX Zerocopy max simultaneous sends: limit for maximum number of pending
+   calls to tcp_write() using zerocopy. A tcp_write() is considered pending
+   until the kernel performs the zerocopy-done callback for all sendmsg() calls
+   issued by the tcp_write(). By default, this is set to 4. */
+#define GRPC_ARG_TCP_TX_ZEROCOPY_MAX_SIMULT_SENDS \
+  "grpc.experimental.tcp_tx_zerocopy_max_simultaneous_sends"
+/* Overrides the TCP socket recieve buffer size, SO_RCVBUF. */
+#define GRPC_ARG_TCP_RECEIVE_BUFFER_SIZE "grpc.tcp_receive_buffer_size"
+/* Timeout in milliseconds to use for calls to the grpclb load balancer.
+   If 0 or unset, the balancer calls will have no deadline. */
+#define GRPC_ARG_GRPCLB_CALL_TIMEOUT_MS "grpc.grpclb_call_timeout_ms"
+/* Specifies the xDS bootstrap config as a JSON string.
+   FOR TESTING PURPOSES ONLY -- DO NOT USE IN PRODUCTION.
+   This option allows controlling the bootstrap configuration on a
+   per-channel basis, which is useful in tests.  However, this results
+   in having a separate xDS client instance per channel rather than
+   using the global instance, which is not the intended way to use xDS.
+   Currently, this will (a) add unnecessary load on the xDS server and
+   (b) break use of CSDS, and there may be additional side effects in
+   the future. */
+#define GRPC_ARG_TEST_ONLY_DO_NOT_USE_IN_PROD_XDS_BOOTSTRAP_CONFIG \
+  "grpc.TEST_ONLY_DO_NOT_USE_IN_PROD.xds_bootstrap_config"
+/* Timeout in milliseconds to wait for the serverlist from the grpclb load
+   balancer before using fallback backend addresses from the resolver.
+   If 0, enter fallback mode immediately. Default value is 10000. */
+#define GRPC_ARG_GRPCLB_FALLBACK_TIMEOUT_MS "grpc.grpclb_fallback_timeout_ms"
+/* Experimental Arg. Channel args to be used for the control-plane channel
+ * created to the grpclb load balancers. This is a pointer arg whose value is a
+ * grpc_channel_args object. If unset, most channel args from the parent channel
+ * will be propagated to the grpclb channel. */
+#define GRPC_ARG_EXPERIMENTAL_GRPCLB_CHANNEL_ARGS \
+  "grpc.experimental.grpclb_channel_args"
+/* Timeout in milliseconds to wait for the child of a specific priority to
+   complete its initial connection attempt before the priority LB policy fails
+   over to the next priority. Default value is 10 seconds. */
+#define GRPC_ARG_PRIORITY_FAILOVER_TIMEOUT_MS \
+  "grpc.priority_failover_timeout_ms"
+/** If non-zero, grpc server's cronet compression workaround will be enabled */
+#define GRPC_ARG_WORKAROUND_CRONET_COMPRESSION \
+  "grpc.workaround.cronet_compression"
+/** String defining the optimization target for a channel.
+    Can be: "latency"    - attempt to minimize latency at the cost of throughput
+            "blend"      - try to balance latency and throughput
+            "throughput" - attempt to maximize throughput at the expense of
+                           latency
+    Defaults to "blend". In the current implementation "blend" is equivalent to
+    "latency". */
+#define GRPC_ARG_OPTIMIZATION_TARGET "grpc.optimization_target"
+/** Enables retry functionality.  Defaults to true.  When enabled,
+    transparent retries will be performed as appropriate, and configurable
+    retries are enabled when they are configured via the service config.
+    For details, see:
+      https://github.com/grpc/proposal/blob/master/A6-client-retries.md
+    NOTE: Hedging functionality is not yet implemented, so those
+          fields in the service config will currently be ignored.  See
+          also the GRPC_ARG_EXPERIMENTAL_ENABLE_HEDGING arg below.
+ */
+#define GRPC_ARG_ENABLE_RETRIES "grpc.enable_retries"
+/** Enables hedging functionality, as described in:
+      https://github.com/grpc/proposal/blob/master/A6-client-retries.md
+    Default is currently false, since this functionality is not yet
+    fully implemented.
+    NOTE: This channel arg is experimental and will eventually be removed.
+          Once hedging functionality has been implemented and proves stable,
+          this arg will be removed, and the hedging functionality will
+          be enabled via the GRPC_ARG_ENABLE_RETRIES arg above. */
+#define GRPC_ARG_EXPERIMENTAL_ENABLE_HEDGING "grpc.experimental.enable_hedging"
+/** Per-RPC retry buffer size, in bytes. Default is 256 KiB. */
+#define GRPC_ARG_PER_RPC_RETRY_BUFFER_SIZE "grpc.per_rpc_retry_buffer_size"
