chromium/third_party/grpc/src/src/core/lib/event_engine/posix_engine/tcp_socket_utils.h

// Copyright 2022 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_SRC_CORE_LIB_EVENT_ENGINE_POSIX_ENGINE_TCP_SOCKET_UTILS_H
#define GRPC_SRC_CORE_LIB_EVENT_ENGINE_POSIX_ENGINE_TCP_SOCKET_UTILS_H

#include <grpc/support/port_platform.h>

#include <functional>
#include <string>
#include <utility>

#include "absl/status/status.h"
#include "absl/status/statusor.h"

#include <grpc/event_engine/endpoint_config.h>
#include <grpc/event_engine/event_engine.h>
#include <grpc/grpc.h>
#include <grpc/support/log.h>

#include "src/core/lib/gprpp/ref_counted_ptr.h"
#include "src/core/lib/iomgr/port.h"
#include "src/core/lib/iomgr/socket_mutator.h"
#include "src/core/lib/resource_quota/resource_quota.h"

#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON
#include <sys/socket.h>
#endif

#ifdef GRPC_LINUX_ERRQUEUE
#ifndef SO_ZEROCOPY
#define SO_ZEROCOPY …
#endif
#ifndef SO_EE_ORIGIN_ZEROCOPY
#define SO_EE_ORIGIN_ZEROCOPY …
#endif
#endif  // ifdef GRPC_LINUX_ERRQUEUE

namespace grpc_event_engine {
namespace experimental {

struct PosixTcpOptions { … };

PosixTcpOptions TcpOptionsFromEndpointConfig(
    const grpc_event_engine::experimental::EndpointConfig& config);

// a wrapper for accept or accept4
int Accept4(int sockfd,
            grpc_event_engine::experimental::EventEngine::ResolvedAddress& addr,
            int nonblock, int cloexec);

// Unlink the path pointed to by the given address if it refers to UDS path.
void UnlinkIfUnixDomainSocket(
    const EventEngine::ResolvedAddress& resolved_addr);

class PosixSocketWrapper { … };

struct PosixSocketWrapper::PosixSocketCreateResult { … };

}  // namespace experimental
}  // namespace grpc_event_engine

#endif  // GRPC_SRC_CORE_LIB_EVENT_ENGINE_POSIX_ENGINE_TCP_SOCKET_UTILS_H