service: bsd: Add keepalive socket option

src/core/hle/service/sockets/bsd.cpp

@@ -689,6 +689,9 @@ Errno BSD::SetSockOptImpl(s32 fd, u32 level, OptName optname, size_t optlen, con
     case OptName::REUSEADDR:
         ASSERT(value == 0 || value == 1);
         return Translate(socket->SetReuseAddr(value != 0));
+    case OptName::KEEPALIVE:
+        ASSERT(value == 0 || value == 1);
+        return Translate(socket->SetKeepAlive(value != 0));
     case OptName::BROADCAST:
         ASSERT(value == 0 || value == 1);
         return Translate(socket->SetBroadcast(value != 0));

src/core/hle/service/sockets/sockets.h

@@ -46,6 +46,7 @@ enum class Protocol : u32 {
 
 enum class OptName : u32 {
     REUSEADDR = 0x4,
+    KEEPALIVE = 0x8,
     BROADCAST = 0x20,
     LINGER = 0x80,
     SNDBUF = 0x1001,

src/core/network/network.cpp

@@ -600,6 +600,10 @@ Errno Socket::SetReuseAddr(bool enable) {
     return SetSockOpt<u32>(fd, SO_REUSEADDR, enable ? 1 : 0);
 }
 
+Errno Socket::SetKeepAlive(bool enable) {
+    return SetSockOpt<u32>(fd, SO_KEEPALIVE, enable ? 1 : 0);
+}
+
 Errno Socket::SetBroadcast(bool enable) {
     return SetSockOpt<u32>(fd, SO_BROADCAST, enable ? 1 : 0);
 }

src/core/network/sockets.h

@@ -67,6 +67,8 @@ public:
 
     Errno SetReuseAddr(bool enable);
 
+    Errno SetKeepAlive(bool enable);
+
     Errno SetBroadcast(bool enable);
 
     Errno SetSndBuf(u32 value);