+/** Channel arg that carries the bridged objective c object for custom metrics
+ * logging filter. */
+#define GRPC_ARG_MOBILE_LOG_CONTEXT "grpc.mobile_log_context"
+/** If non-zero, client authority filter is disabled for the channel */
+#define GRPC_ARG_DISABLE_CLIENT_AUTHORITY_FILTER \
+  "grpc.disable_client_authority_filter"
+/** If set to zero, disables use of http proxies. Enabled by default. */
+#define GRPC_ARG_ENABLE_HTTP_PROXY "grpc.enable_http_proxy"
+/** Channel arg to set http proxy per channel. If set, the channel arg
+ *  value will be preferred over the environment variable settings. */
+#define GRPC_ARG_HTTP_PROXY "grpc.http_proxy"
+/** Specifies an HTTP proxy to use for individual addresses.
+ *  The proxy must be specified as an IP address, not a DNS name.
+ *  If set, the channel arg value will be preferred over the environment
+ *  variable settings. */
+#define GRPC_ARG_ADDRESS_HTTP_PROXY "grpc.address_http_proxy"
+/** Comma separated list of addresses or address ranges that are behind the
+ *  address HTTP proxy.
+ */
+#define GRPC_ARG_ADDRESS_HTTP_PROXY_ENABLED_ADDRESSES \
+  "grpc.address_http_proxy_enabled_addresses"
+/** If set to non zero, surfaces the user agent string to the server. User
+    agent is surfaced by default. */
+#define GRPC_ARG_SURFACE_USER_AGENT "grpc.surface_user_agent"
+/** If set, inhibits health checking (which may be enabled via the
+ *  service config.) */
+#define GRPC_ARG_INHIBIT_HEALTH_CHECKING "grpc.inhibit_health_checking"
+/** If enabled, the channel's DNS resolver queries for SRV records.
+ *  This is useful only when using the "grpclb" load balancing policy,
+ *  as described in the following documents:
+ *   https://github.com/grpc/proposal/blob/master/A5-grpclb-in-dns.md
+ *   https://github.com/grpc/proposal/blob/master/A24-lb-policy-config.md
+ *   https://github.com/grpc/proposal/blob/master/A26-grpclb-selection.md
+ *  Note that this works only with the "ares" DNS resolver; it isn't supported
+ *  by the "native" DNS resolver. */
+#define GRPC_ARG_DNS_ENABLE_SRV_QUERIES "grpc.dns_enable_srv_queries"
+/** If set, determines an upper bound on the number of milliseconds that the
+ * c-ares based DNS resolver will wait on queries before cancelling them.
+ * The default value is 120,000. Setting this to "0" will disable the
+ * overall timeout entirely. Note that this doesn't include internal c-ares
+ * timeouts/backoff/retry logic, and so the actual DNS resolution may time out
+ * sooner than the value specified here. */
+#define GRPC_ARG_DNS_ARES_QUERY_TIMEOUT_MS "grpc.dns_ares_query_timeout"
+/** If set, uses a local subchannel pool within the channel. Otherwise, uses the
+ * global subchannel pool. */
+#define GRPC_ARG_USE_LOCAL_SUBCHANNEL_POOL "grpc.use_local_subchannel_pool"
+/** gRPC Objective-C channel pooling domain string. */
+#define GRPC_ARG_CHANNEL_POOL_DOMAIN "grpc.channel_pooling_domain"
+/** gRPC Objective-C channel pooling id. */
+#define GRPC_ARG_CHANNEL_ID "grpc.channel_id"
+/** Channel argument for grpc_authorization_policy_provider. If present, enables
+    gRPC authorization check. */
+#define GRPC_ARG_AUTHORIZATION_POLICY_PROVIDER \
+  "grpc.authorization_policy_provider"
+/** EXPERIMENTAL. Updates to a server's configuration from a config fetcher (for
+ * example, listener updates from xDS) cause all older connections to be
+ * gracefully shut down (i.e., "drained") with a grace period configured by this
+ * channel arg. Int valued, milliseconds. Defaults to 10 minutes.*/
+#define GRPC_ARG_SERVER_CONFIG_CHANGE_DRAIN_GRACE_TIME_MS \
+  "grpc.experimental.server_config_change_drain_grace_time_ms"
+/** Configure the Differentiated Services Code Point used on outgoing packets.
+ *  Integer value ranging from 0 to 63. */
+#define GRPC_ARG_DSCP "grpc.dscp"
+/** Connection Attempt Delay for use in Happy Eyeballs, in milliseconds.
+ *  Defaults to 250ms. */
+#define GRPC_ARG_HAPPY_EYEBALLS_CONNECTION_ATTEMPT_DELAY_MS \
+  "grpc.happy_eyeballs_connection_attempt_delay_ms"
+/** It accepts a MemoryAllocatorFactory as input and If specified, it forces
+ * the default event engine to use memory allocators created using the provided
+ * factory. */
+#define GRPC_ARG_EVENT_ENGINE_USE_MEMORY_ALLOCATOR_FACTORY \
+  "grpc.event_engine_use_memory_allocator_factory"
+/** \} */
+
+#endif /* GRPC_IMPL_CHANNEL_ARG_NAMES_H */

