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src/core/network/network.h

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+// Copyright 2020 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <utility>
+
+#include "common/common_types.h"
+
+namespace Network {
+
+class Socket;
+
+/// Error code for network functions
+enum class Errno {
+    SUCCESS,
+    BADF,
+    INVAL,
+    MFILE,
+    NOTCONN,
+    AGAIN,
+};
+
+/// Address families
+enum class Domain {
+    INET, ///< Address family for IPv4
+};
+
+/// Socket types
+enum class Type {
+    STREAM,
+    DGRAM,
+    RAW,
+    SEQPACKET,
+};
+
+/// Protocol values for sockets
+enum class Protocol {
+    ICMP,
+    TCP,
+    UDP,
+};
+
+/// Shutdown mode
+enum class ShutdownHow {
+    RD,
+    WR,
+    RDWR,
+};
+
+/// Array of IPv4 address
+using IPv4Address = std::array<u8, 4>;
+
+/// Cross-platform sockaddr structure
+struct SockAddrIn {
+    Domain family;
+    IPv4Address ip;
+    u16 portno;
+};
+
+/// Cross-platform poll fd structure
+
+enum class PollEvents : u16 {
+    // Using Pascal case because IN is a macro on Windows.
+    In = 1 << 0,
+    Pri = 1 << 1,
+    Out = 1 << 2,
+    Err = 1 << 3,
+    Hup = 1 << 4,
+    Nval = 1 << 5,
+};
+
+DECLARE_ENUM_FLAG_OPERATORS(PollEvents);
+
+struct PollFD {
+    Socket* socket;
+    PollEvents events;
+    PollEvents revents;
+};
+
+class NetworkInstance {
+public:
+    explicit NetworkInstance();
+    ~NetworkInstance();
+};
+
+/// @brief Returns host's IPv4 address
+/// @return Pair of an array of human ordered IPv4 address (e.g. 192.168.0.1) and an error code
+std::pair<IPv4Address, Errno> GetHostIPv4Address();
+
+} // namespace Network