core, yuzu: Address first part of review comments

src/core/announce_multiplayer_session.cpp

@@ -31,7 +31,7 @@ AnnounceMultiplayerSession::AnnounceMultiplayerSession(Network::RoomNetwork& roo
 }
 
 WebService::WebResult AnnounceMultiplayerSession::Register() {
-    std::shared_ptr<Network::Room> room = room_network.GetRoom().lock();
+    auto room = room_network.GetRoom().lock();
     if (!room) {
         return WebService::WebResult{WebService::WebResult::Code::LibError,
                                      "Network is not initialized", ""};
@@ -102,7 +102,7 @@ void AnnounceMultiplayerSession::UpdateBackendData(std::shared_ptr<Network::Room
 void AnnounceMultiplayerSession::AnnounceMultiplayerLoop() {
     // Invokes all current bound error callbacks.
     const auto ErrorCallback = [this](WebService::WebResult result) {
-        std::lock_guard<std::mutex> lock(callback_mutex);
+        std::lock_guard lock(callback_mutex);
         for (auto callback : error_callbacks) {
             (*callback)(result);
         }
@@ -120,7 +120,7 @@ void AnnounceMultiplayerSession::AnnounceMultiplayerLoop() {
     std::future<WebService::WebResult> future;
     while (!shutdown_event.WaitUntil(update_time)) {
         update_time += announce_time_interval;
-        std::shared_ptr<Network::Room> room = room_network.GetRoom().lock();
+        auto room = room_network.GetRoom().lock();
         if (!room) {
             break;
         }

src/core/hle/service/nifm/nifm.cpp

@@ -381,6 +381,7 @@ void IGeneralService::GetCurrentIpAddress(Kernel::HLERequestContext& ctx) {
     rb.Push(ResultSuccess);
     rb.PushRaw(*ipv4);
 }
+
 void IGeneralService::CreateTemporaryNetworkProfile(Kernel::HLERequestContext& ctx) {
     LOG_DEBUG(Service_NIFM, "called");
 

src/core/internal_network/network.cpp

@@ -352,8 +352,8 @@ std::optional<IPv4Address> GetHostIPv4Address() {
         return {};
     }
 
-    char ip_addr[16] = {};
-    ASSERT(inet_ntop(AF_INET, &interface->ip_address, ip_addr, sizeof(ip_addr)) != nullptr);
+    std::array<char, 16> ip_addr = {};
+    ASSERT(inet_ntop(AF_INET, &interface->ip_address, ip_addr.data(), sizeof(ip_addr)) != nullptr);
     return TranslateIPv4(interface->ip_address);
 }
 
@@ -402,9 +402,9 @@ Socket::Socket(Socket&& rhs) noexcept {
 }
 
 template <typename T>
-Errno Socket::SetSockOpt(SOCKET _fd, int option, T value) {
+Errno Socket::SetSockOpt(SOCKET fd_, int option, T value) {
     const int result =
-        setsockopt(_fd, SOL_SOCKET, option, reinterpret_cast<const char*>(&value), sizeof(value));
+        setsockopt(fd_, SOL_SOCKET, option, reinterpret_cast<const char*>(&value), sizeof(value));
     if (result != SOCKET_ERROR) {
         return Errno::SUCCESS;
     }

src/core/internal_network/socket_proxy.cpp

@@ -30,19 +30,19 @@ void ProxySocket::HandleProxyPacket(const ProxyPacket& packet) {
         closed) {
         return;
     }
-    std::lock_guard<std::mutex> guard(packets_mutex);
+    std::lock_guard guard(packets_mutex);
     received_packets.push(packet);
 }
 
 template <typename T>
-Errno ProxySocket::SetSockOpt(SOCKET _fd, int option, T value) {
+Errno ProxySocket::SetSockOpt(SOCKET fd_, int option, T value) {
     socket_options[option] = reinterpret_cast<const char*>(&value);
     return Errno::SUCCESS;
 }
 
 Errno ProxySocket::Initialize(Domain domain, Type type, Protocol socket_protocol) {
     protocol = socket_protocol;
-    socket_options[0x1008] = reinterpret_cast<const char*>(&type);
+    SetSockOpt(fd, SO_TYPE, type);
 
     return Errno::SUCCESS;
 }
@@ -101,7 +101,7 @@ std::pair<s32, Errno> ProxySocket::RecvFrom(int flags, std::vector<u8>& message,
     ASSERT(message.size() < static_cast<size_t>(std::numeric_limits<int>::max()));
 
     {
-        std::lock_guard<std::mutex> guard(packets_mutex);
+        std::lock_guard guard(packets_mutex);
         if (received_packets.size() > 0) {
             return ReceivePacket(flags, message, addr, message.size());
         }
@@ -115,7 +115,7 @@ std::pair<s32, Errno> ProxySocket::RecvFrom(int flags, std::vector<u8>& message,
         return {-1, Errno::AGAIN};
     }
 
-    std::lock_guard<std::mutex> guard(packets_mutex);
+    std::lock_guard guard(packets_mutex);
     if (received_packets.size() > 0) {
         return ReceivePacket(flags, message, addr, message.size());
     }

src/core/internal_network/socket_proxy.h

@@ -14,7 +14,7 @@ namespace Network {
 
 class ProxySocket : public SocketBase {
 public:
-    ProxySocket(RoomNetwork& room_network_) noexcept;
+    explicit ProxySocket(RoomNetwork& room_network_) noexcept;
     ~ProxySocket() override;
 
     ProxySocket(const ProxySocket&) = delete;
@@ -82,6 +82,7 @@ public:
 
     bool IsOpened() const override;
 
+private:
     bool broadcast = false;
     bool closed = false;
     u32 send_timeout = 0;

src/core/internal_network/sockets.h

@@ -32,7 +32,7 @@ public:
         std::unique_ptr<SocketBase> socket;
         SockAddrIn sockaddr_in;
     };
-    virtual ~SocketBase() {}
+    virtual ~SocketBase() = default;
 
     virtual SocketBase& operator=(const SocketBase&) = delete;
 
@@ -89,11 +89,7 @@ public:
 
     virtual void HandleProxyPacket(const ProxyPacket& packet) = 0;
 
-#if defined(_WIN32)
     SOCKET fd = INVALID_SOCKET;
-#elif YUZU_UNIX
-    int fd = -1;
-#endif
 };
 
 class Socket : public SocketBase {