Pods/gRPC-Core/include/grpc/impl/codegen/atm.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_H
+#define GRPC_IMPL_CODEGEN_ATM_H
+
+// IWYU pragma: private, include <grpc/support/atm.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/atm.h>
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_H */

Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_atomic.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
+#define GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
+
+// IWYU pragma: private, include <grpc/support/atm.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/atm_gcc_atomic.h>
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H */

Pods/gRPC-Core/include/grpc/impl/codegen/atm_gcc_sync.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
+#define GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H
+
+// IWYU pragma: private, include <grpc/support/atm.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/atm_gcc_sync.h>
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H */

Pods/gRPC-Core/include/grpc/impl/codegen/atm_windows.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
+#define GRPC_IMPL_CODEGEN_ATM_WINDOWS_H
+
+// IWYU pragma: private, include <grpc/support/atm.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/atm_windows.h>
+
+#endif /* GRPC_IMPL_CODEGEN_ATM_WINDOWS_H */

Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/byte_buffer.h>
+
+#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_H */

Pods/gRPC-Core/include/grpc/impl/codegen/byte_buffer_reader.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
+#define GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/byte_buffer_reader.h>
+
+#endif /* GRPC_IMPL_CODEGEN_BYTE_BUFFER_READER_H */

Pods/gRPC-Core/include/grpc/impl/codegen/compression_types.h

@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H
+#define GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H
+
+// IWYU pragma: private, include <grpc/compression.h>
+// IWYU pragma: friend "src/.*"
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/impl/compression_types.h>
+
+#endif /* GRPC_IMPL_CODEGEN_COMPRESSION_TYPES_H */

Pods/gRPC-Core/include/grpc/impl/codegen/connectivity_state.h

@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H
+#define GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+// IWYU pragma: friend "src/.*"
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/impl/connectivity_state.h>
+
+#endif /* GRPC_IMPL_CODEGEN_CONNECTIVITY_STATE_H */

Pods/gRPC-Core/include/grpc/impl/codegen/fork.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_FORK_H
+#define GRPC_IMPL_CODEGEN_FORK_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/fork.h>
+
+#endif /* GRPC_IMPL_CODEGEN_FORK_H */

Pods/gRPC-Core/include/grpc/impl/codegen/gpr_types.h

@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_GPR_TYPES_H
+#define GRPC_IMPL_CODEGEN_GPR_TYPES_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+// IWYU pragma: friend "src/.*"
+
+#include <grpc/impl/codegen/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/time.h>
+
+#endif /* GRPC_IMPL_CODEGEN_GPR_TYPES_H */

Pods/gRPC-Core/include/grpc/impl/codegen/grpc_types.h

@@ -0,0 +1,30 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_GRPC_TYPES_H
+#define GRPC_IMPL_CODEGEN_GRPC_TYPES_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+// IWYU pragma: friend "src/.*"
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/impl/grpc_types.h>
+
+#endif /* GRPC_IMPL_CODEGEN_GRPC_TYPES_H */

Pods/gRPC-Core/include/grpc/impl/codegen/log.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_LOG_H
+#define GRPC_IMPL_CODEGEN_LOG_H
+
+// IWYU pragma: private
+
+#include <grpc/impl/codegen/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/log.h>
+
+#endif /* GRPC_IMPL_CODEGEN_LOG_H */

Pods/gRPC-Core/include/grpc/impl/codegen/port_platform.h

@@ -0,0 +1,27 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_PORT_PLATFORM_H
+#define GRPC_IMPL_CODEGEN_PORT_PLATFORM_H
+
+// IWYU pragma: private
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/port_platform.h>
+
+#endif /* GRPC_IMPL_CODEGEN_PORT_PLATFORM_H */

Pods/gRPC-Core/include/grpc/impl/codegen/propagation_bits.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H
+#define GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/impl/propagation_bits.h>
+
+#endif /* GRPC_IMPL_CODEGEN_PROPAGATION_BITS_H */

Pods/gRPC-Core/include/grpc/impl/codegen/slice.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SLICE_H
+#define GRPC_IMPL_CODEGEN_SLICE_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/impl/slice_type.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SLICE_H */

Pods/gRPC-Core/include/grpc/impl/codegen/status.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_STATUS_H
+#define GRPC_IMPL_CODEGEN_STATUS_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/status.h>
+
+#endif /* GRPC_IMPL_CODEGEN_STATUS_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_H
+#define GRPC_IMPL_CODEGEN_SYNC_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync_abseil.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H
+#define GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync_abseil.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_ABSEIL_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync_custom.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+#define GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync_custom.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_CUSTOM_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync_generic.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_GENERIC_H
+#define GRPC_IMPL_CODEGEN_SYNC_GENERIC_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync_generic.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_GENERIC_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync_posix.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_POSIX_H
+#define GRPC_IMPL_CODEGEN_SYNC_POSIX_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync_posix.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_POSIX_H */

Pods/gRPC-Core/include/grpc/impl/codegen/sync_windows.h

@@ -0,0 +1,29 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H
+#define GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H
+
+// IWYU pragma: private, include <grpc/support/sync.h>
+
+#include <grpc/support/port_platform.h>
+
+/// TODO(chengyuc): Remove this file after solving compatibility.
+#include <grpc/support/sync_windows.h>
+
+#endif /* GRPC_IMPL_CODEGEN_SYNC_WINDOWS_H */

