mirror of
https://github.com/kidfromjupiter/nearby.git
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87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <windows.h>
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#include <memory>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/functional/any_invocable.h"
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#include "absl/synchronization/mutex.h"
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#include "internal/platform/exception.h"
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#include "internal/platform/implementation/wifi_lan.h"
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#include "internal/platform/implementation/windows/nearby_server_socket.h"
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#include "internal/platform/implementation/windows/network_info.h"
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#include "internal/platform/implementation/windows/socket_address.h"
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#include "internal/platform/implementation/windows/wifi_lan.h"
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#include "internal/platform/logging.h"
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#include "internal/platform/service_address.h"
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namespace nearby::windows {
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// Returns the first IPv4 address.
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std::string WifiLanServerSocket::GetIPAddress() const {
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// Just pick an IP address from the list of available addresses.
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const NetworkInfo& network_info = NetworkInfo::GetNetworkInfo();
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for (const NetworkInfo::InterfaceInfo& net_interface :
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network_info.GetInterfaces()) {
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if (net_interface.type != InterfaceType::kWifi &&
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net_interface.type != InterfaceType::kEthernet) {
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continue;
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}
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for (const SocketAddress& v4_address : net_interface.ipv4_addresses) {
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// Ignore link local addresses.
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if (v4_address.IsV4LinkLocal()) {
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continue;
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}
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ServiceAddress service_address = v4_address.ToServiceAddress(0);
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return std::string(service_address.address.begin(),
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service_address.address.end());
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}
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}
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return "";
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}
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// Blocks until either:
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// - at least one incoming connection request is available, or
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// - ServerSocket is closed.
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// On success, returns connected socket, ready to exchange data.
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// Returns nullptr on error.
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// Once error is reported, it is permanent, and ServerSocket has to be closed.
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std::unique_ptr<api::WifiLanSocket> WifiLanServerSocket::Accept() {
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auto client_socket = server_socket_.Accept();
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if (client_socket == nullptr) {
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return nullptr;
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}
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LOG(INFO) << __func__ << ": Accepted a remote connection.";
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return std::make_unique<WifiLanSocket>(std::move(client_socket));
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}
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bool WifiLanServerSocket::Listen(int port) {
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// Listen on all interfaces.
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SocketAddress address;
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address.set_port(port);
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if (!server_socket_.Listen(address)) {
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LOG(ERROR) << "Failed to listen socket at port:" << port;
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return false;
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}
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return true;
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}
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} // namespace nearby::windows
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