posix_engine_listener_utils.cc | Explore in Territory

// 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.

#include <grpc/support/port_platform.h>

#include "src/core/lib/event_engine/posix_engine/posix_engine_listener_utils.h"

#include <limits.h>
#include <stdio.h>
#include <stdlib.h>

#include <cstring>
#include <string>

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

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

#include "src/core/lib/event_engine/posix_engine/tcp_socket_utils.h"
#include "src/core/lib/event_engine/tcp_socket_utils.h"
#include "src/core/lib/gprpp/crash.h"  // IWYU pragma: keep
#include "src/core/lib/gprpp/status_helper.h"
#include "src/core/lib/iomgr/port.h"
#include "src/core/lib/iomgr/socket_mutator.h"

#define MIN_SAFE_ACCEPT_QUEUE_SIZE …

#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON
#include <errno.h>       // IWYU pragma: keep
#include <ifaddrs.h>     // IWYU pragma: keep
#include <netinet/in.h>  // IWYU pragma: keep
#include <sys/socket.h>  // IWYU pragma: keep
#include <unistd.h>      // IWYU pragma: keep

#include "absl/strings/str_cat.h"
#endif

namespace grpc_event_engine {
namespace experimental {

#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON

namespace {

ResolvedAddress;
ListenerSocket;

#ifdef GRPC_HAVE_IFADDRS

// Bind to "::" to get a port number not used by any address.
absl::StatusOr<int> GetUnusedPort() { … }

bool SystemHasIfAddrs() { … }

#else  // GRPC_HAVE_IFADDRS

bool SystemHasIfAddrs() { return false; }

#endif  // GRPC_HAVE_IFADDRS

// get max listen queue size on linux
int InitMaxAcceptQueueSize() { … }

int GetMaxAcceptQueueSize() { … }

// Prepare a recently-created socket for listening.
absl::Status PrepareSocket(const PosixTcpOptions& options,
                           ListenerSocket& socket) { … }

}  // namespace

absl::StatusOr<ListenerSocket> CreateAndPrepareListenerSocket(
    const PosixTcpOptions& options, const ResolvedAddress& addr) { … }

absl::StatusOr<int> ListenerContainerAddAllLocalAddresses(
    ListenerSocketsContainer& listener_sockets, const PosixTcpOptions& options,
    int requested_port) { … }

absl::StatusOr<int> ListenerContainerAddWildcardAddresses(
    ListenerSocketsContainer& listener_sockets, const PosixTcpOptions& options,
    int requested_port) { … }

#else  // GRPC_POSIX_SOCKET_UTILS_COMMON

absl::StatusOr<ListenerSocketsContainer::ListenerSocket>
CreateAndPrepareListenerSocket(const PosixTcpOptions& /*options*/,
                               const grpc_event_engine::experimental::
                                   EventEngine::ResolvedAddress& /*addr*/) {
  grpc_core::Crash(
      "CreateAndPrepareListenerSocket is not supported on this platform");
}

absl::StatusOr<int> ListenerContainerAddWildcardAddresses(
    ListenerSocketsContainer& /*listener_sockets*/,
    const PosixTcpOptions& /*options*/, int /*requested_port*/) {
  grpc_core::Crash(
      "ListenerContainerAddWildcardAddresses is not supported on this "
      "platform");
}

absl::StatusOr<int> ListenerContainerAddAllLocalAddresses(
    ListenerSocketsContainer& /*listener_sockets*/,
    const PosixTcpOptions& /*options*/, int /*requested_port*/) {
  grpc_core::Crash(
      "ListenerContainerAddAllLocalAddresses is not supported on this "
      "platform");
}

#endif  // GRPC_POSIX_SOCKET_UTILS_COMMON

}  // namespace experimental
}  // namespace grpc_event_engine
chromium/third_party/grpc/src/src/core/lib/event_engine/posix_engine/posix_engine_listener_utils.cc