Pods/gRPC-Core/include/grpc/impl/compression_types.h

@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_COMPRESSION_TYPES_H
+#define GRPC_IMPL_COMPRESSION_TYPES_H
+
+// IWYU pragma: private, include <grpc/compression.h>
+// IWYU pragma: friend "src/.*"
+
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** To be used as initial metadata key for the request of a concrete compression
+ * algorithm */
+#define GRPC_COMPRESSION_REQUEST_ALGORITHM_MD_KEY \
+  "grpc-internal-encoding-request"
+
+/** To be used in channel arguments.
+ *
+ * \addtogroup grpc_arg_keys
+ * \{ */
+/** Default compression algorithm for the channel.
+ * Its value is an int from the \a grpc_compression_algorithm enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM \
+  "grpc.default_compression_algorithm"
+/** Default compression level for the channel.
+ * Its value is an int from the \a grpc_compression_level enum. */
+#define GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL "grpc.default_compression_level"
+/** Compression algorithms supported by the channel.
+ * Its value is a bitset (an int). Bits correspond to algorithms in \a
+ * grpc_compression_algorithm. For example, its LSB corresponds to
+ * GRPC_COMPRESS_NONE, the next bit to GRPC_COMPRESS_DEFLATE, etc.
+ * Unset bits disable support for the algorithm. By default all algorithms are
+ * supported. It's not possible to disable GRPC_COMPRESS_NONE (the attempt will
+ * be ignored). */
+#define GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET \
+  "grpc.compression_enabled_algorithms_bitset"
+/** \} */
+
+/** The various compression algorithms supported by gRPC (not sorted by
+ * compression level) */
+typedef enum {
+  GRPC_COMPRESS_NONE = 0,
+  GRPC_COMPRESS_DEFLATE,
+  GRPC_COMPRESS_GZIP,
+  /* TODO(ctiller): snappy */
+  GRPC_COMPRESS_ALGORITHMS_COUNT
+} grpc_compression_algorithm;
+
+/** Compression levels allow a party with knowledge of its peer's accepted
+ * encodings to request compression in an abstract way. The level-algorithm
+ * mapping is performed internally and depends on the peer's supported
+ * compression algorithms. */
+typedef enum {
+  GRPC_COMPRESS_LEVEL_NONE = 0,
+  GRPC_COMPRESS_LEVEL_LOW,
+  GRPC_COMPRESS_LEVEL_MED,
+  GRPC_COMPRESS_LEVEL_HIGH,
+  GRPC_COMPRESS_LEVEL_COUNT
+} grpc_compression_level;
+
+typedef struct grpc_compression_options {
+  /** All algs are enabled by default. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_ENABLED_ALGORITHMS_BITSET
+   */
+  uint32_t enabled_algorithms_bitset;
+
+  /** The default compression level. It'll be used in the absence of call
+   * specific settings. This option corresponds to the channel
+   * argument key behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_LEVEL. If present,
+   * takes precedence over \a default_algorithm.
+   * TODO(dgq): currently only available for server channels. */
+  struct grpc_compression_options_default_level {
+    int is_set;
+    grpc_compression_level level;
+  } default_level;
+
+  /** The default message compression algorithm. It'll be used in the absence of
+   * call specific settings. This option corresponds to the channel argument key
+   * behind \a GRPC_COMPRESSION_CHANNEL_DEFAULT_ALGORITHM. */
+  struct grpc_compression_options_default_algorithm {
+    int is_set;
+    grpc_compression_algorithm algorithm;
+  } default_algorithm;
+} grpc_compression_options;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_COMPRESSION_TYPES_H */

Pods/gRPC-Core/include/grpc/impl/connectivity_state.h

@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_CONNECTIVITY_STATE_H
+#define GRPC_IMPL_CONNECTIVITY_STATE_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+// IWYU pragma: friend "src/.*"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Connectivity state of a channel. */
+typedef enum {
+  /** channel is idle */
+  GRPC_CHANNEL_IDLE,
+  /** channel is connecting */
+  GRPC_CHANNEL_CONNECTING,
+  /** channel is ready for work */
+  GRPC_CHANNEL_READY,
+  /** channel has seen a failure but expects to recover */
+  GRPC_CHANNEL_TRANSIENT_FAILURE,
+  /** channel has seen a failure that it cannot recover from */
+  GRPC_CHANNEL_SHUTDOWN
+} grpc_connectivity_state;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_CONNECTIVITY_STATE_H */

Pods/gRPC-Core/include/grpc/impl/grpc_types.h

@@ -0,0 +1,489 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_GRPC_TYPES_H
+#define GRPC_IMPL_GRPC_TYPES_H
+
+// IWYU pragma: private, include <grpc/grpc.h>
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+#include <grpc/impl/channel_arg_names.h>
+#include <grpc/impl/compression_types.h>
+#include <grpc/slice.h>
+#include <grpc/status.h>
+#include <grpc/support/time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  GRPC_BB_RAW
+  /** Future types may include GRPC_BB_PROTOBUF, etc. */
+} grpc_byte_buffer_type;
+
+typedef struct grpc_byte_buffer {
+  void* reserved;
+  grpc_byte_buffer_type type;
+  union grpc_byte_buffer_data {
+    struct /* internal */ {
+      void* reserved[8];
+    } reserved;
+    struct grpc_compressed_buffer {
+      grpc_compression_algorithm compression;
+      grpc_slice_buffer slice_buffer;
+    } raw;
+  } data;
+} grpc_byte_buffer;
+
+/** Completion Queues enable notification of the completion of
+ * asynchronous actions. */
+typedef struct grpc_completion_queue grpc_completion_queue;
+
+/** The Channel interface allows creation of Call objects. */
+typedef struct grpc_channel grpc_channel;
+
+/** A server listens to some port and responds to request calls */
+typedef struct grpc_server grpc_server;
+
+/** A Call represents an RPC. When created, it is in a configuration state
+    allowing properties to be set until it is invoked. After invoke, the Call
+    can have messages written to it and read from it. */
+typedef struct grpc_call grpc_call;
+
+/** The Socket Mutator interface allows changes on socket options */
+typedef struct grpc_socket_mutator grpc_socket_mutator;
+
+/** The Socket Factory interface creates and binds sockets */
+typedef struct grpc_socket_factory grpc_socket_factory;
+
+/** Type specifier for grpc_arg */
+typedef enum {
+  GRPC_ARG_STRING,
+  GRPC_ARG_INTEGER,
+  GRPC_ARG_POINTER
+} grpc_arg_type;
+
+typedef struct grpc_arg_pointer_vtable {
+  void* (*copy)(void* p);
+  void (*destroy)(void* p);
+  int (*cmp)(void* p, void* q);
+} grpc_arg_pointer_vtable;
+
+/** A single argument... each argument has a key and a value
+
+    A note on naming keys:
+      Keys are namespaced into groups, usually grouped by library, and are
+      keys for module XYZ are named XYZ.key1, XYZ.key2, etc. Module names must
+      be restricted to the regex [A-Za-z][_A-Za-z0-9]{,15}.
+      Key names must be restricted to the regex [A-Za-z][_A-Za-z0-9]{,47}.
+
+    GRPC core library keys are prefixed by grpc.
+
+    Library authors are strongly encouraged to \#define symbolic constants for
+    their keys so that it's possible to change them in the future. */
+typedef struct {
+  grpc_arg_type type;
+  char* key;
+  union grpc_arg_value {
+    char* string;
+    int integer;
+    struct grpc_arg_pointer {
+      void* p;
+      const grpc_arg_pointer_vtable* vtable;
+    } pointer;
+  } value;
+} grpc_arg;
+
+/** An array of arguments that can be passed around.
+
+    Used to set optional channel-level configuration.
+    These configuration options are modelled as key-value pairs as defined
+    by grpc_arg; keys are strings to allow easy backwards-compatible extension
+    by arbitrary parties. All evaluation is performed at channel creation
+    time (i.e. the keys and values in this structure need only live through the
+    creation invocation).
+
+    However, if one of the args has grpc_arg_type==GRPC_ARG_POINTER, then the
+    grpc_arg_pointer_vtable must live until the channel args are done being
+    used by core (i.e. when the object for use with which they were passed
+    is destroyed).
+
+    See the description of the \ref grpc_arg_keys "available args" for more
+    details. */
+typedef struct {
+  size_t num_args;
+  grpc_arg* args;
+} grpc_channel_args;
+
+/** Result of a grpc call. If the caller satisfies the prerequisites of a
+    particular operation, the grpc_call_error returned will be GRPC_CALL_OK.
+    Receiving any other value listed here is an indication of a bug in the
+    caller. */
+typedef enum grpc_call_error {
+  /** everything went ok */
+  GRPC_CALL_OK = 0,
+  /** something failed, we don't know what */
+  GRPC_CALL_ERROR,
+  /** this method is not available on the server */
+  GRPC_CALL_ERROR_NOT_ON_SERVER,
+  /** this method is not available on the client */
+  GRPC_CALL_ERROR_NOT_ON_CLIENT,
+  /** this method must be called before server_accept */
+  GRPC_CALL_ERROR_ALREADY_ACCEPTED,
+  /** this method must be called before invoke */
+  GRPC_CALL_ERROR_ALREADY_INVOKED,
+  /** this method must be called after invoke */
+  GRPC_CALL_ERROR_NOT_INVOKED,
+  /** this call is already finished
+      (writes_done or write_status has already been called) */
+  GRPC_CALL_ERROR_ALREADY_FINISHED,
+  /** there is already an outstanding read/write operation on the call */
+  GRPC_CALL_ERROR_TOO_MANY_OPERATIONS,
+  /** the flags value was illegal for this call */
+  GRPC_CALL_ERROR_INVALID_FLAGS,
+  /** invalid metadata was passed to this call */
+  GRPC_CALL_ERROR_INVALID_METADATA,
+  /** invalid message was passed to this call */
+  GRPC_CALL_ERROR_INVALID_MESSAGE,
+  /** completion queue for notification has not been registered
+   * with the server */
+  GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE,
+  /** this batch of operations leads to more operations than allowed */
+  GRPC_CALL_ERROR_BATCH_TOO_BIG,
+  /** payload type requested is not the type registered */
+  GRPC_CALL_ERROR_PAYLOAD_TYPE_MISMATCH,
+  /** completion queue has been shutdown */
+  GRPC_CALL_ERROR_COMPLETION_QUEUE_SHUTDOWN
+} grpc_call_error;
+
+/** Default send/receive message size limits in bytes. -1 for unlimited. */
+/** TODO(roth) Make this match the default receive limit after next release */
+#define GRPC_DEFAULT_MAX_SEND_MESSAGE_LENGTH (-1)
+#define GRPC_DEFAULT_MAX_RECV_MESSAGE_LENGTH (4 * 1024 * 1024)
+
+/** Write Flags: */
+/** Hint that the write may be buffered and need not go out on the wire
+    immediately. GRPC is free to buffer the message until the next non-buffered
+    write, or until writes_done, but it need not buffer completely or at all. */
+#define GRPC_WRITE_BUFFER_HINT (0x00000001u)
+/** Force compression to be disabled for a particular write
+    (start_write/add_metadata). Illegal on invoke/accept. */
+#define GRPC_WRITE_NO_COMPRESS (0x00000002u)
+/** Force this message to be written to the socket before completing it */
+#define GRPC_WRITE_THROUGH (0x00000004u)
+/** Mask of all valid flags. */
+#define GRPC_WRITE_USED_MASK \
+  (GRPC_WRITE_BUFFER_HINT | GRPC_WRITE_NO_COMPRESS | GRPC_WRITE_THROUGH)
+
+/** Initial metadata flags */
+/** These flags are to be passed to the `grpc_op::flags` field */
+/** Signal that the call should not return UNAVAILABLE before it has started */
+#define GRPC_INITIAL_METADATA_WAIT_FOR_READY (0x00000020u)
+/** Signal that GRPC_INITIAL_METADATA_WAIT_FOR_READY was explicitly set
+    by the calling application. */
+#define GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET (0x00000080u)
+
+/** Mask of all valid flags */
+#define GRPC_INITIAL_METADATA_USED_MASK                  \
+  (GRPC_INITIAL_METADATA_WAIT_FOR_READY_EXPLICITLY_SET | \
+   GRPC_INITIAL_METADATA_WAIT_FOR_READY | GRPC_WRITE_THROUGH)
+
+/** A single metadata element */
+typedef struct grpc_metadata {
+  /** the key, value values are expected to line up with grpc_mdelem: if
+     changing them, update metadata.h at the same time. */
+  grpc_slice key;
+  grpc_slice value;
+
+  /** The following fields are reserved for grpc internal use.
+      There is no need to initialize them, and they will be set to garbage
+      during calls to grpc. */
+  struct /* internal */ {
+    void* obfuscated[4];
+  } internal_data;
+} grpc_metadata;
+
+/** The type of completion (for grpc_event) */
+typedef enum grpc_completion_type {
+  /** Shutting down */
+  GRPC_QUEUE_SHUTDOWN,
+  /** No event before timeout */
+  GRPC_QUEUE_TIMEOUT,
+  /** Operation completion */
+  GRPC_OP_COMPLETE
+} grpc_completion_type;
+
+/** The result of an operation.
+
+    Returned by a completion queue when the operation started with tag. */
+typedef struct grpc_event {
+  /** The type of the completion. */
+  grpc_completion_type type;
+  /** If the grpc_completion_type is GRPC_OP_COMPLETE, this field indicates
+      whether the operation was successful or not; 0 in case of failure and
+      non-zero in case of success.
+      If grpc_completion_type is GRPC_QUEUE_SHUTDOWN or GRPC_QUEUE_TIMEOUT, this
+      field is guaranteed to be 0 */
+  int success;
+  /** The tag passed to grpc_call_start_batch etc to start this operation.
+      *Only* GRPC_OP_COMPLETE has a tag. For all other grpc_completion_type
+      values, tag is uninitialized. */
+  void* tag;
+} grpc_event;
+
+typedef struct {
+  size_t count;
+  size_t capacity;
+  grpc_metadata* metadata;
+} grpc_metadata_array;
+
+typedef struct {
+  grpc_slice method;
+  grpc_slice host;
+  gpr_timespec deadline;
+} grpc_call_details;
+
+typedef enum {
+  /** Send initial metadata: one and only one instance MUST be sent for each
+      call, unless the call was cancelled - in which case this can be skipped.
+      This op completes after all bytes of metadata have been accepted by
+      outgoing flow control. */
+  GRPC_OP_SEND_INITIAL_METADATA = 0,
+  /** Send a message: 0 or more of these operations can occur for each call.
+      This op completes after all bytes for the message have been accepted by
+      outgoing flow control. */
+  GRPC_OP_SEND_MESSAGE,
+  /** Send a close from the client: one and only one instance MUST be sent from
+      the client, unless the call was cancelled - in which case this can be
+      skipped. This op completes after all bytes for the call
+      (including the close) have passed outgoing flow control. */
+  GRPC_OP_SEND_CLOSE_FROM_CLIENT,
+  /** Send status from the server: one and only one instance MUST be sent from
+      the server unless the call was cancelled - in which case this can be
+      skipped. This op completes after all bytes for the call
+      (including the status) have passed outgoing flow control. */
+  GRPC_OP_SEND_STATUS_FROM_SERVER,
+  /** Receive initial metadata: one and only one MUST be made on the client,
+      must not be made on the server.
+      This op completes after all initial metadata has been read from the
+      peer. */
+  GRPC_OP_RECV_INITIAL_METADATA,
+  /** Receive a message: 0 or more of these operations can occur for each call.
+      This op completes after all bytes of the received message have been
+      read, or after a half-close has been received on this call. */
+  GRPC_OP_RECV_MESSAGE,
+  /** Receive status on the client: one and only one must be made on the client.
+      This operation always succeeds, meaning ops paired with this operation
+      will also appear to succeed, even though they may not have. In that case
+      the status will indicate some failure.
+      This op completes after all activity on the call has completed. */
+  GRPC_OP_RECV_STATUS_ON_CLIENT,
+  /** Receive close on the server: one and only one must be made on the
+      server. This op completes after the close has been received by the
+      server. This operation always succeeds, meaning ops paired with
+      this operation will also appear to succeed, even though they may not
+      have. */
+  GRPC_OP_RECV_CLOSE_ON_SERVER
+} grpc_op_type;
+
+struct grpc_byte_buffer;
+
+/** Operation data: one field for each op type (except SEND_CLOSE_FROM_CLIENT
+   which has no arguments) */
+typedef struct grpc_op {
+  /** Operation type, as defined by grpc_op_type */
+  grpc_op_type op;
+  /** Write flags bitset for grpc_begin_messages */
+  uint32_t flags;
+  /** Reserved for future usage */
+  void* reserved;
+  union grpc_op_data {
+    /** Reserved for future usage */
+    struct /* internal */ {
+      void* reserved[8];
+    } reserved;
+    struct grpc_op_send_initial_metadata {
+      size_t count;
+      grpc_metadata* metadata;
+      /** If \a is_set, \a compression_level will be used for the call.
+       * Otherwise, \a compression_level won't be considered */
+      struct grpc_op_send_initial_metadata_maybe_compression_level {
+        uint8_t is_set;
+        grpc_compression_level level;
+      } maybe_compression_level;
+    } send_initial_metadata;
+    struct grpc_op_send_message {
+      /** This op takes ownership of the slices in send_message.  After
+       * a call completes, the contents of send_message are not guaranteed
+       * and likely empty.  The original owner should still call
+       * grpc_byte_buffer_destroy() on this object however.
+       */
+      struct grpc_byte_buffer* send_message;
+    } send_message;
+    struct grpc_op_send_status_from_server {
+      size_t trailing_metadata_count;
+      grpc_metadata* trailing_metadata;
+      grpc_status_code status;
+      /** optional: set to NULL if no details need sending, non-NULL if they do
+       * pointer will not be retained past the start_batch call
+       */
+      grpc_slice* status_details;
+    } send_status_from_server;
+    /** ownership of the array is with the caller, but ownership of the elements
+        stays with the call object (ie key, value members are owned by the call
+        object, recv_initial_metadata->array is owned by the caller).
+        After the operation completes, call grpc_metadata_array_destroy on this
+        value, or reuse it in a future op. */
+    struct grpc_op_recv_initial_metadata {
+      grpc_metadata_array* recv_initial_metadata;
+    } recv_initial_metadata;
+    /** ownership of the byte buffer is moved to the caller; the caller must
+        call grpc_byte_buffer_destroy on this value, or reuse it in a future op.
+        The returned byte buffer will be NULL if trailing metadata was
+        received instead of a message.
+       */
+    struct grpc_op_recv_message {
+      struct grpc_byte_buffer** recv_message;
+    } recv_message;
+    struct grpc_op_recv_status_on_client {
+      /** ownership of the array is with the caller, but ownership of the
+          elements stays with the call object (ie key, value members are owned
+          by the call object, trailing_metadata->array is owned by the caller).
+          After the operation completes, call grpc_metadata_array_destroy on
+          this value, or reuse it in a future op. */
+      grpc_metadata_array* trailing_metadata;
+      grpc_status_code* status;
+      grpc_slice* status_details;
+      /** If this is not nullptr, it will be populated with the full fidelity
+       * error string for debugging purposes. The application is responsible
+       * for freeing the data by using gpr_free(). */
+      const char** error_string;
+    } recv_status_on_client;
+    struct grpc_op_recv_close_on_server {
+      /** out argument, set to 1 if the call failed at the server for
+          a reason other than a non-OK status (cancel, deadline
+          exceeded, network failure, etc.), 0 otherwise (RPC processing ran to
+          completion and was able to provide any status from the server) */
+      int* cancelled;
+    } recv_close_on_server;
+  } data;
+} grpc_op;
+
+/** Information requested from the channel. */
+typedef struct {
+  /** If non-NULL, will be set to point to a string indicating the LB
+   * policy name.  Caller takes ownership. */
+  char** lb_policy_name;
+  /** If non-NULL, will be set to point to a string containing the
+   * service config used by the channel in JSON form. */
+  char** service_config_json;
+} grpc_channel_info;
+
+typedef struct grpc_resource_quota grpc_resource_quota;
+
+/** Completion queues internally MAY maintain a set of file descriptors in a
+    structure called 'pollset'. This enum specifies if a completion queue has an
+    associated pollset and any restrictions on the type of file descriptors that
+    can be present in the pollset.
+
+    I/O progress can only be made when grpc_completion_queue_next() or
+    grpc_completion_queue_pluck() are called on the completion queue (unless the
+    grpc_cq_polling_type is GRPC_CQ_NON_POLLING) and hence it is very important
+    to actively call these APIs */
+typedef enum {
+  /** The completion queue will have an associated pollset and there is no
+      restriction on the type of file descriptors the pollset may contain */
+  GRPC_CQ_DEFAULT_POLLING,
+
+  /** Similar to GRPC_CQ_DEFAULT_POLLING except that the completion queues will
+      not contain any 'listening file descriptors' (i.e file descriptors used to
+      listen to incoming channels) */
+  GRPC_CQ_NON_LISTENING,
+
+  /** The completion queue will not have an associated pollset. Note that
+      grpc_completion_queue_next() or grpc_completion_queue_pluck() MUST still
+      be called to pop events from the completion queue; it is not required to
+      call them actively to make I/O progress */
+  GRPC_CQ_NON_POLLING
+} grpc_cq_polling_type;
+
+/** Specifies the type of APIs to use to pop events from the completion queue */
+typedef enum {
+  /** Events are popped out by calling grpc_completion_queue_next() API ONLY */
+  GRPC_CQ_NEXT,
+
+  /** Events are popped out by calling grpc_completion_queue_pluck() API ONLY*/
+  GRPC_CQ_PLUCK,
+
+  /** Events trigger a callback specified as the tag */
+  GRPC_CQ_CALLBACK
+} grpc_cq_completion_type;
+
+/** Specifies an interface class to be used as a tag for callback-based
+ * completion queues. This can be used directly, as the first element of a
+ * struct in C, or as a base class in C++. Its "run" value should be assigned to
+ * some non-member function, such as a static method. */
+typedef struct grpc_completion_queue_functor {
+  /** The run member specifies a function that will be called when this
+      tag is extracted from the completion queue. Its arguments will be a
+      pointer to this functor and a boolean that indicates whether the
+      operation succeeded (non-zero) or failed (zero) */
+  void (*functor_run)(struct grpc_completion_queue_functor*, int);
+
+  /** The inlineable member specifies whether this functor can be run inline.
+      This should only be used for trivial internally-defined functors. */
+  int inlineable;
+
+  /** The following fields are not API. They are meant for internal use. */
+  int internal_success;
+  struct grpc_completion_queue_functor* internal_next;
+} grpc_completion_queue_functor;
+
+#define GRPC_CQ_CURRENT_VERSION 2
+#define GRPC_CQ_VERSION_MINIMUM_FOR_CALLBACKABLE 2
+typedef struct grpc_completion_queue_attributes {
+  /** The version number of this structure. More fields might be added to this
+     structure in future. */
+  int version; /** Set to GRPC_CQ_CURRENT_VERSION */
+
+  grpc_cq_completion_type cq_completion_type;
+
+  grpc_cq_polling_type cq_polling_type;
+
+  /* END OF VERSION 1 CQ ATTRIBUTES */
+
+  /* START OF VERSION 2 CQ ATTRIBUTES */
+  /** When creating a callbackable CQ, pass in a functor to get invoked when
+   * shutdown is complete */
+  grpc_completion_queue_functor* cq_shutdown_cb;
+
+  /* END OF VERSION 2 CQ ATTRIBUTES */
+} grpc_completion_queue_attributes;
+
+/** The completion queue factory structure is opaque to the callers of grpc */
+typedef struct grpc_completion_queue_factory grpc_completion_queue_factory;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_GRPC_TYPES_H */

Pods/gRPC-Core/include/grpc/impl/propagation_bits.h

@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_PROPAGATION_BITS_H
+#define GRPC_IMPL_PROPAGATION_BITS_H
+
+// IWYU pragma: private
+
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Propagation bits: this can be bitwise or-ed to form propagation_mask for
+ * grpc_call */
+/** Propagate deadline */
+#define GRPC_PROPAGATE_DEADLINE ((uint32_t)1)
+/** Propagate census context */
+#define GRPC_PROPAGATE_CENSUS_STATS_CONTEXT ((uint32_t)2)
+#define GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT ((uint32_t)4)
+/** Propagate cancellation */
+#define GRPC_PROPAGATE_CANCELLATION ((uint32_t)8)
+
+/** Default propagation mask: clients of the core API are encouraged to encode
+   deltas from this in their implementations... ie write:
+   GRPC_PROPAGATE_DEFAULTS & ~GRPC_PROPAGATE_DEADLINE to disable deadline
+   propagation. Doing so gives flexibility in the future to define new
+   propagation types that are default inherited or not. */
+#define GRPC_PROPAGATE_DEFAULTS                                                \
+  ((uint32_t)((                                                                \
+      0xffff | GRPC_PROPAGATE_DEADLINE | GRPC_PROPAGATE_CENSUS_STATS_CONTEXT | \
+      GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT | GRPC_PROPAGATE_CANCELLATION)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_IMPL_PROPAGATION_BITS_H */

Pods/gRPC-Core/include/grpc/impl/slice_type.h

@@ -0,0 +1,112 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_IMPL_SLICE_TYPE_H
+#define GRPC_IMPL_SLICE_TYPE_H
+
+// IWYU pragma: private, include <grpc/slice.h>
+
+#include <grpc/support/port_platform.h>
+
+#include <stddef.h>
+
+typedef struct grpc_slice grpc_slice;
+
+/** Slice API
+
+   A slice represents a contiguous reference counted array of bytes.
+   It is cheap to take references to a slice, and it is cheap to create a
+   slice pointing to a subset of another slice.
+
+   The data-structure for slices is exposed here to allow non-gpr code to
+   build slices from whatever data they have available.
+
+   When defining interfaces that handle slices, care should be taken to define
+   reference ownership semantics (who should call unref?) and mutability
+   constraints (is the callee allowed to modify the slice?) */
+
+/* Inlined half of grpc_slice is allowed to expand the size of the overall type
+   by this many bytes */
+#define GRPC_SLICE_INLINE_EXTRA_SIZE sizeof(void*)
+
+#define GRPC_SLICE_INLINED_SIZE \
+  (sizeof(size_t) + sizeof(uint8_t*) - 1 + GRPC_SLICE_INLINE_EXTRA_SIZE)
+
+struct grpc_slice_refcount;
+/** A grpc_slice s, if initialized, represents the byte range
+   s.bytes[0..s.length-1].
+
+   It can have an associated ref count which has a destruction routine to be run
+   when the ref count reaches zero (see grpc_slice_new() and grp_slice_unref()).
+   Multiple grpc_slice values may share a ref count.
+
+   If the slice does not have a refcount, it represents an inlined small piece
+   of data that is copied by value.
+
+   As a special case, a slice can be given refcount == uintptr_t(1), meaning
+   that the slice represents external data that is not refcounted. */
+struct grpc_slice {
+  struct grpc_slice_refcount* refcount;
+  union grpc_slice_data {
+    struct grpc_slice_refcounted {
+      size_t length;
+      uint8_t* bytes;
+    } refcounted;
+    struct grpc_slice_inlined {
+      uint8_t length;
+      uint8_t bytes[GRPC_SLICE_INLINED_SIZE];
+    } inlined;
+  } data;
+};
+
+#define GRPC_SLICE_BUFFER_INLINE_ELEMENTS 6
+
+/** Represents an expandable array of slices, to be interpreted as a
+   single item. */
+typedef struct grpc_slice_buffer {
+  /** This is for internal use only. External users (i.e any code outside grpc
+   * core) MUST NOT use this field */
+  grpc_slice* base_slices;
+
+  /** slices in the array (Points to the first valid grpc_slice in the array) */
+  grpc_slice* slices;
+  /** the number of slices in the array */
+  size_t count;
+  /** the number of slices allocated in the array. External users (i.e any code
+   * outside grpc core) MUST NOT use this field */
+  size_t capacity;
+  /** the combined length of all slices in the array */
+  size_t length;
+  /** inlined elements to avoid allocations */
+  grpc_slice inlined[GRPC_SLICE_BUFFER_INLINE_ELEMENTS];
+} grpc_slice_buffer;
+
+#define GRPC_SLICE_START_PTR(slice)                 \
+  ((slice).refcount ? (slice).data.refcounted.bytes \
+                    : (slice).data.inlined.bytes)
+#define GRPC_SLICE_LENGTH(slice)                     \
+  ((slice).refcount ? (slice).data.refcounted.length \
+                    : (slice).data.inlined.length)
+#define GRPC_SLICE_SET_LENGTH(slice, newlen)                              \
+  ((slice).refcount ? ((slice).data.refcounted.length = (size_t)(newlen)) \
+                    : ((slice).data.inlined.length = (uint8_t)(newlen)))
+#define GRPC_SLICE_END_PTR(slice) \
+  GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(slice)
+#define GRPC_SLICE_IS_EMPTY(slice) (GRPC_SLICE_LENGTH(slice) == 0)
+
+#endif /* GRPC_IMPL_SLICE_TYPE_H */